SimulateIsNumeric.cs

//
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// Copyright (c) 2013
// by DNN Corp.
//
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// documentation files (the "Software"), to deal in the Software without restriction, including without limitation 
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// of the Software.
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//
// original copyright
//----------------------------------------------------------------------------------------
//	Copyright © 2003 - 2011 Tangible Software Solutions Inc.
//	This class can be used by anyone provided that the copyright notice remains intact.
//
//	This class simulates the behavior of the classic VB 'IsNumeric' function.
//----------------------------------------------------------------------------------------
public static class SimulateIsNumeric
{
	public static bool IsNumeric(object expression)
	{
		if (expression == null)
			return false;

		double testDouble;
		if (double.TryParse(expression.ToString(), out testDouble))
			return true;

		//VB's 'IsNumeric' returns true for any boolean value:
		bool testBool;
		if (bool.TryParse(expression.ToString(), out testBool))
			return true;

		return false;
	}
}