C# WPF：DataGrid，删除选定行
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C# WPF: DataGrid, Delete selected row
提问by Pop Pilli
I created a DataGrid which I linked to a DataBase (Table). My question is how can I delete a selected row (using btn_click) from the DataGrid and also delete the same data from the DataBase (Table).
我创建了一个链接到数据库（表）的 DataGrid。我的问题是如何从 DataGrid 中删除选定的行（使用 btn_click）并从数据库（表）中删除相同的数据。
Thanks in advance!
提前致谢！
回答by Martin
You can access the currently selected item of a DataGridusing the SelectedItemproperty.
您可以DataGrid使用该SelectedItem属性访问 a 的当前选定项。
Your can then call the Removemethod to remove the item from the DataGrid
然后您可以调用该Remove方法从DataGrid
var selectedItem = myDataGrid.SelectedItem;
if (selectedItem != null)
{
myDataGrid.Items.Remove(selectedItem);
}
After the first line you need to extract the information (e.g. some Id) from the item in order to delete it in the database.
Usually you cast the SelectedItemto the object you used to bind to the grid.
在第一行之后，您需要从项目中提取信息（例如某些 Id），以便在数据库中将其删除。通常，您将 投射SelectedItem到用于绑定到网格的对象。
See also thisresponse.
另请参阅此回复。
