WPF中的SelectionChanged事件是否只能用于用户交互?

问题描述

我只想为用户交互/选择处理WPF DataGrid元素中的SelectionChanged事件，如果是由于绑定或其他设置值而跳过.知道如何确定用户交互是否更改了选择吗?还是其他任何可以完成类似任务的事件?

I would like to handled SelectionChanged event in WPF DataGrid element for user interaction/selection only and skip if it's due to binding or other set values. Any idea how I will determine if the Selection is changed by user interaction? Or any alternate event that would do similar task?

推荐答案

也许尝试将SelectionChanged事件与PreviewMouseDown事件结合在一起.当用户单击一行时，您设置了一些属性，然后在SelectionChanged事件处理程序中检查than属性是否已更改.

Maybe try combine SelectionChanged event with PreviewMouseDown event. When user click a row you set some property and in SelectionChanged event handler check if than property was changed.

示例代码XAML:

<DataGrid SelectionChanged="OnSelectionChanged" PreviewMouseDown="OnPreviewMouseDown">
        <!--some code-->          
</DataGrid>

后面的代码:

bool isUserInteraction;

private void OnSelectionChanged(object sender, SelectionChangedEventArgs e)
{
    if (isUserInteraction)
    {
        //some code

        isUserInteraction = false;
    }
}

private void OnPreviewMouseDown(object sender, MouseButtonEventArgs e)
{
    isUserInteraction = true;
}

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