我是在asp.net上的新手，后面有vb.code

我正在尝试从sql获取价值

我的密码

Dim apps As New MyApps
apps.OpenConnection()

Dim esql As New SqlCommand
esql.Connection = apps.oConn

esql.CommandText = "cekdatauploads"
esql.Parameters.Add("@value", SqlDbType.Int, 2)

esql.ExecuteNonQuery()
esql.Parameters("@value").Direction = ParameterDirection.Output

Dim nilai As Integer = esql.Parameters("@value").Value

apps.CloseConnection()

错误是

The parameterized query '(@value int)cekdatauploads' expects the parameter '@value', which was not supplied.

我已经尝试执行商店程序

declare @p int
exec [cekdatauploads] @p output
print @p

并返回0非空值。

提前致谢！