Default for InterpolatedVerbatimStringStartToken is now ""

Therefore we need to explicitly say which start token we want (presumably this was done to allow $@ or @$ to be used)

Author: GrahamTheCoder

ICSharpCode.CodeConverter/CSharp/NodesVisitor.cs

@@ -1029,15 +1029,19 @@ public override CSharpSyntaxNode VisitInterpolation(VBSyntax.InterpolationSyntax
             public override CSharpSyntaxNode VisitInterpolatedStringExpression(VBSyntax.InterpolatedStringExpressionSyntax node)
             {
                 var useVerbatim = node.DescendantNodes().OfType<VBSyntax.InterpolatedStringTextSyntax>().Any(c => CommonConversions.IsWorthBeingAVerbatimString(c.TextToken.Text));
-                var startTokenKind = useVerbatim ? SyntaxKind.InterpolatedVerbatimStringStartToken : SyntaxKind.InterpolatedStringStartToken;
-                return SyntaxFactory.InterpolatedStringExpression(SyntaxFactory.Token(startTokenKind), SyntaxFactory.List(node.Contents.Select(c => (InterpolatedStringContentSyntax)c.Accept(TriviaConvertingVisitor))), SyntaxFactory.Token(SyntaxKind.InterpolatedStringEndToken));
+                var startToken = useVerbatim ? 
+                    SyntaxFactory.Token(default(SyntaxTriviaList), SyntaxKind.InterpolatedVerbatimStringStartToken, "$@\"", "$@\"", default(SyntaxTriviaList))
+                    : SyntaxFactory.Token(default(SyntaxTriviaList), SyntaxKind.InterpolatedStringStartToken, "$\"", "$\"", default(SyntaxTriviaList));
+                InterpolatedStringExpressionSyntax interpolatedStringExpressionSyntax = SyntaxFactory.InterpolatedStringExpression(startToken, SyntaxFactory.List(node.Contents.Select(c => (InterpolatedStringContentSyntax)c.Accept(TriviaConvertingVisitor))), SyntaxFactory.Token(SyntaxKind.InterpolatedStringEndToken));
+                return interpolatedStringExpressionSyntax;
             }
 
             public override CSharpSyntaxNode VisitInterpolatedStringText(VBSyntax.InterpolatedStringTextSyntax node)
             {
                 var useVerbatim = node.Parent.DescendantNodes().OfType<VBSyntax.InterpolatedStringTextSyntax>().Any(c => CommonConversions.IsWorthBeingAVerbatimString(c.TextToken.Text));
                 var textForUser = CommonConversions.EscapeQuotes(node.TextToken.Text, node.TextToken.ValueText, useVerbatim);
-                return SyntaxFactory.InterpolatedStringText(SyntaxFactory.Token(default(SyntaxTriviaList), SyntaxKind.InterpolatedStringTextToken, textForUser, node.TextToken.ValueText, default(SyntaxTriviaList)));
+                InterpolatedStringTextSyntax interpolatedStringTextSyntax = SyntaxFactory.InterpolatedStringText(SyntaxFactory.Token(default(SyntaxTriviaList), SyntaxKind.InterpolatedStringTextToken, textForUser, node.TextToken.ValueText, default(SyntaxTriviaList)));
+                return interpolatedStringTextSyntax;
             }
 
             public override CSharpSyntaxNode VisitInterpolationAlignmentClause(VBSyntax.InterpolationAlignmentClauseSyntax node)