Replaced use of FileStream with IFileReference. Issue fo-dicom#69

DICOM [Unit Tests]/DICOM [Unit Tests].csproj

@@ -68,6 +68,7 @@
     </Compile>
     <Compile Include="DicomDatasetTest.cs" />
     <Compile Include="DicomDictionaryTest.cs" />
+    <Compile Include="Imaging\ColorTableTest.cs" />
     <Compile Include="IO\DesktopPathTest.cs" />
     <Compile Include="IO\TemporaryFileTest.cs" />
     <Compile Include="Media\DicomDirectoryTest.cs" />

DICOM [Unit Tests]/Imaging/ColorTableTest.cs

@@ -0,0 +1,22 @@
+// Copyright (c) 2012-2015 fo-dicom contributors.
+// Licensed under the Microsoft Public License (MS-PL).
+
+namespace Dicom.Imaging
+{
+    using System.IO;
+
+    using Xunit;
+
+    public class ColorTableTest
+    {
+        [Fact]
+        public void SaveLut_ValidTable_Succeeds()
+        {
+            var path = @".\Test Data\monochrome1.lut";
+            if (File.Exists(path)) File.Delete(path);
+
+            ColorTable.SaveLUT(path, ColorTable.Monochrome1);
+            Assert.True(File.Exists(path));
+        }
+    }
+}

DICOM/Imaging/ColorTable.cs

@@ -6,6 +6,8 @@
 
 namespace Dicom.Imaging
 {
+    using Dicom.IO;
+
     public static class ColorTable
     {
         public static readonly Color32[] Monochrome1 = InitGrayscaleLUT(true);
@@ -62,14 +64,19 @@ public static Color32[] LoadLUT(string file)
             }
         }
 
-        public static void SaveLUT(string file, Color32[] lut)
+        public static void SaveLUT(string path, Color32[] lut)
         {
             if (lut.Length != 256) return;
-            FileStream fs = new FileStream(file, FileMode.Create);
-            for (int i = 0; i < 256; i++) fs.WriteByte(lut[i].R);
-            for (int i = 0; i < 256; i++) fs.WriteByte(lut[i].G);
-            for (int i = 0; i < 256; i++) fs.WriteByte(lut[i].B);
-            fs.Close();
+
+            var file = IOManager.CreateFileReference(path);
+            file.Delete();
+
+            using (var fs = file.OpenWrite())
+            {
+                for (var i = 0; i < 256; i++) fs.WriteByte(lut[i].R);
+                for (var i = 0; i < 256; i++) fs.WriteByte(lut[i].G);
+                for (var i = 0; i < 256; i++) fs.WriteByte(lut[i].B);
+            }
         }
     }
 }