Web application Dropdownlist

Question

hi Friends i am having 4 dropdownlists in my web page...when i select first one releated data is foing to be displayed in second dropdown list... and i select 3rd dropdownlist releated data will be display in dropdownlist4....how to do this ....please help me

srikanthreddy · Answer

thank you very much.. i have problem with dropdownlist 3 and dropdownlist 4....can u please tell me how to solve this problem...........

Suthish Nair · Answer

Another option is AJAX control toolkit Cascading combo box.

khaleel shaik · Answer

when first dropdown list selectindexchanged event you call call the next drop down list control information

Satyapriya Nayak · Answer

Hi srikanthreddy Try this... Untitled Page onselectedindexchanged=DropDownList1_SelectedIndexChanged> using System; using System.Collections; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; using System.Data.SqlClient; namespace Dropdownlist4 { public partial class _Default : System.Web.UI.Page { string strConnString = ConfigurationManager.ConnectionStrings[ConnectionString].ConnectionString; string str; SqlCommand com; protected void Page_Load(object sender EventArgs e) { DropDownList1.AutoPostBack = true; SqlConnection con = new SqlConnection(strConnString); if (!IsPostBack) { DropDownList1.Items.Add(Choose id); con.Open(); str = select * from test; com = new SqlCommand(str con); SqlDataReader reader = com.ExecuteReader(); while (reader.Read()) { DropDownList1.Items.Add(reader[id].ToString()); } reader.Close(); con.Close(); } DropDownList2.Items.Clear(); } protected void DropDownList1_SelectedIndexChanged(object sender EventArgs e) { DropDownList1.AutoPostBack = true; SqlConnection con = new SqlConnection(strConnString); con.Open(); str = select * from test where id=' + DropDownList1.SelectedItem.Text + '; com = new SqlCommand(str con); SqlDataReader reader = com.ExecuteReader(); while (reader.Read()) { DropDownList2.Items.Add(reader[name].ToString()); } reader.Close(); con.Close(); } } } Thanks

Krishna Garad · Answer

pull the data in dropdownlist_selectedindexchanged event to bind one by one dropdowns.