Adding new rows to data grid disappear with filters

Hello, Mark,

Your question has already been answered in the support ticket you have opened on the same topic. However, I am posting the answer here as well in order the community to benefit from it:

When filtering is applied and the user modifies a certain cell value from the filtered column, this automatically may hide the edited row according to the filter criterion. 

Please have in mind that adding a FilterDescriptor to RadGridView doesn't perform a one time filtering operation. While the FilterDescriptor is present in the grid, it is responsible to keep the rows visible or not according to the filtering condition. Even newly added rows will be hidden if they don't meet the filter requirements. They won't be displayed until the filter is cleared. 

The possible solution for hiding/showing the rows to any certain logic that is different than the default behavior described above is to use the custom filtering functionality that RadGridView offers. Thus, you can implement any rows filtering  logic that fits your needs. A sample approach is demonstrated in the following help article: Custom Filtering.

Off topic, we kindly ask you to use just one thread for a specific problem to contact us. Posting the same questions numerous times slows down our response time because we will need to review and address two or more tickets instead of one. Moreover, threads are handled according to license and time of posting, so if it is an urgent problem, we suggest you use a support ticket, which would be handled before a forum thread.

Thank you for your understanding.

Regards,
Dess | Tech Support Engineer, Principal
Progress Telerik