如何使用backgroundworker在不同的表单上更新listview [英] How to update listview on a different form using backgroundworker

问题描述

您好，



我的后台工作者从txt文件数据库中读取数据，并将数据放在主窗体上的列表视图中。列表视图中没有出现任何内容，我证明数据已经发布但由于线程错误等原因未写入，但我不知道如何使其工作。



-Rixterz

解决方案

除了创建它们的线程之外，您无法访问UI元素：UI线程。当你尝试时，你得到一个跨线程异常 - 如你所见。



幸运的是它很容易修复：只需隐藏 [ ^ ]来自后台工作程序的控件，它会将执行移动到UI线程上。

Hello,

My backgroundworker reads from a txt file database and should put the data in a listview on the main form. Nothing came up in the listview, and I proved that data was going to it but was not written due to threading errors and such, but I don't know how to make it work.

-Rixterz

解决方案

You can't access UI elements except from the thread on which they were created: the UI thread. When you try, you get a cross thread exception - as you have seen.

Fortunately it's simple to fix: just Invoke[^] the control from the background worker, and it will move the execution onto the UI thread for you.

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