static PrimitiveExpression CreateFormatString(RefactoringContext context, PrimitiveExpression pExpr, int argumentNumber)
{
var start = context.GetOffset(pExpr.StartLocation);
var end = context.GetOffset(pExpr.EndLocation);
var sStart = context.GetOffset(context.SelectionStart);
var sEnd = context.GetOffset(context.SelectionEnd);
return(new PrimitiveExpression("", context.GetText(start, sStart - start) + "{" + argumentNumber + "}" + context.GetText(sEnd, end - sEnd)));
}
