Index: src/Plugins/Wti/Wti.IO/Exceptions/LineParseException.cs
===================================================================
diff -u
--- src/Plugins/Wti/Wti.IO/Exceptions/LineParseException.cs	(revision 0)
+++ src/Plugins/Wti/Wti.IO/Exceptions/LineParseException.cs	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -0,0 +1,33 @@
+using System;
+
+namespace Wti.IO.Exceptions
+{
+    /// <summary>
+    /// The exception that is thrown when a file reader class encounters an error while
+    /// parsing a row/line during the read.
+    /// </summary>
+    public class LineParseException : Exception
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="LineParseException"/> class.
+        /// </summary>
+        public LineParseException() { }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="LineParseException"/> class
+        /// with a specified error message.
+        /// </summary>
+        /// <param name="message">The error message that explains the reason for the exception.</param>
+        public LineParseException(string message) : base(message) { }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="LineParseException"/> class
+        /// with a specified error message and a reference to the inner exception that is
+        /// the cause of this exception.
+        /// </summary>
+        /// <param name="message">The error message that explains the reason for the exception.</param>
+        /// <param name="inner">The exception that is the cause of the current exception, 
+        /// or a null reference (Nothing in Visual Basic) if no inner exception is specified.</param>
+        public LineParseException(string message, Exception inner) : base(message, inner) { }
+    }
+}
\ No newline at end of file
Index: src/Plugins/Wti/Wti.IO/PipingSurfaceLinesCsvReader.cs
===================================================================
diff -u -ra24255dee45ce3bbeb2f140903969a2cd9f1fa67 -r91ec76d4b8a0fcf5962f442021c43f1ffa70743e
--- src/Plugins/Wti/Wti.IO/PipingSurfaceLinesCsvReader.cs	(.../PipingSurfaceLinesCsvReader.cs)	(revision a24255dee45ce3bbeb2f140903969a2cd9f1fa67)
+++ src/Plugins/Wti/Wti.IO/PipingSurfaceLinesCsvReader.cs	(.../PipingSurfaceLinesCsvReader.cs)	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -92,8 +92,12 @@
         /// <item>File incompatible for importing surface lines.</item>
         /// </list>
         /// </exception>
-        /// <exception cref="FormatException">A coordinate value does not represent a number in a valid format or the line is incorrectly formatted.</exception>
-        /// <exception cref="OverflowException">A coordinate value represents a number that is less than <see cref="double.MinValue"/> or greater than <see cref="double.MaxValue"/>.</exception>
+        /// <exception cref="LineParseException">A parse error has occurred for the current row, which may be caused by:
+        /// <list type="bullet">
+        /// <item>The row contains a coordinate value that cannot be parsed as a double.</item>
+        /// <item>The row contains a number that is too big or too small to be represented with a double.</item>
+        /// </list>
+        /// </exception>
         public PipingSurfaceLine ReadLine()
         {
             if (fileReader == null)
@@ -104,13 +108,13 @@
                 lineNumber = 2;
             }
 
-            var readText = ReadLineAndHandleIOExceptions(fileReader, lineNumber);
+            var readText = ReadLineAndHandleIOExceptions(fileReader);
             if (readText != null)
             {
                 var tokenizedString = readText.Split(separator);
-                var worldCoordinateValues = tokenizedString.Skip(1)
-                                                           .Select(ts => Double.Parse(ts, CultureInfo.InvariantCulture))
-                                                           .ToArray();
+                var worldCoordinateValues = ParseWorldCoordinateValuesAndHandleParseErrors(tokenizedString);
+
+                // TODO: Format Error: missing values to complete coordinate triplet
                 int coordinateCount = worldCoordinateValues.Length / 3;
                 var points = new Point3D[coordinateCount];
                 for (int i = 0; i < coordinateCount; i++)
@@ -127,6 +131,7 @@
 
                 var surfaceLine = new PipingSurfaceLine
                 {
+                    // TODO: Format Error: Row identifier null, empty or whitespace
                     Name = tokenizedString.First()
                 };
                 surfaceLine.SetGeometry(points);
@@ -136,6 +141,39 @@
             return null;
         }
 
+        /// <summary>
+        /// Parses the world coordinate values and handles parse errors.
