title: TextBox change date Format when insert into sql
body: <p>I want to change date Format when I insert my textbox into sql.
  I'm try something like this:</p>
  
  <pre><code>private void Save_Click(object sender, EventArgs e)
  {
      SqlCommand cmd = new SqlCommand(" insert into memberinfo date='"
          + textBox1.ToString("d/M/yyyy") + "'", con);
      cmd.ExecuteNonQuery();
  }
  </code></pre>
  
  <p>But i get error: No overload for method 'ToString' takes 1 arguments    </p>