How to do the client side validation for Checkbox?

[sharath]

Hello Admins,

I'm having a location grid user control. Each grid item contains check boxes. I can select the multiple check boxes  and delete all at once when i click on the link button which i have defined. Everything is working fine. But, if i don't select any of the checkboxes to delete or there is no data in the grid, how to do the client side validation for this scenario. Please help me in this regard.

And also whenever i select any check boxes, post back is happening. How to overcome this problem as well.

My checkbox code:
   <telerik:GridTemplateColumn UniqueName="CheckboxId"  HeaderText="View"  DataField="View" > 
                             <ItemTemplate> 
                                 <asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="true"/>  
                            </ItemTemplate> 
                          </telerik:GridTemplateColumn>

My checkbox code behind:

foreach (GridDataItem item in rgLocations.MasterTableView.Items)
                {
                    
                    chk = (CheckBox)item.FindControl("CheckBox1");
                    if (!chk.Checked)
                    {
                        DataRow newRowAdd = myDataTable.NewRow();
                        newRowAdd["Id"] = item["Id"].Text;
                        newRowAdd["Name"] = item["Name"].Text;
                        newRowAdd["CTID"] = item["CTID"].Text;
                        myDataTable.Rows.Add(newRowAdd);
                        myDataTable.AcceptChanges();
                    }
                }
                rgLocations.DataSource = myDataTable.DefaultView;
                rgLocations.Rebind();

My link button code:
<asp:LinkButton ID="lnkDeleteLoc" runat="server" OnClick="lnkDeleteLoc_Click">Delete the Location(s)</asp:LinkButton>

[Eyup]

Hi Sharath,

I've created a sample RadGrid web site to demonstrate how you can achieve the requested functionality. Please run the attached application and let me know if it helps you.

Regards,
Eyup
Telerik

 

 

[sharath]

Thanks a lot for answering for my query. Is it possible to display something saying users that "You have not slected any checkbox to delete" when no check boxes has been selected and "There is no location added to the grid" when user tried to delete empty grid in the Java script itself instead of returning true or false. 

Regards,
Sharath

[sharath]

Hello Eyup, could you please shed some idea for me. I'm getting JS error in browser saying that "grid.get_masterTableView().get_dataItems()" is null when i try to press delete when the grid is empty. How to overcome this problem.

[Eyup]

Hi Sharath,

I will check the mentioned scenario and let you know when ready.

Thank you for your patience in advance.

Regards,
Eyup
Telerik

 

 

[Eyup]

Hello Sharath,

Thank you again for your patience.

I'm sending the modified version of the sample with the requested implementation.

Hope this helps.

Regards,
Eyup
Telerik