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22-09-2019 - |
题
问题是,每当右键单击网格的行时,所选的项目为null。当右键单击任何行时,我如何将网格的行选择?
谢谢Jamal
解决方案
我认为解决方案可能有问题。每次加载一行时,都会添加一个事件处理程序,因此,如果该行重复使用,则可以累积事件处理程序。我建议在行卸载时删除活动处理程序。这是我建议的代码:
private void dg_LoadingRow(object sender, DataGridRowEventArgs e)
{
e.Row.MouseRightButtonDown += new MouseButtonEventHandler(Row_MouseRightButtonDown);
}
void Row_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
dg.SelectedItem = ((sender) as DataGridRow).DataContext;
}
// new portion
private void dg_UnloadingRow(object sender, DataGridRowEventArgs e)
{
e.Row.MouseRightButtonDown -= new MouseButtonEventHandler(Row_MouseRightButtonDown);
}
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