>>>Hi,
>>>I looking for control which display the XML formatted string as Visual Studio Environment displays this or Internet Explorer..with possiblity collapse and expand xml nodes..
>>>Absolutely my dream to find a control as Visual Studio XML Editor.. its a simple text editor with tag autocomplete, diffrent colors for xml nodes and values, and possibility to modify text.
>>>
>>>Is there some way to use Visual Studio Editor for this inside application? or maybe exist components which do the same as Visual Studio does.
>>>

Take a look at Actipro:

http://www.actiprosoftware.com/products/dotnet/windowsforms/syntaxeditor/addons/web/Default.aspx