SelectedIndexChanged Event Doesn't Fire When Create A Dropdownlist In Code-behind
Dec 9, 2010
I create a dropDownList in code-behind, in selectIndexChange of another dropDownList, and add this new dropDownList to page using a placerHolder, everthing its ok, but new dropdownlist selectIndexChange event dont fire!
code of dropDownList creation
dropDown = new DropDownList();
dropDown.AutoPostBack = true;
dropDown.ID = idSubistema;
dropDown.Width = 400;
dropDown.CssClass = "controltext";
dropDown.DataValueField = "IDNivel";
dropDown.DataTextField = "NIVEL";
dropDown.EnableViewState = true;
dropDown.DataSource =
DBLibray.DefinitionIndicadores.spSelect_FillCombosWithNivelByIdParent(
ref dataConnector,
Convert.ToInt32(idSubistema));
dropDown.DataBind();
dropDown.SelectedIndexChanged += new EventHandler(indexChange);
//dropDown.PreRender += new EventHandler(dropDown_PreRender);
placeHolderForCombos.Controls.Add(new LiteralControl("<div>"));
placeHolderForCombos.Controls.Add(lb);
placeHolderForCombos.Controls.Add(new LiteralControl("<br>"));
placeHolderForCombos.Controls.Add(dropDown);
placeHolderForCombos.Controls.Add(new LiteralControl("</div>"));
placeHolderForCombos.Controls.Add(new LiteralControl("<br>"));
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Nov 2, 2010
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code behind:
Protected Sub ddlBusinessUnit_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs)
Response.Write("Hello")
End
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[code]....
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[URL]
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[Code]....
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i read article "using javascript with asp.net radiobuttonlist control" and i found it useful.
[var RB1 = document.getElementById("<%=RadioButtonList1.ClientID%>");
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if am setting radio[1].checked = 1; the item is checked. ]
step1: radio[0]=checked
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radio[2]=not checked
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I have a dropdownlist inside a formview and I'm trying to do something on the selectedindexchanged event. but I'm getting the following error:
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Server Error in '/WebSite4' Application. Compilation Error
Description:
An error occurred during the compilation of a resource required to service this request.
review the following specific error details and modify your source code appropriately. Compiler Error Message: BC30506: Handles clause requires a WithEvents variable defined in the containing type or one of its base types.
Source Error:
[Code]....
Line 13:End If
Line 14:End Sub
Line 15:Protected Sub ddlDept_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ddlDept.SelectedIndexChanged
Line 16: Dim ComDropDownList As DropDownList = CType(FormView1.FindControl("ddlCommune"), DropDownList)
Line 17:
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[Code]....
if this dropdownlist selectedIndexchanged event firing. Because of I am loading webcontrols each masterpage's PageLoadEvent.
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I couldnt find the main reason why a dropdownlist selectedIndexchanged event firing without I changed anything on that dropdownlist.
what reasons may cause this problem ? if you say viewstate its turned on defaultly. any other reason you know why ?
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[Code]....
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[Code]....
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protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
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public void load() {
try {
string sCon = gv.constr;
MySqlConnection con = new MySqlConnection(sCon);
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String s = "Select * from company";
MySqlCommand cmd = new MySqlCommand(s, con);
[Code] ...
I used to done select index change event on drop down list bt it's not working... I want select index value of drop down list item into textbox....wat i do?
protected void drpOrg_SelectedIndexChanged(object sender, EventArgs e){
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con.Open();
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[Code] ....
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[Code]....
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Here is my gridview control: [URL]
Here is my codebehind code: [URL]
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