[Solved] Groups Not Collapsing When Clicked

[Jason]

Hi Everyone,

We are using a RadGrid and have implemented a GroupByExpressions code block to group our data by day. The grid properly groups and sorts the data based on the parameters we set, but when you click on the "down facing" arrow to collapse a given section, nothing happens.

We removed all update panels encapsulating the grid and we noticed that the grid produces a PostBack when the arrow is clicked, but nothing happens. We also tried adding a RadAjaxManager and RadAjaxLoadingPanel as seen in the RadGrid grouping demo.

Any help you can provide on this matter is greatly appreciated. Our code is below.

Thanks.

Code:

<Telerik:RadGrid
    ID="trgGrid"
    runat="server"
    DataSourceID="dsSource"
    AutoGenerateColumns="False"
    GridLines="None"
    Skin="Hay">

    <MasterTableView DataSourceID="dsSource">
    <RowIndicatorColumn Visible="False">
    <HeaderStyle Width="20px"></HeaderStyle>
    </RowIndicatorColumn>

    <ExpandCollapseColumn Visible="False" Resizable="False">
    <HeaderStyle Width="20px"></HeaderStyle>
    </ExpandCollapseColumn>
        <GroupByExpressions>
            <Telerik:GridGroupByExpression>
                <SelectFields>
                    <Telerik:GridGroupByField
                        FieldAlias="Date"
                        FieldName="StartDateOnly"
                        HeaderValueSeparator=": "
                        FormatString="{0:D}"
                    />
                </SelectFields>
                <GroupByFields>
                    <Telerik:GridGroupByField
                        FieldName="StartDateOnly"
                        SortOrder="Descending"
                    />
                </GroupByFields>
            </Telerik:GridGroupByExpression>
        </GroupByExpressions>
        <Columns>
            <Telerik:GridTemplateColumn UniqueName="TemplateColumn">
                <ItemTemplate>
                  <asp:LinkButton ID="btn" runat="server"
                    CommandName="myCommand"
                    Text="<%$Resources:ascx.TelerikReservationsGrid, trgGrid_btn_Text %>"
                    CausesValidation="false"
                  />
                </ItemTemplate>
            </Telerik:GridTemplateColumn>
            <Telerik:GridTemplateColumn UniqueName="TemplateColumn2" HeaderText="<%$Resources:ascx.TelerikReservationsGrid, trgGrid_colRange_Text %>">
                <ItemTemplate>
                  <%# Eval("Range") %>
                </ItemTemplate>
            </Telerik:GridTemplateColumn>
            <Telerik:GridTemplateColumn UniqueName="TemplateColumn3" HeaderText="<%$Resources:ascx.TelerikReservationsGrid, trgGrid_colName_Text %>">
                <ItemTemplate>
                  <%# Eval("Name") %>
                </ItemTemplate>
            </Telerik:GridTemplateColumn>
            <Telerik:GridTemplateColumn UniqueName="TemplateColumn4" HeaderText="<%$Resources:ascx.TelerikReservationsGrid, trgGrid_colType_Text %>">
                <ItemTemplate>
                    <%# Eval("Type") %>
                </ItemTemplate>
            </Telerik:GridTemplateColumn>
            <Telerik:GridTemplateColumn UniqueName="TemplateColumn5" HeaderText="<%$Resources:ascx.TelerikReservationsGrid, trgGrid_colTitle_Text %>">
                <ItemTemplate>
                    <%# Eval("Title") %>
                </ItemTemplate>
            </Telerik:GridTemplateColumn>
            <Telerik:GridTemplateColumn UniqueName="TemplateColumn6" HeaderText="<%$Resources:ascx.TelerikReservationsGrid, trgGrid_colRemaining_Text %>">
                <ItemTemplate>
                    <%# Eval("Remaining") %>
                </ItemTemplate>
            </Telerik:GridTemplateColumn>
        </Columns>

    <EditFormSettings>
    <PopUpSettings ScrollBars="None"></PopUpSettings>
    </EditFormSettings>
    </MasterTableView>
</Telerik:RadGrid>
<MyClass:MyDataSource ID="dsSource" runat="server" EnablePaging="true" />

[Pavlina]

Hi Jason,

I went through your code and was not able to find what have caused the unexpected behavior.
When you set the GroupByExpression property for a GridTemplateColumn instance, a common problem is that RadGrid cannot get the value from the header text for that column and display it in the GroupHeaderItem. In such cases you need to use the FieldAlias property.
Find more information about Group by expression in the following articles:
Help topic
Demo

Best wishes,

Pavlina

the Telerik team

 

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