WPF enumeration and ComboBox binding
PS: I haven't written WPF for a while, and some technologies have forgotten how to implement it. The egg hurts. Write it down when you encounter a technology in the future.
Method 1: XMAL binding
namespace DN.ORM
{
public enum DatabaseTypes
{
/// <summary>
/// https://www.runoob.com/mysql/mysql-create-database.html
/// </summary>
MYSQL,
/// <summary>
///
/// </summary>
SQLServer,
/// <summary>
///
/// </summary>
SQLite,
/// <summary>
///
/// </summary>
Oracle,
}
}
<ObjectDataProvider x:Key="KeyOfDatabaseTypes" MethodName="GetValues" ObjectType="{x:Type sys:Enum}">
<ObjectDataProvider.MethodParameters>
<x:Type TypeName="database:DatabaseTypes" />
</ObjectDataProvider.MethodParameters>
</ObjectDataProvider>
<controls:MSComboBox x:Name="Txt_DataBaseType"
Width="300"
Margin="10,10"
controls:InfoElement.Necessary="True"
controls:InfoElement.Placeholder="MYSQL"
controls:InfoElement.Title="数据库类型"
controls:InfoElement.TitlePlacement="Left"
controls:InfoElement.TitleWidth="100"
ItemsSource="{Binding Source={StaticResource KeyOfDatabaseTypes}}" />
Method two: background code one
this.Cmb_DataBaseType.ItemsSource = Enum.GetValues(typeof(DatabaseTypes));
this.Cmb_DataBaseType.SelectedItem = DatabaseTypes.MYSQL;
this.Cmb_Charset.ItemsSource = Enum.GetValues(typeof(CharsetTypes));
this.Cmb_Charset.SelectedItem = CharsetTypes.utf8;
Method three: background code two
List<City> list = new List<City>();
list.Add(new City {
ID = 1, Name = "上海" });
list.Add(new City {
ID = 2, Name = "北京" });
list.Add(new City {
ID =3, Name = "天津" });
cmb_list.ItemsSource = list;
<ComboBox Name="cmb_list" Height="23" DisplayMemberPath="Name" SelectedValuePath="ID" />
Method 4: Customize the ComboBox control
/// <summary>
/// 提供类型选择的下拉框
/// </summary>
public class TypeComboBox : ComboBox
{
/// <summary/>
public TypeComboBox()
{
ItemsSource = Source;
}
/// <summary>
/// 在下拉框弹出窗口时发生
/// </summary>
protected override void OnDropDownOpened(EventArgs e)
{
ItemsSource = Source;
base.OnDropDownOpened(e);
}
private IEnumerable Source => UIEditorServices.TypeProvideService.TypeNames;
}
public TypeProvideService()
{
this.TypeDict.Add(typeof(Rect), typeof(Rect).Name);
this.TypeDict.Add(typeof(Point), typeof(Point).Name);
this.TypeDict.Add(typeof(Size), typeof(Size).Name);
this.TypeDict.Add(typeof(Brush), typeof(Brush).Name);
this.TypeDict.Add(typeof(string), typeof(string).Name);
this.TypeDict.Add(typeof(byte), typeof(byte).Name);
this.TypeDict.Add(typeof(sbyte), typeof(sbyte).Name);
this.TypeDict.Add(typeof(decimal), typeof(decimal).Name);
this.TypeDict.Add(typeof(double), typeof(double).Name);
this.TypeDict.Add(typeof(float), typeof(float).Name);
this.TypeDict.Add(typeof(int), typeof(int).Name);
this.TypeDict.Add(typeof(uint), typeof(uint).Name);
this.TypeDict.Add(typeof(long), typeof(long).Name);
this.TypeDict.Add(typeof(ulong), typeof(ulong).Name);
this.TypeDict.Add(typeof(short), typeof(short).Name);
this.TypeDict.Add(typeof(ushort), typeof(ushort).Name);
this.TypeDict.Add(typeof(Thickness), typeof(Thickness).Name);
this.TypeDict.Add(typeof(CornerRadius), typeof(CornerRadius).Name);
//this.TypeDict.Add(typeof(ushort), typeof(ushort).Name);
//this.TypeDict.Add(typeof(ushort), typeof(ushort).Name);
}
/// <summary/>
public IEnumerable<string> TypeNames => TypeDict.Values;