c#調用帶參數或返回值的存儲過程

CREATE PROCEDURE [dbo].[GetNameById]  
 @studentid varchar(8),  
 @studentname nvarchar(50) OUTPUT  
AS  
BEGIN  
 SELECT @studentname=studentname FROM student  
    WHERE studentid=@studentid  
 if @@Error<>0  
  RETURN -1  
 else   
  RETURN 0   
END  
  
  
using (SqlConnection conn = new SqlConnection(connStr))  
{  
    try  
    {  
        SqlCommand cmd = new SqlCommand("GetNameById", conn);  
        cmd.CommandType = CommandType.StoredProcedure;  
        cmd.Parameters.AddWithValue("@studentid", "09888888");　　//給輸入參數賦值  
        SqlParameter parOutput =cmd.Parameters.Add("@studentname", SqlDbType.NVarChar, 50);　　//定義輸出參數  
        parOutput.Direction = ParameterDirection.Output;　　//參數類型爲Output  
        SqlParameter parReturn = new SqlParameter("@return", SqlDbType.Int);  
        parReturn.Direction = ParameterDirection.ReturnValue; 　　//參數類型爲ReturnValue                     
        cmd.Parameters.Add(parReturn);  
        conn.Open();  
        cmd.ExecuteNonQuery();  
        MessageBox.Show(parOutput.Value.ToString());   //顯示輸出參數的值  
        MessageBox.Show(parReturn.Value.ToString());　　//顯示返回值  
    }  
    catch (System.Exception ex)  
    {  
        MessageBox.Show(ex.Message);  
    }  
}  
  
  
Create PROCEDURE AddOrderTran  
    @country nvarchar(100),  
    @adds nvarchar(100),  
    @ynames nvarchar(100),  
    @pids nvarchar(100),  
    @cellp nvarchar(100),  
    @cphone nvarchar(100),  
    @amounts nvarchar(100),  
    @cartnumber nvarchar(100)  
as  
    Declare @id int  
    BEGIN TRANSACTION     
        insert into Orders(Order_Country,Order_Adress,Order_UserName,Order_PostID,Cells,Order_Phone,Total_pay,CartNumber,IsPay)   
            values (@country,@adds,@ynames,@pids,@cellp,@cphone,@amounts,@cartnumber,'0')  
        Select @id=@@identity  
        insert into Orders_Item (OrderNumber,ProductsID,Products_Color,Products_Price,Order_Qty,Item_Total)   
            select  @id,Carts_Item.ProductsID,Carts_Item.Products_Color,Carts_Item.Products_Price,Carts_Item.Item_Qty,Carts_Item.Total_Pay   
            from Carts_Item where Carts_Item.CartNumber=@cartnumber     
        delete Carts_Item where CartNumber=@cartnumber  
        IF @@error <> 0  --發生錯誤  
        BEGIN  
            ROLLBACK TRANSACTION  
            RETURN 0  
        END  
        ELSE  
        BEGIN  
            COMMIT TRANSACTION  
            RETURN @id    --執行成功  
    END  
 
 
 
        #region 執行存儲過程  
  
        SqlParameter[] param = new SqlParameter[]     
          {     
              new SqlParameter("@country",country),    
              new SqlParameter("@adds",adds),     
              new SqlParameter("@ynames",ynames),     
              new SqlParameter("@pids", pids),     
              new SqlParameter("@cellp",cellp),    
              new SqlParameter("@cphone", cphone),  
              new SqlParameter("@amounts",amounts),  
              new SqlParameter("@cartnumber",cartnumber),  
              new SqlParameter("@return",SqlDbType.Int)  
          };  
        param[8].Direction = ParameterDirection.ReturnValue;  
        MSCL.SqlHelper.RunProcedure("AddOrderTran", param);  
        object obj = param[8].Value; //接受返回值  
  
