Implement with block using temporary variable

RefactoringEssentials/CSharp/Converter/MethodBodyVisitor.cs

@@ -16,6 +16,7 @@ namespace RefactoringEssentials.CSharp.Converter
 		{
 			SemanticModel semanticModel;
 			NodesVisitor nodesVisitor;
+			public const string WithBlockTempVariableName = "withBlock";
 
             public bool IsIterator { get; set; }
 
@@ -255,6 +256,18 @@ namespace RefactoringEssentials.CSharp.Converter
 				throw new NotSupportedException();
 			}
 
+			public override SyntaxList<StatementSyntax> VisitWithBlock(VBSyntax.WithBlockSyntax node)
+			{
+				var withExpression = (ExpressionSyntax) node.WithStatement.Expression.Accept(nodesVisitor);
+				var variableDeclaratorSyntax = SyntaxFactory.VariableDeclarator(SyntaxFactory.Identifier(WithBlockTempVariableName), null, SyntaxFactory.EqualsValueClause(withExpression));
+				var declaration = SyntaxFactory.LocalDeclarationStatement(SyntaxFactory.VariableDeclaration(
+					SyntaxFactory.IdentifierName("var"),
+					SyntaxFactory.SingletonSeparatedList(variableDeclaratorSyntax)));
+				var statements = node.Statements.SelectMany(s => s.Accept(this));
+				return SingleStatement(SyntaxFactory.Block(new[] {declaration}.Concat(statements).ToArray()));
+
+			}
+			
 			private bool ConvertToSwitch(ExpressionSyntax expr, SyntaxList<VBSyntax.CaseBlockSyntax> caseBlocks, out SwitchStatementSyntax switchStatement)
 			{
 				switchStatement = null;

RefactoringEssentials/CSharp/Converter/NodesVisitor.cs

@@ -821,8 +821,16 @@ namespace RefactoringEssentials.CSharp.Converter
 
 				var left = (ExpressionSyntax) node.Expression?.Accept(this);
 				if (left == null)
+				{
+					if (!node.Parent.Parent.IsKind(VBasic.SyntaxKind.WithBlock))
+					{
 						return SyntaxFactory.MemberBindingExpression(simpleNameSyntax);
-				else if (node.Expression.IsKind(VBasic.SyntaxKind.GlobalName))
+					}
+
+					left = SyntaxFactory.IdentifierName(MethodBodyVisitor.WithBlockTempVariableName);
+				}
+
+				if (node.Expression.IsKind(VBasic.SyntaxKind.GlobalName))
 				{
 					return SyntaxFactory.AliasQualifiedName((IdentifierNameSyntax) left, simpleNameSyntax);
 				}

Tests/CSharp/Converter/StatementTests.cs

@@ -215,6 +215,34 @@ class TestClass
 }");
         }
 
+        [Fact]
+        public void WithBlock()
+        {
+            TestConversionVisualBasicToCSharp(@"Class TestClass
+    Private Sub TestMethod()
+        With New StringBuilder
+            .Capacity = 20
+            .Length = 0
+        End With
+    End Sub
+End Class", @"using System;
+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.VisualBasic;
+
+class TestClass
+{
+    private void TestMethod()
+    {
+        {
+            var withBlock = new StringBuilder();
+            withBlock.Capacity = 20;
+            withBlock.Length = 0;
+        }
+    }
+}");
+        }
+
         [Fact]
         public void ArrayInitializationStatement()
         {