Question

For first time when the page loads we are unable to retrieve selected drop down value which consists of page numbers in dropdown list.Here is my dropdown list

<asp:DropDownList ID="ddlpagenubers" runat="server" AppendDataBoundItems="true"
 onselectedindexchanged="ddlpagenubers_SelectedIndexChanged" AutoPostBack="true">

i did a custom paging in a datalist by placing a dropdown consisting of page number to navigate to particular pages

Answer 1

I think you can do something like this

if (!IsPostBack)
{           
    var query = datasource();    // order by page id

    if(query != null)
    {
        ddlpagenubers.DataSource = query;
        ddlpagenubers.DataValueField = "ID";//page id
        ddlpagenubers.DataTextField = "Name";//page name
        ddlpagenubers.DataBind();                    
    }

    var value = ddlpagenubers.SelectedValue;

    if(!string.IsNullOrEmpty(value))
    {
        DispalyPage(value);
    }
}