  
        //string connStr = System.Configuration.ConfigurationManager.AppSettings["ConStr"].ToString();  
        //using (SqlConnection conn = new SqlConnection(connStr))  
        //{  
        //    conn.Open();  
        //    SqlCommand cmd = new SqlCommand("AddOrderTran", conn);  
        //    cmd.CommandType = CommandType.StoredProcedure;  
  
        //    SqlParameter para1 = new SqlParameter("@country", country);  
        //    para1.Direction = ParameterDirection.Input;  //參數方向 爲輸入參數  
        //    cmd.Parameters.Add(para1);  
  
        //    SqlParameter para2 = new SqlParameter("@adds", adds);  
        //    para2.Direction = ParameterDirection.Input;  
        //    cmd.Parameters.Add(para2);  
  
        //    SqlParameter para3 = new SqlParameter("@ynames", ynames);  
        //    para3.Direction = ParameterDirection.Input;  
        //    cmd.Parameters.Add(para3);  
  
        //    SqlParameter para4 = new SqlParameter("@pids", pids);  
        //    para4.Direction = ParameterDirection.Input;  
        //    cmd.Parameters.Add(para4);  
  
        //    SqlParameter para5 = new SqlParameter("@cellp", cellp);  
        //    para5.Direction = ParameterDirection.Input;  
        //    cmd.Parameters.Add(para5);  
  
        //    SqlParameter para6 = new SqlParameter("@cphone", cphone);  
        //    para6.Direction = ParameterDirection.Input;  
        //    cmd.Parameters.Add(para6);  
  
        //    SqlParameter para7 = new SqlParameter("@amounts", amounts);  
        //    para7.Direction = ParameterDirection.Input;  
        //    cmd.Parameters.Add(para7);  
  
        //    SqlParameter para8 = new SqlParameter("@cartnumber", cartnumber);  
        //    para8.Direction = ParameterDirection.Input;  
        //    cmd.Parameters.Add(para8);  
  
        //    SqlParameter paraReturn = new SqlParameter("@return", SqlDbType.Int);  
        //    paraReturn.Direction = ParameterDirection.ReturnValue;  //參數方向 爲返回參數  
        //    cmd.Parameters.Add(paraReturn);  
  
        //    cmd.ExecuteNonQuery();  
  
        //    object obj = paraReturn;  
        //    if (obj.ToString() == "0")  
        //    {  
        //        //存儲過程執行失敗  
        //    }  
        //    else  
        //    {  
        //        //成功  
        //    }  
        //}  
        //#endregion  
  
  
  
本文的數據庫用的是sql server自帶數據Northwind   
   
1.只返回單一記錄集的存儲過程  
  
SqlConnection sqlconn = new SqlConnection(conn);  
SqlCommand cmd = new SqlCommand();  
// 設置sql連接  
cmd.Connection = sqlconn;  
// 如果執行語句  
cmd.CommandText = "Categoriestest1";  
// 指定執行語句爲存儲過程  
cmd.CommandType = CommandType.StoredProcedure;  
  
SqlDataAdapter dp = new SqlDataAdapter(cmd);  
DataSet ds = new DataSet();  
// 填充dataset  
dp.Fill(ds);  
// 以下是顯示效果  
GridView1.DataSource = ds;  
GridView1.DataBind();  
  
   
  
存儲過程Categoriestest1  
CREATE PROCEDURE Categoriestest1   
 AS  
 select *   
 from  Categories  
 GO  
  
  
  
2. 沒有輸入輸出的存儲過程  
SqlConnection sqlconn = new SqlConnection(conn);  
SqlCommand cmd = new SqlCommand();  
  
cmd.Connection = sqlconn;  
cmd.CommandText = "Categoriestest2";  
cmd.CommandType = CommandType.StoredProcedure;  
sqlconn.Open();  
// 執行並顯示影響行數  
Label1.Text = cmd.ExecuteNonQuery().ToString();  
sqlconn.Close();  
  
