使用C＃刷新Gridview

Question

I have a dropdown menu that affects my select statement for a gridview. The grid is updating correctly based on selection if I refresh the page.

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
    SqlDataSource4.SelectParameters["userIdSelected"].DefaultValue = userNameDropDown.SelectedItem.Value;
    //update grid here
    }

How do I see the updated grid when my drop down list changes?

Answer 1

You can set your DropDownList's AutoPostback attribute to true. I suggest you use also an UpdatePanel.

You can read here to learn more about UpdatePanel.