May be my previous question is not so specific so that I didn't get any answer.
I have made a gridview in my aspx page which shows result of students.
I have put calender extender in all columns in edit item template so that the user can change the date.
In the item template I put a label which shows dates from database.
In that gridview's row data bind event I have put code something like if there is some test in that month then only it will shows the date.
I used the command field to edit the date.
Now the problem is when I click the edit link it provides calender for all columns in spite of the pericular rows which have test.
Can any one suggest me how can i do this.