VB.NET
Shared Function ExtractNumbers(ByVal expr As String) As String
Return String.Join(Nothing, System.Text.RegularExpressions.Regex.Split(expr, "[^\d]"))
End Function
C#
static string ExtractNumbers(string expr)
{
return string.Join(null,System.Text.RegularExpressions.Regex.Split(expr, "[^\\d]"));
}
Call the function as follows
VB.NET
Response.Write (ExtractNumbers("12EFR77"))
C#
Response.Write (ExtractNumbers("12EFR77"));
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