Thank you for writing.
Thanks to the sample project I was able to quickly reproduce and identify the cause for the issue. In our latest version we involved the column's DateTypeConverter
in the sorting process. This gives developers another means to control the sorting process. The issue here is that our RadGridDateTimeConverter
doesn't know how to convert null to a valid DateTime
object. I have logged this issue in our feedback portal. You can track its progress, subscribe for status change alerts and add your vote/comment to it on the following link - Feedback item.
To workaround the issue you can create a custom type converter and assign it to the date time column. Here is a code snippet that demonstrate s this. I have also attached a modified version of your sample which includes these changes.
CustomRadGridDateTimeConverter : RadGridDateTimeConverter
ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture,
value, Type destinationType)
(DateTime) && value ==
.ConvertTo(context, culture, value, destinationType);
I have updated your Telerik Points
for bringing this issue to our attention.
I hope this will help. Should you have further questions, I would be glad to assist.
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