CodeClass.InfoLocation Property

Gets the capabilities of the code model.

Namespace:  EnvDTE
Assembly:  EnvDTE (in EnvDTE.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.

Remarks

If InfoLocation returns vsCMInfoLocationProject, then you can set properties, obtain a StartPoint, obtain a EndPoint, and so forth. 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, and so forth.

If InfoLocation returns vsCMInfoLocationExternal, then information is available only from metadata, from inspecting a DLL, or from frozen sources. You may be able to obtain a StartPoint and EditPoint, 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

 Sub InfoLocationExample(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 cls As CodeClass = _
            CType(sel.ActivePoint.CodeElement( _
            vsCMElement.vsCMElementClass), CodeClass)

        ' Display the class's location.
        MsgBox(cls.Name & "'s InfoLocation value is " & _
            cls.InfoLocation.ToString())

        Dim cm As CodeModel = _
            cls.ProjectItem.ContainingProject.CodeModel
        Dim name As String = ConvertFullName(cm, "System.Object")
        Dim obj As CodeType = cm.CodeTypeFromFullName(name)

        ' Display System.Object's location.
        MsgBox(obj.FullName & "'s InfoLocation value is " & _
            obj.InfoLocation.ToString())
    Catch ex As Exception
        MsgBox(ex.Message)
    End Try

End Sub

Function ConvertFullName(ByVal cm As CodeModel, _
    ByVal fullName As String) As String

    ' Convert a .NET type name into a C++ type name.
    If (cm.Language = CodeModelLanguageConstants.vsCMLanguageVC) Or _
        (cm.Language = CodeModelLanguageConstants.vsCMLanguageMC) Then
        Return fullName.Replace(".", "::")
    Else
        Return fullName
    End If

End Function

public void InfoLocationExample(DTE2 dte)
{
    // 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.
        TextSelection sel = 
            (TextSelection)dte.ActiveDocument.Selection;
        CodeClass cls = 
            (CodeClass)sel.ActivePoint.get_CodeElement(
            vsCMElement.vsCMElementClass);

        // Display the class's location.
        MessageBox.Show(cls.Name + "'s InfoLocation value is " + 
            cls.InfoLocation.ToString());

        CodeModel cm = cls.ProjectItem.ContainingProject.CodeModel;
        string name = ConvertFullName(cm, "System.Object");
        CodeType obj = cm.CodeTypeFromFullName(name);

        // Display System.Object's location.
        MessageBox.Show(obj.FullName + "'s InfoLocation value is " + 
            obj.InfoLocation.ToString());
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

string ConvertFullName(CodeModel cm, string fullName)
{
    // Convert a .NET type name into a C++ type name.
    if ((cm.Language == CodeModelLanguageConstants.vsCMLanguageVC) || 
        (cm.Language == CodeModelLanguageConstants.vsCMLanguageMC))
        return fullName.Replace(".", "::");
    else
        return fullName;
}

.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

CodeClass Interface

EnvDTE Namespace

Other Resources

How to: Compile and Run the Automation Object Model Code Examples

Discovering Code by Using the Code Model (Visual Basic)

Discovering Code by Using the Code Model (Visual C#)