Re: IsNumeric

Hi sck10,

Thank you for your quick reply.

Here's the steps to get the source code of IsNumeric:

1) Create a simple VB.NET console application, type in following code:

Sub Main()
Dim s As String = "1.234"
If IsNumeric(s) Then
Console.WriteLine("s is numeric")
End If
s = "2006/9/1"
If IsDate(s) Then
Console.WriteLine("s is date")
End If
End Sub

2) Build it; in Reflector, open the generated exe; find the Main function,
double click it to see its disassembled code (make sure you selected "C#"
in the toolbar combobox):

[STAThread]
public static void Main()
{
string text1 = "1.234";
if (Versioned.IsNumeric(text1))
{
Console.WriteLine("s is numeric");
}
text1 = "2006/9/1";
if (Information.IsDate(text1))
{
Console.WriteLine("s is date");
}
}

3) Click on the "IsNumeric" function to navigate to its source. You will
learn that it's located in Microsoft.VisualBasic.CompilerServices.Versioned
as a static method, so you can reference Microsoft.VisualBasic.dll in your
C# project and use this method directly; or you can write your version of
IsNumeric use the disassembled code as reference.

Hope this helps. Please feel free to post here if anything is unclear.

Regards,
Walter Wang (wawang@xxxxxxxxxxxxxxxxxxxx, remove 'online.')
Microsoft Online Community Support

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