c# - Checkboxlist loop is not working -

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i have dropdownlist control , button in asp.net page. dropdownlist populated method. if select item other first item, after clicking button, lose selected item in ddl , selects first item , getting value of first item in button click event. how can fix problem?

 <asp:dropdownlist id="userdropdown" runat="server" datatextfield="customername"  datavaluefield="customerid"> </asp:dropdownlist>  protected void button1_click(object sender, eventargs e) { if(!page.ispostback) {     userdropdown.datasource = cc.getcustomers();     userdropdown.databind(); } }

it sounds binding dropdownlist datasource @ ever request. instead bind if page.ispostback false below; (you may not need objectdatasource)

protected void page_load(object sender, eventargs e) {    if (!page.ispostback)    {      //bind datasource here (something below)      userdropdown.datasource = getcustomers();      userdropdown.databind();    } }

as databind() method called lose posted data of object , firstitem selected default.


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