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I need a code in C#
like i am having an gridview and above the gridview i am having a drop down for different column in the dropDown i can select all the values or multiple values so can u please advice me on this how can i achieve this .

or in Short i want for gridview

A Multiple Selection DropDownList (a CheckBoxList Inside a DropDownList)


What I have tried:

i have code for gridview but multiple selection i need it
Posted
Updated 20-Jan-17 19:44pm
v2

1 solution

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Solution 1

Hi, For List Box
====================
<asp:ListBox runat="server" ID="ddlCarrier" ClientIDMode="Static" SelectionMode="Multiple"
Height="115" class="multi" TabIndex="2">

For Listbox Bind Using ajax
=========================
function bindInitialDropdownList() {
$.ajax({
type: "POST",
contentType: "application/json; charset=utf-8",
url: "Pagename/BindCarrier(method name)",
dataType: "json",
async: false,
success: function (data) {

var ddlData = '';
var i = 0;
$.each(data.d, function (key, value) {
ddlData += "" + value + "";
i++;
});
$("#ddlCarrier").append(ddlData);
$("#ClientContentPlaceHolder_hdnCarrierTot").val(i);
setupddlCarrier(true);

if ($('#ClientContentPlaceHolder_hdnCarrierIds').val() != "" && $('#ClientContentPlaceHolder_hdnCarrierIds').val() != "-1")
$('#ddlCarrier').multipleSelect("setSelects",
($('#ClientContentPlaceHolder_hdnCarrierIds').val()), "csv");

},
error: function (xmlHttpRequest, textStatus, errorThrown) {

}
});
}

Apply Web service call to bind MultiSelect DropDown

===================
[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public static Dictionary<string, string> BindCarrier()
{
//return Carrier Name ,and ID
}
   

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