选定索引更改下拉列表 asp.net 更新面板后 Jquery 数据表丢失

Question

i have added jquery library to my gridview and it was really helpfull. when on page load this datatable show perfectly, but when I change value of dropdown list jquery datatable disapper. in this case, gridview just showing data based on dropdown list parameters value. I follow this tutorial .

link jquery reference:

<link type="text/css" rel="stylesheet" href="https://cdn.datatables.net/1.10.9/css/dataTables.bootstrap.min.css" />
<link type="text/css" rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" />
<link type="text/css" rel="stylesheet" href="https://cdn.datatables.net/responsive/1.0.7/css/responsive.bootstrap.min.css" />
<script type="text/javascript" src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/1.10.9/js/jquery.dataTables.min.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/responsive/1.0.7/js/dataTables.responsive.min.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/1.10.9/js/dataTables.bootstrap.min.js"></script>
<script type="text/javascript" src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>

set javascript sintax to gridview:

<script type="text/javascript">
    //on page load
    $(function () {
        $('[id*=GridView1]').prepend($("<thead></thead>").append($(this).find("tr:first"))).DataTable({
            "responsive": true,
            "sPaginationType": "full_numbers"
        });
    });

</script>

here is my gridview asp.net:

<form id="form1" runat="server">
    <div>
        <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
        <asp:UpdatePanel ID="UpdatePanel1" runat="server" RenderMode="Inline">
            <ContentTemplate>
                <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="true" DataTextField="Name" DataValueField="Name" 
                OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged" Width="30%" placeholder="select">
                </asp:DropDownList>
                <br />
                <br />
                <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
                <br />
                <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" class="table table-striped"
                    Width="100%" OnRowCommand="GridView1_RowCommand">
                    <Columns>
                        <asp:BoundField DataField="Name" HeaderText="Name" />
                        <asp:BoundField DataField="Address" HeaderText="Address" />
                        <asp:ButtonField CommandName="editRecord" ControlStyle-CssClass="btn btn-info"
                            ButtonType="Button" Text="Edit" HeaderText="Edit Record" HeaderStyle-Width="10%">
                            <ControlStyle CssClass="btn btn-info"></ControlStyle>
                        </asp:ButtonField>
                    </Columns>
                </asp:GridView>
            </ContentTemplate>
        </asp:UpdatePanel>
    </div>
</form>

when I run this page,it worked:

BUT after i tried select one of value of dropdown list, datatable jquery didn't appear any more.

need suggest for this issue and fix this. Thanks

Answer 1

You have to rebind your datatable after postback. It happens now only during load. After every postback rebind the table

This is probably what you are searching for

pageLoad() will be triggered after every postback

function pageLoad() { 
         bindGrid();
};

function bindGrid(){
      $('[id*=GridView1]').prepend($("<thead></thead>").append($(this).find("tr:first"))).DataTable({
      "responsive": true,
      "sPaginationType": "full_numbers"
   });
};

it does require to be on page.

<asp:ScriptManager runat="server" />

A other option instead of pageload is

Sys.WebForms.PageRequestManager.getInstance().add_endRequest(bindGrid);