Hi!
I want check a string looking for characteres that aren't letters from A to Z or numbers from 0 to 9. I can do it with multiple string.Contains(character) but isn't a good way.
Some way mor efficient and fast
Regards.
Checking for ilegal symbols in a string.
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Checking for ilegal symbols in a string.
Arnaud H
How add spaces in this pattern I forget that are necesaries too :P
"[^A-Z0-9' ']"
Regards.
Anu Viswan
Hi,
you can use regular expressions for this kind of checking. The following code sets resultado to true, if string Texto doesn't include any characters that don't fall in the A-Z 0-9 range (that includes spaces):
string pattern = "[^A-Z0-9]";bool resultado = !Regex.IsMatch(Texto, pattern, RegexOptions.IgnoreCase);
Hope it helps,
Andrej
ravindra_pn
Regards.
Eva Gonzalez
Just insert a space in the pattern (see below, after number 9):
[^A-Z0-9 ]
Andrej
Expressman
Resultado=true;
Texto.ToUpper();
foreach (char CH in Texto)
{
if ((CH > 90) || (CH < 65)) Resultado = false;
if ((CH > 57) || (CH < 48)) Resultado = false;
}
if(Resultado) MessageBox.Show("Valid string");
Regards.