When I am doing data binding on RadScheduler(using SchedulerBindingDataSource), I meet 'System.Data.NoNullAllowedException, Column 'id' does not allow null'
My steps are:
1) Double-Click on the scheduler to create a new time slot, and custom appointment dialog show up.
2) type the info, then click ok button
3) error shows....
4) After clicking ok button, the appointment slot will show on schedule, then click the Save button, data will be saved to the database
However, The data populating is good. I can receive data from the database, when I run the application the data which I manually type into the database is exist on schedule. And if I click on exist appointment slot and do some changes, there is no error. After I click save button The data will be successfully saved into the database.
Could you let me know which part will be the issue, All screenshots are attached.
If need more information, plz let me know,