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MethodBase.GetParameters Method

July 28, 2014

When overridden in a derived class, gets the parameters of this method or constructor.

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

public abstract ParameterInfo[] GetParameters()

Return Value

Type: System.Reflection.ParameterInfo []
An array that contains the parameters of this method or constructor.

ExceptionCondition
MethodAccessException

This member is invoked late-bound through mechanisms such as Type.InvokeMember.

The following example uses the GetParameters method to retrieve the parameters of the Invoke method of a delegate.

The example defines a delegate named MyDelegate and an event named ev of type MyDelegate. The code in the Main method discovers the event signature by getting the delegate type of the event, getting the Invoke method of the delegate type, and then retrieving and displaying the parameters.


using System;
using System.Reflection;

public delegate void MyDelegate(int i, ref string s);

public class Example
{
    public event MyDelegate MyEvent;

    public static void Demo(System.Windows.Controls.TextBlock outputBlock)
    {
        Type delegateType = typeof(Example).GetEvent("MyEvent").EventHandlerType;

        // The Invoke method of a delegate type always has the same signature
        // as the delegate.
        MethodInfo invoke = delegateType.GetMethod("Invoke");

        foreach( ParameterInfo p in invoke.GetParameters() )
        {
            outputBlock.Text += p.ParameterType.ToString() + "\n";
        }
    }
}

/* This example produces the following output:

System.Int32
System.String&
 */


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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