How To Create SelectedIndexChange Event for DropDownList

http://myaspsnippets.blogspot.com/2012/10/gridview-dropdownlist-selected-index.html

http://asimsajjad.blogspot.com/2009/09/raising-dropdownlist.html

http://forums.asp.net/t/1410616.aspx?+SelectedIndexChanged+event+of+a+DropDownList+in+gridview+EditItemTemplate

http://p2p.wrox.com/asp-net-2-0-professional/75742-dropdownlist-selectedindexchanged-gridview.html

Hi Ankur Thanks for the reply i have done the same way but my selectedindex change is not firing,


My scenarioa is, my grid contains the itemtemplate with some labels which will diplays the search result(I have some text boxes and a Search Button, need to enter the search criteria and click search button), And I am adding the a next row (after the last row) dynamically with dropdownlist and some labels and i want to create a selected index change event for the dynamically created drop down list.



protected void grdProjectEmpDetails_RowDataBound(object sender, GridViewRowEventArgs e) {
try {
 EmployeeBillingBO generic = (EmployeeBillingBO) e.Row.DataItem; // Created new Row if (btnAddNewResource.UniqueID == this.GetPostBackControlID())
 {
 EmployeeBillingService gs = new EmployeeBillingService(this.ContextBO); //
List < EmployeeBillingBO > gList = var list = gs.GetEmployeeProjectDetails(28, 25855, sonStartDate1.Date, sonEndDate1.Date);
if (DataControlRowType.DataRow == e.Row.RowType && e.Row.RowState != DataControlRowState.Edit && (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate))
 {
Label lblOrbitProjectID = new Label();
 lblOrbitProjectID.ID = "lblOrbitProjectIDIns";
lblOrbitProjectID.Attributes.Add("runat", "server");
 Label lblEmployeeNameIns = new Label();
 lblEmployeeNameIns.ID = "lblEmployeeNameIns";
lblEmployeeNameIns.Attributes.Add("runat", "server");
 Label lblPoNumberIns = new Label(); //here i m adding a control.
 lblPoNumberIns.ID = "lblPoNumberIns";
 lblPoNumberIns.Attributes.Add("runat", "server");
 DropDownList ddlEmployeeCode = new DropDownList();
 ddlEmployeeCode.ID = "ddlEmployeeCode";
 ddlEmployeeCode.Attributes.Add("runat", "server");
 ddlEmployeeCode.AutoPostBack = true;
 DropDownList ddlEmployeeRole = new DropDownList();
 ddlEmployeeRole.ID = "ddlEmployeeRole";
 ddlEmployeeRole.Attributes.Add("runat", "server");
 int y = grdProjectEmpDetails.Rows.Count - list.Count;
for (int i = 0; i < y + 1; i++)
{
e.Row.Cells[0].Controls.Add(lblOrbitProjectID); e.Row.Cells[1].Controls.Add(ddlEmployeeCode); e.Row.Cells[2].Controls.Add(lblEmployeeNameIns); e.Row.Cells[3].Controls.Add(ddlEmployeeRole); //textbox is added as last column of grid EmployeeService employeeService = new EmployeeService(this.ContextBO);
 List < EmployeeBO > employeeList = new List < EmployeeBO > ();
 lblOrbitProjectID.Text = "25855";
lblPoNumberIns.Text = "PO12345"; //
 ddlEmployeeCode.Attributes.Add("onClick", "EmployeeName();"); ddlEmployeeCode.AppendDataBoundItems = true; employeeList = employeeService.GetEmployeeList();
 ddlEmployeeCode.DataSource = employeeList;
// ddlEmployeeCode.AutoPostBack = true; ddlEmployeeCode.SelectedIndexChanged += new System.EventHandler(this.ddlEmployeeCode_SelectedIndexChanged); //ddlEmployeeCode.SelectedIndexChanged +=ddlEmployeeCode_SelectedIndexChanged; ddlEmployeeCode.DataTextField = "EmployeeOrbitCode";
 ddlEmployeeCode.DataValueField = "EmployeeOrbitCode";
 ddlEmployeeCode.DataBind();
 LookupService lookUpService = new LookupService(this.ContextBO);
List < LookupBO > empRoleList = new List < LookupBO > (); ddlEmployeeRole.AppendDataBoundItems = true;
 empRoleList = lookUpService.GetLookUpValuesByLookupTypeID((int) LookupTableType.EmployeeRole);
ddlEmployeeRole.DataSource = empRoleList; ddlEmployeeRole.DataTextField =
 ddlEmployeeRole.DataValueField = "LookupDescription"; ddlEmployeeRole.DataBind();
 }
}
 }
}
 }


void ddlEmployeeCode_SelectedIndexChanged(object sender, EventArgs e)
{
DropDownList ddlEmployeeCode = (DropDownList) sender;
EmployeeService employeeService = new EmployeeService(this.ContextBO);
 List < EmployeeBO > employeeList = new List < EmployeeBO > ();
 foreach(GridViewRow row in grdProjectEmpDetails.Rows)
 {
 Label lblEmpname = (Label) row.FindControl("lblEmployeeNameIns") as Label; lblEmpname.Text = Convert.ToString(employeeService.GetEmployeeNameByEmpCode(Convert.ToInt32(ddlEmployeeCode.SelectedItem.Text))); }
 }

Hi!

Try like this...


ddl.SelectedIndexChanged += new System.EventHandler(ddl_SelectedValueChanged);

 privatevoid ddl_SelectedValueChanged(object sender, EventArgs e) 

{ //Do something here. 

}