Finding RadComboBox CheckBoxes Controls in RadGrid

[Muhammad]

 

i am using RadGrid BatchEdit, which is using combobox where CheckBoxes="true".  i can't acess checkbox values in server side.

 

telerik:GridTemplateColumn UniqueName="AmountAttributeCategory" HeaderText="Tax"  >
                        <ItemTemplate>
                            <asp:Label runat="server"><%#DataBinder.Eval(Container.DataItem, "TaxesName")%></asp:Label>
                        </ItemTemplate>
                        <EditItemTemplate>

                           <telerik:RadComboBox   runat="server" ID="RadComboBoxAttribute"  CheckBoxes="true"  AllowCustomText="true"  CheckedItemsTexts="DisplayAllInInput"
                                 OnItemsRequested="RadComboBoxAttribute_ItemsRequested"     
                                EnableLoadOnDemand="true"  DataValueField="TaxesID" DataTextField="Text"   
 >
                             <ItemTemplate>
                                    <table>
                                        <tr>
                                            <td style="width:100px;text-align:left;"><%# DataBinder.Eval(Container, "Text")%></td>
                                             <td style="width:100px;text-align:left;"><%# DataBinder.Eval(Container, "Attributes['Amount']")%></td>  
                                      
                                        </tr>
                                    </table>
                            </ItemTemplate>
                            </telerik:RadComboBox>
                        </EditItemTemplate>
                    </telerik:GridTemplateColumn>

 

        protected void RadGrid1_BatchEditCommand(object sender, Telerik.Web.UI.GridBatchEditingEventArgs e)
        {

           foreach (GridBatchEditingCommand command in e.Commands)
            {

                        Hashtable oldValues = command.OldValues;
                Hashtable newValues = command.NewValues;

                 //                 GridTemplateColumn file = (GridTemplateColumn)newValues["AmountAttributeCategory"];

               // RadComboBox ddlDesc = RadGrid1.FindControl(RadGrid1.MasterTableView.ClientID + "_AmountAttributeCategory").FindControl("RadComboBoxAttribute") as RadComboBox;

}}

 

how to get checkbox values which is binded in combobox RadGrid GridTemplateColumn ?

 

 

[Attila Antal]

Hi Muhammad,

BatchEditing is a client-side functionality of the RadGrid and therefore there is a limitation to accessing controls on server-side. You will need to use the PreRender event of the Grid, that is the only event you can get a reference to the objects, see Accessing Controls in Batch Edit Mode

I would also suggest reviewing the following article that describes a few important aspects of the Batch Editing you may need to know, see RadGrid Batch Editing Templates and Specifics.

Regards,
Attila Antal
Progress Telerik

[Muhammad]

Thanks for reply.

Very clear, I want to save all batch records along with GridTemplateColumn Combobox checkboxs values. 

I only have this event RadGrid1_BatchEditCommand option to save my all records. 

 

You have mentioned reference link. Following PreRender event is executed before BatchEditCommand and there is no users data.

protected void RadGrid1_PreRender(object sender, EventArgs e)

{

RadComboBox combo = ((sender as RadGrid).MasterTableView.GetBatchEditorContainer("CategoryID").FindControl("rcbCategory") as RadComboBox); combo.EnableLoadOnDemand = true;

}

[Attila Antal]

Hi Muhammad,

Accessing the data must be done in the BatchEditCommand event. You can find instructions in the Batch Editing Server-side API article.

The PreRender event, where you access the control is only used to Bind data or make changes to the Control that will be available later in Edit mode.

In Batch editing, most of the operation is done on the client-side, but when the user clicks on the save button, all changes will be submitted to the server and that is when the BatchEditCommand kicks in. That is the only event the data will be available on the server.

Regards,
Attila Antal
Progress Telerik

[Muhammad]

Thanks for reply.

i have used custom logic to save combobox checkboxes values in database.

how can i retrieve back in itemtemplate these combbox checkboxes multiple values.

[Attila Antal]

Hi Muhammad,

I have shared a few articles earlier in this Thread. There is one link that will explain how you can access the ComboBox inside the BatchEdit mode. You can then set bind those values back to it if you wish.

Regards,
Attila Antal
Progress Telerik