Hi Kathryn, 

Sure, I'd be happy to help you!

We don't currently have our samples browser in C#, however if you have any particular sample or any questions, you can feel free to post them here, and we're normally pretty quick at getting you a snippet or even a sample to demonstrate what you're looking for. 

For a custom header, i just need a little information on how you're using the IGGridView. Are your using a IGGridViewDataSourceHelper? Or are you implementing your own IGGridViewDatSource?

For the IGGridViewDataSource, you would simply override the TitleForHeaderInColumn method.

public class MyDataSource :IGGridViewDataSource    
    {
        public override string TitleForHeaderInColumn (IGGridView gridView, int column)
        {
            if (column == 0)
                return "Column 1";

            return "Other Columns";
        }
    }

If you're using one of our IGGridViewDataSourceHelper classes, you would add your IGGridViewColumnDefinitions and specify the header text:

dsh = new IGGridViewDataSourceHelper ();
            IGGridViewColumnDefinition col = new IGGridViewColumnDefinition (@"firstName");
            col.HeaderText = @"First Name";
            dsh.ColumnDefinitions.Add (col);

If you need more guidance, just let me know!

Btw, if you're interested, i've posted a series of blog posts that are designed to help developers familiar with C# learn objective-c:

http://ko.infragistics.com/community/blogs/stevez/archive/2013/05/09/c-to-objective-c-the-ultimate-guide.aspx

If you plan on working on iOS for a bit, perhaps they'll be helpful.

-SteveZ