c＃usercontrol设置自定义属性的选项列表(c# usercontrol setting list of options for custom property)

c＃usercontrol设置自定义属性的选项列表(c# usercontrol setting list of options for custom property)

我正在尝试创建一个自定义可折叠面板，用于我的一个项目。 我设置它来显示哪些边应该能够折叠，并且它需要一个字符串输入{"None", "Up", "Right", "Down", "Left", "All"}; 。

这是我到目前为止：

public partial class CollapsiblePanel : UserControl { # region Collapse Direction List<string> DirectionOptions = new List<string> { "None", "Up", "Right", "Down", "Left", "All" }; [Browsable(true), DefaultValue("All"), Description("Direction panel collapses. 0-none, 1-up, 2-right, 3-down, 4-left, 5-all")] [ListBindable(true), Editor(typeof(ComboBox), typeof(UITypeEditor))] private string _direction = "All"; public List<string> Direction { get { return DirectionOptions; } set { DirectionOptions = value; callCollapseDirectionChanged(); } } public event Action CollapseDirectionChanged; protected void callCollapseDirectionChanged() { Action handler = CollapseDirectionChanged; DisplayButtons(); if (handler != null) { handler(); } } # endregion public CollapsiblePanel() { InitializeComponent(); } private void DisplayButtons() { switch (_direction) { case "None": buttonDown.Visible = false; buttonUp.Visible = false; buttonRight.Visible = false; buttonLeft.Visible = false; break; case "Up": buttonDown.Visible = false; buttonUp.Visible = true; buttonRight.Visible = false; buttonLeft.Visible = false; break; case "Right": buttonDown.Visible = false; buttonUp.Visible = false; buttonRight.Visible = true; buttonLeft.Visible = false; break; case "Down": buttonDown.Visible = true; buttonUp.Visible = false; buttonRight.Visible = false; buttonLeft.Visible = false; break; case "Left": buttonDown.Visible = false; buttonUp.Visible = false; buttonRight.Visible = false; buttonLeft.Visible = true; break; case "All": buttonDown.Visible = true; buttonUp.Visible = true; buttonRight.Visible = true; buttonLeft.Visible = true; break; } } }

有人可以向我解释如何让设计师为用户提供DirectionOptions列表作为可能的值吗？ 他们可以选择任何一个字符串作为值。

I am trying to create a custom collapsible panel for use in one of my projects. I have it set up to display which sides should be able to collapse, and it takes a string input {"None", "Up", "Right", "Down", "Left", "All"};.

Here is what I have so far:

public partial class CollapsiblePanel : UserControl { # region Collapse Direction List<string> DirectionOptions = new List<string> { "None", "Up", "Right", "Down", "Left", "All" }; [Browsable(true), DefaultValue("All"), Description("Direction panel collapses. 0-none, 1-up, 2-right, 3-down, 4-left, 5-all")] [ListBindable(true), Editor(typeof(ComboBox), typeof(UITypeEditor))] private string _direction = "All"; public List<string> Direction { get { return DirectionOptions; } set { DirectionOptions = value; callCollapseDirectionChanged(); } } public event Action CollapseDirectionChanged; protected void callCollapseDirectionChanged() { Action handler = CollapseDirectionChanged; DisplayButtons(); if (handler != null) { handler(); } } # endregion public CollapsiblePanel() { InitializeComponent(); } private void DisplayButtons() { switch (_direction) { case "None": buttonDown.Visible = false; buttonUp.Visible = false; buttonRight.Visible = false; buttonLeft.Visible = false; break; case "Up": buttonDown.Visible = false; buttonUp.Visible = true; buttonRight.Visible = false; buttonLeft.Visible = false; break; case "Right": buttonDown.Visible = false; buttonUp.Visible = false; buttonRight.Visible = true; buttonLeft.Visible = false; break; case "Down": buttonDown.Visible = true; buttonUp.Visible = false; buttonRight.Visible = false; buttonLeft.Visible = false; break; case "Left": buttonDown.Visible = false; buttonUp.Visible = false; buttonRight.Visible = false; buttonLeft.Visible = true; break; case "All": buttonDown.Visible = true; buttonUp.Visible = true; buttonRight.Visible = true; buttonLeft.Visible = true; break; } } }

Can someone explain to me how to get the designer to give the user the DirectionOptions list as the possible values? They can pick any one of the strings as the value.

