使用taskscheduler 1.0 dll获取计划任务的状态 [英] To Get status of Schedule Tasks using taskscheduler 1.0 dll

问题描述

大家好，

我正在使用TaskScheduler DLL v1.0.4525.29236使用asp.net应用程序框架1.1，语言VB.net获取计划作业属性，例如staus，Nextrun，Lastrun等.
我在具有Windows Server 2008 R2(64位)操作系统和IIS v7.5的测试服务器和OAT服务器上部署了代码.
当我将应用程序池更改为ASP.NET 1.1时，它可以在测试服务器上运行
但即使我将IIS配置为与测试服务器相同，也无法在OAT服务器上工作.
它抛出错误msg对象引用未设置为对象的实例"

检查以下代码

Hi All,

I am using TaskScheduler DLL v1.0.4525.29236 to get scheduled jobs properties i.e. staus, Nextrun, Lastrun etc. using asp.net application framework 1.1, language VB.net.

i deployed code on our test server and OAT server which has windows server 2008 R2(64 bit) operating system and IIS v7.5.
It works on test server when i changed application pool as ASP.NET 1.1
but not working on OAT server even i configured IIS same as test server.
it is throwing error msg "object reference not set to an instance of an object"

Check below code

''obejt created
Private tsksch As TaskScheduler.Scheduler

''assign machine name from which we need to read tasks/jobs
tsksch = New TaskScheduler.Scheduler("//" + System.Environment.MachineName())

jobstatus = tsksch.Tasks(jobname).Status.ToString() ''at this line i am getting error 
jobnextrun = Convert.ToString(tsksch.Tasks(jobname).NextRunTime)
joblastrun = Convert.ToString(tsksch.Tasks(jobname).MostRecentRunTime)
strFlags = Convert.ToString(tsksch.Tasks(jobname).Flags)
strExitcode = Convert.ToString(tsksch.Tasks(jobname).ExitCode)

请帮帮我.
感谢您的帮助.

问候，
Sanjay Gade

please help me out.
your help is appreciated.

Regards,
Sanjay Gade

推荐答案

对象引用未设置为对象的实例
当您尝试使用属性或调用对象的方法为null时，会发生此错误.更多详细信息:此处 [

Object reference not set to an instance of an object
This error happens when you try to use a property or call a method of an object that is null. More details: here[^]

Based on what you report,

jobstatus = tsksch.Tasks(jobname).Status.ToString() //at this line i am getting error 

这仅意味着以下任何一项:
1. tsksch是null-未能找到创建对象的调度程序
2. tsksch.Tasks(jobname)是null-未能通过作业名称中提到的名称在调度程序中找到任何任务

找到它，然后处理导致它在您的服务器上发生的根本原因.看看是否安排正确了吗?调度程序可访问?一些权限问题?

this simply means either of the following:
1. tsksch was null - failed to find the scheduler to create object
2. tsksch.Tasks(jobname) was null - failed to find any task in scheduler by name mentioned in jobname

find it, and then handle the core reason on why it happened on your server. See if correctly scheduled or not? Scheduler accessible? Some permissions issue?

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