Filtering RadGrid

[ck]

Hi, I am new to telerik.

I am trying to implement basic filtering on a RadGrid control. the control has a LinqDataSource, as you will see from the snippet below. I can filter data with the "Donated" column which is of type Boolean and it works and the grid gets properly refreshed. however whenever i filter with any other column, be it Date or String it doesn't. I am following the example http://demos.telerik.com/aspnet-ajax/grid/examples/generalfeatures/filtering/defaultcs.aspx and the only difference i can see is the DataSource type, the example uses SQL while i am using Linq.

can anyone point me in the right direction please.
thank you

<telerik:RadGrid ID="PublicationsGrid" runat="server" GridLines="None"
        DataSourceID="PublicationsSource" AllowFilteringByColumn="True"
        AllowSorting="True" PageSize="12" ShowFooter="True" AllowPaging="False"
        AutoGenerateColumns="False" ShowStatusBar="true" EnableLinqExpressions="true">
        <ClientSettings EnableRowHoverStyle="True">
            <Selecting AllowRowSelect="True" EnableDragToSelectRows="False" />
        </ClientSettings>
        <MasterTableView DataSourceID="PublicationsSource" AllowFilteringByColumn="true">
            <CommandItemSettings ExportToPdfText="Export to PDF"></CommandItemSettings>
            <RowIndicatorColumn Visible="True" FilterControlAltText="Filter RowIndicator column">
            </RowIndicatorColumn>
            <ExpandCollapseColumn Visible="True" FilterControlAltText="Filter ExpandColumn column">
            </ExpandCollapseColumn>
            <Columns>
                <telerik:GridBoundColumn DataField="Isbn" FilterControlAltText="Filter Isbn column"
                    HeaderText="Isbn" SortExpression="Isbn" UniqueName="Isbn" AutoPostBackOnFilter="true">
                </telerik:GridBoundColumn>
                <telerik:GridBoundColumn DataField="Title" FilterControlAltText="Filter Title column"
                    HeaderText="Title" DataType="System.String" SortExpression="Title" UniqueName="Title" AutoPostBackOnFilter="true">
                </telerik:GridBoundColumn>
                <telerik:GridBoundColumn DataField="PublicationDate" DataFormatString="{0:dd/MM/yyyy}"
                    DataType="System.DateTime" FilterControlAltText="Filter PublicationDate column"
                    HeaderText="Date of publication" SortExpression="PublicationDate" UniqueName="PublicationDate" AutoPostBackOnFilter="true">
                </telerik:GridBoundColumn>
                <telerik:GridBoundColumn DataField="Pages" DataType="System.Int32" FilterControlAltText="Filter Pages column"
                    HeaderText="Pages" SortExpression="Pages" UniqueName="Pages" AllowFiltering="False">
                </telerik:GridBoundColumn>
                <telerik:GridCheckBoxColumn DataField="Donated" DataType="System.Boolean" FilterControlAltText="Filter Donated column"
                    HeaderText="Donated" SortExpression="Donated" UniqueName="Donated" AutoPostBackOnFilter="true">
                </telerik:GridCheckBoxColumn>
                <telerik:GridBoundColumn DataField="Cost" DataType="System.Double" FilterControlAltText="Filter Cost column"
                    HeaderText="Cost" SortExpression="Cost" UniqueName="Cost" AllowFiltering="False">
                </telerik:GridBoundColumn>
                <telerik:GridBoundColumn DataField="FullPrice" DataType="System.Double" FilterControlAltText="Filter FullPrice column"
                    HeaderText="Full Price" SortExpression="FullPrice" UniqueName="FullPrice" AllowFiltering="False">
                </telerik:GridBoundColumn>
                <telerik:GridBoundColumn DataField="DiscountPrice" DataType="System.Double" FilterControlAltText="Filter DiscountPrice column"
                    HeaderText="Discount Price" SortExpression="DiscountPrice" UniqueName="DiscountPrice"
                    AllowFiltering="False">
                </telerik:GridBoundColumn>
                <telerik:GridBoundColumn DataField="CurrentStockLevel" DataType="System.Int32" FilterControlAltText="Filter CurrentStockLevel column"
                    HeaderText="Current Stock Level" SortExpression="CurrentStockLevel" UniqueName="CurrentStockLevel"
                    AllowFiltering="False">
                </telerik:GridBoundColumn>
                <telerik:GridBoundColumn DataField="Language" FilterControlAltText="Filter Language column"
                    HeaderText="Language" SortExpression="Language" UniqueName="Language" AutoPostBackOnFilter="true">
                </telerik:GridBoundColumn>
            </Columns>
            <EditFormSettings>
                <EditColumn FilterControlAltText="Filter EditCommandColumn column">
                </EditColumn>
            </EditFormSettings>
        </MasterTableView>
        <FilterMenu EnableImageSprites="True">
        </FilterMenu>
    </telerik:RadGrid>
    <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" DefaultLoadingPanelID="RadAjaxLoadingPanel1">
        <AjaxSettings>
            <telerik:AjaxSetting AjaxControlID="PublicationsGrid">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="PublicationsGrid"></telerik:AjaxUpdatedControl>
                </UpdatedControls>
            </telerik:AjaxSetting>
        </AjaxSettings>
    </telerik:RadAjaxManager>
    <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server">
    </telerik:RadAjaxLoadingPanel>
    <asp:LinqDataSource ID="PublicationsSource" runat="server" ContextTypeName="App.Business.StockPubContainer"
        EntityTypeName="App.Business.Publication"
        TableName="Publication">
    </asp:LinqDataSource>

[Shinu]

Hi,

When you choose to apply filtering for bound grid column of type DateTime, Telerik RadGrid will filter the records in the corresponding column by fetching the user entry from the filter box in the following format - mm/dd/yyyy. Check the following help documentation which explains more about this.
Filtering for DateTime Bound Column with DataFormatString Different from mm/dd/yyyy

Thanks,
Shinu

[ck]

Hi thanks for your reply.
I actually tried that earlier but it did not work.
now what about string columns, it should be working out of the box i guess ,what am i missing?

regards

[Pavlina]

Hi Chad,

I suggest you try setting EnableLinqExpressions property to false and let me know if this makes any difference. Also ensure that you are using latest version of Telerik.Web.UI assembly.

Greetings,
Pavlina
the Telerik team