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： CREATE PROCEDURE [dbo].[GetNameById] @studentid varchar(8), @studentname nvarchar(50) OUTPUTASBEGIN SELECT @studentname=studentname FROM s
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：
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"); //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);
}
}
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
#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
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dataset dp.Fill(ds); // 以下是显示效果 GridView1.DataSource = ds; GridView1.DataBind();
存储过程Categoriestest1
CREATE PROCEDURE Categoriestest1 AS select * from Categories GO
2. 没有输入输出的存储过程
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
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
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
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
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
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
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
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. 同时返回参数和记录集的存储过程
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dataset
dp.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
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. 返回多个记录集的存储过程
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); // 显示结果集1 GridView1.DataSource = ds.Tables[0]; GridView1.DataBind(); // 显示结果集2 GridView2.DataSource = ds.Tables[1]; GridView2.DataBind();
存储过程Categoriestest7
CREATE PROCEDURE Categoriestest7 AS select * from Categories select * from Categories GO
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