hi , thanks for a prompt reply. I am editing a DataTable ,In that datatable I am having one datacolumn of datatype Datetime .so when I am setting the value DBNull.Value it's throwing null exception. I have tried with setnull method of datarow also but that method is not accessible. can you please help me out ?

I ran into this same "issue", and I ended up just storing the Date as a string in the XML and then converting it back into a Date/Time when I read the data back in ... There's probably a more "direct" approach to take, but this works just fine. D.

thanks a lot. now it is working fine.Only thing is that when ever I am trying to use the back button of browser it is showing the alert message .which I don't want. what I think is while using the back button we are reloading the page so the alert message is coming. can you suggest something to help me out? thanks.

Hi, I have solved my problem. Actually if I am passing null values in dataset xml is not creating the xml element. so instead of passing null I passed null string(""). After that it worked for me. thanks