Filter row disappears after filtering

[Matt]

Hi, hows it going?

I have a RadGrid control (2014.3.1024.45) that has paging, filtering, sorting and editing by template enabled. If I enter a filter value, the filter row in the grid disappears after the post back. The user is then unable to remove/change the filtering. Here my code:

<telerik:RadGrid runat="server" ID="rgdAddresses" AutoGenerateColumns="false" ShowStatusBar="true" AllowSorting="True" AllowFilteringByColumn="true"
        OnItemCommand="rgdAddresses_ItemCommand"
        OnNeedDataSource="rgdAddresses_NeedDataSource"
        OnInit="rgdAddresses_Init"
        OnItemDataBound="rgdAddresses_ItemDataBound"
        OnSortCommand="rgdAddresses_SortCommand">
        <MasterTableView DataKeyNames="Id, STACode" CommandItemDisplay="Top">
            <CommandItemSettings ShowExportToWordButton="true" ShowExportToExcelButton="true"
                ShowExportToCsvButton="true" ShowExportToPdfButton="false"
                ShowRefreshButton="false" ShowAddNewRecordButton="true" AddNewRecordText="New STA Address" />
            <Columns>
                <telerik:GridEditCommandColumn ButtonType="ImageButton" ItemStyle-Width="20px"  HeaderText="Edit" UniqueName="Edit" />
                <telerik:GridBoundColumn UniqueName="STACode" HeaderText="STA Code" DataField="STACode"  AllowFiltering="true" />
                <telerik:GridBoundColumn UniqueName="Name" HeaderText="Name" DataField="Name" AllowFiltering="true" />
                <telerik:GridBoundColumn UniqueName="AddressLine1" HeaderText="Address Line 1" DataField="AddressLine1" AllowFiltering="true" />
                <telerik:GridBoundColumn UniqueName="AddressLine2" HeaderText="Address Line 2" DataField="AddressLine2" Visible="false" />
                <telerik:GridBoundColumn UniqueName="AddressLine3" HeaderText="Address Line 3" DataField="AddressLine3" Visible="false" />
                <telerik:GridBoundColumn UniqueName="AddressLine4" HeaderText="Address Line 4" DataField="AddressLine4" Visible="false" />
                <telerik:GridBoundColumn UniqueName="City" HeaderText="City" DataField="City" AllowFiltering="true" />
                <telerik:GridBoundColumn UniqueName="Postcode" HeaderText="Postcode" DataField="Postcode" AllowFiltering="true" />
                <telerik:GridBoundColumn UniqueName="CountryCode" HeaderText="Country Code" DataField="CountryCode" Visible="false" />
                <telerik:GridBoundColumn UniqueName="TRNNumber" HeaderText="TRN Number" DataField="TRNNumber" AllowFiltering="true" />
                <telerik:GridBoundColumn UniqueName="DepotNumber" HeaderText="Depot Number" DataField="DepotNumber" Visible="false" />
                <telerik:GridBoundColumn UniqueName="DeliveryDayIndicator" HeaderText="Delivery Day Indicator" DataField="DeliveryDayIndicator"  />
                <telerik:GridTemplateColumn HeaderText="Active" UniqueName="Active" HeaderStyle-Width="30px" ItemStyle-HorizontalAlign="Center">
                    <ItemTemplate>
                        <asp:Image ID="imgActive" runat="server" ImageUrl="<%# GetBindingActiveImage() %>" />
                    </ItemTemplate>
                </telerik:GridTemplateColumn>
                <telerik:GridBoundColumn UniqueName="ActiveExport" HeaderText="Active" DataField="Active" Visible="false" />
                <telerik:GridTemplateColumn HeaderText="Mixed Marker" UniqueName="MixedMarker" HeaderStyle-Width="30px" ItemStyle-HorizontalAlign="Center">
                    <ItemTemplate>
                        <asp:Image ID="imgMixedMarker" runat="server" ImageUrl="<%# GetBindingMixedMarkerImage() %>" />
                    </ItemTemplate>
                </telerik:GridTemplateColumn>
                <telerik:GridBoundColumn UniqueName="MixedMarkerExport" HeaderText="Mixed Marker" DataField="MixedMarker" Visible="false" />

