提高WPF DataGrid的性能 [英] Improve WPF DataGrid performance

问题描述

在我的 .NET 3.5 WPF 应用程序，我有一个 WPF 的DataGrid 将与500列和50行进行填充。
应用程序的性能是非常的滚动非常差，或者当我做 DataGrid.Items.Refresh（）或选择行。

In my .NET 3.5 WPF Application, I have a WPF DataGrid which will be populated with 500 columns and 50 rows. The performance of App is very very poor in scrolling, or when I do DataGrid.Items.Refresh() or in selecting rows.

其实应用程序将花费大约20秒更新布局。 Layout_Updated（）活动将于20秒后触发。

Actually App will take around 20 sec to Update Layout. Layout_Updated() event will trigger after 20 sec.

如果我减少列至50或更小，应用将是非常敏感。按我的发现性能直接关系到列数。

If I reduce the columns to 50 or less, App will be very responsive. As per my findings performance is directly related to column count.

我如何改善的DataGrid 性能？

推荐答案

有几个选项，你可以打开，以帮助您在您的的DataGrid 对象

There are a few options you can turn on to help you on your DataGrid object

EnableColumnVirtualization = true
EnableRowVirtualization = true

这两个是主要的，我认为可能的帮助。接下来请尝试将结合异步

These two are the main ones I think might help. Next try making your binding async

ItemsSource="{Binding MyStuff, IsAsync=True}"

最后，我听说设置最大高度和宽度可以帮助，即使它的最大屏幕尺寸上面，但我没有发现有不同的自己（索赔曾与自动尺寸测量做）

And lastly, I've heard that setting a maximum height and width can help even if it above the max screen size, but I didn't notice a difference myself (claim had to do with auto size measuring)

MaxWidth="2560"
MaxHeight="1600"

也从来没有把一个的DataGrid 在的ScrollViewer ，因为你会失去基本的虚拟化。让我知道如果这有助于！

Also never put a DataGrid in a ScrollViewer, because you will essentially lose virtualization. Let me know if this helps!

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