+        /// </summary>
+        /// <param name="tokenizedString">The tokenized string.</param>
+        /// <returns></returns>
+        /// <exception cref="LineParseException">A parse error has occurred for the current row, which may be caused by:
+        /// <list type="bullet">
+        /// <item>The row contains a coordinate value that cannot be parsed as a double.</item>
+        /// <item>The row contains a number that is too big or too small to be represented with a double.</item>
+        /// </list>
+        /// </exception>
+        private double[] ParseWorldCoordinateValuesAndHandleParseErrors(string[] tokenizedString)
+        {
+            try
+            {
+                return tokenizedString.Skip(1)
+                                      .Select(ts => Double.Parse(ts, CultureInfo.InvariantCulture))
+                                      .ToArray();
+            }
+            catch (FormatException e)
+            {
+                var message = string.Format(Resources.Error_File_0_has_not_double_Line_1_,
+                                            filePath, lineNumber);
+                throw new LineParseException(message, e);
+            }
+            catch (OverflowException e)
+            {
+                var message = string.Format(Resources.Error_File_0_Parsing_causes_overflow_Line_1_,
+                                            filePath, lineNumber);
+                throw new LineParseException(message, e);
+            }
+        }
+
         public void Dispose()
         {
             if (fileReader != null)
@@ -182,7 +220,7 @@
         /// <exception cref="CriticalFileReadException">The header is not in the required format.</exception>
         private void ValidateHeader(TextReader reader)
         {
-            var header = ReadLineAndHandleIOExceptions(reader, 1);
+            var header = ReadLineAndHandleIOExceptions(reader);
             if (header != null)
             {
                 if (!IsHeaderValid(header))
@@ -209,7 +247,7 @@
         {
             var count = 0;
             string line;
-            while ((line = ReadLineAndHandleIOExceptions(reader, currentLine)) != null)
+            while ((line = ReadLineAndHandleIOExceptions(reader)) != null)
             {
                 if (!String.IsNullOrWhiteSpace(line))
                 {
@@ -227,15 +265,15 @@
         /// <param name="currentLine">Row number for error messaging.</param>
         /// <returns>The read line, or null when at the end of the file.</returns>
         /// <exception cref="CriticalFileReadException">An critical I/O exception occurred.</exception>
-        private string ReadLineAndHandleIOExceptions(TextReader reader, int currentLine)
+        private string ReadLineAndHandleIOExceptions(TextReader reader)
         {
             try
             {
                 return reader.ReadLine();
             }
             catch (OutOfMemoryException e)
             {
-                var message = string.Format(Resources.Error_File_0_contains_Line_1_too_big, filePath, currentLine);
+                var message = string.Format(Resources.Error_File_0_contains_Line_1_too_big, filePath, lineNumber);
                 throw new CriticalFileReadException(message, e);
             }
             catch (IOException e)
Index: src/Plugins/Wti/Wti.IO/Properties/Resources.Designer.cs
===================================================================
diff -u -r356ac6ef31864aa207c8af9470df3349f8e4d1f1 -r91ec76d4b8a0fcf5962f442021c43f1ffa70743e
--- src/Plugins/Wti/Wti.IO/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 356ac6ef31864aa207c8af9470df3349f8e4d1f1)
+++ src/Plugins/Wti/Wti.IO/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:4.0.30319.34209
+//     Runtime Version:4.0.30319.18444
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -97,6 +97,24 @@
         }
         
         /// <summary>
+        ///   Looks up a localized string similar to Het bestand &apos;{0}&apos; heeft op regel {1} een waarde dat geen getal is..
+        /// </summary>
+        public static string Error_File_0_has_not_double_Line_1_ {
+            get {
+                return ResourceManager.GetString("Error_File_0_has_not_double_Line_1_", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Het bestand &apos;{0}&apos; heeft op regel {1} een waarde dat te groot/klein is om ingelezen te worden..
