I am glad I was able to help you.

I was able to put a sample together for you, you can download it at this location: http://wordpress.rcntech.com/?p=18 Please let me know if this help you achieve what you're looking for. Giuliano

Absolutely, I am here to help. I will go ahead and look througout my code and if possible prepare a demo for you. It has been a while, so please bear with me. I'll get back to you ASAP. Giuliano   

It has been a while since I post this, but as far as I recall I was able to accomplish the task with some code I did on my own. I don't know if xceed supports a direct feature to accomplish this task in the current version. If needed I can look into my code archives. Please let me know. Thanks  

Where you able to address this issue? What OS and .NET Framework are you using?

Hi Jenny,  First of all thanks for you reply. If I use the following code, all columns visible positions get all messed up:foreach (Xceed.Wpf.DataGrid.Column gridColumn in grid.VisibleColumns){      gridColumn.VisiblePosition = ...

That's a bogus error, set your license in the SetLicense method (C:\Xceed Samples\Xceed DataGrid for WPF v3.2\CSharp\MasterDetail\XceedDeploymentLicense.cs) and you'll be able to run the sample.

Did you ever get this issue fixed?

For reference please also take a look at this thread:  http://xceed.com/CS/forums/ShowThread.aspx?PostID=20165#21235 

Correct MegaByte but that would only work for Full Trust deployments. The documentation (v3.2) shows two ways to accomplish this using the Persisting Settings as you mention. I have tried this code using the XMLSerializer and it doesn't work in Partial Trust deployments due to IO security exeptions:private void SaveSettings( object ...