Datagridview行绘画表现异常 [英] Datagridview row painting behaves abnormally

问题描述

我的表单上有一个DataGridView，它是简单的.net winform控件（不是自定义的）。

就在网格上方，我有一个Combobox控件。



Grid填充了一些绑定到BindingSource的数据。



当用户展开组合框时，并选择一个项目，可见的组合框列表消失。此时，组合框列表的快照仍保留在DataGridView的顶行上。



我不知道这些信息是否足以描述该问题。我没有找到附加表单快照的选项，因此问题会更加明确。如果codeproject上有任何这样的选项，请告诉我，我会上传快照。



此外，它在一小时前完美运行。



我尝试过：



1.尝试调试DataGridView的绘画事件，但是发现没有问题。

2.将double buffered设置为true，但没有帮助。

3.重置附加到datagridview的绑定源，再次没有帮助。

I have a DataGridView on my form which is plain .net winform control (not customized).
Just above the grid I have a Combobox control.

Grid is populated with some data bound to a BindingSource.

When user expand the combo-box, and selects an item, the visible combo-box list disappears. At this point, a snapshot of combo-box list remains painted on top row in DataGridView.

I don't know if this information is enough to describe the issue. I am not finding an option to attach snapshots of the form, so that problem would be more clear. If any such option is available on codeproject, please let me know, I will upload the snaps.

Also, it was working perfectly just an hour ago.

What I have tried:

1. Tried debugging DataGridView's painting event, but found no issues.
2. Set double buffered to true, but no help.
3. Reset binding source attached to datagridview, again no help.

推荐答案

检查你的DGV的各种油漆事件处理程序 - 我不知道你正在处理哪些，但是有很多候选人。



除非油漆处理程序中有错误，否则我从未见过DGV乱搞和外部控制。

Check the various paint event handlers for your DGV - I have no idea which ones you are handling, but there are quite a few candidates.

I've never seen a DGV messed up by and external control unless there is a mistake in a paint handler.

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