ParameterInfo.Name Property

Definition

Namespace:

System.Reflection

Assembly:

System.Runtime.dll

Source:

ParameterInfo.cs

Gets the name of the parameter.

public:
 virtual property System::String ^ Name { System::String ^ get(); };

public virtual string? Name { get; }

member this.Name : string

Public Overridable ReadOnly Property Name As String

Property Value

String

The simple name of this parameter.

Examples

The following example shows how to get ParameterInfo objects for the parameters of a method, and then use the Name property to obtain the parameter names.

using namespace System;
using namespace System::Reflection;
using namespace System::Runtime::InteropServices;
public ref class parminfo
{
public:
   static void mymethod( int int1m, [Out]interior_ptr<String^> str2m, interior_ptr<String^> str3m )
   {
       *str2m = "in mymethod";
   }

};

int main()
{
   Console::WriteLine( "\nReflection.Parameterinfo" );
   
   //Get the ParameterInfo parameter of a function.
   //Get the type.
   Type^ Mytype = Type::GetType( "parminfo" );
   
   //Get and display the method.
   MethodBase^ Mymethodbase = Mytype->GetMethod( "mymethod" );
   Console::Write( "\nMymethodbase = {0}", Mymethodbase );
   
   //Get the ParameterInfo array.
   array<ParameterInfo^>^Myarray = Mymethodbase->GetParameters();
   
   //Get and display the name of each parameter.
   System::Collections::IEnumerator^ enum0 = Myarray->GetEnumerator();
   while ( enum0->MoveNext() )
   {
      ParameterInfo^ Myparam = safe_cast<ParameterInfo^>(enum0->Current);
      Console::Write( "\nFor parameter # {0}, the Name is - {1}", Myparam->Position, Myparam->Name );
   }

   return 0;
}

/*
This code produces the following output:

Reflection.ParameterInfo

Mymethodbase
= Void mymethod (Int32, System.String ByRef, System.String ByRef)
For parameter # 0, the Name is - int1m
For parameter # 1, the Name is - str2m
For parameter # 2, the Name is - str3m
*/

using System;
using System.Reflection;

class parminfo
{
    public static void mymethod (
       int int1m, out string str2m, ref string str3m)
    {
       str2m = "in mymethod";
    }

    public static int Main(string[] args)
    {
       Console.WriteLine("\nReflection.Parameterinfo");

       //Get the ParameterInfo parameter of a function.

       //Get the type.
       Type Mytype = Type.GetType("parminfo");

       //Get and display the method.
       MethodBase Mymethodbase = Mytype.GetMethod("mymethod");
       Console.Write("\nMymethodbase = " + Mymethodbase);

       //Get the ParameterInfo array.
       ParameterInfo[] Myarray = Mymethodbase.GetParameters();

       //Get and display the name of each parameter.
       foreach (ParameterInfo Myparam in Myarray)
       {
          Console.Write ("\nFor parameter # "   + Myparam.Position
             + ", the Name is - " +  Myparam.Name);
       }
       return 0;
    }
 }
 /*
 This code produces the following output:

 Reflection.ParameterInfo

 Mymethodbase
 = Void mymethod (int, System.String ByRef, System.String ByRef)
 For parameter # 0, the Name is - int1m
 For parameter # 1, the Name is - str2m
 For parameter # 2, the Name is - str3m
 */

Imports System.Reflection

Class parminfo
    
    Public Shared Sub mymethod(int1m As Integer, ByRef str2m As String, _
    ByRef str3m As String)
        str2m = "in mymethod"
    End Sub
       
    Public Shared Function Main() As Integer
        Console.WriteLine(ControlChars.CrLf + "Reflection.Parameterinfo")
        
        'Get the ParameterInfo parameter of a function.
        'Get the type.
        Dim Mytype As Type = Type.GetType("parminfo")
        
        'Get and display the method.
        Dim Mymethodbase As MethodBase = Mytype.GetMethod("mymethod")
        Console.Write(ControlChars.CrLf _
           + "Mymethodbase = " + Mymethodbase.ToString())
        
        'Get the ParameterInfo array.
        Dim Myarray As ParameterInfo() = Mymethodbase.GetParameters()
        
        'Get and display the name of each parameter.
        Dim Myparam As ParameterInfo
        For Each Myparam In  Myarray
            Console.Write(ControlChars.CrLf _
               + "For parameter # " + Myparam.Position.ToString() _
               + ", the Name is - " + Myparam.Name)
        Next Myparam
        Return 0
    End Function
End Class

' This code produces the following output:
'
' Reflection.ParameterInfo
'  
' Mymethodbase
' = Void mymethod (Int32, System.String ByRef, System.String ByRef)
' For parameter # 0, the Name is - int1m
' For parameter # 1, the Name is - str2m
' For parameter # 2, the Name is - str3m

Remarks

This property utilizes the protected NameImpl field, and depends on an optional metadata flag that might not be available in all compilers.

To get the ParameterInfo array, first get the method or the constructor and then call the MethodBase.GetParameters method.

Warning

If this ParameterInfo represents a return value (that is, if it was obtained by using the MethodInfo.ReturnParameter property), this property will be null.