ProvideLanguageServiceAttribute::DebuggerLanguageExpressionEvaluator Property

Visual Studio 2015
 

Determines the expression evaluator that is used for evaluating expressions.

Namespace:   Microsoft.VisualStudio.Shell
Assembly:  Microsoft.VisualStudio.Shell.14.0 (in Microsoft.VisualStudio.Shell.14.0.dll)

C#
C++
F#
VB
Copy 
public:
property String^ DebuggerLanguageExpressionEvaluator {
	String^ get();
	void set(String^ value);
}

Property Value

Type: System::String^

Returns a string containing the GUID of an expression evaluator; otherwise, returns a null value.

A language service can interact with a debugger when a program is being debugged. Visual Studio can be told about which expression evaluator to use with a particular language service to avoid having to load a full debug engine.

This property is available to any language service implementation.

The default is a null value, indicating no associated expression evaluator is available.

The registry entry looks like this:

Copy 
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\[X.Y]\Languages\Language Services\
  [Language Name]\
    Debugger Languages\
      [Expression Evaluator GUID] = reg_sz: [language name]

C#
Copy 
[ProvideLanguageService(typeof(MyLanguageService),           // Required
                        MyConstants.languageName,            // Required
                        MyConstants.languageNameResourceID,  // Required
    // Optional language service properties
    DebuggerLanguageExpressionEvaluator = "{45345223-cecd-48e7-a866-45cad2e8b169}",
                       )]
Return to top
Show: