WPF combobox数据绑定和数据获取

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搭建WPF界面的时候，想用combobox构建一个下拉菜单，搜索的时候看到大多数都是大段代码，逻辑顺序不是很详细，摸索了大概，记录一下方便来者。

拖入combobox控件，控件的属性可以在xmal代码中更改，这里只是用了默认的代码，combobox的绑定在.cs代码中进行。

 <Label Content="Label" Height="" HorizontalAlignment="Left" Margin="12,239,0,0" Name="label8" VerticalAlignment="Top" />
        <ComboBox Height="" HorizontalAlignment="Left" Margin="130,239,0,0" Name="My_combobox" VerticalAlignment="Top" Width="" ItemsSource="{Binding}" SelectionChanged="comboBox1_SelectionChanged" DataContext="{Binding}"></ComboBox>
        <TextBox Height="" HorizontalAlignment="Left" Margin="130,301,0,0" Name="textBox8" VerticalAlignment="Top" Width="" TextChanged="textBox8_TextChanged" />

combobox几个相关的属性：

ItemSource一般绑定list

先定义类

    public class drop_down_list
    {
        public string Name { get; set; }
        public int ID { get; set; }
        public int IDS { get; set; }
    }

然后构建list

            List<drop_down_list> Drop_down_f_g = new List<drop_down_list>();
            Drop_down_f_g.Add(new drop_down_list { Name = "up_up", ID = , IDS =  });
            Drop_down_f_g.Add(new drop_down_list { Name = "one_up", ID = , IDS =  });
            Drop_down_f_g.Add(new drop_down_list { Name = "five_up", ID = , IDS =  });
            Drop_down_f_g.Add(new drop_down_list { Name = "ten_up", ID = , IDS =  });
            Drop_down_f_g.Add(new drop_down_list { Name = "fifteen_up", ID = , IDS =  });
            Drop_down_f_g.Add(new drop_down_list { Name = "fifteen_down", ID = , IDS =  });
            Drop_down_f_g.Add(new drop_down_list { Name = "twentyfive_up", ID = , IDS =  });
            Drop_down_f_g.Add(new drop_down_list { Name = "thirty_down", ID = , IDS =  });
            Drop_down_f_g.Add(new drop_down_list { Name = "fourty_down", ID = , IDS =  });

绑定combobox的数据源

            My_combobox.ItemsSource = Drop_down_f_g;
            My_combobox.DisplayMemberPath = "Name";
            My_combobox.SelectedValuePath = "IDS";
            My_combobox.SelectedIndex = ;

list的初始化和combobox我都是在mainwindow中进行的

通过comboBox的changed函数实现数据获取

        private void comboBox1_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            string test;
            object a;
            a = My_combobox.SelectedValue;
            test = a.ToString();
            textBox8.Text = test;
        }

获取到name对应的ID.

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