public static string IsNumeric(string strValidate)
{
string strValidChars = "0123456789";
string strChar;
string bolResult = "TRUE";
for (int i = 0; i < strValidate.Length; i++)
{
strChar = strValidate[i].ToString();
if (strValidChars.IndexOf(strChar) == -1)
bolResult = "false";
return bolResult;
}
return bolResult;
}
