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WebClientProtocol.Credentials Property

Gets or sets security credentials for XML Web service client authentication.

Namespace:  System.Web.Services.Protocols
Assembly:  System.Web.Services (in System.Web.Services.dll)

public function get Credentials () : ICredentials 
public function set Credentials (value : ICredentials)

Property Value

Type: System.Net.ICredentials
The ICredentials for the XML Web service client.

When using the Credentials property, a XML Web service client must instantiate a class implementing ICredentials, such as NetworkCredential, and then set the client credentials specific to the authentication mechanism. The NetworkCredential class can be used to set authentication credentials using the basic, digest, NTLM and Kerberos authentication mechanisms.

When the Credentials property is set to CredentialCache.DefaultCredentials then the client negotiates with the server to do Kerberos and/or NTLM authentication depending on how the server is configured.

The following example is an ASP.NET Web Form, which calls an XML Web service named Math. Within the EnterBtn_Click function, the Web Form explicitly sets authentication credentials using the Credentials property. The user name, password and domain are passed into the constructor for the NetworkCredential class.

Security noteSecurity Note:

This example has a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see.

<%@ Page Language="JSCRIPT" src="source.js" %>
<%@ Import Namespace="System.Net" %>

<html>
    <script language="JSCRIPT" runat="server">
        function EnterBtn_Click(src : Object, e : EventArgs){
            var math : MyMath.Math = new MyMath.Math()

            // Obtain password from a secure store.
            var SecurelyStoredPassword 

            // Set the client-side credentials using the Credentials property.
            var credentials : NetworkCredential = new NetworkCredential("Joe", SecurelyStoredPassword, "mydomain")
            math.Credentials = credentials

            var iTotal : int = math.Add(Convert.ToInt32(Num1.Text), Convert.ToInt32(Num2.Text))
            Total.Text = "Total: " + iTotal.ToString()
        }

    </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>

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0
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