            </Columns>
            <EditFormSettings EditFormType="Template">
                <FormTemplate>
                    <table class="tableStyle">
                        <tr>
                            <td colspan="5">
                                <asp:Label ID="lblInstruction" runat="server" CssClass="subTitle" Text='<%# (Container is GridEditFormInsertItem) ? "Add a new STA Address" : "Edit existing STA Address" %>' />
                            </td>
                        </tr>
                        <tr>
                            <td style="width: 100px">
                                <asp:Label ID="lblSTACode" runat="server" CssClass="labelStyle" Text="STA Code:" />
                            </td>
                            <td>
                                <asp:TextBox ID="txtSTACode" runat="server" CssClass="textBoxStyle" Text='<%# Bind("STACode") %>' MaxLength="30"  TabIndex="1"/>
                            </td>
                            <td style="width: 30px"></td>
                            <td style="width: 120px">
                                <asp:Label ID="lblActive" runat="server" CssClass="labelStyle" Text="Active:" />
                            </td>
                            <td>
                                <asp:CheckBox ID="chkActive" runat="server" Checked='<%# (Container is GridEditFormInsertItem) ? true : Eval("Active")  %>' TabIndex="9" />
                            </td>
                        </tr>
                        <tr>
                            <td>
                                <asp:Label ID="lblName" runat="server" CssClass="labelStyle" Text="Name:" />
                            </td>
                            <td>
                                <asp:TextBox ID="txtName" runat="server" CssClass="textBoxStyle" Text='<%# Bind("Name") %>' MaxLength="50" TabIndex="2" />
                            </td>
                            <td></td>
                            <td>
                                <asp:Label ID="lblTRNNumber" runat="server" CssClass="labelStyle" Text="TRN Number:" />
                            </td>
                            <td>
                               <asp:TextBox ID="txtTRNNumber" runat="server" CssClass="textBoxStyle" Text='<%# Bind("TRNNumber") %>' MaxLength="6" TabIndex="10" />
                            </td>
                        </tr>
                        <tr>
                            <td>
                                <asp:Label ID="lblAddressLine1" runat="server" CssClass="labelStyle" Text="Address Line 1:" />
                            </td>
                            <td>
                                <asp:TextBox ID="txtAddressLine1" runat="server" CssClass="textBoxStyle" Text='<%# Bind("AddressLine1") %>' MaxLength="50" TabIndex="2" />
                            </td>
                            <td></td>
                            <td>
                                <asp:Label ID="lblDepotNumber" runat="server" CssClass="labelStyle" Text="Depot Number:" />
                            </td>
                            <td>
                                <asp:TextBox ID="txtDepotNumber" runat="server" CssClass="textBoxStyle" Text='<%# Bind("DepotNumber") %>' MaxLength="5" TabIndex="11"/>
                            </td>
                        </tr>
                        <tr>
                            <td>
                                <asp:Label ID="lblAddressLine2" runat="server" CssClass="labelStyle" Text="Address Line 2:"  />
                            </td>
                            <td>
                                <asp:TextBox ID="txtAddressLine2" runat="server" CssClass="textBoxStyle" Text='<%# Bind("AddressLine2") %>' MaxLength="30" TabIndex="3" />
                            </td>
                            <td></td>
                            <td>
                                <asp:Label ID="lblMixedMarker" runat="server" CssClass="labelStyle" Text="Mixed Marker:" />
                            </td>
                            <td>
                                <asp:Label ID="lblMixedMarkerValue" runat="server" CssClass="labelStyle" Text='<%# (Container is GridEditFormInsertItem) ? "True" : Eval("MixedMarker") %>' />
                            </td>
                        </tr>
                        <tr>
                            <td>
                                <asp:Label ID="lblAddressLine3" runat="server" CssClass="labelStyle" Text="Address Line 3:" />
                            </td>
                            <td>
                                <asp:TextBox ID="txtAddressLine3" runat="server" CssClass="textBoxStyle" Text='<%# Bind("AddressLine3") %>' MaxLength="30" TabIndex="4"/>
                            </td>
                            <td></td>
                            <td>
                                <asp:Label ID="lblDeliveryDay" runat="server" CssClass="labelStyle" Text="Delivery Day Indicator:" />
                            </td>
                            <td>
                                <asp:Label ID="lblDeliveryDayValue" runat="server" CssClass="labelStyle" Text='<%# (Container is GridEditFormInsertItem) ? "0" : Eval("DeliveryDayIndicator") %>' />
                            </td>
                        </tr>
                        <tr>
                            <td>
                                <asp:Label ID="lblAddressLine4" runat="server" CssClass="labelStyle" Text="Address Line 4:" />
                            </td>
                            <td>
                                <asp:TextBox ID="txtAddressLine4" runat="server" CssClass="textBoxStyle" Text='<%# Bind("AddressLine4") %>' MaxLength="30" TabIndex="5" />
                            </td>
                            <td></td>
                            <td></td>
                            <td></td>
                        </tr>
                        <tr>
                            <td>
                                <asp:Label ID="lblCity" runat="server" CssClass="labelStyle" Text="City:" />
                            </td>
                            <td>
                                <asp:TextBox ID="txtCity" runat="server" CssClass="textBoxStyle" Text='<%# Bind("City") %>' MaxLength="30" TabIndex="6" />
                            </td>
                            <td></td>
                            <td></td>
                            <td></td>
                        </tr>
                        <tr>
                            <td>
                                <asp:Label ID="lblPostcode" runat="server" CssClass="labelStyle" Text="Postcode:" />
                            </td>
                            <td>
                                <asp:TextBox ID="txtPostcode" runat="server" CssClass="textBoxStyle" Text='<%# Bind("Postcode") %>' MaxLength="10" TabIndex="7" />
                            </td>
                            <td></td>
                            <td></td>
                            <td></td>
                        </tr>
                        <tr>
                            <td>
                                <asp:Label ID="lblCountryCode" runat="server" CssClass="labelStyle" Text="Country Code:" />
                            </td>
                            <td>
                                <asp:TextBox ID="txtCountryCode" runat="server" CssClass="textBoxStyle" Text='<%# Bind("CountryCode") %>' MaxLength="5" TabIndex="8" />
                            </td>
                            <td></td>
                            <td></td>
                            <td></td>
                        </tr>

