I face a weird problem. I have a simple aspx page with a dropdownlist. The dropdown gets filled through a function which is called from Page_Load() event. The dropdown item selection triggers event OnSelectedIndexChanged. Now the event triggers rightly but what happens that upon post back the dropdownlist gets initialized, that is, it shows empty. Never faced this type of issue before so i wonder what s happening wrong.

守则如下:

protected void Page_Load(object sender, EventArgs e)
{
     if(!Page.IsPostBack)
        PopulateCompanyList(GetCompanies(serverUNCPath));
    return;
}