The following code sample shows how to validate the user input string for minimum, maximum length
and check for presence of invalid characters. You can save lot of lines of code by using this class instead of writing several if...else... conditions.
// This code validates string for minimum 2 chars, maximum 3 chars and do not allow characters
'a', 'X', ']', ';' in a string.
try
{
System.Configuration.StringValidator sv = new System.Configuration.StringValidator(2, 3, "aX];.");
sv.Validate("bala.Xml");
}
catch (System.ArgumentException ex)
{
MessageBox.Show(ex.Message);
}
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