[Solved] How to access FilterTemplate at server side.

[Josh]

Hi all,

        I am using FilterTemplate to one of the column at clientside binding as :

<telerik:GridBoundColumn DataField="Name" HeaderText="Name" SortExpression="Name"

                        UniqueName="Name">

                        <FilterTemplate>

                        <telerik:RadComboBox ID="radFilterComboBox" DataTextField="Name" runat="server" AutoPostBack="true" ShowToggleImage="true" 

                                             OnSelectedIndexChanged="radFilterComboBox_SelectedIndexChanged" Skin="Office2007" 

                                             Width="300" OnItemsRequested="radFilterComboBox_ItemsRequested">

                        </telerik:RadComboBox> 

                        </FilterTemplate>

                    </telerik:GridBoundColumn>

  1)    Now i need to populate this ComboBox with the Names which are in Name field(shown). And by the way i am not using SqlDataSource, instead using LINQ queries to bind grid at server side.

  2)   How to access this "radFilterComboBox" at codebehind in page_load. 

        Thanks in advance. 

[Shinu]

Hi Josh,

Try accessing the ComboBox from the filterTemplate in the PreRender event of the Grid.

CS:

protected void RadGrid1_PreRender(object sender, EventArgs e)
    {
        foreach (GridFilteringItem filter in RadGrid1.MasterTableView.GetItems(GridItemType.FilteringItem))
        {
            RadComboBox combo = (RadComboBox)filter.FindControl("radFilterComboBox");
            //populate the combobox
        }
    }

Thanks
Shinu

[David]

I am trying this and the width items works fine, but the Skin is not being applied.
I am using an Application variable because the users are allowed to pick a skin they like in setup.
Any thing i am missing ?

 

 

For Each filter As GridFilteringItem In rgQuotes.MasterTableView.GetItems(GridItemType.FilteringItem)




'populate the combobox

Dim StatusDDL As RadComboBox = DirectCast(filter.FindControl("RadComboBoxStatus"), RadComboBox)

StatusDDL.Width = Unit.Pixel(100)

StatusDDL.DropDownWidth = Unit.Pixel(160)

StatusDDL.Skin = Application("TelerikTheme")



Next

 

[David]

I got this to work but i don't understand why.

The code i called - after the piece I posted above - was a dfault sort.

        'DEFAULT SORT
        If Not Page.IsPostBack Then
            Dim expression As GridSortExpression = New GridSortExpression()
            expression.FieldName = "QuoteDate"
            expression.SortOrder = GridSortOrder.Descending
            rgQuotes.MasterTableView.SortExpressions.AddSortExpression(expression)
            rgQuotes.MasterTableView.Rebind()
        End If

This code has a rebind call.   if it runs before the code for the filter, the conbobox is skinned,  if it runs after, it is not.

Similarly I have some javascript from the forum that will show or hide the filter row based on  a radio button selection, a cookie on page load.

            <script type="text/javascript">

                function pageLoad(sender, eventArgs) {

                    var filter = getCookie("filter");
                    if (filter != "on")
                        $find('<%=rgQuotes.ClientID %>').get_masterTableView().hideFilterItem();
                    //$find('<%=rgQuotes.ClientID %>').get_masterTableView().rebind();

                }

                function showFilterItem() {

                    var masterTable = $find("<%= rgQuotes.ClientID %>").get_masterTableView();
                    masterTable.showFilterItem();
                    //masterTable.rebind();
                    setCookie("filter", "on", 7);

                }
                function hideFilterItem() {

                    var masterTable = $find("<%= rgQuotes.ClientID %>").get_masterTableView();
                    masterTable.hideFilterItem();
                    //masterTable.rebind();
                    setCookie("filter", "off", 7);
                }
            </script>

The 3 functions called rebind and made the client side ajax loading graphic fire. I took out the rebind calls and the hiding/showing of filter row still worked but  the skins went away. 

The place i could not remove the rebind was the Default filter, or it didn;t actually sort it.


So I guess it seems necessary, but i guess my question is where is the most efficient place to call rebind and make sure my customizations all work, and so i only call it once !!   In the first build of this I would have been calling it 2-3 times per page.