How can you clone a WPF object?


Question

Anybody have a good example how to deep clone a WPF object, preserving databindings?


The marked answer is the first part.

The second part is that you have to create an ExpressionConverter and inject it into the serialization process. Details for this are here:
http://www.codeproject.com/KB/WPF/xamlwriterandbinding.aspx?fid=1428301&df=90&mpp=25&noise=3&sort=Position&view=Quick&select=2801571

1
37
1/12/2019 5:53:18 PM

Accepted Answer

The simplest way that I've done it is to use a XamlWriter to save the WPF object as a string. The Save method will serialize the object and all of its children in the logical tree. Now you can create a new object and load it with a XamlReader.

ex: Write the object to xaml (let's say the object was a Grid control):

string gridXaml = XamlWriter.Save(myGrid);

Load it into a new object:

StringReader stringReader = new StringReader(gridXaml);
XmlReader xmlReader = XmlReader.Create(stringReader);
Grid newGrid = (Grid)XamlReader.Load(xmlReader);
60
8/28/2008 6:38:06 PM

In .NET 4.0, the new xaml serialization stack makes this MUCH easier.

var sb = new StringBuilder();
var writer = XmlWriter.Create(sb, new XmlWriterSettings
{
    Indent = true,
    ConformanceLevel = ConformanceLevel.Fragment,
    OmitXmlDeclaration = true,
    NamespaceHandling = NamespaceHandling.OmitDuplicates, 
});
var mgr = new XamlDesignerSerializationManager(writer);

// HERE BE MAGIC!!!
mgr.XamlWriterMode = XamlWriterMode.Expression;
// THERE WERE MAGIC!!!

System.Windows.Markup.XamlWriter.Save(this, mgr);
return sb.ToString();

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