  
存儲過程Categoriestest2  
  
CREATE PROCEDURE Categoriestest2  AS  
 insert into dbo.Categories   
 (CategoryName,[Description],[Picture])  
 values ('test1','test1',null)  
 GO  
  
   
  
3. 有返回值的存儲過程  
SqlConnection sqlconn = new SqlConnection(conn);  
         SqlCommand cmd = new SqlCommand();  
         cmd.Connection = sqlconn;  
         cmd.CommandText = "Categoriestest3";  
         cmd.CommandType = CommandType.StoredProcedure;  
         // 創建參數  
        IDataParameter[] parameters = {  
                 new SqlParameter("rval", SqlDbType.Int,4)  
             };  
         // 將參數類型設置爲 返回值類型  
        parameters[0].Direction = ParameterDirection.ReturnValue;  
         // 添加參數  
        cmd.Parameters.Add(parameters[0]);  
  
         sqlconn.Open();  
         // 執行存儲過程並返回影響的行數  
        Label1.Text = cmd.ExecuteNonQuery().ToString();  
         sqlconn.Close();  
         // 顯示影響的行數和返回值  
        Label1.Text += "-" + parameters[0].Value.ToString() ;  
  
  
存儲過程Categoriestest3  
  
CREATE PROCEDURE Categoriestest3  
 AS  
 insert into dbo.Categories   
 (CategoryName,[Description],[Picture])  
 values ('test1','test1',null)  
return @@rowcount  
 GO  
  
4. 有輸入參數和輸出參數的存儲過程  
  
 SqlConnection sqlconn = new SqlConnection(conn);  
         SqlCommand cmd = new SqlCommand();  
         cmd.Connection = sqlconn;  
         cmd.CommandText = "Categoriestest4";  
         cmd.CommandType = CommandType.StoredProcedure;  
         // 創建參數  
        IDataParameter[] parameters = {  
                 new SqlParameter("@Id", SqlDbType.Int,4) ,  
                 new SqlParameter("@CategoryName", SqlDbType.NVarChar,15) ,  
             };  
         // 設置參數類型  
        parameters[0].Direction = ParameterDirection.Output;  // 設置爲輸出參數  
        parameters[1].Value = "testCategoryName";  
         // 添加參數  
        cmd.Parameters.Add(parameters[0]);  
         cmd.Parameters.Add(parameters[1]);  
  
         sqlconn.Open();  
         // 執行存儲過程並返回影響的行數  
        Label1.Text = cmd.ExecuteNonQuery().ToString();  
         sqlconn.Close();  
         // 顯示影響的行數和輸出參數  
        Label1.Text += "-" + parameters[0].Value.ToString() ;  
  
存儲過程Categoriestest4        
  
CREATE PROCEDURE Categoriestest4  
 @id int output,  
 @CategoryName nvarchar(15)  
 AS  
 insert into dbo.Categories   
 (CategoryName,[Description],[Picture])  
 values (@CategoryName,'test1',null)  
set  @id = @@IDENTITY  
 GO  
  
   
  
5. 同時具有返回值、輸入參數、輸出參數的存儲過程  
  
 SqlConnection sqlconn = new SqlConnection(conn);  
         SqlCommand cmd = new SqlCommand();  
         cmd.Connection = sqlconn;  
         cmd.CommandText = "Categoriestest5";  
         cmd.CommandType = CommandType.StoredProcedure;  
         // 創建參數  
        IDataParameter[] parameters = {  
                 new SqlParameter("@Id", SqlDbType.Int,4) ,  
                 new SqlParameter("@CategoryName", SqlDbType.NVarChar,15) ,  
                 new SqlParameter("rval", SqlDbType.Int,4)  
             };  
         // 設置參數類型  
        parameters[0].Direction = ParameterDirection.Output;       // 設置爲輸出參數  
        parameters[1].Value = "testCategoryName";                  // 給輸入參數賦值  
        parameters[2].Direction = ParameterDirection.ReturnValue;  // 設置爲返回值  
        // 添加參數  
        cmd.Parameters.Add(parameters[0]);  
         cmd.Parameters.Add(parameters[1]);  
         cmd.Parameters.Add(parameters[2]);  
  
