LocalVariableInfo Class
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LocalVariableInfo Class


Discovers the attributes of a local variable and provides access to local variable metadata.

Namespace:   System.Reflection
Assembly:  mscorlib (in mscorlib.dll)


public class LocalVariableInfo


Initializes a new instance of the LocalVariableInfo class.


Gets a Boolean value that indicates whether the object referred to by the local variable is pinned in memory.


Gets the index of the local variable within the method body.


Gets the type of the local variable.


Determines whether the specified object is equal to the current object.(Inherited from Object.)


Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)


Serves as the default hash function. (Inherited from Object.)


Gets the Type of the current instance.(Inherited from Object.)


Creates a shallow copy of the current Object.(Inherited from Object.)


Returns a user-readable string that describes the local variable.(Overrides Object.ToString().)

To get a list of local variables in a method, use the MethodBody.LocalVariables property. Use the MethodBase.GetMethodBody method to obtain the MethodBody for a MethodInfo object.


Local variable names are not persisted in metadata. In Microsoft intermediate language (MSIL), local variables are accessed by their position in the local variable signature.

The following example defines a test method named MethodBodyExample, and displays its local variable information. The GetMethodBody method is used to obtain a MethodBody object for the test method. The LocalVariables property is then used to obtain a list of LocalVariableInfo objects and to display their types and index order.

This code example is part of a larger example provided for the MethodBody class.

using System;
using System.Reflection;

public class Example
    public static void Main()
        // Get method body information.
        MethodInfo mi = typeof(Example).GetMethod("MethodBodyExample");
        MethodBody mb = mi.GetMethodBody();
        Console.WriteLine("\r\nMethod: {0}", mi);

        // Display the general information included in the 
        // MethodBody object.
        Console.WriteLine("    Local variables are initialized: {0}", 
        Console.WriteLine("    Maximum number of items on the operand stack: {0}", 

// Display information about the local variables in the
// method body.
foreach (LocalVariableInfo lvi in mb.LocalVariables)
    Console.WriteLine("Local variable: {0}", lvi);

    // The Main method contains code to analyze this method, using
    // the properties and methods of the MethodBody class.
    public void MethodBodyExample(object arg)
        // Define some local variables. In addition to these variables,
        // the local variable list includes the variables scoped to 
        // the catch clauses.
        int var1 = 42;
        string var2 = "Forty-two";

            // Depending on the input value, throw an ArgumentException or 
            // an ArgumentNullException to test the Catch clauses.
            if (arg == null)
                throw new ArgumentNullException("The argument cannot be null.");
            if (arg.GetType() == typeof(string))
                throw new ArgumentException("The argument cannot be a string.");

        // There is no Filter clause in this code example. See the Visual 
        // Basic code for an example of a Filter clause.

        // This catch clause handles the ArgumentException class, and
        // any other class derived from Exception.
        catch(Exception ex)
            Console.WriteLine("Ordinary exception-handling clause caught: {0}", 
            var1 = 3033;
            var2 = "Another string.";

// This code example produces output similar to the following:
//Method: Void MethodBodyExample(System.Object)
//    Local variables are initialized: True
//    Maximum number of items on the operand stack: 2
//Local variable: System.Int32 (0)
//Local variable: System.String (1)
//Local variable: System.Exception (2)
//Local variable: System.Boolean (3)

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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