本文实例讲述了C#调用存储过程的方法。分享给大家供大家参考，具体如下：
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CREATE PROCEDURE [dbo].[GetNameById] @studentid varchar(8), @studentname nvarchar(50) OUTPUTASBEGIN SELECT @studentname=studentname FROM student WHERE studentid=@studentid if @@Error<>0 RETURN -1 else RETURN 0END |
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using (SqlConnection conn = new SqlConnection(connStr)){ try { SqlCommand cmd = new SqlCommand("GetNameById", conn); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.AddWithValue("@studentid", "09888888"); //给输入参数赋值 SqlParameter parOutput =cmd.Parameters.Add("@studentname", SqlDbType.NVarChar, 50); //定义输出参数 parOutput.Direction = ParameterDirection.Output; //参数类型为Output SqlParameter parReturn = new SqlParameter("@return", SqlDbType.Int); parReturn.Direction = ParameterDirection.ReturnValue; //参数类型为ReturnValue cmd.Parameters.Add(parReturn); conn.Open(); cmd.ExecuteNonQuery(); MessageBox.Show(parOutput.Value.ToString()); //显示输出参数的值 MessageBox.Show(parReturn.Value.ToString()); //显示返回值 } catch (System.Exception ex) { MessageBox.Show(ex.Message); }} |
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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 --发生错误 BEGIN ROLLBACK TRANSACTION RETURN 0 END ELSE BEGIN COMMIT TRANSACTION RETURN @id --执行成功 END |
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#region 执行存储过程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; //参数方向 为输入参数// 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; //参数方向 为返回参数// cmd.Parameters.Add(paraReturn);// cmd.ExecuteNonQuery();// object obj = paraReturn;// if (obj.ToString() == "0")// {// //存储过程执行失败// }// else// {// //成功// }//}//#endregion |
本文的数据库用的是sql server自带数据Northwind
1.只返回单一记录集的存储过程
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SqlConnection sqlconn = new SqlConnection(conn);SqlCommand cmd = new SqlCommand();// 设置sql连接cmd.Connection = sqlconn;// 如果执行语句cmd.CommandText = "Categoriestest1";// 指定执行语句为存储过程cmd.CommandType = CommandType.StoredProcedure;SqlDataAdapter dp = new SqlDataAdapter(cmd);DataSet ds = new DataSet();// 填充datasetdp.Fill(ds);// 以下是显示效果GridView1.DataSource = ds;GridView1.DataBind(); |
存储过程Categoriestest1
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CREATE PROCEDURE Categoriestest1 AS select * from Categories GO |
2. 没有输入输出的存储过程
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SqlConnection sqlconn = new SqlConnection(conn);SqlCommand cmd = new SqlCommand();cmd.Connection = sqlconn;cmd.CommandText = "Categoriestest2";cmd.CommandType = CommandType.StoredProcedure;sqlconn.Open();// 执行并显示影响行数Label1.Text = cmd.ExecuteNonQuery().ToString();sqlconn.Close(); |
存储过程Categoriestest2
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CREATE PROCEDURE Categoriestest2 AS insert into dbo.Categories (CategoryName,[Description],[Picture]) values ('test1','test1',null) GO |
3. 有返回值的存储过程
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SqlConnection sqlconn = new SqlConnection(conn);SqlCommand cmd = new SqlCommand();cmd.Connection = sqlconn;cmd.CommandText = "Categoriestest3";cmd.CommandType = CommandType.StoredProcedure;// 创建参数IDataParameter[] parameters = { new SqlParameter("rval", SqlDbType.Int,4) };// 将参数类型设置为 返回值类型parameters[0].Direction = ParameterDirection.ReturnValue;// 添加参数cmd.Parameters.Add(parameters[0]);sqlconn.Open();// 执行存储过程并返回影响的行数Label1.Text = cmd.ExecuteNonQuery().ToString();sqlconn.Close();// 显示影响的行数和返回值Label1.Text += "-" + parameters[0].Value.ToString() ; |
存储过程Categoriestest3
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CREATE PROCEDURE Categoriestest3 AS insert into dbo.Categories (CategoryName,[Description],[Picture]) values ('test1','test1',null)return @@rowcount GO |
