حول XML Web Service

XML Web Service

أولا XML Web Service أعتبرها DDL موجودة على النت

فيها Functions وما إلى ذلك بحيث أي شخص يستفيد منها على الانترنت

مثال بسيط جدا جدا

أفتح الدوت نت وأختر ASP.NET Web Service

ثم موافق

ثم أنقر نقرا مزدوجا على النموذج تظهر لك نافذه الكود هذه

Imports System.Web.Services



<WebService(Namespace := "http://tempuri.org/")> _

Public Class Service1

    Inherits System.Web.Services.WebService



#Region " Web Services Designer Generated Code "



    Public Sub New()

        MyBase.New()



        'This call is required by the Web Services Designer.

        InitializeComponent()



        'Add your own initialization code after the InitializeComponent() call



    End Sub



    'Required by the Web Services Designer

    Private components As System.ComponentModel.IContainer



    'NOTE: The following procedure is required by the Web Services Designer

    'It can be modified using the Web Services Designer.  

    'Do not modify it using the code editor.

    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()

        components = New System.ComponentModel.Container()

    End Sub



    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)

        'CODEGEN: This procedure is required by the Web Services Designer

        'Do not modify it using the code editor.

        If disposing Then

            If Not (components Is Nothing) Then

                components.Dispose()

            End If

        End If

        MyBase.Dispose(disposing)

    End Sub



#End Region



    ' WEB SERVICE EXAMPLE

    ' The HelloWorld() example service returns the string Hello World.

    ' To build, uncomment the following lines then save and build the project.

    ' To test this web service, ensure that the .asmx file is the start page

    ' and press F5.

    '

    '<WebMethod()> Public Function HelloWorld() As String

    '	HelloWorld = "Hello World"

    ' End Function



End Class

أكتب الكود

وهي function ما ادري من وين جت على بالي المهم الفكرة

<WebMethod()> Public Function myFunc(ByVal str As String) As String

        Return str & " : XML Web Server"

    End Function

أضغط F5

ستظهر لك هذه الصفحه على متصفح الانترنت

Service1





The following operations are supported. For a formal definition, please review the Service Description.



myFunc 





--------------------------------------------------------------------------------



This web service is using http://tempuri.org/ as its default namespace.

Recommendation: Change the default namespace before the XML Web service is made public.

Each XML Web service needs a unique namespace in order for client applications to distinguish it from other services on the Web. http://tempuri.org/ is available for XML Web services that are under development, but published XML Web services should use a more permanent namespace.



Your XML Web service should be identified by a namespace that you control. For example, you can use your company's Internet domain name as part of the namespace. Although many XML Web service namespaces look like URLs, they need not point to actual resources on the Web. (XML Web service namespaces are URIs.)



For XML Web services creating using ASP.NET, the default namespace can be changed using the WebService attribute's Namespace property. The WebService attribute is an attribute applied to the class that contains the XML Web service methods. Below is a code example that sets the namespace to "http://microsoft.com/webservices/":



C#



[WebService(Namespace="http://microsoft.com/webservices/")]

public class MyWebService {

    // implementation

}

Visual Basic.NET



<WebService(Namespace:="http://microsoft.com/webservices/")> Public Class MyWebService

    ' implementation

End Class

For more details on XML namespaces, see the W3C recommendation on Namespaces in XML.



For more details on WSDL, see the WSDL Specification.



For more details on URIs, see RFC 2396.

http://localhost/WebService1/Service1.asmx

مبروك لقد عملت XML Web Service

أفتح مشروع فيجول بيسك جديد

ضع button على النوذج

ومن قائمة Project أختر Add Web Reference

ثم ضع موقع web service في الشاشة التي ستظهر لك كاملا

وفي برنامج هذا الموقع هو

http://localhost/WebService1/Service1.asmx

ثم أنقر علىadd Reference

سيضع أسمها أفتراضيا localhost

كيفية استخدامها

أنقر على button1

وأكتب الكود التالي

  Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Dim ws As New localhost.Service1()

        MessageBox.Show(ws.myFunc("dotnet4arab"))

    End Sub

ثم F5

ثم أنقر على button1

أعذروني إن كان في تقصيير في الشرح ومستعدين للاسئلة

تحياتي