问题描述
我有以下代码:
object[] parameters =
{
new SqlParameter("@val1", val1),
new SqlParameter("@val2", val2),
new SqlParameter
{
ParameterName = "@retVal",
SqlDbType = SqlDbType.Int,
Direction = ParameterDirection.ReturnValue,
Value = -1
}
};
await context.Database.ExecuteSqlCommandAsync("EXEC @retVal = Example_SP @val1, @val2", parameters);
我使用的 SP 很好,可以在 SQL MS 中返回一个值.但是当我使用 EF 执行它时,我被告知必须声明标量变量 @retVal".这不是我的 SqlParameter 做的吗??
The SP I'm using is fine and returns a value in SQL MS fine. But when I execute it using EF I am told I 'must declare the scalar variable @retVal'. Isn't that what my SqlParameter does??
我已经尝试从参数中删除@"符号,正如一些人在其他地方所建议的那样,但据我了解,@"符号是可选的,无论如何都没有区别.
I've tried removing the '@' sign form the parameters, as some have suggested elsewhere, but as I understand it the '@' sign is optional and makes no difference anyway.
如何使用 ExecuteSqlCommandAsync 从 SP 获取返回值而不导致错误?
How do I get the return value from the SP without causing errors, using ExecuteSqlCommandAsync?
谢谢!
推荐答案
你需要使用 ParameterDirection.Output
而不是 ParameterDirection.ReturnValue
.
You need to use ParameterDirection.Output
instead of ParameterDirection.ReturnValue
.
这篇关于EF6 - ExecuteSqlCommandAsync - 获取返回参数(声明标量变量错误)的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持编程学习网!