Dynamic expression parsing in localized environment - localization

Question

So I'm trying to parse a simple arithmetic dynamic expression using System.Linq.Dynamic.
This runs fine when executed in an English environment where the CurrentCulture is English-US (and the decimal separator is a plain "." dot).
Trying to run the code in a non English environment (e.g. Windows7x64 in Bulgarian, where the decimal separator is a "," comma), ParseLambda fails.
If I put "1.0" in my expression, ParseLambda fails in the Bulgarian environment with a PraseExpression, saying "Invalid real literal '1.0'" (but does not fail in the English environment).
If I try to put "1,0" in my expression, ParseLambda fails with a ParseExpression saying "Syntax error" (this one fails in both environments).
Anyone knows a way around this?
Or am I missing something?
Or can I somehow set the culture of the parsed expression?
I need my app to run well on both environments..
My code is running on .NET v4.0 and I have System.Linq.Dynamic.dll (1.0.0.0) added as reference to the project.
Here's the code:
using System;
using System.Linq;
using System.Linq.Dynamic;
namespace DynamicExpressionTest
{
class Program
{
static void Main(string[] args)
{
//FAIL: ParseException: Invalid real literal '1.0' (fails only in non-English environment)
var expression1 = DynamicExpression.ParseLambda(
new System.Linq.Expressions.ParameterExpression[] { },
typeof(double),
"1.0 + 1.0");
var result1 = expression1.Compile().DynamicInvoke();
double resultD1 = System.Convert.ToDouble(result1);
Console.WriteLine(resultD1);
//FAIL: ParseException: Syntax error (fails both in English and non-English environments)
var expression2 = DynamicExpression.ParseLambda(
new System.Linq.Expressions.ParameterExpression[] { },
typeof(double),
"1,0 + 1,0");
var result2 = expression2.Compile().DynamicInvoke();
double resultD2 = System.Convert.ToDouble(result2);
Console.WriteLine(resultD2);
}
}
}
Thanks!

Answer 1

You can set the current culture before running that code. E.g. add this line before your code that only works with an English-style decimal separator:
System.Threading.Thread.CurrentThread.CurrentCulture = new CultureInfo("en-US");