Chapter 14 - Error inserting

vbboyd · March 10th, 2013, 04:53 PM

Quote:

Originally Posted by Imar

Ah there we have it. Here's how you're passing the ID (without Id in the name):

Code:

Response.Redirect(string.Format("ManagePhotoAlbum.aspx?PhotoAlbum={0}", 
                     myPhotoAlbum.Id.ToString()));

and here's how you're reading it (with Id):

Code:

int photoAlbumId = Convert.ToInt32(Request.QueryString.Get("PhotoAlbumId"));

Since the two don't match, the code in the second block tries to a insert a Picture for a PhotoAlbum with an Id of zero which doesn't exist.

Cheers,

Imar

I am just a little bit confused here. How is it that the two don't match? Is this as a result of a typing error from the guy training on your book? Also would it not be possible for him to just throw your code that is downloadable from the Wrox Website into the code behind files and for that to fix the problem? If that is the case could you not just look at side by side comparison of your code and the code that he typed to see where the problems are lying?

Imar · March 10th, 2013, 05:15 PM

Quote:

How is it that the two don't match? Is this as a result of a typing error from the guy training on your book?

Indeed.

Quote:

Also would it not be possible for him to just throw your code that is downloadable from the Wrox Website into the code behind files and for that to fix the problem?

Indeed

Quote:

If that is the case could you not just look at side by side comparison of your code and the code that he typed to see where the problems are lying?

Indeed. But that doesn't mean you always spot the error.

Imar

usmaak · March 10th, 2013, 11:15 PM

Quote:

Originally Posted by Imar

Indeed.

Indeed

Indeed. But that doesn't mean you always spot the error.

Imar

Winmerge is really good for doing side-by-side comparisons as well. I use it all the time at work.

With it, I found that the following was missing from my EntityDataSource:

OnInserting="EntityDataSource1_Inserting"

That was causing some problems. I'm not sure why it wasn't there, but I did add it.