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.
WedgeSoft
Just insert a space in the pattern (see below, after number 9):
[^A-Z0-9 ]
Andrej
Jamie Wood
How add spaces in this pattern I forget that are necesaries too :P
"[^A-Z0-9' ']"
Regards.
buntyissc
Regards.
vb_n00b
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
DavidThi808
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.