blocks|key|1530473|text|将URL行为更改为"Dynamic“。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1530474|entityMap|0|LINK|mutability|MUTABLE|url|http://www.codeproject.com/KB/XML/wsdldynamicurl.aspx^0|A|7|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Change URL behavior to "<a href="http://www.codeproject.com/KB/XML/wsdldynamicurl.aspx" rel="nofollow noreferrer">Dynamic</a>".

blocks|key|1745510|text|当您生成web引用并在解决方案资源管理器中单击该web引用时。在属性窗格中，您应该看到如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1745511|​|1745512|📷|atomic|offset|length|1745513|1745514|将该值更改为dynamic将在app.config中放置一个条目。|1745515|下面是包含更多信息的CodePlex+article。|1745516|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/ed8dc6d75a1db70a27ed8d3435cf5124.gif|imageAlt|1|LINK|MUTABLE|url|http://www.codeproject.com/KB/XML/wsdldynamicurl.aspx^0|0|0|0|1|0|0|0|0|A|G|1|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|12|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|13|8|@]|9|@$G|14|H|15|1|16]]|A|$]]|$1|I|3|C|5|6|7|17|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|18|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|19|8|@]|9|@$G|1A|H|1B|1|1C]]|A|$]]|$1|N|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]]|O|$P|$5|Q|R|S|A|$T|U|V|-4]]|W|$5|X|R|Y|A|$Z|10]]]]

When you generate a web reference and click on the web reference in the Solution Explorer. In the properties pane you should see something like this:

<img src="https://www.codeproject.com/KB/XML/WSDLDynamicURL/URL_Behavior_Dynamic.GIF" alt="Web Reference Properties">

Changing the value to dynamic will put an entry in your app.config.

Here is the <a href="http://www.codeproject.com/KB/XML/wsdldynamicurl.aspx" rel="noreferrer">CodePlex article</a> that has more information.

blocks|key|1745554|text|如果要从数据库获取URL，则可以手动将其分配给web服务代理类URL属性。这应该在调用web方法之前完成。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1745555|如果要使用配置文件，可以将代理类URL行为设置为动态。|1745556|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

If you are fetching the URL from a database you can manually assign it to the web service proxy class URL property. This should be done before calling the web method.

If you would like to use the config file, you can set the proxy classes URL behavior to dynamic.

blocks|key|1530662|text|只要web服务方法和底层公开的类不发生变化，这就相当简单。在Visual+Studio2005(及更高版本)中，添加web引用会创建一个包含此URL的app.config+(或web.config，对于web应用程序)部分。您所要做的就是编辑app.config文件以反映所需的URL。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1530663|在我们的项目中，我们的简单方法是只对每个环境类型(开发、测试、生产)的app.config条目进行注释。因此，我们只需取消对所需环境类型的条目的注释。这里不需要特殊的编码。|1530664|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

As long as the web service methods and underlying exposed classes do not change, it's fairly trivial. With Visual Studio 2005 (and newer), adding a web reference creates an app.config (or web.config, for web apps) section that has this URL. All you have to do is edit the app.config file to reflect the desired URL.

In our project, our simple approach was to just have the app.config entries commented per environment type (development, testing, production). So we just uncomment the entry for the desired environment type. No special coding needed there.

blocks|key|1745678|text|毫无疑问，使用Url属性是可行的。是否将其设置在app.config、数据库或第三个位置取决于您的配置需要。有时，您不希望应用程序在您更改web服务位置时重新启动。您可能没有扩展后端的负载均衡器。您可能正在修补web服务错误。您的实现也可能存在安全配置问题。无论是生产数据库的用户名和密码，甚至是ws安全身份验证信息。适当的职责分离可以让您进入一些更复杂的配置设置。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1745679|如果在代理生成的类周围添加包装类，则可以在每次创建包装类时以某种统一的方式设置Url属性以调用web方法。|1745680|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Definitely using the Url property is the way to go. Whether to set it in the app.config, the database, or a third location sort of depends on your configuration needs. Sometimes you don't want the app to restart when you change the web service location. You might not have a load balancer scaling the backend. You might be hot-patching a web service bug. Your implementation might have security configuration issues as well. Whether it's production db usernames and passwords or even the ws security auth info. The proper separation of duties can get you into some more involved configuration setups.

If you add a wrapper class around the proxy generated classes, you can set the Url property in some unified fashion every time you create the wrapper class to call a web method.

