Last post Jan 30, 2017 06:50 AM by Eric Du
Jan 28, 2017 10:58 PM|JAYHAWKER|LINK
Unhandled exception at line 6, column 16485 in http://localhost:15500/Scripts/WebForms/MsAjax/MicrosoftAjaxWebForms.js
Jan 30, 2017 06:40 AM|oned_gk|LINK
Ensure you have SqlDataSourceRentRoll UpadateCommand
Jan 30, 2017 06:50 AM|Eric Du|LINK
According to this error message, as far as I know, this error is may be caused by lack update command or update event have error.
So I hope you could post the complete code for us to check!
Here are someone who meet the same problem as you, please refer to this solution:
Why the data cannot be updated in this GridView: