Escape character -> string conversions - fixes #1135

Author: GrahamTheCoder

CHANGELOG.md

@@ -23,6 +23,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ### VB -> C#
 
+* Escape character -> string conversions [#1135](https://github.com/icsharpcode/CodeConverter/issues/1135)
 * Convert Not(x IsNot Nothing) to x is null [#1113](https://github.com/icsharpcode/CodeConverter/issues/1113)
 * Escape parameter names [#1092](https://github.com/icsharpcode/CodeConverter/issues/1092)
 

CodeConverter/CSharp/TypeConversionAnalyzer.cs

@@ -470,7 +470,7 @@ private static ExpressionSyntax GetToStringConversionOrNull(ExpressionSyntax csN
         }
 
         if (currentType is {SpecialType: SpecialType.System_Char} && csNode is CSSyntax.LiteralExpressionSyntax {Token: {} t} l) {
-            return SyntaxFactory.LiteralExpression(SyntaxKind.StringLiteralExpression, SyntaxFactory.Token(t.LeadingTrivia, SyntaxKind.StringLiteralToken, "\"" + t.Text.Trim('\'') + "\"", t.ValueText, t.TrailingTrivia))
+            return LiteralConversions.GetLiteralExpression(t.Value?.ToString(), convertedType: targetType)
                 .WithLeadingTrivia(csNode.GetLeadingTrivia()).WithTrailingTrivia(csNode.GetTrailingTrivia());
         }
 

Tests/CSharp/ExpressionTests/StringExpressionTests.cs

@@ -29,6 +29,25 @@ private void TestMethod()
 }");
     }
 
+    [Fact]
+    public async Task QuoteCharacterAsync()
+    {
+        await TestConversionVisualBasicToCSharpAsync(@"Public Class C
+    Public Sub s
+        Dim x As String = Chr(34)
+        x = Chr(92)
+    End Sub
+End Class", @"
+public partial class C
+{
+    public void s()
+    {
+        string x = ""\"""";
+        x = @""\"";
+    }
+}");
+    }
+
     [Fact]
     public async Task QuotesAsync()
     {