CodeDelegate2.InfoLocation Property
Gets the capabilities of the code model for the delegate.
Namespace: EnvDTE80
Assembly: EnvDTE80 (in EnvDTE80.dll)
Syntax
'Declaration
ReadOnly Property InfoLocation As vsCMInfoLocation
vsCMInfoLocation InfoLocation { get; }
property vsCMInfoLocation InfoLocation {
vsCMInfoLocation get ();
}
abstract InfoLocation : vsCMInfoLocation
function get InfoLocation () : vsCMInfoLocation
Property Value
Type: EnvDTE.vsCMInfoLocation
A vsCMInfoLocation constant value.
Implements
Remarks
If InfoLocation returns vsCMInfoLocationProject, then you can set properties, obtain a StartPoint, and obtain an EndPoint. When you go from one code model object (A) to another (B) — such as from a function to its type or from a class to its base class — B may be of type vsCMInfoLocationExternal if its definition is in another project. The disposition depends on the code model implementation, whether object B's project is implemented in the same language as object A's.
If InfoLocation returns vsCMInfoLocationExternal, then information is available only from metadata, inspecting a DLL, or from frozen sources. You may be able to obtain a StartPoint and EditPoint2, but you cannot edit the document; that is, you cannot set properties or modify the text behind the code element.
If InfoLocation returns vsCMInfoLocationNone, then all that is available is a code model object that has a name. Also, based on the context of the source code, in some cases you can tell whether the name should be a class or an interface. In this situation, however, because the code model could not resolve the name to any useful information, the object is otherwise useless.
Note
The values of code model elements such as classes, structs, functions, attributes, delegates, and so forth can be non-deterministic after making certain kinds of edits, meaning that their values cannot be relied upon to always remain the same. For more information, see the section Code Model Element Values Can Change in Discovering Code by Using the Code Model (Visual Basic).
Examples
Before running this example, load a project with a class and insert the following line along with the example code. After both the line and the example code are added, click the Delegate line to place the insertion point there, and then run the example.
[VisualBasic]
Delegate Sub MySubDelegate(ByVal x As Integer)
[C#]
public delegate void MySubDelegate(int x);
[VisualBasic]
Public Sub CodeDelegateExample(ByVal dte As DTE2)
' Before running this example, open a code document from a
' project and place the insertion point inside a class
' definition.
Try
' Retrieve the CodeClass at the insertion point.
Dim sel As TextSelection = _
CType(DTE.ActiveDocument.Selection, TextSelection)
Dim del As CodeDelegate2 = _
CType(sel.ActivePoint.CodeElement( _
vsCMElement.vsCMElementDelegate), CodeDelegate2)
Dim elem As CodeElement2
Dim sb As New System.Text.StringBuilder
' Display the baseclass name of the delegate.
sb.AppendLine("Delegate base class name: " & _
del.BaseClass.Name)
sb.AppendLine("Delegate's access: " & del.Access.ToString)
sb.AppendLine("Children: " & del.Children.Count & " _
Name: " & del.Children.Item(1).Name)
sb.AppendLine("Collection: " & del.Collection.Count)
sb.AppendLine("Delegates:")
For Each elem In del.Collection
sb.AppendLine(" - " & elem.Name)
Next
sb.AppendLine("Comment: " & del.Comment)
sb.AppendLine("Doc Comment: " & del.DocComment)
sb.AppendLine("DTE Parent: " & del.DTE.Name)
sb.AppendLine("Endpoint location: " & _
del.EndPoint.AbsoluteCharOffset)
sb.AppendLine("Infolocation: " & del.InfoLocation.ToString)
sb.AppendLine("Can provide CodeType object? " & _
del.IsCodeType.ToString)
sb.AppendLine("Is Delegate derived? " & _
del.IsDerivedFrom("EnvDTE80"))
sb.AppendLine("Is Delegate a generic? " & del.IsGeneric)
sb.AppendLine("Kind: " & del.Kind.ToString)
sb.AppendLine("Authoring language: " & _
del.Language.ToString)
sb.AppendLine("Name: " & del.Name)
sb.AppendLine("Namespace: " + del.Namespace.Name);
sb.AppendLine("Parameters: " & del.Parameters.Item(1).Name)
sb.AppendLine("Project containing the delegate: " & _
del.ProjectItem.Name)
sb.AppendLine("Prototype for delegate: " & del.Prototype)
sb.AppendLine("Delegate start point offset: " & _
del.StartPoint.LineCharOffset)
sb.AppendLine("Type: " & del.Type.TypeKind.ToString)
MsgBox(sb.ToString)
Catch ex As System.Exception
MsgBox(ex.ToString)
End Try
End Sub
[C#]
public void CodeDelegateExample(DTE2 DTE)
{
try
{
// Retrieve the CodeClass at the insertion point.
TextSelection sel = (TextSelection)
DTE.ActiveDocument.Selection;
CodeDelegate2 del = (CodeDelegate2)
sel.ActivePoint.get_CodeElement
(vsCMElement.vsCMElementDelegate);
System.Text.StringBuilder sb = new System.Text.StringBuilder();
// Display the baseclass name of the delegate.
sb.AppendLine("Delegate base class name: " +
del.BaseClass.Name);
sb.AppendLine("Delegate's access: " + del.Access);
sb.AppendLine("Children: "+del.Children.Count+" Name:
"+del.Children.Item(1).Name);
sb.AppendLine("Collection: "+del.Collection.Count);
sb.AppendLine("Delegates:");
foreach (CodeElement2 elem in del.Collection )
{
sb.AppendLine(" - "+elem.Name);
}
sb.AppendLine("Comment: "+del.Comment);
sb.AppendLine("Attributes:");
foreach (CodeElement2 elem in del.Attributes)
{
sb.AppendLine(" - " + elem.Name);
}
sb.AppendLine("Bases:");
foreach (CodeElement2 elem in del.Bases)
{
sb.AppendLine(" - " + elem.Name);
}
sb.AppendLine("Doc Comment: " + del.DocComment);
sb.AppendLine("DTE Parent: "+del.DTE.Name);
sb.AppendLine("Endpoint location:
"+del.EndPoint.AbsoluteCharOffset);
sb.AppendLine("Infolocation: "+del.InfoLocation);
sb.AppendLine("Can provide CodeType object? "+del.IsCodeType);
sb.AppendLine("Is Delegate derived?
"+del.get_IsDerivedFrom("EnvDTE80"));
sb.AppendLine("Is Delegate a generic? "+del.IsGeneric);
sb.AppendLine("Kind: "+del.Kind);
sb.AppendLine("Authoring language: "+del.Language);
sb.AppendLine("Name: "+del.Name);
sb.AppendLine("Parameters: "+del.Parameters.Item(1).Name);
sb.AppendLine("Namespace: " + del.Namespace.Name);
sb.AppendLine("Project containing the delegate:
"+del.ProjectItem.Name);
sb.AppendLine("Delegate start point offset:
"+del.StartPoint.LineCharOffset);
sb.AppendLine("Type: "+del.Type.TypeKind);
MessageBox.Show(sb.ToString());
}
catch(System.Exception ex)
{
MessageBox.Show(ex.Message);
}
}
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.
See Also
Reference
Other Resources
How to: Compile and Run the Automation Object Model Code Examples