Index: src/Plugins/Wti/Wti.IO/PipingSurfaceLinesCsvReader.cs
===================================================================
diff -u -rbb61ed227cf79e994b84019096e4297b2fbd4527 -rc42d0c47753135357002db6026ebbefc3603a62b
--- src/Plugins/Wti/Wti.IO/PipingSurfaceLinesCsvReader.cs	(.../PipingSurfaceLinesCsvReader.cs)	(revision bb61ed227cf79e994b84019096e4297b2fbd4527)
+++ src/Plugins/Wti/Wti.IO/PipingSurfaceLinesCsvReader.cs	(.../PipingSurfaceLinesCsvReader.cs)	(revision c42d0c47753135357002db6026ebbefc3603a62b)
@@ -1,5 +1,11 @@
 using System;
+using System.Globalization;
+using System.IO;
+using System.Linq;
 
+using Wti.Data;
+using Wti.IO.Properties;
+
 namespace Wti.IO
 {
     /// <summary>
@@ -10,8 +16,108 @@
     /// Where {ID} has to be a particular accepted text, and n triplets of doubles form the
     /// 3D coordinates defining the geometric shape of the surfaceline..
     /// </summary>
-    public class PipingSurfaceLinesCsvReader
+    public class PipingSurfaceLinesCsvReader : IDisposable
     {
         private readonly string[] acceptableIdNames = { "Profielnaam, LocationID" };
+        private readonly string filePath;
+        private StreamReader fileReader;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="PipingSurfaceLinesCsvReader"/> class
+        /// and opens a given file path.
+        /// </summary>
+        /// <param name="path">The path to the file to be read.</param>
+        public PipingSurfaceLinesCsvReader(string path)
+        {
+            if (string.IsNullOrWhiteSpace(path))
+            {
+                throw new ArgumentException(Resources.Error_PathMustBeSpecified);
+            }
+            filePath = path;
+        }
+
+        public void Dispose()
+        {
+            if (fileReader != null)
+            {
+                fileReader.Dispose();
+                fileReader = null;
+            }
+        }
+
+        /// <summary>
+        /// Reads the file to determine the number of available <see cref="PipingSurfaceLine"/>
+        /// data rows.
+        /// </summary>
+        /// <returns>A value greater than or equal to 0.</returns>
+        /// <exception cref="FileNotFoundException">The file cannot be found.</exception>
+        /// <exception cref="DirectoryNotFoundException">The specified path is invalid, such as being on an unmapped drive.</exception>
+        /// <exception cref="IOException">Filepath includes an incorrect or invalid syntax for file name, directory name, or volume label.</exception>
+        /// <exception cref="OutOfMemoryException">There is insufficient memory to allocate a buffer for the returned string.</exception>
+        public int GetSurfaceLinesCount()
+        {
+            var count = 0;
+            using (var reader = new StreamReader(filePath))
+            {
+                // Skip header:
+                reader.ReadLine();
+
+                // Count SurfaceLines:
+                string line;
+                while ((line = reader.ReadLine()) != null)
+                {
+                    if (!String.IsNullOrWhiteSpace(line))
+                    {
+                        count++;
+                    }
+                }
+            }
+            return count;
+        }
+
+        /// <summary>
+        /// Reads and consumes the next data row, parsing the data to create an instance 
+        /// of <see cref="PipingSurfaceLine"/>.
+        /// </summary>
+        /// <returns>Return the parse surfaceline, or null when at the end of the file.</returns>
+        /// <exception cref="FileNotFoundException">The file cannot be found.</exception>
+        /// <exception cref="DirectoryNotFoundException">The specified path is invalid, such as being on an unmapped drive.</exception>
+        /// <exception cref="IOException">Filepath includes an incorrect or invalid syntax for file name, directory name, or volume label.</exception>
+        /// <exception cref="OutOfMemoryException">There is insufficient memory to allocate a buffer for the returned string.</exception>
+        public PipingSurfaceLine ReadLine()
+        {
+            if (fileReader == null)
+            {
+                fileReader = new StreamReader(filePath);
+                // Skip Header:
+                fileReader.ReadLine();
+            }
+            var readText = fileReader.ReadLine();
+            if (readText != null)
+            {
+                var tokenizedString = readText.Split(';');
+                var worldCoordinateValues = tokenizedString.Skip(1)
+                                                           .Select(ts => Double.Parse(ts, CultureInfo.InvariantCulture))
+                                                           .ToArray();
+                int coordinateCount = worldCoordinateValues.Length/3;
+                var points = new Point3D[coordinateCount];
+                for (int i = 0; i < coordinateCount; i++)
+                {
+                    points[i] = new Point3D
+                    {
+                        X = worldCoordinateValues[i*3],
+                        Y = worldCoordinateValues[i*3+1],
+                        Z = worldCoordinateValues[i*3+2]
+                    };
+                }
+
+                var surfaceLine = new PipingSurfaceLine();
+                surfaceLine.Name = tokenizedString.First();
+                surfaceLine.SetGeometry(points);
+                return surfaceLine;
+            }
+
+            return null;
+        }
     }
 }
\ No newline at end of file