public static bool FilterName(ref string name, out string message, int minLen = 3, int maxLen = 20)
{
const string AllowedCharacters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890+-=/!#$%^&()? .,\'\"";
if (name == null)
{
message = $"The name cannot be empty";
return(false);
}
for (int i = 0; i < name.Length; i++)
{
if (!AllowedCharacters.Contains(name[i]))
{
message = $"The name contains the illegal character '{name[i]}'";
return(false);
}
}
name = name.Trim();
for (int i = 1; i < name.Length; i++)
{
if (name[i] == name[i - 1] && name[i] == ' ')
{
name.Remove(i, 1);
i--;
}
}
if (name.Length < minLen)
{
message = $"The name needs to be at least {minLen} characters long, yours is {name.Length}.";
return(false);
}
if (name.Length > maxLen)
{
message = $"The name needs to be maximum {maxLen} characters long, yours is {name.Length}.";
return(false);
}
message = "Valid name";
return(true);
}
/// <summary>
/// Overridden OnKeyPress method
/// </summary>
/// <param name="e"></param>
protected override void OnKeyPress(KeyPressEventArgs e)
{
if (AllowPaste && RaiseCustomPasteEvent && _pasteDetected && OnPaste != null)
{
PasteEventArgs args = new PasteEventArgs();
args.Text = Clipboard.GetText();
OnPaste(this, args);
SelectedText = args.Text;
e.Handled = true;
}
else if ((AllowCut && _cutDetected) || (AllowCopy && _copyDetected))
{
e.Handled = false;
}
else if (AcceptsReturn && e.KeyChar == '\r')
{
e.Handled = false;
}
else
{
if (!String.IsNullOrEmpty(AllowedCharacters))
{
e.Handled = !AllowedCharacters.Contains(e.KeyChar.ToString());
if (e.Handled && e.KeyChar == '\b' && AllowBackSpace)
{
e.Handled = !e.Handled;
}
}
else
{
base.OnKeyPress(e);
}
}
if (_pasteDetected)
{
_pasteDetected = false;
}
}
/// <inheritdoc />
public Task <IdentityResult> ValidateAsync(UserManager <TUser> manager, TUser user, string password)
{
var result = IdentityResult.Success;
// if AllowedCharacters is not defined in appsettings.json then the validator always returns success
if (string.IsNullOrEmpty(AllowedCharacters))
{
return(Task.FromResult(result));
}
var isValid = password.All(x => AllowedCharacters.Contains(x));
if (!isValid || string.IsNullOrWhiteSpace(password))
{
result = IdentityResult.Failed(new IdentityError {
Code = ErrorDescriber,
Description = MessageDescriber.PasswordContainsNotAllowedChars
});
}
return(Task.FromResult(result));
}