找到List项的索引 - WP7

时间:2013-07-01 13:58:45

标签: windows-phone-7 listbox

我的列表框包含垂直列出的按钮,下面给出了相关数据;

<ListBox Name="CTransactionList" Margin="0,0,0,0"   >
                    <ListBox.ItemTemplate >
                        <DataTemplate>
                            <Button Width="400" Height="200" Background="#6A040B2E" Click="completetransact">
                                <Button.Content >
                                    <StackPanel Orientation="Horizontal" Height="200" Width="400">
                                        <Image Source="{Binding Type1}" Width="80" Height="80" VerticalAlignment="Top" Margin="0,40,0,0"/>
                                        <StackPanel Orientation="Vertical" Height="200">
                                            <StackPanel Orientation="Horizontal" Height="30">
                                                <TextBlock Width="100" FontSize="22" Text="Name:" Height="30"/>
                                                <TextBlock Width="200" FontSize="22" Text="{Binding Date1}" Height="30"/>

                                            </StackPanel>
                                            <StackPanel Orientation="Horizontal" Height="30">
                                                <TextBlock Width="100" FontSize="22" Text="Difficulty:" Height="30"/>
                                                <TextBlock Width="200" FontSize="22" Text="{Binding Amount1}" Height="30"/>
                                            </StackPanel>
                                            <StackPanel Orientation="Horizontal" Height="30">
                                                <TextBlock Width="110" FontSize="22" Text="TotalTime:" Height="30"/>
                                                <TextBlock Width="200" FontSize="22" Text="{Binding Time1}" Height="30"/>
                                            </StackPanel>
                                            <StackPanel Orientation="Horizontal" Height="30">
                                                <TextBlock Width="100" FontSize="22" Text="Distance:" Height="30"/>
                                                <TextBlock Width="200" FontSize="22" Text="{Binding Dis1}" Height="30"/>
                                            </StackPanel>
                                            <StackPanel Orientation="Horizontal" Height="65">

                                                <TextBlock Width="290" FontSize="14" Text="{Binding Def1}" Height="65" TextWrapping="Wrap" FontStyle="Italic"/>
                                            </StackPanel>
                                        </StackPanel>
                                    </StackPanel>
                                </Button.Content>
                            </Button>
                        </DataTemplate>
                    </ListBox.ItemTemplate>

                </ListBox>

我正在用这些类绑定数据;

[DataContract]
    public class CTransaction
    {
        [DataMember]
        public String Date1 { get; set; }
        [DataMember]
        public String Amount1 { get; set; }
        [DataMember]
        public String Type1 { get; set; }
        [DataMember]
        public String Time1 { get; set; }
        [DataMember]
        public String Dis1 { get; set; }
        [DataMember]
        public String Def1 { get; set; }
        [DataMember]
        public String Cdate1 { get; set; }
        [DataMember]
        public String Strpt1 { get; set; }
        [DataMember]
        public String Endpt1 { get; set; }
        [DataMember]
        public int Index1 { get; set; }

        public CTransaction(String date1, String amount1, String type1, String time1, String dis1, String def1, String cdate1, String strpt1, String endpt1,int index1)
        {
            this.Date1 = date1;
            this.Amount1 = amount1;
            this.Time1 = time1;
            this.Dis1 = dis1;
            this.Def1 = def1;
            this.Cdate1 = cdate1;
            this.Strpt1 = strpt1;
            this.Endpt1 = endpt1;
            this.Index1 = index1;
            switch (type1)
            {
                case "FR":
                    this.Type1 = "Images/a.png";
                    break;

                case "TA":
                    this.Type1 = "Images/b.png";
                    break;

                case "DA":
                    this.Type1 = "Images/c.png";
                    break;

                case "CC":
                    this.Type1 = "Images/mount.png";
                    break;
            }
        }
    }

如上所示,我有一个名为Index1的数据绑定,它使用任意整数索引该按钮。我希望用户使用此代码删除指定的索引按钮;

ctransactionList.RemoveAt("index comes here");

我的确想要删除点击的按钮,(如果点击第二个按钮,则删除第二个按钮)。我试图在其中嵌入一些索引(即Index1)来删除它,我找不到任何可能的方法;我也失败了。

这是我尝试的方式;

上面给出的删除代码仅根据整个列表项计数删除索引项。我的意思是,例如,第一个元素总是具有'0'索引。它不关心我的Index1数据。(我可以使用selectedButton作为发送方法检索Index1数据)我希望我可以删除包含用户指定的Index1数据的按钮。

我该怎么做?

提前致谢。 (Windows Phone 7)

1 个答案:

答案 0 :(得分:2)

您可以通过为按钮添加点击事件处理程序来执行此操作:

private void Button_Click(object sender, RoutedEventArgs e)
{
    var button = sender as Button;
    var item = button.DataContext as CTransaction;
    if (item != null)
    {
      ctransactionList.Remove(item);
    }
}

ctransactionList应该是一个ObservableCollection。