I am creating a dynamic table control with ASP.NET/C# and the table is being used to hold a form. I need to allow users to click on a button in a row and make a duplicate of that row right below the original. My page is also using AJAX and jQuery.
I have tried to use Table.Rows.AddAt(indexoforigrow+1, newrow) but I get an error that the index is out of the range of values. I figured maybe I wasn’t getting the original row’s index correctly so I just tossed in a 1 and still got the error.
I also noticed that when I press the button to execute the code, the table disappears. Any ideas on how to fix that?
I am thinking that if I am unable to get these issues fixed I will have to loop through the table and submit the data to a temp table, adding a new row where indicated. Then I would pull all of the data back out and display again.
EDIT
I moved on when I could not get this working and tried to setup my submit functions to loop through the data and submit it to a db and realized that I am experiencing the same issues when clicking the submit button as when I click the add row button. It appears that my issue is really with viewstates/postback.
I did some reading on this and from what I can tell the solution is to re-create the dynamic control on page load every time. But I am confused about how I can do this if I have no idea how many rows/cells I have and how is the information the user entered kept in the form? I have no way of saving the information to a DB or anything because as soon as submit is clicked it all disappears.
Just returning to this almost a year later because I faced a similar issue in my current project. I was doing a few things wrong my first time around. First, I did indeed need to recreate the controls every load, but I also had to create them earlier in the page cycle. I was trying to create them during page load, which is after the viewstate is loaded.
The controls need to be recreated with the same ID before viewstate is loaded. I went with page init and it worked fine.