'宣言 Public MustInherit Class C1DocumentSourceContext
'使用法 Dim instance As C1DocumentSourceContext
public abstract class C1DocumentSourceContext
'宣言 Public MustInherit Class C1DocumentSourceContext
'使用法 Dim instance As C1DocumentSourceContext
public abstract class C1DocumentSourceContext
System.Object
C1.WPF.Document.C1DocumentSourceContext