winform里宿主WCF，並傳遞winform變量給WCF

最近客戶要求把服務器端程序里的二個功能用service的方式提供出來，方便調用。首先想着單獨建一個wcf 服務的項目，但是因為要用到server端程序winform里的變量，因此只能在winform里添加一個wcf service的item。下面介紹詳細的操作步驟：

 

1. winform里添加wcf service的item

添加之后，app.config里會自動加上wcf的配置項：

<system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name="">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />

        </behavior>
      </serviceBehaviors>
    </behaviors>
    <services>
      <service name="OrayTalk.Server.Broadcast.BroadcastService">
        <endpoint address="" binding="basicHttpBinding" contract="OrayTalk.Server.Broadcast.IBroadcastService">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8111/BroadcastService" />
          </baseAddresses>
        </host>
      </service>
    </services>
  </system.serviceModel>

 

其中下面這行，我把它改得簡單了一點，默認的地址太長：

<add baseAddress="http://localhost:8111/BroadcastService" />

 

2.  定義好service，這里我用構造函數把winform里的變量傳進來:

public class BroadcastService : IBroadcastService
{
    public static IRapidServerEngine m_RapidServerEngine;
    public static IOrayCache m_OrayCache;

    public BroadcastService(IRapidServerEngine rapidServerEngine, IOrayCache orayCache)
    {
        m_RapidServerEngine = rapidServerEngine;
        m_OrayCache = orayCache;
    }

    ...
}

 

3. 在form的load事件里host wcf服務， closed事件里關閉：

ServiceHost m_Host;
private void MainServerForm_Load(object sender, EventArgs e)
{
    try
    {
        BroadcastService broadcastSvc = new BroadcastService(this.rapidServerEngine, orayCache);
        m_Host = new ServiceHost(broadcastSvc);
        m_Host.Open();
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

private void MainServerForm_FormClosed(object sender, FormClosedEventArgs e)
{
    m_Host.Close();
}

 

這里要注意的是下面二行，把變量傳遞進去：

BroadcastService broadcastSvc = new BroadcastService(this.rapidServerEngine, orayCache);
m_Host = new ServiceHost(broadcastSvc);

如果不用傳變量到wcf服務里，可以簡化成

m_Host = new ServiceHost(typeof(BroadcastService))

4. wcf服務類上加上屬性

[ServiceBehavior(InstanceContextMode = InstanceContextMode.Single)]
public class BroadcastService : IBroadcastService

5. 啟動winform程序后，就可以訪問在第一步里定義的wcf地址了

<add baseAddress="http://localhost:8111/BroadcastService" />

 

這時訪問http://localhost:8111/BroadcastService即可。

 

 

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