Question

I’d like to update SQL when a textbox is changed by the user, but what I’m worried about is updating it every character press essentially will be sending a SQL UPDATE command every single time, potentially even simultaneously if the user is typing fast.

what’s sort of a best practice approach for making it so that i only post the updated textbox after, say maybe, 2 seconds of the user no longer updating the textbox?

probably some variation of binding to the keyup event of the textbox and using a settimeout and cleartimeout to do it?

Answer 1

you can use TextBox leave events. after you done with things. Textbox Leave

private void textBox1_Leave(object sender, System.EventArgs e)
{
  string StrSql = Textbox1.Text; // your sql queries goes here
  using(SqlConnection con = new SqlConnection(Constr))
  {
    SqlCommand cmd = new SqlCommand(strSql, con); 
    cmd.ExecuteNonQuery();  
  }

}