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 OUTPUTASBEGIN SELECT * FROM T_Customer WHERE NAME=@Name SET  @Rowcount=@@ROWCOUNTENDGO------------------------------------------------------------------------------------------存储过程调用如下:----------------------------------------------------------------------------------------DECLARE @i INTEXEC P_TEST 'A',@i OUTPUTSELECT @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）*/------------------------------------------------------------------------------------------DotNet 部分(C#)--WebConfig 文件:----------------------------------------------------------------------------------------...... </system.web>    <!-- 数据库连接字符串   --> <appSettings>      <add key="ConnectString" value="server=(local);User ID=sa;Password=;database=Test" /></appSettings>  </configuration>------------------------------------------------------------------------------------------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();   }  }----------------------------------------------------------------------------------------运行以上代码即可(返回记录集合和存储过程返回值)