DropDown Not Working Correctly

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i have binded my drop down here is my code

C#

public void FillDll()
    {
        if (!Page.IsPostBack)
        {
            DataTable droomtype = (DataTable)ViewState["GridView"];
            if (droomtype.Rows[0]["Single"].ToString() != "")
                DdlRoomType.Items.Add(new ListItem("Single", droomtype.Rows[0]["Single"].ToString()));
            if (droomtype.Rows[0]["Double"].ToString() != "")
                DdlRoomType.Items.Add(new ListItem("Double", droomtype.Rows[0]["Double"].ToString()));
            if (droomtype.Rows[0]["Triple"].ToString() != "")
                DdlRoomType.Items.Add(new ListItem("Triple", droomtype.Rows[0]["Triple"].ToString()));
            if (droomtype.Rows[0]["Quad"].ToString() != "")
                DdlRoomType.Items.Add(new ListItem("Quad", droomtype.Rows[0]["Quad"].ToString()));
            if (droomtype.Rows[0]["Twin"].ToString() != "")
                DdlRoomType.Items.Add(new ListItem("Twin", droomtype.Rows[0]["Twin"].ToString()));
            //DdlRoomType.Attributes.Add("onChange", "getDropDownListvalue('" + dp.ClientID + "','" + lblprice2.ClientID + "')");
            //DdlRoomType.Attributes.Add("onChange", "getDropDownListvalue('" + DdlRoomType.ClientID + "','" + lbl_asianprice.ClientID + "')");
            //DdlRoomType.Items.Insert(0, "---Select One---");
            //DdlRoomType.SelectedIndex = 0;
            //DdlRoomType.Attributes.Add("onChange", "getDropDownListvalue('" + DdlRoomType.ClientID + "')");
        }
    }

i have enabled its autopost property true because on indexchange i want to bind a price with label i m getting a problem when i select any of the item the label is binded but again by default 1st is being selected i dont know where i have done mistake kindly help me out

Posted 8-Mar-11 0:23am

TanzeelAhmed

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Ryan Zahra · Answer 1 · 2011-03-08T00:41:00

In your code, you are checking if the page is not a postback. If its not a postback, it will execute the code in the if statement.

Therefore, if you're calling the above method after the selected index change, make sure to remove the if condition. See http://msdn.microsoft.com/en-us/library/system.web.ui.page.ispostback.aspx

After the binding, I would suggest to set the selected index to -1 in order not to have any item selected.