WPF中下拉框将键值对作为其数据源的具体操作。本实例以枚举类型以及枚举特性描述字符串生成键值对来进行。
namespace ViewC
{
/// <summary>
/// View.xaml 的交互逻辑
/// </summary>
public partial class View : Window
{
private EnumType_enumType= EnumType.B;
public View()
{
InitializeComponent();
InitialComBox();
}
private void InitialComBox()
{
Dictionary<EnumType, string> keyValues = new Dictionary<EnumType, string>();
var pro = typeof(EnumType).GetFields();//字段值
for (int i = 0; i < pro.Count(); i++)
{
if (pro[i].FieldType.IsEnum)//枚举类型
{
var descrips = (DescriptionAttribute[])pro[i].GetCustomAttributes(typeof(DescriptionAttribute), false);//特性描述
if (descrips.Length < 0) continue;
var key = (EnumType)typeof(EnumType).InvokeMember(pro[i].Name, System.Reflection.BindingFlags.GetField, null, null, null);//根据枚举名称得到相应枚举值
keyValues.Add(key, descrips[0].Description);
}
}
cmbControlType.ItemsSource = keyValues;
cmbControlType.DisplayMemberPath = "Value";
cmbControlType.SelectedValuePath = "Key";
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
//this.cmbControlType.SelectedValue = _controlStepType;//直接赋值selectvalue属性不会触发selectchanged事件
this.cmbControlType.SelectedIndex = 0;
}
private void CmbControlType_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
var controlType = (EnumType)this.cmbControlType.SelectedValue;
//DoSomething
MessageBox.Show(controlType .ToString());
}
}
public enum EnumType
{
/// <summary>
/// AA
/// </summary>
[Description("AA")]
A,
/// <summary>
/// BB
/// </summary>
[Description("BB")]
B,
/// <summary>
/// CC
/// </summary>
[Description("CC")]
C,
}
}