To check for numeric strings

in VB, I think isNumeric should do the trick.

for C#, one way is to:

try

{

val = Convert.ToInt32(textBox2.Text.ToString().Trim());

}

catch (Exception e)

{

//not a valid number

}

another method, slightly more troublesome, but still does the trick.

double res;

string a;

a = "#$%^&";

if (double.TryParse(a, out res)) { } else { MessageBox.Show("a is not a number"); }

a = "12345678";

if (double.TryParse(a, out res)) { MessageBox.Show("a is a number!!!"); }

a = "1234a5678";

if (double.TryParse(a, out res)) { } else { MessageBox.Show("a is not a number....."); }