本文实例讲述了C#调用存储过程的方法。，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
