如何绑定列表中的文本框？

Question

我只需要绑定文本框。 我创建了一个上一个和下一个按钮，此按钮有效，但文本框上没有任何内容。 我怎么了 我如何从列表中获得物品？

从数据库读取：

   void read()
    {
        using (var nwe = new NORTHWNDEntities())
        {

            var objctx = (nwe as IObjectContextAdapter).ObjectContext;
            ObjectQuery<Employee> query = new ObjectQuery<Employee>(
                "SELECT VALUE n from NORTHWNDEntities.Employees as n", objctx);
            List<Employee> results = query.ToList();


            cursor = (CollectionView)CollectionViewSource.GetDefaultView(results);

        }
    }

    private void countposition()
    {
        labelRead.Content = "Read " + (cursor.CurrentPosition + 1) + " to " + cursor.Count; 
    }
private void buttonNext_Click(object sender, RoutedEventArgs e)
    {
        if(cursor.CurrentPosition < cursor.Count -1)
        {
            cursor.MoveCurrentToNext();
            countposition();
        }
        else
        {
            MessageBox.Show("No more data");
        }
    }

    private void buttonPrevious_Click(object sender, RoutedEventArgs e)
    {

         if (cursor.CurrentPosition > 0)
         {
            cursor.MoveCurrentToPrevious();
            countposition();

         }
         else
         {
             MessageBox.Show("No more data");
         }

    }

绑定数据的UI代码：

<TextBox x:Name="textBoxID" HorizontalAlignment="Left" Height="23" Margin="163,79,0,0" TextWrapping="Wrap" Text="{Binding Path=EmployeeID}" IsReadOnly="True" VerticalAlignment="Top" Width="87"/>
    <Label x:Name="labelFirstNAme" Content="First Name" HorizontalAlignment="Left" Margin="52,157,0,0" VerticalAlignment="Top"/>
    <TextBox x:Name="textBoxFirstName" HorizontalAlignment="Left" Height="23" Margin="163,157,0,0" TextWrapping="Wrap" Text="{Binding Path=FirstName}" VerticalAlignment="Top" Width="145"/>
    <Label x:Name="labelLastName" Content="Last Name" HorizontalAlignment="Left" Margin="52,224,0,0" VerticalAlignment="Top" Width="67"/>
    <TextBox x:Name="textBoxLastName" HorizontalAlignment="Left" Height="23" Margin="163,224,0,0" TextWrapping="Wrap" Text="{Binding Path=LastName}" VerticalAlignment="Top" Width="145"/>
    <Label x:Name="labelBirthDate" Content="Birth Date" HorizontalAlignment="Left" Margin="52,307,0,0" VerticalAlignment="Top" RenderTransformOrigin="-0.289,0.462" Width="67"/>
    <TextBox x:Name="textBoxBirthDate" HorizontalAlignment="Left" Height="23" Margin="163,310,0,0" TextWrapping="Wrap" Text="{Binding Path=BirthDate}" VerticalAlignment="Top" Width="145"/>

Answer 1

抱歉，我喝了一些啤酒，但TextBox只接受一个值，通常为id .est =“。Text =” oneStringInstanceOnly“。 您想将List <>（具有多个值/对象/字符串/类）绑定到通常接受一个（通常是字符串）值的TextBox，这就是为什么您不能将包含多个值的List绑定到TexBox的原因接受一个值。 TextBox不是接受多个值/数据表的DataGridView或ListBox。 甚至可以从列表myTextBox =（myList！= null && myList.Count！= 0）中分配第一个值给TexBox？myList [0] .ToString（）：“ NoMoreValues”;