Question

I have a DropDownList which i am binding on page load. i dont have any buttons or anything. as soon as user selects the value in dropdown i need to show that value in label. i am not sure why this is not working. please help.

public string SelectedStore { get; set; }
protected void Page_Load(object sender, EventArgs e)
{
  if (!Page.IsPostBack)
      {
          BindStoresList();
      }
}
 protected void BindStoresList()
 {  storeDDList.AppendDataBoundItems = true;
    storeDDList.Items.Add(new ListItem("Select store", "-1"));
    TempCollection stores = TempDataSource.LoadForCriteria("ALL", "Code ASC");
    storeDDList.DataSource = stores;
    storeDDList.DataTextField = "DisplayName";
    storeDDList.DataValueField = "Code";
   storeDDList.DataBind();
 }
  protected void storeDDList_SelectedIndexChanged(object sender, EventArgs e)
   {
     SelectedStore = storeDDList.SelectedValue.ToString();
     selectedItem.Text = SelectedStore;
   }

I dont need any kind of jquery stuff as i am going to add gridview which binds depending on the value of dropdown..

****** EDITS *******

if i set AutoPostBack=True then on page refresh my DropDownList doesn’t bind at all as you can see in Page_Load Method, it will not call BindStoresList() method.

***** ANSWER *****

For people who might get stuck with this..

i was setting the EnableViewState to True for the DropDownList, so after page refreshes the SelectedValue was getting lost. after removing the EnableviewState and setting AutoPostBack to Ture working fine…

Answer 1

You have to set the AutoPostBack=True for the dropdown, it will automatically send the call to server side without need to extra button.