HttpSimpleClientProtocol.EndInvoke(IAsyncResult) Metode

Definisi

Ruang nama:
System.Web.Services.Protocols
Rakitan:
System.Web.Services.dll

Menyelesaikan pemanggilan asinkron metode layanan Web XML menggunakan HTTP.

protected:
 System::Object ^ EndInvoke(IAsyncResult ^ asyncResult);
protected object EndInvoke(IAsyncResult asyncResult);
member this.EndInvoke : IAsyncResult -> obj
Protected Function EndInvoke (asyncResult As IAsyncResult) As Object

Parameter

asyncResult
IAsyncResult

yang IAsyncResult dikembalikan dari BeginInvoke(String, String, Object[], AsyncCallback, Object) metode .

Mengembalikan

Object

Array objek yang berisi nilai pengembalian dan apa pun berdasarkan referensi atau out parameter untuk metode layanan Web XML.

Pengecualian

ArgumentException

asyncResult bukan nilai pengembalian dari BeginInvoke(String, String, Object[], AsyncCallback, Object) metode .

Contoh

Contoh kode berikut adalah Formulir Web ASP.NET, yang memanggil layanan Web XML bernama Math. EnterBtn_Click Dalam fungsi , Formulir Web memulai dan menyelesaikan pemanggilan asinkron metode Add layanan Web XML.

<%@ Page Language="VB" %>
<html>
    <script language="VB" runat="server">
    Sub EnterBtn_Click(Src As Object, E As EventArgs)
        Dim math As New MyMath.Math()
        
        ' Call to Add XML Web service method asynchronously.
        Dim result As IAsyncResult = math.BeginAdd(Convert.ToInt32(Num1.Text), Convert.ToInt32(Num2.Text), Nothing, Nothing)
        
        ' Wait for the asynchronous call to complete.
        result.AsyncWaitHandle.WaitOne()
        
        ' Complete the asynchronous call to the Add XML Web service method.
        Dim iTotal As Integer = math.EndAdd(result)
        
        Total.Text = "Total: " & iTotal.ToString()
    End Sub 'EnterBtn_Click
 
  </script>
 
    <body>
       <form action="MathClient.aspx" runat=server>
           
          Enter the two numbers you want to add and then press the Total button.
          <p>
          Number 1: <asp:textbox id="Num1" runat=server/>  +
          Number 2: <asp:textbox id="Num2" runat=server/> =
          <asp:button text="Total" Onclick="EnterBtn_Click" runat=server/>
          <p>
          <asp:label id="Total"  runat=server/>
          
       </form>
    </body>
 </html>

Contoh kode berikut adalah kelas proksi yang dihasilkan oleh alat Bahasa Deskripsi Layanan Web (Wsdl.exe) untuk Math layanan Web XML di bawah ini. EndAdd Dalam metode kelas proksi, EndInvoke metode memulai pemanggilan asinkron dari Add metode layanan Web XML.

namespace MyMath
{
   [XmlRootAttribute("snippet1>",Namespace="http://MyMath/",IsNullable=false)]
   public ref class Math: public HttpGetClientProtocol
   {
   public:
      Math()
      {
         this->Url = "http://www.contoso.com/math.asmx";
      }

      [HttpMethodAttribute(System::Web::Services::Protocols::XmlReturnReader::typeid,
      System::Web::Services::Protocols::UrlParameterWriter::typeid)]
      int Add( String^ num1, String^ num2 )
      {
         array<Object^>^temp0 = {num1,num2};
         return  *dynamic_cast<int^>(this->Invoke( "Add", String::Concat( this->Url, "/Add" ), temp0 ));
      }

      IAsyncResult^ BeginAdd( String^ num1, String^ num2, AsyncCallback^ callback, Object^ asyncState )
      {
         array<Object^>^temp1 = {num1,num2};
         return this->BeginInvoke( "Add", String::Concat( this->Url, "/Add" ), temp1, callback, asyncState );
      }

      int EndAdd( IAsyncResult^ asyncResult )
      {
         return  *dynamic_cast<int^>(this->EndInvoke( asyncResult ));
      }
   };
}

namespace MyMath
{
    [XmlRootAttribute("int", Namespace = "http://MyMath/", IsNullable = false)]
    public class Math : HttpGetClientProtocol
    {
        public Math()
        {
            this.Url = "http://www.contoso.com/math.asmx";
        }

        [HttpMethodAttribute(typeof(System.Web.Services.Protocols.XmlReturnReader),
            typeof(System.Web.Services.Protocols.UrlParameterWriter))]
        public int Add(int num1, int num2)
        {
            return ((int)(this.Invoke("Add", ((this.Url) + ("/Add")),
                new object[] { num1, num2 })));
        }

        public IAsyncResult BeginAdd(int num1, int num2, AsyncCallback callback, object asyncState)
        {
            return this.BeginInvoke("Add", ((this.Url) + ("/Add")),
                new object[] { num1, num2 }, callback, asyncState);
        }

        public int EndAdd(IAsyncResult asyncResult)
        {
            return ((int)(this.EndInvoke(asyncResult)));
        }
    }
}

Namespace MyMath
    <XmlRootAttribute("int", Namespace := "http://MyMath/", IsNullable := False)> _
    Public Class Math
        Inherits HttpGetClientProtocol
        
        Public Sub New()
            Me.Url = "http://www.contoso.com/math.asmx"
        End Sub
        
        <HttpMethodAttribute(GetType(XmlReturnReader), GetType(UrlParameterWriter))> _
        Public Function Add(num1 As String, num2 As String) As Integer
            Return CInt(Me.Invoke("Add", Me.Url + "/Add", New Object() {num1, num2}))
        End Function 'Add
        
        
        Public Function BeginAdd(num1 As String, num2 As String, callback As AsyncCallback, asyncState As Object) As IAsyncResult
            Return Me.BeginInvoke("Add", Me.Url + "/Add", New Object() {num1, num2}, callback, asyncState)
        End Function 'BeginAdd
        
        
        Public Function EndAdd(asyncResult As IAsyncResult) As Integer
            Return CInt(Me.EndInvoke(asyncResult))
        End Function 'EndAdd
    End Class
End Namespace 'MyMath

Contoh kode berikut adalah Math layanan Web XML, tempat kelas proksi di atas dibuat.

<%@ WebService Language="C#" Class="Math"%>
 using System.Web.Services;
 using System;
 
 public class Math {
      [ WebMethod ]
      public int Add(int num1, int num2) {
          return num1+num2;
          }
 }

<%@ WebService Language="VB" Class="Math"%>
Imports System.Web.Services
Imports System

Public Class Math
    <WebMethod()> _
    Public Function Add(num1 As Integer, num2 As Integer) As Integer
        Return num1 + num2
    End Function 'Add
End Class 'Math

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