SSIS读/写脚本任务中的变量

Question

我有一个名为Valint的变量，我需要在脚本任务中对其进行读/写操作，但它似乎不起作用：

public class scriptmain
inherits usercomponent

dim counter as integer
dim Valint as integer
.....


Public sub new()
counter = 0
end sub

public overrides sub input0_processintputrow(byval row as input0buffer)
Dim vars as IDTSvariables100 = nothing

Me.variableDispenser.lockforread("User::Valint")
Me.variableDispenser.GetVariables(vars)

counter = CType (vars("User:: Valint").Value, integer)
vars.Unlock()

counter +=1

Me.VariableDispenser.LockoneForWrite("User::Valint", vars)
vars("User::Valint").Value = counter
vars.Unlock()
End Sub

由于某种原因，我的输出始终为0

Answer 1

这是在数据流任务中，对吗？ 至少在processinputrow子例程期间，不能在脚本转换中修改变量。

幸运的是，看起来您正在执行的修改类型可以完成-只是在不同的子例程中。

我的唐纳德·法默（Donald Farmer）编写的SSIS脚本Beta版距我有一千英里，所以请原谅此代码的不精确性。 重要的是，您只能从PostExecute事件中写入用户变量。

public class scriptmain
inherits usercomponent

dim counter as integer
dim Valint as integer
.....


Public sub new()
counter = 0
end sub

public overrides sub input0_processintputrow(byval row as input0buffer)
    counter +=1
End Sub

Public overrides sub PostExecute()
    Dim vars as IDTSvariables100 = nothing

    Me.variableDispenser.lockforread("User::Valint")
    Me.variableDispenser.GetVariables(vars)

    counter = CType (vars("User:: Valint").Value, integer)
    vars.Unlock()
    Me.VariableDispenser.LockoneForWrite("User::Valint", vars)
    vars("User::Valint").Value = counter
    vars.Unlock()
End Sub