c#获取存储过程的 return返回值和output输出参数值 -尊龙游戏旗舰厅官网
一、不用sqlhelper.cs等帮助类
1.获取return返回值
程序代码
存储过程
create procedure mysql
@a int,
@b int
as
return @a @b
go
sqlconnection conn = new sqlconnection(configurationmanager.connectionstrings["localsqlserver"].tostring());
conn.open();
sqlcommand mycommand = new sqlcommand("mysql", conn);
mycommand.commandtype = commandtype.storedprocedure;
mycommand.parameters.add(new sqlparameter("@a", sqldbtype.int));
mycommand.parameters["@a"].value = 10;
mycommand.parameters.add(new sqlparameter("@b", sqldbtype.int));
mycommand.parameters["@b"].value = 20;
mycommand.parameters.add(new sqlparameter("@return", sqldbtype.int));
mycommand.parameters["@return"].direction = parameterdirection.returnvalue;
mycommand.executenonquery();
response.write(mycommand.parameters["@return"].value.tostring());
2.获取output输出参数值
程序代码
存储过程
create procedure mysql
@a int,
@b int,
@c int output
as
set @c = @a @b
go
sqlconnection conn = new sqlconnection(configurationmanager.connectionstrings["localsqlserver"].tostring());
conn.open();
sqlcommand mycommand = new sqlcommand("mysql", conn);
mycommand.commandtype = commandtype.storedprocedure;
mycommand.parameters.add(new sqlparameter("@a", sqldbtype.int));
mycommand.parameters["@a"].value = 20;
mycommand.parameters.add(new sqlparameter("@b", sqldbtype.int));
mycommand.parameters["@b"].value = 20;
mycommand.parameters.add(new sqlparameter("@c", sqldbtype.int));
mycommand.parameters["@c"].direction = parameterdirection.output;
mycommand.executenonquery();
response.write(mycommand.parameters["@c"].value.tostring());
---------------------------------------------------------------------------------------------------------------
以下代码转自网络：
c#接收存储过程返回值:
public static int user_add(user us)
{
int iret;
sqlconnection conn = new sqlconnection(conn_str);
sqlcommand cmd = new sqlcommand("user_add", conn);
cmd.commandtype = commandtype.storedprocedure;
cmd.parameters.addwithvalue("@uname", us.uname);
cmd.parameters.addwithvalue("@upass", us.upass);
cmd.parameters.addwithvalue("@passquestion", us.passquestion);
cmd.parameters.addwithvalue("@passkey", us.passkey);
cmd.parameters.addwithvalue("@email", us.email);
cmd.parameters.addwithvalue("@rname", us.rname);
cmd.parameters.addwithvalue("@area", us.area);
cmd.parameters.addwithvalue("@address", us.address);
cmd.parameters.addwithvalue("@zipcodes", us.zipcodes);
cmd.parameters.addwithvalue("@phone", us.phone);
cmd.parameters.addwithvalue("@qq", us.qq);
cmd.parameters.add("@return_value", "").direction = parameterdirection.returnvalue;
try
{
conn.open();
cmd.executenonquery();
iret = (int)cmd.parameters["@return_value"].value;
}
catch (sqlexception ex)
{
throw ex;
}
finally
{
conn.close();
}
return iret;
}
c#接收存储过程输出参数:
public static decimal cart_useramount(int uid)
{
decimal iret;
sqlconnection conn = new sqlconnection(conn_str);
sqlcommand cmd = new sqlcommand("cart_useramount", conn);
cmd.commandtype = commandtype.storedprocedure;
cmd.parameters.addwithvalue("@uid", uid);
cmd.parameters.add("@amount", sqldbtype.decimal).direction=parameterdirection.output;
try
{
conn.open();
cmd.executenonquery();
iret = (decimal)cmd.parameters["@amount"].value;
}
catch (sqlexception ex)
{
throw ex;
}
二、用sqlhelper.cs等帮助类，其思想一样
如：（贴出部分代码）
string readercode = txt_reader_code.text;
string bookcode = txt_book_code.text;
decimal money = convert.todecimal(txt_price.text);
datetime borrowdate = convert.todatetime(datetime.now.toshortdatestring());
datatable table = new dbutility.booktype().gettablebybookbarcode(bookcode);
double borrowday;
double getday = 0d;
if (table != null && table.rows.count > 0)
{
if (double.tryparse(table.rows[0]["borrowday"].tostring(), out borrowday))
{
getday = borrowday;
}
}
else
{
pub.util.alertpostback(page, "得到图书借阅天数失败");
return;
}
datetime returndate = convert.todatetime(datetime.now.adddays(getday).toshortdatestring());
string readername = txt_name.text.trim();
string bookname = txt_book_name.text.trim();
sqlparameter[] parameters = {
new sqlparameter("@readerbarcode",sqldbtype.varchar),
new sqlparameter("@bookbarcode",sqldbtype.varchar),
new sqlparameter("@hire",sqldbtype.money),
new sqlparameter("@borrowdate",sqldbtype.datetime),
new sqlparameter("@returndate",sqldbtype.datetime),
new sqlparameter("@readername",sqldbtype.varchar),
new sqlparameter("@bookname",sqldbtype.varchar),
new sqlparameter("@return",sqldbtype.int) //添加一个返回参数
};
parameters[0].value = readercode;
parameters[1].value = bookcode;
parameters[2].value = money;
parameters[3].value = borrowdate;
parameters[4].value = returndate;
parameters[5].value = readername;
parameters[6].value = bookname;
parameters[7].direction = parameterdirection.returnvalue; //声明此参数是返回类型
dbutility.sqlhelper.executenonquery(dbutility.sqlhelper.bookconn, commandtype.storedprocedure, "p_bookborrow", parameters);
int num = convert.toint32(parameters[7].value.tostring());//提取存储过程返回参数的值,成功为0，不成功为-1
if (num == 0)
{ pub.util.alertpostback(page, "借阅成功");
}
else
pub.util.alertpostback(page, "借阅失败");
存储过程
create procedure p_bookborrow(@readerbarcode varchar(30),@bookbarcode varchar(30),@hire money,@borrowdate datetime,@returndate datetime,@bookname varchar(30),@readername varchar(20))
as
begin tran
insert into t_reader_book values(@readerbarcode,@bookbarcode,@borrowdate,@returndate,@bookname,@readername)
if(@@error<>0)
begin
rollback tran
return -1
end
update t_readerinfo set borrownum=borrownum 1,[money]=[money]-@hire where readerbarcode = @readerbarcode
if(@@error<>0)
begin
rollback tran
return -1
end
update t_bookinfo set stock=stock-1 where bookbarcode =@bookbarcode
if(@@error<>0)
begin
rollback tran
return -1
end
insert into logs values(getdate(),'条形码号为：' @readerbarcode '的读者，借阅了图书编号为：' @bookbarcode '的书籍')
if(@@error<>0)
begin
rollback tran
return -1
end
commit tran
if(@@error<>0)
return -1
else
return 0
go
转载于:https://www.cnblogs.com/xsq521/p/5509531.html
总结
以上是尊龙游戏旗舰厅官网为你收集整理的c#获取存储过程的 return返回值和output输出参数值的全部内容，希望文章能够帮你解决所遇到的问题。
- 上一篇：
- 下一篇：