最满意答案

用户应该能够选择多个选项还是只能选择一个？

如果它只是一个 - 那么属性应该是枚举而不是列表。

像这样的东西应该工作：

public partial class CollapsiblePanel : UserControl { public enum CollapseDirection { None, Up, Right, Down, Left, All } # region Collapse Direction [Browsable(true), DefaultValue("All"), Description("Direction panel collapses. 0-none, 1-up, 2-right, 3-down, 4-left, 5-all")] [ListBindable(true), Editor(typeof(ComboBox), typeof(UITypeEditor))] private CollapseDirection _direction = CollapseDirection.All; public CollapseDirection Direction { get { return _direction; } set { _direction = value; callCollapseDirectionChanged(); } } public event Action CollapseDirectionChanged; protected void callCollapseDirectionChanged() { Action handler = CollapseDirectionChanged; DisplayButtons(); if (handler != null) { handler(); } } # endregion public CollapsiblePanel() { InitializeComponent(); } private void DisplayButtons() { switch (_direction) { case CollapseDirection.None: buttonDown.Visible = false; buttonUp.Visible = false; buttonRight.Visible = false; buttonLeft.Visible = false; break; case CollapseDirection.Up: buttonDown.Visible = false; buttonUp.Visible = true; buttonRight.Visible = false; buttonLeft.Visible = false; break; case CollapseDirection.Right: buttonDown.Visible = false; buttonUp.Visible = false; buttonRight.Visible = true; buttonLeft.Visible = false; break; case CollapseDirection.Down: buttonDown.Visible = true; buttonUp.Visible = false; buttonRight.Visible = false; buttonLeft.Visible = false; break; case CollapseDirection.Left: buttonDown.Visible = false; buttonUp.Visible = false; buttonRight.Visible = false; buttonLeft.Visible = true; break; case CollapseDirection.All: buttonDown.Visible = true; buttonUp.Visible = true; buttonRight.Visible = true; buttonLeft.Visible = true; break; } } } 注意 - 这是指南 - 我没有测试过代码，但这应该让你了解你想要实现的目标。

Should the user be able to select multiple options or just one?

If its just one - then the property should be an Enum not a List.

Something like this should work:

public partial class CollapsiblePanel : UserControl { public enum CollapseDirection { None, Up, Right, Down, Left, All } # region Collapse Direction [Browsable(true), DefaultValue("All"), Description("Direction panel collapses. 0-none, 1-up, 2-right, 3-down, 4-left, 5-all")] [ListBindable(true), Editor(typeof(ComboBox), typeof(UITypeEditor))] private CollapseDirection _direction = CollapseDirection.All; public CollapseDirection Direction { get { return _direction; } set { _direction = value; callCollapseDirectionChanged(); } } public event Action CollapseDirectionChanged; protected void callCollapseDirectionChanged() { Action handler = CollapseDirectionChanged; DisplayButtons(); if (handler != null) { handler(); } } # endregion public CollapsiblePanel() { InitializeComponent(); } private void DisplayButtons() { switch (_direction) { case CollapseDirection.None: buttonDown.Visible = false; buttonUp.Visible = false; buttonRight.Visible = false; buttonLeft.Visible = false; break; case CollapseDirection.Up: buttonDown.Visible = false; buttonUp.Visible = true; buttonRight.Visible = false; buttonLeft.Visible = false; break; case CollapseDirection.Right: buttonDown.Visible = false; buttonUp.Visible = false; buttonRight.Visible = true; buttonLeft.Visible = false; break; case CollapseDirection.Down: buttonDown.Visible = true; buttonUp.Visible = false; buttonRight.Visible = false; buttonLeft.Visible = false; break; case CollapseDirection.Left: buttonDown.Visible = false; buttonUp.Visible = false; buttonRight.Visible = false; buttonLeft.Visible = true; break; case CollapseDirection.All: buttonDown.Visible = true; buttonUp.Visible = true; buttonRight.Visible = true; buttonLeft.Visible = true; break; } } } Note - this is guide - I haven't tested the code, but that should put you in the general direction of what you want to achieve.