[Solved] Combo in Grid(Master) not showing text on Detail grid Expanded

[Shafees]

<telerik:RadGrid ID="radGridActivity" runat="server" OnNeedDataSource="radGridActivity_NeedDataSource"
                            OnDeleteCommand="radGridActivity_DeleteCommand" Skin="Windows7" GridLines="None"
                            ShowStatusBar="True" OnInsertCommand="radGridActivity_InsertCommand" OnUpdateCommand="radGridActivity_UpdateCommand"
                            AutoGenerateColumns="False" OnItemCreated="radGridActivity_ItemCreated" OnItemDataBound="radGridActivity_ItemDataBound"
                            Width="1550px" OnDetailTableDataBind="radGridActivity_DetailTableDataBind">
                            <MasterTableView DataKeyNames="autoId" CommandItemDisplay="None" EditMode="EditForms"
                                Name="ContractActivity" NoMasterRecordsText="Select Contract To View And Add Activity">
                                <DetailTables>
                                    <telerik:GridTableView DataKeyNames="autoId_Items" Name="ContractActivityItems">
                                        <Columns>
                                            <telerik:GridBoundColumn DataField="cavtActivity" HeaderText="cavtActivity" UniqueName="cavtActivity">
                                                <HeaderStyle HorizontalAlign="Center" Width="150px" />
                                                <ItemStyle HorizontalAlign="Left" />
                                            </telerik:GridBoundColumn>
                                        </Columns>
                                    </telerik:GridTableView>
                                </DetailTables>
                                <Columns>
                                    <telerik:GridEditCommandColumn ButtonType="ImageButton" HeaderButtonType="None" HeaderText="Edit">
                                        <HeaderStyle HorizontalAlign="Center" Width="35px" />
                                        <ItemStyle HorizontalAlign="Center" />
                                    </telerik:GridEditCommandColumn>
                                    <telerik:GridButtonColumn ButtonType="ImageButton" CommandName="Delete" ConfirmDialogType="RadWindow"
                                        ConfirmText="Are You Sure To Delete ?" ConfirmTitle="Delete" HeaderButtonType="None"
                                        HeaderText="Delete" Text="Delete" UniqueName="DeleteCommandColumn">
                                        <HeaderStyle HorizontalAlign="Center" Width="50px" />
                                        <ItemStyle HorizontalAlign="Center" />
                                    </telerik:GridButtonColumn>
                                    <telerik:GridDropDownColumn DataField="cavtActivityGroupID" HeaderText="Activity Group"
                                        UniqueName="cavtActivityGroupID" DataSourceID="sqldcActivityGroup" ListTextField="agText"
                                        ListValueField="agValue">
                                        <HeaderStyle HorizontalAlign="Center" Width="150px" />
                                        <ItemStyle HorizontalAlign="Left" />
                                    </telerik:GridDropDownColumn>
                                    <telerik:GridDropDownColumn DataField="cavtScheduleType" HeaderText="Schedule Type"
                                        UniqueName="cavtScheduleType" ListTextField="stText" ListValueField="stValue">
                                        <HeaderStyle HorizontalAlign="Center" Width="100px" />
                                        <ItemStyle HorizontalAlign="Left" />
                                    </telerik:GridDropDownColumn>
                                </Columns>
                            </MasterTableView>
                            <ClientSettings>
                                <Scrolling UseStaticHeaders="True" />
                            </ClientSettings>
                        </telerik:RadGrid>

protected void radGridActivity_ItemDataBound(object sender, GridItemEventArgs e)
   {
       /*Main Grid 1st One - Begin*/
       if ("ContractActivity".Equals(e.Item.OwnerTableView.Name))
       {
           if (e.Item is GridEditableItem && e.Item.IsInEditMode)
           {
               /*Begin Populating Combo In Edit Mode*/
               GridEditableItem edititemForCombo = (GridEditableItem)e.Item;
               GridEditManager editMan = edititemForCombo.EditManager;
               GridDropDownListColumnEditor editor = (GridDropDownListColumnEditor)(editMan.GetColumnEditor("cavtScheduleType"));
               RadComboBox radComboScheduleType = editor.ComboBoxControl;
               radComboScheduleType.DataSource = GetComboDataScheduleType();
               radComboScheduleType.DataTextField = "stText";
               radComboScheduleType.DataValueField = "stValue";
               if (!e.Item.OwnerTableView.IsItemInserted)
               {
                   DataRowView row = (DataRowView)e.Item.DataItem;
                   radComboScheduleType.SelectedValue = row["cavtScheduleType"].ToString();
               }
               radComboScheduleType.DataBind();
               /*End Populating Combo In Edit Mode*/
           }
           if (e.Item is GridDataItem && e.Item.IsDataBound && !(e.Item.IsInEditMode))
           {
               GridDataItem item = (GridDataItem)e.Item;
               DataRowView row = (DataRowView)e.Item.DataItem;
               if (row["cavtScheduleType"].ToString() == String.Empty)
                   item["cavtScheduleType"].Text = "";
               else
                   item["cavtScheduleType"].Text = row["cavtScheduleType"].ToString();
               if (row["cavtActivityGroupID"].ToString() == "0")
                   item["cavtActivityGroupID"].Text = "";
           }
       }
       /*Main Grid 1st One - End*/
   }

Problem is that When i clicked to expand DetailTableView(ContractActivityItem) The Text Displayed under the column name Schedule Type(its a combo in edit mode) became empty (its datasource is dataTable) but the Text under the column Activity Group(its also a combo) display as it is(no problem)(its datasource is sqlDatasource). How can i display the text of combo binded from code behind when in grid inside grid senario

[Princy]

Hello Shafees,

Try the following method to populate GridDropDownColumn .

C#:

protected void radGridActivity_ItemDataBound(object sender, GridItemEventArgs e)
    {
      if ("ContractActivity".Equals(e.Item.OwnerTableView.Name))
        {
            if (e.Item is GridEditFormItem && e.Item.IsInEditMode)
            {

                GridEditFormItem edititemForCombo = (GridEditFormItem)e.Item;
                GridEditManager editMan = edititemForCombo.EditManager;
                GridDropDownListColumnEditor editor = (GridDropDownListColumnEditor)(editMan.GetColumnEditor("cavtScheduleType"));
                RadComboBox radComboScheduleType = editor.ComboBoxControl;
                editor.DataSource = GetComboDataScheduleType();
                editor.DataTextField = "FirstName";
                editor.DataValueField = "EmployeeID";
                editor.DataBind();
            }
         }
    }

Also refer the following documentation for more information on this.
Customize/Configure GridDropDownColumn

Thanks,
Princy.

[Shafees]

Hi,

    I Tried the abow sample code , But no change to my problem. The Dynamic Combo columns Text disapear when i expand sub grid.

(item[

"cavtScheduleType"].Text = row["cavtScheduleType"].ToString(); )

 

 

[Tsvetina]

Hi Shafees,

Is there any other differences between the two RadComboBoxes apart from their datasource?  Could you check what would happen if you change the datasource of the second one to be identical to the first combo's datasource? Also, what is your HierarchyLoadMode? Does the the behavior of the problemmatic control change if you switch it?

Kind regards,
Tsvetina
the Telerik team