Do a database query on Textbox onblur event
- by user279521
I am using asp.net 3.5 with C#. I need to do a database lookup when a user enters ProductID in txtProductID. I guess doing javascript is out of the question since this will have to be server side call.
I wrote this code in the page_load event of the webpage:
protected void Page_Load(object sender, EventArgs e)
{
txtProductID.Attributes.Add("onblur", "LookupProduct()");
}
protected void LookupUser()
{
//Lookup Product information on onBlur event;
}
I get an error message: Microsoft JScript runtime error: Object expected
How can I resolve this ?
