Hi everybody!
I wanna to create custom edit list item in sharepoint designer. I want to get a querystring parameter value and set it to an field of list item and then user click ok (confirm it).
I do the following procedure for list new item form and it works but in list edit item I get the following error:
- Open the site in SPD 2007.
- I create new aspx page to site
- Insert a Custom List Form to page.
- When I add a querystring parameter to dataview I got the following error:

as a point when I delete the parameter the error did not gone, so I think the parameter itself is not the cause of problem.
In new item list form I add parameter successfully and set my textbox value to this parameter and it works.
Any idea???
Any solution???