+        /// </summary>
+        public static string Error_File_0_Parsing_causes_overflow_Line_1_ {
+            get {
+                return ResourceManager.GetString("Error_File_0_Parsing_causes_overflow_Line_1_", resourceCulture);
+            }
+        }
+        
+        /// <summary>
         ///   Looks up a localized string similar to Er is een onverwachte inleesfout opgetreden tijdens het lezen van het bestand &apos;{0}&apos;: {1}.
         /// </summary>
         public static string Error_General_IO_File_0_ErrorMessage_1_ {
Index: src/Plugins/Wti/Wti.IO/Properties/Resources.resx
===================================================================
diff -u -r356ac6ef31864aa207c8af9470df3349f8e4d1f1 -r91ec76d4b8a0fcf5962f442021c43f1ffa70743e
--- src/Plugins/Wti/Wti.IO/Properties/Resources.resx	(.../Resources.resx)	(revision 356ac6ef31864aa207c8af9470df3349f8e4d1f1)
+++ src/Plugins/Wti/Wti.IO/Properties/Resources.resx	(.../Resources.resx)	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -150,4 +150,10 @@
   <data name="Error_SoilProfileReadFromDatabase" xml:space="preserve">
     <value>Kon geen ondergrond profielen verkrijgen van de database '{0}'.</value>
   </data>
+  <data name="Error_File_0_has_not_double_Line_1_" xml:space="preserve">
+    <value>Het bestand '{0}' heeft op regel {1} een waarde dat geen getal is.</value>
+  </data>
+  <data name="Error_File_0_Parsing_causes_overflow_Line_1_" xml:space="preserve">
+    <value>Het bestand '{0}' heeft op regel {1} een waarde dat te groot/klein is om ingelezen te worden.</value>
+  </data>
 </root>
\ No newline at end of file
Index: src/Plugins/Wti/Wti.IO/Wti.IO.csproj
===================================================================
diff -u -r356ac6ef31864aa207c8af9470df3349f8e4d1f1 -r91ec76d4b8a0fcf5962f442021c43f1ffa70743e
--- src/Plugins/Wti/Wti.IO/Wti.IO.csproj	(.../Wti.IO.csproj)	(revision 356ac6ef31864aa207c8af9470df3349f8e4d1f1)
+++ src/Plugins/Wti/Wti.IO/Wti.IO.csproj	(.../Wti.IO.csproj)	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -51,6 +51,7 @@
       <Link>Properties\GlobalAssembly.cs</Link>
     </Compile>
     <Compile Include="Exceptions\CriticalFileReadException.cs" />
+    <Compile Include="Exceptions\LineParseException.cs" />
     <Compile Include="Exceptions\PipingSoilProfileReadException.cs" />
     <Compile Include="PipingSoilLayerReader.cs" />
     <Compile Include="PipingSoilProfileReader.cs" />
Index: src/Plugins/Wti/Wti.Plugin/FileImporter/PipingSurfaceLinesCsvImporter.cs
===================================================================
diff -u -ra24255dee45ce3bbeb2f140903969a2cd9f1fa67 -r91ec76d4b8a0fcf5962f442021c43f1ffa70743e
--- src/Plugins/Wti/Wti.Plugin/FileImporter/PipingSurfaceLinesCsvImporter.cs	(.../PipingSurfaceLinesCsvImporter.cs)	(revision a24255dee45ce3bbeb2f140903969a2cd9f1fa67)
+++ src/Plugins/Wti/Wti.Plugin/FileImporter/PipingSurfaceLinesCsvImporter.cs	(.../PipingSurfaceLinesCsvImporter.cs)	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -158,12 +158,18 @@
                 try
                 {
                     readSurfaceLines.Add(reader.ReadLine());
-                    NotifyProgress(stepName, i + 1, itemCount);
                 }
                 catch (CriticalFileReadException e)
                 {
                     return HandleCriticalError(path, e);
                 }
+                catch (LineParseException e)
+                {
+                    var message = string.Format(ApplicationResources.PipingSurfaceLinesCsvImporter_ReadPipingSurfaceLines_ParseError_File_0_SurfaceLinesNumber_1_Message_2_,
+                                                path, i+1, e.Message);
+                    log.Error(message);
+                }
+                NotifyProgress(stepName, i + 1, itemCount);
             }
 
             return new SurfaceLinesFileReadResult(false)
Index: src/Plugins/Wti/Wti.Plugin/Properties/Resources.Designer.cs
===================================================================
diff -u -r8fe3ae6f129251f98795abd491315924ca707a76 -r91ec76d4b8a0fcf5962f442021c43f1ffa70743e
--- src/Plugins/Wti/Wti.Plugin/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 8fe3ae6f129251f98795abd491315924ca707a76)
+++ src/Plugins/Wti/Wti.Plugin/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -106,6 +106,16 @@
         }
         
         /// <summary>
+        ///   Looks up a localized string similar to Er is een leesfout opgetreden bij dwarsdoorsnede {1} van bestand &apos;{0}&apos; en is overgeslagen: {2}.
