将第一个listview选择的项绑定到第二个listview [英] Bind first listview slected items to second listview

问题描述

我有第一个和第二个ListView，如图所示：示例



我填充了第一个ListView，使用此代码



这是我的Xaml代码

I have first and second ListView, as shown in the image: Example

I populated the first ListView, using this code

This is my Xaml Code

<listview x:name="ListBox_Category_Names" verticalalignment="Stretch" horizontalalignment="Left" xmlns:x="#unknown" Width="auto"  Height="300" SelectionMode="Single"  Grid.Column="0" Margin="0,0,10,0"                                   ScrollViewer.HorizontalScrollBarVisibility="Auto" ScrollViewer.VerticalScrollBarVisibility="Auto" SelectionChanged="ListBox_Category_Names_SelectionChanged">
<listview.view>
   <gridview>
      <gridviewcolumn header="Category Name" displaymemberbinding="{Binding Category_Names}" width="280" />
      <gridviewcolumn header="Amount " displaymemberbinding="{Binding Category_Amount, ConverterCulture=ig-NG, StringFormat=\{0:C\}}" width="130" />
   </gridview>
</listview.view>
</listview>


<listview x:name="ListBox_Selected_Category" verticalalignment="Stretch" horizontalalignment="Stretch" xmlns:x="#unknown" Width="auto"  Height="300" SelectionMode="Single"  Grid.Column="1" Margin="10,0,0,0" ScrollViewer.HorizontalScrollBarVisibility="Auto" ScrollViewer.VerticalScrollBarVisibility="Auto" ItemsSource="{Binding SelectedItem, ElementName=ListBox_Category_Names}">
<listview.view>
   <gridview>
      <gridviewcolumn header="Category Name" displaymemberbinding="{Binding Category_Names}" width="250" />
      <gridviewcolumn header="Amount">
         <gridviewcolumn.celltemplate>
            <datatemplate>
               <textbox x:name="txtBox_amount" text="{Binding Category_Amount, ConverterCulture=ig-NG, StringFormat=\{0:C\}}" width="200" height="35" />
            </datatemplate>
         </gridviewcolumn.celltemplate>
      </gridviewcolumn>
   </gridview>
</listview.view>
</listview>

这是加载第一个ListBox的代码

This is the Code thats Loads the First ListBox

ListBox_Category_Names.ItemsSource = CategoriesList.get_CategoryList();

不是MVVM

现在我卡住了因为我需要将第一个ListView选定项绑定到第二个ListView。拜托，我真的需要帮助，过去三（3）周一直坚持这一点。在此先感谢。



我尝试过：

Not MVVM
Now I'm stuck cause I need to bind the First ListView Selected Items to the Second ListView. Please, I really need help, been stuck with this for the past three (3) weeks. Thanks in advance.

What I have tried:

class CategoriesList
{
    public string Category_Names { get; set; }
    public double Category_Amount { get; set; }

    public static List<categorieslist> get_CategoryList()
    {
        try
        {
            SQLiteConnection con = new SQLiteConnection("  Data Source=system.sqlite; Version=3; Compress=True; ");
            con.Open();
            string query = " SELECT category_id, category_name, amount FROM acc_income_category WHERE deleted = 0 ORDER BY category_name ASC ";
            SQLiteCommand cmd = new SQLiteCommand(query, con);

            SQLiteDataReader dr = cmd.ExecuteReader();

            var categories = new List<categorieslist>();

            while (dr.Read())
            {
                CategoriesList cl = new CategoriesList();

                cl.Category_Names = dr.GetString(1);
                cl.Category_Amount = dr.GetDouble(2);

                categories.Add(cl);
            }

            con.Close();

            return categories;

        }
        catch (Exception ex)
        {
            System.Windows.MessageBox.Show(ex.Message);
            return null;
        }
    }

}

推荐答案

非常简单，只是参考以下代码，

Hi, Its very simple, just refer the following code,

List<CategoriesList> SelectedItemList = ListFirst.SelectedItems.Cast<CategoriesList>().ToList();
ListSecond.ItemsSource = SelectedItemList;

我的意思是， ListFirst 作为你的第一个ListView和 ListSecond 作为你的第二个ListView。

Here I meant, ListFirst as your first ListView and ListSecond as your second ListView.

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