Validate DropDownList in Grid

[Tomasz]

I add scripts jquery.validate.js and jquery.validate.unobtrusive.js for validate grid when i add or edit row.

First on create new record or edit i recibe this window.

next trying validate columns, with textbox is ok but how validate dropdownlist

[Tomasz]

The first problem is resolved, removing jquery.validate.unobtrusive.js error window disapear.

But How to validate DropdownList i dont know

<ej:Column DataType="number" Field="RoomTypeId" EditType="Dropdown" ForeignKeyField="value" ForeignKeyValue="text" DefaultValue="1">
<ValidationRule>
<ej:KeyValue Key="required" Value="true" />
</ValidationRule>
</ej:Column>

[Mani Sankar Durai]

HI Tomasz, 

Thanks for contacting Syncfusion support. 

We have analyzed your query and we are able to reproduce the reported issue. Since it is an already known issue and the fix for this issue will be available on the latest Syncfusion Essential studio version 15.3.0.26. So we suggest you to upgrade to the latest version 15.3.0.26 and the same can be available from the below link. 

Link: https://www.syncfusion.com/forums/131983/essential-studio-2017-volume-3-release-v15-3-0-26-is-available-for-download 

Please let us know if you need further assistance. 

Regards, 

Manisankar Durai.