基于Windows服务的WCF

（1）创建WCF

代码示例：

[ServiceContract]

public interface ILimsDBService

{

[OperationContract]

int ExecuteSql(string strSql); 

[OperationContract]

DataTable GetDataTable(string strSql); 

[OperationContract]

DataSet GetDataSet(string strSql);

}

public class LimsDBService : ILimsDBService

{

public int ExecuteSql(string strSql)

{

OracleDBHelper dbo = new OracleDBHelper(ConfigInfo.LimsDbConnStr);

return dbo.ExecuteSql(strSql);

} 

public DataTable GetDataTable(string strSql)

{

OracleDBHelper dbo = new OracleDBHelper(ConfigInfo.LimsDbConnStr);

return dbo.GetDataTable(strSql);

} 

public DataSet GetDataSet(string strSql)

{

OracleDBHelper dbo = new OracleDBHelper(ConfigInfo.LimsDbConnStr);

return dbo.GetDataSet(strSql);

}

}

（2）创建Windows服务

代码示例：

public partial class LimsHsSysService : ServiceBase

{

ServiceHost LimsDBServiceHost = new ServiceHost(typeof(LimsDBService));

public LimsHsSysService()

{

InitializeComponent();

}

protected override void OnStart(string[] args)

{

LimsDBServiceHost.Open();

}

protected override void OnStop()

{

LimsDBServiceHost.Close();

}

}

（3）配置客户端

功能代码：

WSHttpBinding binding = new WSHttpBinding();

EndpointAddress address = new EndpointAddress("http://192.168.4.179:8732/Design_Time_Addresses/WcfLimsServer/LimsDBService/");

LimsDBServiceClient lims = new LimsDBService.LimsDBServiceClient(binding, address);

string sql = "select sample_id,material_type from nais_all_samples where sample_id=" + this.txtQuery.Text.Trim();

DataTable dt = lims.GetDataSet(sql).Tables[0];

this.gvData.DataSource = dt;

this.gvData.DataBind();