Hello Simon,

The issue has been discussed in this forum post:

https://www.infragistics.com/community/forums/f/ultimate-ui-for-windows-forms/124253/net6-ultragrid-missing-methods-loadfromxml-and-saveasxml/545405#545405

To sum it up, the reason why the LoadFromXML and SaveAsXml methods are not present is that they both are using the SoapFormatter class extensively, which is only supported in .NET Framework. The workaround that has been suggested is to use the Save and Load methods, which generate and load binary file. If you have an XML file that needs to be loaded, it is recommended that you first load it in a .NET Framework application and then re-save it using the Save method.

In the below documentation page there is an example of how the Save/Load methods could be used:

https://www.infragistics.com/help/winforms/infragistics.win.ultrawingrid~infragistics.win.ultrawingrid.ultragridlayout~save(stream,propertycategories)

Regards,
Ivan Kitanov

If you are looking for the Save/LoadFromXML methods to return, I would recommend suggesting a product idea for this functionality at our Ideas Site for Windows Forms. This will place you in direct communication with our product management teams who plan and prioritize upcoming features and development based on community and user feedback.

Regards,
Ivan Kitanov

Hi Simon,

since I had the same problem as you have, I needed to find a solution for the problem.

Happily I succeeded.

The following code is written in .Net6 using the SoapFormatter Nugget Version 1.1.9

		private void convertUltraGridLayoutFromXmlToBinary(string xmlFilename, string binaryFilename)
		{
			UltraGridLayout layout;
			#region load the UltraGrid from XML
			FileStream fileStream = new FileStream(xmlFilename, FileMode.Open, FileAccess.Read);
			try
			{
				SoapFormatter soapFormatter = new SoapFormatter(null, new StreamingContext(StreamingContextStates.Persistence))
				{
					AssemblyFormat = FormatterAssemblyStyle.Simple,
					Binder = new Infragistics.Win.UltraWinGrid.Serialization.Binder()
				};
				layout = soapFormatter.Deserialize(fileStream) as UltraGridLayout;
			}
			finally
			{
				fileStream.Close();
			}
			#endregion

			#region save the UltraGrid to binary
			fileStream = new FileStream(binaryFilename, FileMode.OpenOrCreate, FileAccess.Write);
			try
			{
				BinaryFormatter binaryFormatter = new BinaryFormatter(null, new StreamingContext(StreamingContextStates.Persistence))
				{
					AssemblyFormat = FormatterAssemblyStyle.Simple
				};
				if (layout != null)
				{
#pragma warning disable SYSLIB0011
					binaryFormatter.Serialize(fileStream, layout);
#pragma warning restore SYSLIB0011
				}
			}
			finally
			{
				fileStream.Close();
			}
			#endregion
		}

Just execute this method before you do DisplayLayout.Load(...), which was LoadFromXML(...) before.

Hope that helps you, too.