C# 使用存储过程访问数据库的完整例子

CREATE PROC P_TEST
@Name VARCHAR(20),
@Rowcount INT OUTPUT
AS
BEGIN
 SELECT * FROM T_Customer WHERE NAME=@Name
 SET  @Rowcount=@@ROWCOUNT
END
GO
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--存储过程调用如下:
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DECLARE @i INT
EXEC P_TEST 'A',@i OUTPUT
SELECT @i
--结果
/*
Name       Address    Tel                 
---------- ---------- --------------------
A          Address    Telphone

（所影响的行数为 1 行）

           
-----------
1

（所影响的行数为 1 行）
*/
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--DotNet 部分(C#)
--WebConfig 文件:
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......
 
 
   
 
      

  

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--C#代码:(用到两个测试控件,DataGrid1(用于显示绑定结果集合),Lable(用于显示存储过程返回单值)
----------------------------------------------------------------------------------------
//添加数据库引用
using System.Data.SqlClient;
......
 private void Page_Load(object sender, System.EventArgs e)
  {
   // 在此处放置用户代码以初始化页面
   String DBConnStr;
   DataSet MyDataSet=new DataSet();
   System.Data.SqlClient.SqlDataAdapter DataAdapter=new System.Data.SqlClient.SqlDataAdapter();
   DBConnStr=System.Configuration.ConfigurationSettings.AppSettings["ConnectString"];
   System.Data.SqlClient.SqlConnection myConnection = new System.Data.SqlClient.SqlConnection(DBConnStr);
   if (myConnection.State!=ConnectionState.Open)
   {
    myConnection.Open();
   }  
   System.Data.SqlClient.SqlCommand myCommand = new System.Data.SqlClient.SqlCommand("P_Test",myConnection);
   myCommand.CommandType=CommandType.StoredProcedure;
   //添加输入查询参数、赋予值
   myCommand.Parameters.Add("@Name",SqlDbType.VarChar);
   myCommand.Parameters["@Name"].Value ="A";

   //添加输出参数
   myCommand.Parameters.Add("@Rowcount",SqlDbType.Int);
   myCommand.Parameters["@Rowcount"].Direction=ParameterDirection.Output;


   myCommand.ExecuteNonQuery();
   DataAdapter.SelectCommand = myCommand;

   if (MyDataSet!=null)
   {
     DataAdapter.Fill(MyDataSet,"table");
   }
   
   DataGrid1.DataSource=MyDataSet;
   DataGrid1.DataBind();
   //得到存储过程输出参数
   Label1.Text=myCommand.Parameters["@Rowcount"].Value.ToString();

   if (myConnection.State == ConnectionState.Open)
   {
    myConnection.Close();
   }

  }
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运行以上代码即可(返回记录集合和存储过程返回值)