On click of image button in the GridView, I need to display Ajax popup window(which contains one textbox and one Add button) which allows the user to enter some comments in TextBox. Once the user clicks on Add button in Ajax popup, it should get closed and user entered data should be stored in HiddenField within the GridView.
I am not able to get the HiddenField object within the GridView.
Can anyone help me out in this.
Thanks in advance