+        /// </summary>
+        public static string PipingSurfaceLinesCsvImporter_ReadPipingSurfaceLines_ParseError_File_0_SurfaceLinesNumber_1_Message_2_ {
+            get {
+                return ResourceManager.GetString("PipingSurfaceLinesCsvImporter_ReadPipingSurfaceLines_ParseError_File_0_SurfaceLin" +
+                        "esNumber_1_Message_2_", resourceCulture);
+            }
+        }
+        
+        /// <summary>
         ///   Looks up a localized string similar to DSoilModel bestand.
         /// </summary>
         public static string SoilFileName {
Index: src/Plugins/Wti/Wti.Plugin/Properties/Resources.resx
===================================================================
diff -u -r8fe3ae6f129251f98795abd491315924ca707a76 -r91ec76d4b8a0fcf5962f442021c43f1ffa70743e
--- src/Plugins/Wti/Wti.Plugin/Properties/Resources.resx	(.../Resources.resx)	(revision 8fe3ae6f129251f98795abd491315924ca707a76)
+++ src/Plugins/Wti/Wti.Plugin/Properties/Resources.resx	(.../Resources.resx)	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -153,4 +153,7 @@
   <data name="PipingSurfaceLinesCsvImporter_CriticalErrorReading_0_Cause_1_" xml:space="preserve">
     <value>Er is een fout opgetreden tijdens het inlezen van '{0}' waardoor import niet uitgevoerd kan worden: {1}</value>
   </data>
+  <data name="PipingSurfaceLinesCsvImporter_ReadPipingSurfaceLines_ParseError_File_0_SurfaceLinesNumber_1_Message_2_" xml:space="preserve">
+    <value>Er is een leesfout opgetreden bij dwarsdoorsnede {1} van bestand '{0}' en is overgeslagen: {2}</value>
+  </data>
 </root>
\ No newline at end of file
Index: test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_XNotAValidNumber.csv
===================================================================
diff -u
--- test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_XNotAValidNumber.csv	(revision 0)
+++ test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_XNotAValidNumber.csv	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;This is not a number;2.2;3.3;4.4;5.5;6.6
\ No newline at end of file
Index: test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_XOverflowingNumber.csv
===================================================================
diff -u
--- test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_XOverflowingNumber.csv	(revision 0)
+++ test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_XOverflowingNumber.csv	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999;2.2;3.3;4.4;5.5;6.6
\ No newline at end of file
Index: test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_XUnderflowingNumber.csv
===================================================================
diff -u
--- test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_XUnderflowingNumber.csv	(revision 0)
+++ test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_XUnderflowingNumber.csv	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;1.1;2.2;3.3;-999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999;5.5;6.6
\ No newline at end of file
Index: test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_YNotAValidNumber.csv
===================================================================
diff -u
--- test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_YNotAValidNumber.csv	(revision 0)
+++ test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_YNotAValidNumber.csv	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;1.1;definitely not a number;3.3;4.4;5.5;6.6
\ No newline at end of file
Index: test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_YOverflowingNumber.csv
===================================================================
diff -u
--- test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_YOverflowingNumber.csv	(revision 0)
+++ test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_YOverflowingNumber.csv	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;1.1;2.2;3.3;4.4;999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999;6.6
\ No newline at end of file
Index: test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_YUnderflowingNumber.csv