blocks|key|1745730|text|我已经在这个问题上挣扎了几天，最后电灯泡终于打开了。能够在运行时更改KEY服务的URL的关键是覆盖构造函数，我使用部分类声明做到了这一点。如上所述，还必须将URL行为设置为Dynamic。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1745731|这基本上创建了一个web服务包装器，如果您必须在某个时候通过添加服务引用重新加载web服务，您不会丢失您的工作。Microsoft对分部类的帮助特别说明了这种构造的部分原因是为了创建web服务包装器。http://msdn.microsoft.com/en-us/library/wa80x488(v=vs.100).aspx|offset|length|1745732|//+Web+Service+Wrapper+to+override+constructor+to+use+custom+ConfigSection+
//+app.config+values+for+URL/User/Pass
namespace+myprogram.webservice
{
++++public+partial+class+MyWebService
++++{
++++++++public+MyWebService(string+szURL)
++++++++{
++++++++++++this.Url+=+szURL;
++++++++++++if+((this.IsLocalFileSystemWebService(this.Url)+==+true))
++++++++++++{
++++++++++++++++this.UseDefaultCredentials+=+true;
++++++++++++++++this.useDefaultCredentialsSetExplicitly+=+false;
++++++++++++}
++++++++++++else
++++++++++++{
++++++++++++++++this.useDefaultCredentialsSetExplicitly+=+true;
++++++++++++}
++++++++}
++++}
}|code-block|syntax|javascript|1745733|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/wa80x488(v=vs.100).aspx^0|0|2S|1R|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@$D|U|E|V|1|W]]|A|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

I've struggled with this issue for a few days and finally the light bulb clicked. The KEY to being able to change the URL of a webservice at runtime is overriding the constructor, which I did with a partial class declaration. The above, setting the URL behavior to Dynamic must also be done. 

This basically creates a web-service wrapper where if you have to reload web service at some point, via add service reference, you don't loose your work. The Microsoft help for Partial classes specially states that part of the reason for this construct is to create web service wrappers. <a href="http://msdn.microsoft.com/en-us/library/wa80x488(v=vs.100).aspx" rel="noreferrer">http://msdn.microsoft.com/en-us/library/wa80x488(v=vs.100).aspx</a> 

<pre><code>// Web Service Wrapper to override constructor to use custom ConfigSection 
// app.config values for URL/User/Pass
namespace myprogram.webservice
{
 public partial class MyWebService
 {
 public MyWebService(string szURL)
 {
 this.Url = szURL;
 if ((this.IsLocalFileSystemWebService(this.Url) == true))
 {
 this.UseDefaultCredentials = true;
 this.useDefaultCredentialsSetExplicitly = false;
 }
 else
 {
 this.useDefaultCredentialsSetExplicitly = true;
 }
 }
 }
}
</code></pre>

blocks|key|1745783|text|打开solition资源管理器|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1745784|右键单击URL服务将URL行为更改为动态|1745785|在解决方案资源管理器中单击“显示所有文件”图标。|1745786|在web参考中，编辑Reference.cs文件|1745787|更改构造器|1745788|public+Service1()+{
++++++++this.Url+=+"URL";+//+etc.+string++variable+this.Url+=+ConfigClass.myURL
++++++}|code-block|syntax|javascript|1745789|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|S|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|U|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|V|8|@]|9|@]|A|$M|N]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

open solition explorer

right click the webservice change URL Behavior to Dynamic

click the 'show all files' icon in solution explorer

in the web reference edit the Reference.cs file

change constructer

<pre><code>public Service1() {
 this.Url = "URL"; // etc. string variable this.Url = ConfigClass.myURL
 }
</code></pre>

blocks|key|1745829|text|我知道这是一个古老的问题，但我们的解决方案比我在这里看到的要简单得多。我们使用它来调用VS2010和up的WCF。字符串url可以来自应用程序设置或其他来源。在我的例子中，它是一个下拉列表，用户可以在其中选择服务器。TheService是通过VS添加服务引用配置的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1745830|private+void+CallTheService(+string+url+)
{
+++TheService.TheServiceClient+client+=+new+TheService.TheServiceClient();
+++client.Endpoint.Address+=+new+System.ServiceModel.EndpointAddress(url);
+++var+results+=+client.AMethodFromTheService();
}|code-block|syntax|javascript|1745831|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I know this is an old question, but our solution is much simpler than what I see here. We use it for WCF calls with VS2010 and up. The string url can come from app settings or another source. In my case it is a drop down list where the user picks the server. TheService was configured through VS add service reference. 

<pre><code>private void CallTheService( string url )
{
 TheService.TheServiceClient client = new TheService.TheServiceClient();
 client.Endpoint.Address = new System.ServiceModel.EndpointAddress(url);
 var results = client.AMethodFromTheService();
}
</code></pre>

I have code that references a web service, and I'd like the address of that web service to be dynamic (read from a database, config file, etc.) so that it is easily changed. One major use of this will be to deploy to multiple environments where machine names and IP addresses are different. The web service signature will be the same across all deployments, just located elsewhere.

Maybe I've just been spoiled by the Visual Studio "Add Web Reference" wizard - seems like this should be something relatively easy, though.

How can I dynamically switch web service addresses in .NET without a recompile?

我有引用web服务的代码，并且我希望该web服务的地址是动态的(从数据库、配置文件等读取)。所以它很容易改变。它的一个主要用途是部署到计算机名称和IP地址不同的多个环境中。web服务签名在所有部署中都是相同的，只是位于其他地方。也许我只是被Visual Studio的“添加Web引用”向导宠坏了--尽管这看起来应该是相...

问如何在不重新编译的情况下在.NET中动态切换web服务地址？
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