在Silverlight中怎样将返回的对象绑定到模版列上

[zhentian]

我从数据库中返回一个结果集(学历信息)，类型为ObservableCollection<DegreeData>,怎么将它绑定到模版列ComboBox上

[sky-defender]

Combobox.Items.add(e.result[i].Name)

[sky-defender]

void client_GetDataBaseCompleted(object sender, GetDataBaseCompletedEventArgs e)
        {
            for (int i = 0; i < e.Result.Count; i++)
            {
                cmbDataBaseList.Items.Add(e.Result[i].ToString());
            }
            
        }

[rt112000]

你好像发了3个这方面的帖子。。还是接着你第一个贴的例子，先不要谈combobox，datagrid中部门列binding的是一个int 部门ID，还是部门object? 如果是部门object的话，我见过的办法就是修改员工class, 在员工class里加个所有部门的List， 名字为AllDeparments。 这样你在datagrid中的就可以写<combobox itemssource="{binding AllDepartments}" selecteditem="{binding Department, mode=twoway"}.

[rt112000]

如果数据中只记录部门id的话，可以用combobox绑定一个所有部门名字的List<string>， selecteditem的绑定中加个converter做部门ID和部门名字转化。。
代码中假定只有2个部门：
ID Name
0 “A”
1 “B”

<UserControl x:Class="DataBindingSimple.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:sys="clr-namespace:System;assembly=mscorlib"
    xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"
    mc:Ignorable="d"
    xmlns:local="clr-namespace:DataBindingSimple"
    d:DesignHeight="300" d:DesignWidth="400" xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data">
  <UserControl.Resources>
    <local:DepartmentList x:Key="departmentList" />
    <local:DepartmentIDToDepartmentConverter x:Key="converter" />
  </UserControl.Resources>
  <StackPanel x:Name="LayoutRoot" Background="White">
    <data:DataGrid x:Name="dataGrid1" AutoGenerateColumns="False">
      <data:DataGrid.Columns>
        <data:DataGridTextColumn Header="Employ ID" Binding="{Binding EmpID}" />
        <data:DataGridTextColumn Header="Name" Binding="{Binding EmpName}" />
        <data:DataGridTemplateColumn Header="Department">
          <data:DataGridTemplateColumn.CellTemplate>
            <DataTemplate>
              <TextBlock Text="{Binding EmpDepID, Converter={StaticResource converter}}" />
            </DataTemplate>
          </data:DataGridTemplateColumn.CellTemplate>
          <data:DataGridTemplateColumn.CellEditingTemplate>
            <DataTemplate>
              <ComboBox ItemsSource="{StaticResource departmentList}"
                        SelectedItem="{Binding EmpDepID, Mode=TwoWay, Converter={StaticResource converter}}" />
            </DataTemplate>
          </data:DataGridTemplateColumn.CellEditingTemplate>
        </data:DataGridTemplateColumn>
      </data:DataGrid.Columns>
    </data:DataGrid>
  </StackPanel>
</UserControl>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Collections.ObjectModel;
using System.Windows.Data;

namespace DataBindingSimple
{
    public partial class MainPage : UserControl
    {

        List<Employee> employeeList;
        
        public MainPage()
        {
            InitializeComponent();

            employeeList = new List<Employee>()
            {
                new Employee{EmpID=0, EmpName="000", EmpDepID=0},
                new Employee{EmpID=1, EmpName="111", EmpDepID=1},
                new Employee{EmpID=2, EmpName="222", EmpDepID=0},
                new Employee{EmpID=3, EmpName="333", EmpDepID=1},
                new Employee{EmpID=4, EmpName="444", EmpDepID=1},
                new Employee{EmpID=5, EmpName="555", EmpDepID=0}
            };
            
            dataGrid1.ItemsSource = employeeList;
       }
    }

    public class Employee
    {
        public int EmpID { get; set; }
        public string EmpName { get; set; }
        public int EmpDepID { get; set; }
    }

    public class Department
    {
        public int DepID { get; set; }
        public string DepName { get; set; }
    }

    //used as static reource on mainpage, bound to ComboBox in DataTemplate
    public class DepartmentList : List<string>
    {
        public DepartmentList()
        {
            Add("A");
            Add("B");
        }
    }

    //This class maintains department ID to Name mapping.
    public class DepartmentIDToDepartmentConverter : IValueConverter
    {
        //department ID => Name
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            switch ((int)value)
            {
                case 0: return "A";
                case 1: return "B";
                default: return "NA";
            }

        }
        //Department Name => ID
        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            switch ((string)value)
            {
                case "A": return 0;
                case "B": return 1;
                default: return -1;
            }
        }
    }

}

[websco]

[Quote=引用 4 楼 rt112000 的回复:]
如果数据中只记录部门id的话，可以用combobox绑定一个所有部门名字的List<string>， selecteditem的绑定中加个converter做部门ID和部门名字转化。。
代码中假定只有2个部门：
ID Name
0 “A”
1 “B”

XML code

<UserControl x:Class="DataBindingSimple.MainPage"
……
[/Quote]

搞一个SelectedItem的Converter（硬编码的味道）还不如派生ComboBox，加上 SelectedValue 依赖项属性，一了百了。

[NoQinQin]

怎样动态绑定xml数据？