===================================================================
diff -u
--- test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_YUnderflowingNumber.csv	(revision 0)
+++ test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_YUnderflowingNumber.csv	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;1.1;-999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999;3.3;4.4;5.5;6.6
\ No newline at end of file
Index: test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_ZNotAValidNumber.csv
===================================================================
diff -u
--- test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_ZNotAValidNumber.csv	(revision 0)
+++ test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_ZNotAValidNumber.csv	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;1.1;2.2;three point three;4.4;5.5;6.6
\ No newline at end of file
Index: test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_ZOverflowingNumber.csv
===================================================================
diff -u
--- test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_ZOverflowingNumber.csv	(revision 0)
+++ test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_ZOverflowingNumber.csv	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;1.1;2.2;3.3;4.4;5.5;999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
\ No newline at end of file
Index: test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_ZUnderflowingNumber.csv
===================================================================
diff -u
--- test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_ZUnderflowingNumber.csv	(revision 0)
+++ test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/InvalidRow_ZUnderflowingNumber.csv	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -0,0 +1,2 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+InvalidSurfaceLine;1.1;2.2;-999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999;4.4;5.5;6.6
\ No newline at end of file
Index: test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/TwoValidAndOneInvalidNumberRowSurfaceLines.csv
===================================================================
diff -u
--- test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/TwoValidAndOneInvalidNumberRowSurfaceLines.csv	(revision 0)
+++ test-data/Plugins/Wti/IO/PipingSurfaceLinesCsvReader/TwoValidAndOneInvalidNumberRowSurfaceLines.csv	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -0,0 +1,4 @@
+Profielnaam;X1;Y1;Z1;...;Xn;Yn;Zn
+Rotterdam1;94263.0026213;427776.654093;-1.02;94275.9126686;427811.080886;-1.04;94284.0663827;427831.918156;1.25;94294.9380015;427858.191234;1.45;94305.3566362;427889.900123;1.65;94315.0957947;427913.908281;1.66;94325.0614453;427941.766804;1.55;94331.1767309;427960.112661;1.44
+InvalidRow;1.1;Really not a number;3.3;4.4;5.5;6.6
+ArtificalLocal;2.3;0;1.0;5.7;0;2.0;4.4;0;1.1
\ No newline at end of file
Index: test/Plugins/Wti/Wti.IO.Test/Exceptions/LineParseExceptionTest.cs
===================================================================
diff -u
--- test/Plugins/Wti/Wti.IO.Test/Exceptions/LineParseExceptionTest.cs	(revision 0)
+++ test/Plugins/Wti/Wti.IO.Test/Exceptions/LineParseExceptionTest.cs	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -0,0 +1,72 @@
+using System;
+
+using NUnit.Framework;
+
+using Wti.IO.Exceptions;
+
+namespace Wti.IO.Test.Exceptions
+{
+    [TestFixture]
+    public class LineParseExceptionTest
+    {
+        [Test]
+        [SetCulture("en-US")]
+        public void DefaultConstructor_ExpectedValues()
+        {
+            // Call
+            var exception = new LineParseException();
+
+            // Assert
+            Assert.IsInstanceOf<Exception>(exception);
+            var expectedMessage = string.Format("Exception of type '{0}' was thrown.", exception.GetType());
+            Assert.AreEqual(expectedMessage, exception.Message);
+            CollectionAssert.IsEmpty(exception.Data);
+            Assert.IsNull(exception.HelpLink);
+            Assert.IsNull(exception.InnerException);
+            Assert.IsNull(exception.Source);
+            Assert.IsNull(exception.StackTrace);
