Question

I wanted to display the remaining characters using a label beside my textbox just in case the user input exceeded the maximum length of characters.

This is my code for remaining characters:

private void txtID_TextChanged(object sender, EventArgs e)
    {
        int MaxChars = 10 - txtID.Text.Length;
        labelChars.Text = MaxChars.ToString() + " characters remaining.";
    }

What I wanted to do now is to prevent the user from entering characters in my textbox when he/she already exceeded the character limit. I’m planning to use the Substring property of the textbox but I don’t know how. Help me out? Thanks.

Answer 1

You should use the MaxLength property. http://msdn.microsoft.com/en-us/library/system.windows.forms.textboxbase.maxlength.aspx