I use GridView1_RowCreated1 to change font and backcolor for some fields upon certain conditions for the gridView.  It works fine when the gridView is loaded first time.  I rebind the gridview every time when the page is loaded.

I also have a table above the gridView with a submit button and serveral input fields which are passed to the gridView as its sqldatasource parameters served as filters for the list of gridView data.  When the page is loaded first time, the gridview is not loaded.  When the submit button is clicked, the gridView is loaded.  This works fine too.

However, after the griveView is loaded, I can neither sort the gridview nor submit again with same or different input values as filters.  The sorting and filters worked fine before I added the gridView1_RowCreated1 sub.

The error message I got is:

Object reference not set to an instance of an object.

Could you post your code shortly. Maybe the problem comes with the line page.ispostback which is very often the problem.

Public Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

GridView1.DataSourceID = ""

Else

GridView1.DataSourceID = "myDataSource"

End If

End Sub

Maybe your problem comes with the page lifecycle because page.load is called in front of the rowcreated method. So maybe you lose your datas because of you page.load method and the new connection with the dataset

ArminStockner,

i hope you read my question carefully.  i said what the problem is.  i need the solution to fix it.  sorry your posts are not helping.

can anybody please help?

I saw hundreds of people viewed the post.  Can anybody help? Or recommend a link?

Hi,

Why you are put gridview binding source in page load event.

Just make a function where gridview is assing to data source and bind and call it from submit button.

without gridview.bind() in page_load, i cannot get returned records number, which is assigned to a label on the page.

even if i call bind() from submit button and suppose it may fix the current problem for re-submit, how are you going to address the issue from sorting the gridview?

thanks for your input.

i tried on_click for the submit button and it didn't work.  still every thing works fine when the gridview is first time loaded and it causes the same error message when i resubmit or sort the gridview.

guess this is really tough question so that nobody knows how to fix.  i'm determined to find the solution.  i'll let you know how it goes.

 Can you post the code?

So that i can try over here and get some idea about solution. 

problem solved by changing the line:

If e.Row.RowType = DataControlRowType.DataRow Then

to