+            Assert.IsNull(exception.TargetSite);
+        }
+
+        [Test]
+        public void MessageConstructor_ExpectedValues()
+        {
+            // Setup
+            const string messageText = "<insert exception message>";
+
+            // Call
+            var exception = new LineParseException(messageText);
+
+            // Assert
+            Assert.IsInstanceOf<Exception>(exception);
+            Assert.AreEqual(messageText, exception.Message);
+            CollectionAssert.IsEmpty(exception.Data);
+            Assert.IsNull(exception.HelpLink);
+            Assert.IsNull(exception.InnerException);
+            Assert.IsNull(exception.Source);
+            Assert.IsNull(exception.StackTrace);
+            Assert.IsNull(exception.TargetSite);
+        }
+
+        [Test]
+        public void MessageAndInnerExceptionConstructor_ExpectedValues()
+        {
+            // Setup
+            var innerException = new Exception();
+            const string messageText = "<insert exception message>";
+
+            // Call
+            var exception = new LineParseException(messageText, innerException);
+
+            // Assert
+            Assert.IsInstanceOf<Exception>(exception);
+            Assert.AreEqual(messageText, exception.Message);
+            CollectionAssert.IsEmpty(exception.Data);
+            Assert.IsNull(exception.HelpLink);
+            Assert.AreEqual(innerException, exception.InnerException);
+            Assert.IsNull(exception.Source);
+            Assert.IsNull(exception.StackTrace);
+            Assert.IsNull(exception.TargetSite);
+        } 
+    }
+}
\ No newline at end of file
Index: test/Plugins/Wti/Wti.IO.Test/PipingSurfaceLinesCsvReaderTest.cs
===================================================================
diff -u -ra24255dee45ce3bbeb2f140903969a2cd9f1fa67 -r91ec76d4b8a0fcf5962f442021c43f1ffa70743e
--- test/Plugins/Wti/Wti.IO.Test/PipingSurfaceLinesCsvReaderTest.cs	(.../PipingSurfaceLinesCsvReaderTest.cs)	(revision a24255dee45ce3bbeb2f140903969a2cd9f1fa67)
+++ test/Plugins/Wti/Wti.IO.Test/PipingSurfaceLinesCsvReaderTest.cs	(.../PipingSurfaceLinesCsvReaderTest.cs)	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -369,6 +369,59 @@
             }
         }
 
+        [Test]
+        [TestCase("X")]
+        [TestCase("Y")]
+        [TestCase("Z")]
+        public void ReadLine_FileHasInvalidCoordinate_ThrowLineParseException(string malformattedVariableName)
+        {
+            // Setup
+            string path = Path.Combine(testDataPath, string.Format("InvalidRow_{0}NotAValidNumber.csv", malformattedVariableName));
+
+            // Precondition
+            Assert.IsTrue(File.Exists(path));
+
+            using (var reader = new PipingSurfaceLinesCsvReader(path))
+            {
+                // Call
+                TestDelegate call = () => reader.ReadLine();
+
+                // Assert
+                var exception = Assert.Throws<LineParseException>(call);
+                var expectedMessage = string.Format(IOResources.Error_File_0_has_not_double_Line_1_, path, 2);
+                Assert.AreEqual(expectedMessage, exception.Message);
+                Assert.IsInstanceOf<FormatException>(exception.InnerException);
+            }
+        }
+
+        [Test]
+        [TestCase("XOver")]
+        [TestCase("YOver")]
+        [TestCase("ZOver")]
+        [TestCase("XUnder")]
+        [TestCase("YUnder")]
+        [TestCase("ZUnder")]
+        public void ReadLine_FileHasCoordinateCausingOverOrUnderflow_ThrowLineParseException(string malformattedVariableName)
+        {
+            // Setup
+            string path = Path.Combine(testDataPath, string.Format("InvalidRow_{0}flowingNumber.csv", malformattedVariableName));
+
+            // Precondition
+            Assert.IsTrue(File.Exists(path));
+
+            using (var reader = new PipingSurfaceLinesCsvReader(path))
+            {
+                // Call
+                TestDelegate call = () => reader.ReadLine();
+
+                // Assert
+                var exception = Assert.Throws<LineParseException>(call);
+                var expectedMessage = string.Format(IOResources.Error_File_0_Parsing_causes_overflow_Line_1_, path, 2);