                    </table>
                    <table class="tableStyle">
                        <tr>
                            <td>
                                <telerik:RadButton ID="btnSave" runat="server" Text="Save"
                                    CommandName='<%# (Container is GridEditFormInsertItem) ? "PerformInsert" : "Update" %>' />
                            </td>
                            <td>
                                <telerik:RadButton ID="btnCancel" runat="server" Text="Cancel" CausesValidation="false" CommandName="Cancel" />
                            </td>
                        </tr>
                    </table>
                </FormTemplate>
            </EditFormSettings>
        </MasterTableView>
    </telerik:RadGrid>

What am I doing wrong?

Thanks in advance,

Matt

[Eyup]

Hi Matt,

This issue is very strange, indeed. Can you check whether you are not hiding the filter item on the code-behind using the Visible or IsFilterItemExpanded properties?

I've created a sample RadGrid web site using the provided mark-up to test the described behavior. On my side the filtering works as expected. Please run the attached application and let me know about the result from your end.

Regards,
Eyup
Telerik

 

 

[Matt]

Hi Eyup,

Found it. My ItemCommand c# method had a bug! I perform a switch on the e.CommandName and I have a default case that sets e.Item.Expanded = false;.

I've added;

case RadGrid.FilterCommandName
{
     // Do nothing
      break;

}

and fixed this problem.

Thanks for pointing me in the right direction.
Matt