Dropdownlist selected item text always returning the first item text

Question

i am using this code to fill dropdownlist from database.

public void fillcountry()
{
    BL obj = new BL();
    DataSet ds = obj.dss("select * from Country  ");
    drplistcountry.DataSource = ds;
    drplistcountry.DataTextField = "CountryName";
    drplistcountry.DataValueField = "CountryId";
    drplistcountry.DataBind();
    drplistcountry.Items.Insert(0, new ListItem("--Select--", "0"));
}

i am Using this fillcountry() in page load() event. and Rerutning selecteditm.text on Button Click event

drplistcountry is always showing First index text , How to solve it?

Answer 1

In .aspx page:

<%@ Page Title="Home Page" Language="C#" AutoEventWireup="true"
CodeBehind="Default.aspx.cs" Inherits="WebApplication4._Default" 
EnableViewState="true" %>

For Dropdownlist Control set EnableViewState property to true.

In .aspx.cs page:

In PageLoad event check for following:

if(!IsPostBack)
{ 
    fillcountry();
}

Answer 2

Try this code

And you shoud call this function only once.

 public void fillcountry()
    {
        BL obj = new BL();
        DataSet ds = obj.dss("select * from Country  ");
        drplistcountry.DataSource = ds;
        drplistcountry.DataTextField = "CountryName";
        drplistcountry.DataValueField = "CountryId";
        drplistcountry.DataBind();
        drplistcountry.Items.Insert(0, new ListItem("--Select--", "0"));
        drplistcountry.SelectedIndex = drplistcountry.Items.IndexOf(drplistcountry.Items.FindByText("--Select--"));
    }