Cascading dropdown move back to its 1st index automatic

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Hello,
Right now i am working on a project,i am facing a problem in cascading dropdown
I have three drop down and i had filled dropdown1 succesfully and then i had filled dropdown two on selected index of dpd1 and then drop three on selected index of dpd2.....now what happen when i am selecting index of dpd2 then it automaticali move back to is selcted index 1 on. so please help me where i am lacking in my code and it happen so...my code is like...

C#

//fill Asset site dropdown at form load
 ut.dropdownlistBind(DropDownList6, "SELECT [Site_ID],[Site_Name] FROM [FacilitiesManagementDB ].[dbo].[AssetSiteDetails] where [Company_ID]='" + Session["compid"].ToString().Trim() + "' order by [Site_Name] ", "Site_Name", "Site_ID");
 ddlAssetSite.Items.Insert(0, "----Select Site----");


//fill site block dropdown
protected void DropDownList6_SelectedIndexChanged(object sender, EventArgs e)
 {
 //fill Site Block
  ut.dropdownlistBind(DropDownList9, "SELECT distinct [Site_ID],[RoomLocation] FROM [FacilitiesManagementDB ].[dbo].[Room_mst1] where [Company_ID]='" + Session["compid"].ToString().Trim() + "' and Site_ID='" + DropDownList6.SelectedValue.ToString() + "' order by [RoomLocation] ", "RoomLocation", "Site_ID");
DropDownList9.Items.Insert(0, "----Select Block----");     
      }


  //fll site-block-room dropdown
 protected void DropDownList7_SelectedIndexChanged(object sender, EventArgs e)
 {
  //fill Site-Blocks-Rooms
  ut.dropdownlistBind(DropDownList8, "SELECT  [Site_ID],[RoomNo],[RoomLocation] FROM [FacilitiesManagementDB ].[dbo].[Room_mst1] where [Company_ID]='" + Session["compid"].ToString().Trim() + "' and Site_ID='" + DropDownList6.SelectedValue.ToString() + "' and RoomLocation='" + DropDownList7.SelectedItem.ToString() + "' order by [RoomNo] ", "RoomNo", "RoomLocation");
  DropDownList8.Items.Insert(0, "----Select Room----");
      }

i am also using Ajax tool kit script manager is there any problem due to that..

Thanx in advance...

Posted 25-Sep-12 0:32am

karansaxena08

Updated 25-Sep-12 0:45am

v3

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Comments

vaibhav mahajan 25-Sep-12 6:47am

pls debug ur code...r u filling ur drop down on page load?

karansaxena08 25-Sep-12 7:05am

yes vaibhav i have fill dropdown on page load as well as i also debuged...but problem is still same..

vaibhav mahajan 25-Sep-12 7:15am

fill the first drop down in !ispostback..then 2 nd on the selected index change of 1 st....n similarly for 3rd..
hope this will solve

[no name] 25-Sep-12 7:09am

ispostback or !ispostback..?

karansaxena08 25-Sep-12 7:38am

still not working..

1 solution

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Amol_27101982, India · Answer 1 · 2012-09-25T06:14:00

Solution 1

Your code to populate dropdown should be inside IsPostback condition as follows:

Page_Load()
{
if(!Page.IsPostback)
{
FillDropdown()//Populate dropdown here
}
}

Posted 25-Sep-12 6:14am

Amol_27101982, India