         sqlconn.Open();  
         // 執行存儲過程並返回影響的行數  
        Label1.Text = cmd.ExecuteNonQuery().ToString();  
         sqlconn.Close();  
         // 顯示影響的行數，輸出參數和返回值  
        Label1.Text += "-" + parameters[0].Value.ToString() + "-" + parameters[2].Value.ToString();  
  
 存儲過程Categoriestest5  
  
CREATE PROCEDURE Categoriestest5  
 @id int output,  
 @CategoryName nvarchar(15)  
 AS  
 insert into dbo.Categories   
 (CategoryName,[Description],[Picture])  
 values (@CategoryName,'test1',null)  
set  @id = @@IDENTITY  
return @@rowcount  
 GO  
  
   
 6. 同時返回參數和記錄集的存儲過程  
    SqlConnection sqlconn = new SqlConnection(conn);  
    SqlCommand cmd = new SqlCommand();  
    cmd.Connection = sqlconn;  
    cmd.CommandText = "Categoriestest6";  
    cmd.CommandType = CommandType.StoredProcedure;  
         // 創建參數  
        IDataParameter[] parameters = {  
                 new SqlParameter("@Id", SqlDbType.Int,4) ,  
                 new SqlParameter("@CategoryName", SqlDbType.NVarChar,15) ,  
                 new SqlParameter("rval", SqlDbType.Int,4)                   // 返回值  
            };  
         // 設置參數類型  
    parameters[0].Direction = ParameterDirection.Output;        // 設置爲輸出參數  
    parameters[1].Value = "testCategoryName";                   // 給輸入參數賦值  
    parameters[2].Direction = ParameterDirection.ReturnValue;   // 設置爲返回值  
    // 添加參數  
    cmd.Parameters.Add(parameters[0]);  
    cmd.Parameters.Add(parameters[1]);  
    cmd.Parameters.Add(parameters[2]);  
  
    SqlDataAdapter dp = new SqlDataAdapter(cmd);  
    DataSet ds = new DataSet();  
    // 填充dataset  
    dp.Fill(ds);  
    // 顯示結果集  
    GridView1.DataSource = ds.Tables[0];  
    GridView1.DataBind();  
  
    Label1.Text = "";  
    // 顯示輸出參數和返回值  
    Label1.Text +=  parameters[0].Value.ToString() + "-" + parameters[2].Value.ToString();  
  
存儲過程Categoriestest6  
  
CREATE PROCEDURE Categoriestest6  
 @id int output,  
 @CategoryName nvarchar(15)  
 AS  
 insert into dbo.Categories   
 (CategoryName,[Description],[Picture])  
 values (@CategoryName,'test1',null)  
set  @id = @@IDENTITY  
 select * from Categories  
return @@rowcount  
 GO  
  
  
7. 返回多個記錄集的存儲過程  
  
SqlConnection sqlconn = new SqlConnection(conn);  
SqlCommand cmd = new SqlCommand();  
  
cmd.Connection = sqlconn;  
cmd.CommandText = "Categoriestest7";  
cmd.CommandType = CommandType.StoredProcedure;  
  
SqlDataAdapter dp = new SqlDataAdapter(cmd);  
DataSet ds = new DataSet();  
// 填充dataset  
dp.Fill(ds);  
// 顯示結果集1  
GridView1.DataSource = ds.Tables[0];  
GridView1.DataBind();  
// 顯示結果集2  
GridView2.DataSource = ds.Tables[1];  
GridView2.DataBind();  
  
   
存儲過程Categoriestest7  
  
CREATE PROCEDURE Categoriestest7  
 AS  
 select * from Categories  
 select * from Categories  
 GO