[Solved] Heirarchical RadGrid Select/Scroll bug?

[Michael Love]

 

 

Hi there.

I have a RadGrid that has Master/Detail tables in it. I have purposely removed the expand/collapse column and made the grid expand/collapse when the row is selected (on item command). My grid is a single select grid, but when I select a master table row, then scroll so that the selected row is no longer visible, then select another row, the grid has 2 rows selected. This does not occur when I select multiple rows on the same viewable region in the grid. I am coding around this issue right now, by looking to see if the selected row count is > 1, then clearing the selection appropriately. I obviously have something setup incorrectly. Any ideas?

 

Here is my relevant code-behind code:

 

        override protected void OnInit(EventArgs e)
        {
            this.Load += new System.EventHandler(this.Page_Load);
            this.rgT.NeedDataSource += new GridNeedDataSourceEventHandler(this.rgTask_NeedDataSource);
            this.rgT.DetailTableDataBind += new GridDetailTableDataBindEventHandler(this.rgT_DetailDataBind);
            this.cbOperators.SelectedIndexChanged += new RadComboBoxSelectedIndexChangedEventHandler(cbOperators_SelectedIndexChanged);
            this.rgT.ItemDataBound += new GridItemEventHandler(rgT_ItemDataBound);
            this.rgT.ItemCommand += new GridCommandEventHandler(rgT_ItemCommand);
            this.btnAddTask.Click += new EventHandler(this.btnAddTask_Click);
            this.btnEdit.Click += new EventHandler(this.btnEdit_Click);
            this.btnDelete.Click += new EventHandler(this.btnDelete_Click);
            this.btnQualifiers.Click += new EventHandler(this.btnQualifiers_Click);
            this.btnBack.Click += new EventHandler(this.btnBack_Click);
            this.btnBulkLoad.Click += new EventHandler(this.btnBulkLoad_Click);
            base.OnInit(e);
        }

        protected void rgT_ItemCommand(object source, GridCommandEventArgs e)
        {
            if (e.CommandName == "RowClick")
            {
                // row is selected, enable appropriate buttons
                EnableButtons(true);

                // toggle the row expansion
                GridDataItem item = (GridDataItem)e.Item;
                item.Expanded = !item.Expanded;
            }
        }

        protected void rgT_DetailDataBind(object source, GridDetailTableDataBindEventArgs e)
        {
            GridDataItem dataItem = (GridDataItem)e.DetailTableView.ParentItem;
            if (rgT.SelectedItems.Count > 0)
            {
                long TaskId = (long)rgT.MasterTableView.DataKeyValues[rgT.SelectedItems[0].ItemIndex]["TaskId"];

                e.DetailTableView.DataSource = BLQualifierSet.SelectQualifiersByTask(TaskId);
            }
        }

My grid:

                <telerik:RadGrid ID="rgT" runat="server" GridLines="None"
                    AutoGenerateColumns="False" AllowSorting="True"
                    Width="100%" AllowMultiRowSelection="false">
                    <MasterTableView CellSpacing="-1" DataKeyNames="TaskId" TableLayout="Fixed" ExpandCollapseColumn-Display="False">
                        <Columns>
                            <telerik:GridBoundColumn DataField="Number" UniqueName="colNumber" HeaderText="Number" HeaderStyle-Width="5%">
                            </telerik:GridBoundColumn>
                            <telerik:GridBoundColumn DataField="Name" UniqueName="colName" HeaderText="Title" HeaderStyle-Width="85%">
                            </telerik:GridBoundColumn>
                            <telerik:GridTemplateColumn DataField="SpanControlRatio" HeaderText="SOC" HeaderStyle-Width="10%"
                                UniqueName="colSpanControlRatio">
                                <ItemTemplate>
                                    <asp:Label ID="lblSOCRatio" runat="server"
                                        Text='<%# Eval("SpanControlRatio") %>'></asp:Label>
                                </ItemTemplate>
                            </telerik:GridTemplateColumn>
                        </Columns>
                        <DetailTables>
                            <telerik:GridTableView DataKeyNames="QualifierSetID" Name="QualifierSets" Width="100%" TableLayout="Fixed">
                            <ParentTableRelation>
                                <telerik:GridRelationFields DetailKeyField="TaskId" MasterKeyField="TaskId" />
                            </ParentTableRelation>
                             <Columns>
                                 <telerik:GridTemplateColumn HeaderStyle-Width="5%" ItemStyle-ForeColor="Red">
                                     <ItemTemplate><asp:Label id="rowNum" runat="server"></asp:Label>
                                     </ItemTemplate>
                                 </telerik:GridTemplateColumn>
                                 <telerik:GridBoundColumn HeaderText="Provider" DataField="ProviderName" DataType="System.String" HeaderStyle-Width="15%"></telerik:GridBoundColumn>
                                 <telerik:GridBoundColumn HeaderText="Evaluations" DataField="QualifierName" DataType="System.String" HeaderStyle-Width="55%"></telerik:GridBoundColumn>
                                 <telerik:GridBoundColumn HeaderText="Method" DataField="QualifierType" DataType="System.String" HeaderStyle-Width="10%"></telerik:GridBoundColumn>
                                 <telerik:GridBoundColumn HeaderText="Re-Evaluation Frequency" DataField="ReevaluationFrequency" HeaderStyle-Width="15%" DataType="System.Int32"></telerik:GridBoundColumn>
                             </Columns>
                            <GroupByExpressions>
                                <telerik:GridGroupByExpression>
                                    <GroupByFields>
                                        <telerik:GridGroupByField FieldName="QualifierSetId" />
                                    </GroupByFields>
                                    <SelectFields>
                                        <telerik:GridGroupByField FieldName="EmptyString" HeaderText="Evaluation Set" HeaderValueSeparator=" "/>
                                    </SelectFields>
                                </telerik:GridGroupByExpression>
                            </GroupByExpressions>
                            </telerik:GridTableView>
                        </DetailTables>
                    </MasterTableView>
                    <ClientSettings EnablePostBackOnRowClick="true">
                        <Selecting AllowRowSelect="True" />
                        <Scrolling AllowScroll="True" UseStaticHeaders="True" ScrollHeight="300px"/>
                    </ClientSettings>
                </telerik:RadGrid>

[Pavlina]

Hello Michael,

The multi selection issue is a known bug. It is already fixed in the latest official version of RadControls for ASP.NET AJAX. 
For more details on how to upgrade please read the following Knowledge Base article.

I hope this helps.

Regards,
Pavlina
the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Watch a video on how to optimize your support resource searches and check out more tips on the blogs.