+                Assert.AreEqual(expectedMessage, exception.Message);
+                Assert.IsInstanceOf<OverflowException>(exception.InnerException);
+            }
+        }
+
         private void DoReadLine_OpenedValidFileWithHeaderAndTwoSurfaceLines_ReturnCreatedSurfaceLine()
         {
             // Setup
Index: test/Plugins/Wti/Wti.IO.Test/Wti.IO.Test.csproj
===================================================================
diff -u -r148b1b06bb80e4ad65a7b8a722910db6eaef0098 -r91ec76d4b8a0fcf5962f442021c43f1ffa70743e
--- test/Plugins/Wti/Wti.IO.Test/Wti.IO.Test.csproj	(.../Wti.IO.Test.csproj)	(revision 148b1b06bb80e4ad65a7b8a722910db6eaef0098)
+++ test/Plugins/Wti/Wti.IO.Test/Wti.IO.Test.csproj	(.../Wti.IO.Test.csproj)	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -46,6 +46,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Exceptions\CriticalFileReadExceptionTest.cs" />
+    <Compile Include="Exceptions\LineParseExceptionTest.cs" />
     <Compile Include="Exceptions\PipingSoilProfileReadExceptionTest.cs" />
     <Compile Include="PipingSoilLayerReaderTest.cs" />
     <Compile Include="PipingSoilProfileReaderTest.cs" />
Index: test/Plugins/Wti/Wti.Plugin.Test/FileImporter/PipingSurfaceLineCsvImporterTest.cs
===================================================================
diff -u -ra24255dee45ce3bbeb2f140903969a2cd9f1fa67 -r91ec76d4b8a0fcf5962f442021c43f1ffa70743e
--- test/Plugins/Wti/Wti.Plugin.Test/FileImporter/PipingSurfaceLineCsvImporterTest.cs	(.../PipingSurfaceLineCsvImporterTest.cs)	(revision a24255dee45ce3bbeb2f140903969a2cd9f1fa67)
+++ test/Plugins/Wti/Wti.Plugin.Test/FileImporter/PipingSurfaceLineCsvImporterTest.cs	(.../PipingSurfaceLineCsvImporterTest.cs)	(revision 91ec76d4b8a0fcf5962f442021c43f1ffa70743e)
@@ -361,5 +361,49 @@
                 }
             }
         }
+
+        [Test]
+        public void ImportItem_FileWithTwoValidLinesAndOneInvalidDueToUnparsableNumber_SkipInvalidRowAndLog()
+        {
+            // Setup
+            string corruptPath = Path.Combine(testDataPath, "TwoValidAndOneInvalidNumberRowSurfaceLines.csv");
+
+            var mocks = new MockRepository();
+            var observer = mocks.StrictMock<IObserver>();
+            observer.Expect(o => o.UpdateObserver());
+            mocks.ReplayAll();
+
+            var importer = new PipingSurfaceLinesCsvImporter();
+            int progressCallCount = 0;
+            importer.ProgressChanged += (name, step, steps) =>
+            {
+                progressCallCount++;
+            };
+
+            var observableSurfaceLinesList = new ObservableList<PipingSurfaceLine>();
+            observableSurfaceLinesList.Attach(observer);
+
+            object importedItem = null;
+
+            // Call
+            Action call = () => importedItem = importer.ImportItem(corruptPath, observableSurfaceLinesList);
+
+            // Assert
+            var internalErrorMessage = String.Format(WtiIOResources.Error_File_0_has_not_double_Line_1_,
+                                                     corruptPath, 3);
+            var expectedLogMessage = string.Format(ApplicationResources.PipingSurfaceLinesCsvImporter_ReadPipingSurfaceLines_ParseError_File_0_SurfaceLinesNumber_1_Message_2_,
+                                                   corruptPath, 2, internalErrorMessage);
+            TestHelper.AssertLogMessageIsGenerated(call, expectedLogMessage, 1);
+            Assert.AreSame(observableSurfaceLinesList, importedItem);
+
+            Assert.AreEqual(2, observableSurfaceLinesList.Count,
+                "Ensure only the two valid surfacelines have been imported.");
+            Assert.AreEqual(1, observableSurfaceLinesList.Count(sl => sl.Name == "Rotterdam1"));
+            Assert.AreEqual(1, observableSurfaceLinesList.Count(sl => sl.Name == "ArtificalLocal"));
+
+            Assert.AreEqual(5, progressCallCount,
+                "Expect 1 call for each surfaceline (3 in total) +1 for 0/N progress, and 1 for putting data in model.");
+            mocks.VerifyAll();
+        }
     }
 }
\ No newline at end of file