Question

i need to allow 300 words or less(not characters) in asp.net multiline textbox.
i know that RegularExpressionValidator can be used but what will be ValidationExpression for 300 words?

thank you

Answer 1

Use a CustomValidator, then in the ServerValidate event you could check the words (being defined by having a space between).

protected void ServerValidation(object source, ServerValidateEventArgs args)
{
    args.IsValid = myTextBox.Text.Split(" ").Length > 300;
}