4. 有输入参数和输出参数的存储过程
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SqlConnection sqlconn = new SqlConnection(conn);SqlCommand cmd = new SqlCommand();cmd.Connection = sqlconn;cmd.CommandText = "Categoriestest4";cmd.CommandType = CommandType.StoredProcedure;// 创建参数IDataParameter[] parameters = { new SqlParameter("@Id", SqlDbType.Int,4) , new SqlParameter("@CategoryName", SqlDbType.NVarChar,15) , };// 设置参数类型parameters[0].Direction = ParameterDirection.Output; // 设置为输出参数parameters[1].Value = "testCategoryName";// 添加参数cmd.Parameters.Add(parameters[0]);cmd.Parameters.Add(parameters[1]);sqlconn.Open();// 执行存储过程并返回影响的行数Label1.Text = cmd.ExecuteNonQuery().ToString();sqlconn.Close();// 显示影响的行数和输出参数Label1.Text += "-" + parameters[0].Value.ToString() ; |
存储过程Categoriestest4
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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. 同时具有返回值、输入参数、输出参数的存储过程
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SqlConnection sqlconn = new SqlConnection(conn);SqlCommand cmd = new SqlCommand();cmd.Connection = sqlconn;cmd.CommandText = "Categoriestest5";cmd.CommandType = CommandType.StoredProcedure;// 创建参数IDataParameter[] parameters = { new SqlParameter("@Id", SqlDbType.Int,4) , new SqlParameter("@CategoryName", SqlDbType.NVarChar,15) , new SqlParameter("rval", SqlDbType.Int,4) };// 设置参数类型parameters[0].Direction = ParameterDirection.Output; // 设置为输出参数parameters[1].Value = "testCategoryName"; // 给输入参数赋值parameters[2].Direction = ParameterDirection.ReturnValue; // 设置为返回值// 添加参数cmd.Parameters.Add(parameters[0]);cmd.Parameters.Add(parameters[1]);cmd.Parameters.Add(parameters[2]);sqlconn.Open();// 执行存储过程并返回影响的行数Label1.Text = cmd.ExecuteNonQuery().ToString();sqlconn.Close();// 显示影响的行数，输出参数和返回值Label1.Text += "-" + parameters[0].Value.ToString() + "-" + parameters[2].Value.ToString(); |
存储过程Categoriestest5
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CREATE PROCEDURE Categoriestest5 @id int output, @CategoryName nvarchar(15) AS insert into dbo.Categories (CategoryName,[Description],[Picture]) values (@CategoryName,'test1',null)set @id = @@IDENTITYreturn @@rowcount GO |
6. 同时返回参数和记录集的存储过程
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SqlConnection sqlconn = new SqlConnection(conn);SqlCommand cmd = new SqlCommand();cmd.Connection = sqlconn;cmd.CommandText = "Categoriestest6";cmd.CommandType = CommandType.StoredProcedure;// 创建参数IDataParameter[] parameters = { new SqlParameter("@Id", SqlDbType.Int,4) , new SqlParameter("@CategoryName", SqlDbType.NVarChar,15) , new SqlParameter("rval", SqlDbType.Int,4) // 返回值 };// 设置参数类型parameters[0].Direction = ParameterDirection.Output; // 设置为输出参数parameters[1].Value = "testCategoryName"; // 给输入参数赋值parameters[2].Direction = ParameterDirection.ReturnValue; // 设置为返回值// 添加参数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datasetdp.Fill(ds);// 显示结果集GridView1.DataSource = ds.Tables[0];GridView1.DataBind();Label1.Text = "";// 显示输出参数和返回值Label1.Text += parameters[0].Value.ToString() + "-" + parameters[2].Value.ToString(); |
存储过程Categoriestest6
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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 Categoriesreturn @@rowcount GO |
7. 返回多个记录集的存储过程
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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datasetdp.Fill(ds);// 显示结果集1GridView1.DataSource = ds.Tables[0];GridView1.DataBind();// 显示结果集2GridView2.DataSource = ds.Tables[1];GridView2.DataBind(); |
存储过程Categoriestest7
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CREATE PROCEDURE Categoriestest7 AS select * from Categories select * from Categories GO |
希望本文所述对大家C#程序设计有所帮助。
