[英]How do I clear specific columns in DataGrid?
我正在使用 WPF,通過 LinqToSql 連接到 SQL 數據庫。 我已經使用 ItemsSource 填充了 DataGrid。
我想通過按下按鈕清除我的 DataGrid 中的所有內容,除了前兩行(ID、名字和名字),當然還有標題。 我想(設置為 null 或 0)刪除的所有項目都是浮點數,但我找不到正確的邏輯來執行此操作。
public partial class Spisak : Microsoft.Office.Interop.Excel.Window
{
DiplomskiDataContext diplomski = new DiplomskiDataContext();
public Spisak()
{
InitializeComponent();
dataGridRadnici.ItemsSource = diplomski.Radniks.ToList();
}
}
這是我后面的代碼,這里是 Xaml 代碼:
<DataGrid HorizontalAlignment="Left" Name="dataGridRadnici" AutoGenerateColumns="False" Height="260" Margin="10,120,0,0" VerticalAlignment="Top" Width="550">
<DataGrid.Columns>
<DataGridTextColumn Header="Ime" Binding="{Binding Ime}"></DataGridTextColumn>
<DataGridTextColumn Header="Prezime" Binding="{Binding Prezime}"></DataGridTextColumn>
<DataGridTextColumn Header="BrSati" Binding="{Binding BrojSati, Converter={StaticResource ThreePlaceConverter}}"></DataGridTextColumn>
<DataGridTextColumn Header="Prekovremeni" Binding="{Binding BrojPrekovremenih, Converter={StaticResource ThreePlaceConverter}}"></DataGridTextColumn>
<DataGridTextColumn Header="Gorivo" Binding="{Binding BrojDana, Converter={StaticResource ThreePlaceConverter}}"></DataGridTextColumn>
<DataGridTextColumn Header="Bonus" Binding="{Binding Bonus}"></DataGridTextColumn>
<DataGridTextColumn Header="VracanjeDuga" Binding="{Binding VracanjeDuga}"></DataGridTextColumn>
<DataGridTextColumn Header="UkZarada" Binding="{Binding UkupnaPlata, Converter={StaticResource ThreePlaceConverter}}"></DataGridTextColumn>
<DataGridTextColumn Header="UkSaGorivom" Binding="{Binding UkupnoSaGorivom, Converter={StaticResource ThreePlaceConverter}}"></DataGridTextColumn>
</DataGrid.Columns>
<DataGrid.ContextMenu>
<ContextMenu>
<MenuItem Header="Izmeni" Click="MenuItem_Click"></MenuItem>
<MenuItem Header="Obrisi" Click="MenuItem_Click_1"></MenuItem>
</ContextMenu>
</DataGrid.ContextMenu>
</DataGrid>
將您希望能夠清空的列的類型從float
更改為Nullable<float>
( float?
),然后只需將屬性設置為null
:
var sourceList = dataGridRadnici.ItemsSource as List<Radnik>; //or whatever your data is called
foreach (var item in sourceList)
{
item.BrojPrekovremenih = null; // or 0
//set the other properties the same way...
}
您還需要實現INotifyPropertyChanged
接口並在數據 class 中引發屬性更改通知。
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