C# 調用預存程序簡單完整的執行個體代碼_實用技巧

CREATE PROC P_TEST@Name VARCHAR(20),
@Rowcount INT OUTPUT
AS
BEGIN
SELECT * FROM T_Customer WHERE NAME=@Name
SET @Rowcount=@@ROWCOUNT
END
GO
----------------------------------------------------------------------------------------
--預存程序調用如下:
----------------------------------------------------------------------------------------
DECLARE @i INT
EXEC P_TEST 'A',@i OUTPUT
SELECT @i
--結果
/*
Name Address Tel
---------- ---------- --------------------
A Address Telphone

（所影響的行數為 1 行）


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

（所影響的行數為 1 行）
*/
----------------------------------------------------------------------------------------

--DotNet 部分(C#)
--WebConfig 檔案:
----------------------------------------------------------------------------------------
......
</system.web>

<!-- 資料庫連接字串
-->
<appSettings>
<add key="ConnectString" value="server=(local);User ID=sa;Password=;database=Test" />
</appSettings>

</configuration>
----------------------------------------------------------------------------------------
--C#代碼:(用到兩個測試控制項,DataGrid1(用於顯示綁定結果集合),Lable(用於顯示預存程序返回單值)

代碼

複製代碼 代碼如下:

using System.Data.SqlClient;
private void Page_Load(object sender, System.EventArgs e)

{ // 在此處放置使用者代碼以初始化頁面
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; //添加輸入查詢參數、賦予值
myCommand.Parameters.Add("@Name",SqlDbType.VarChar);
myCommand.Parameters["@Name"].Value ="A"; //添加輸出參數
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(); //得到預存程序輸出參數
Label1.Text=myCommand.Parameters["@Rowcount"].Value.ToString();
if (myConnection.State == ConnectionState.Open) { myConnection.Close();
}
}