call dropdownlist selectedindexchanged event in gridview rowdatabound event?

Question

protected void gvMeatDispatch_RowDataBound(object sender, GridViewRowEventArgs e)
{
    try
    {
        DataTable dtpartyname = new DataTable();
        objRetailPL.status = 4;
        dtpartyname = objRetailBAL.GetType(objRetailPL);

        DropDownList ddlpn = (DropDownList)e.Row.FindControl("ddlpartyname");
        if (ddlpn != null)
        {
           // ddlpn.SelectedIndexChanged += new EventHandler(ddlbranchdate_SelectedIndexChanged);                

            ddlpn.Items.Add(new ListItem("--Select--", "0"));
            ddlpn.SelectedIndex = ddlpn.Items.Count - 1;
        }
    }
}

here ddlpn.SelectedIndexChanged event is not fired,...please help me How to call dropdownlist selectedindexchanged event in Gridview RowDataBound event

Answer 1

You need to handle SelectedIndexChanged for DropDownList nested inside GridView you have to just set AutoPostback property to true and point SelectedIndexChange event to some procedure.

The cause of issue I had was that I didn't check in Page_Load function (during binding data to GridView) following rule: "If !IsPostBack " . And that's all.

Answer 2

确保在代码中声明了以下事件

void ddlpn_SelectedIndexChanged(object sender, EventArgs e)