PropertyGrid中的AutoDropDown [英] AutoDropDown in PropertyGrid

问题描述

你好，

我有一个PropertyGrid，其中包含来自我的对象的一些属性，而这些属性之一具有一个列表(如ComboBox).此属性具有StringConverter和UITypeEditor.

这些对象的方法被调用，并正确返回类型，那里还有DropDownBox ist，我可以单击它，然后向我显示值，依此类推，但是我不会按Triangle显示值，我将在其中单击任何地方.该属性以通过事件等显示下拉列表.

我是怎么做的?

我搜索了它，但未找到任何可能的结果. :(

问候
Lucki87

Hello,

i have a PropertyGrid with some Propertys from my Object, and One of these Properties has a List (Like ComboBox). This Property has a StringConverter and an UITypeEditor.

The Methods of these Objects were called, and return correctly Types, also the DropDownBox ist there and i can click this an he show me the Values and so on, but i will not press the Triangle to show the values, i will click anywhere in the property to display the drop-down list via Events or so.

How i make this ?

I searched for it, but nothing possible found Frown | :(

Greetings
Lucki87

推荐答案

如果属性类型是枚举，则应立即使用.

如果它更复杂，则必须创建一个自定义 TypeConverter [ ^ ]并覆盖其GetStandardValuesSupported()，GetStandardValuesExclusive()和GetStandardValues()方法.

为了使显示的值可用，您将必须为CanConvertTo()，ConvertTo()，CanConvertFrom()和ConvertFrom()添加替代.它们用于将您的设置与下拉列表中显示的字符串进行转换.

If the property type is an enumeration, it should work out of the box.

If it is something more sophisticated, you will have to create a custom TypeConverter[^] and override its GetStandardValuesSupported(), GetStandardValuesExclusive() and GetStandardValues() methods.

To make the displayed values usable, you will have to add overrides for CanConvertTo(), ConvertTo(), CanConvertFrom() and ConvertFrom(). They are used to convert your settings to/from the string that is displayed in the dropdown.

这篇关于PropertyGrid中的AutoDropDown的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！