我有一個表單,用戶輸入有關新庫存項目(id,title,price,date等)的數據。輸入的數據保存到一個集合中,然後在列表視圖中重新顯示。無法從列表視圖中的選定項目獲取價值WPF
我得到一個「指定的轉換無效」,指向「key =(int)lvwInventory.SelectedItems [0];」當試圖提取選定的值。我試圖將ID取出並用它打開該項目的編輯窗口。
我在這裏做錯了什麼?問題
列表視圖
<ListView Height="249" HorizontalAlignment="Left" Margin="27,28,0,0" Name="lvwInventory" VerticalAlignment="Top" Width="384" ItemsSource="{Binding col}">
<ListView.View>
<GridView>
<GridViewColumn Header="Type" DisplayMemberBinding="{Binding Type}" />
<GridViewColumn Header="Title" DisplayMemberBinding="{Binding Title}" />
<GridViewColumn Header="Price" DisplayMemberBinding="{Binding Price}" />
<GridViewColumn Header="Date Added" DisplayMemberBinding="{Binding Date}" />
</GridView>
</ListView.View>
</ListView>
stockobject類
public class StockObject
{
// create stock object properties
public int ID { get; set; }
public string Title { get; set; }
public DateTime Date { get; set; }
public double Price { get; set; }
public char Type { get; set; }
事件正試圖獲取價值選擇的項目
private void btnViewItem_Click(object sender, RoutedEventArgs e)
{
int key;
if (lvwInventory.SelectedIndex == -1) return;
key = (int)lvwInventory.SelectedItems[0];
StockObject s = col[key];
bookDialog.View(s);
}
感謝這並獲得成功。 – Jerry 2010-11-09 21:17:25