Validation for DropDownList if ForeignKeyField is null

[Yukiko Imazu]

Hello,

I'm working on ej:dropdownlist.  I implemented dropdownlist in grid and added validation.

My requirement is when ForeignKeyField is null or nothing, I want show validation message same as when it is not selected anything in dropdown.  Can I do this for ej:dropdownlist.

I attach sample solution.  If I selected N/A in dropdownlist, I want error popup shows on the dropdownlist in the grid.

Best Regards,

Yukiko

Attachment: test_c56b8bf2.7z

[Vignesh Natarajan]

Hi Yukiko, 

Thanks for using Syncfusion products. 

From your query, we understand that you want to display the validation message when value selected from dropdownlist equals “N/A”. We have achieved your requirement using Custom Validation jQuery method. 

Refer the below code example 

<ej:Grid ID="Grid1" runat="server" AllowPaging="True"  DataSourceID="test34" ClientIDMode="AutoID" DataKeyNames="memberId" >  

.                .               .               .                .               

            <ej:Column Field="HomePortCode" HeaderText=" Home Port Code" Width="190px" EditType="Dropdown" TextAlign="Left"> 

                   <ValidationRule> 

                        <ej:KeyValue Key="customRegex" Value="5" /> 

                    </ValidationRule> 

            </ej:Column> 

 

.                       .                .               .             .  

                </Command> 

            </ej:Column> 

        </Columns> 

</ej:Grid> 

<script type="text/javascript"> 

        $(function () {            

            $.validator.addMethod("customRegex", function (value, element, params) { 

                if (element.value != "N/A" && element.value != "") 

                    return true; 

                return false; 

            }, "Select a valid value"); 

        }); 

         

    </script> 

    

Refer the below screenshot for the output 

 

For your convenience we have attached the modified which can be downloaded from below link 

Sample: http://www.syncfusion.com/downloads/support/forum/138946/7z/test1887875353  

Refer our help documentation for your reference 

https://help.syncfusion.com/aspnet/grid/editing#custom-validation  

Please get back to us if you have further queries. 

Regards, 

Vignesh Natarajan 

[Yukiko Imazu]

Hi Vignesh,

Thank you for you support.

Issue is solved.

Best Regards,

Yukiko

[Vignesh Natarajan]

Hi Yukiko, 

Thanks for the update. 

We are happy to hear that your query has been resolved by our solution. 

Please get back to us if you have further queries. 

Regards, 

Vignesh Natarajan