[hamada558]

جرب وخبرني

كود :

DataClasses1DataContext dt = new DataClasses1DataContext();

var result =
    (from r in dt.dts
        where r.tanks.Equals(textBox1.Text)
        select r).SingleOrDefault();

if (result != null) {
    textBox1.Text = result.tanks;
    textBox2.Text = result.crnt_qntty.ToString();
}