C# PropertyGrid 中的多行字符串
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Multi-line string in a PropertyGrid
提问by fryguybob
Is there a built-in editor for a multi-line string in a PropertyGrid.
.a 文件中是否有用于多行字符串的内置编辑器PropertyGrid？
采纳答案by fryguybob
I found that System.Design.dllhas System.ComponentModel.Design.MultilineStringEditorwhich can be used as follows:
我发现，System.Design.dll有System.ComponentModel.Design.MultilineStringEditor哪些可以如下使用：
public class Stuff
{
[Editor(typeof(MultilineStringEditor), typeof(UITypeEditor))]
public string MultiLineProperty { get; set; }
}
回答by Hector Sosa Jr
No, you will need to create what's called a modal UI type editor. You'll need to create a class that inherits from UITypeEditor. This is basically a form that gets shown when you click on the ellipsis button on the right side of the property you are editing.
不，您需要创建所谓的模态 UI 类型编辑器。您需要创建一个继承自 UITypeEditor 的类。这基本上是当您单击正在编辑的属性右侧的省略号按钮时显示的表单。
The only drawback I found, was that I needed to decorate the specific string property with a specific attribute. It's been a while since I had to do that. I got this information from a book by Chris Sells called "Windows Forms Programming in C#"
我发现的唯一缺点是我需要用特定的属性装饰特定的字符串属性。自从我不得不这样做以来已经有一段时间了。我从 Chris Sells 的一本名为“Windows Forms Programming in C#”的书中得到了这些信息
There's a commercial propertygrid called Smart PropertyGrid.NETby VisualHint.
VisualHint有一个名为Smart PropertyGrid.NET的商业属性网格。
回答by Ilya Ryzhenkov
Yes. I don't quite remember how it is called, but look at the Items property editor for something like ComboBox
是的。我不太记得它是如何调用的，但是查看 Items 属性编辑器中的 ComboBox 之类的东西
Edited: As of @fryguybob, ComboBox.Items uses the System.Windows.Forms.Design.ListControlStringCollectionEditor
编辑：从@fryguybob 开始，ComboBox.Items 使用 System.Windows.Forms.Design.ListControlStringCollectionEditor
回答by Sunil Kumar
We need to write our custom editor to get the multiline support in property grid.
我们需要编写我们的自定义编辑器来获得属性网格中的多行支持。
Here is the customer text editor class implemented from UITypeEditor
这是从UITypeEditor实现的客户文本编辑器类
public class MultiLineTextEditor : UITypeEditor
{
private IWindowsFormsEditorService _editorService;
public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
{
return UITypeEditorEditStyle.DropDown;
}
public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
{
_editorService = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
TextBox textEditorBox = new TextBox();
textEditorBox.Multiline = true;
textEditorBox.ScrollBars = ScrollBars.Vertical;
textEditorBox.Width = 250;
textEditorBox.Height = 150;
textEditorBox.BorderStyle = BorderStyle.None;
textEditorBox.AcceptsReturn = true;
textEditorBox.Text = value as string;
_editorService.DropDownControl(textEditorBox);
return textEditorBox.Text;
}
}
Write your custom property grid and apply this Editor attribute to the property
编写您的自定义属性网格并将此编辑器属性应用于该属性
class CustomPropertyGrid
{
private string multiLineStr = string.Empty;
[Editor(typeof(MultiLineTextEditor), typeof(UITypeEditor))]
public string MultiLineStr
{
get { return multiLineStr; }
set { multiLineStr = value; }
}
}
In main form assign this object
在主窗体中分配这个对象
propertyGrid1.SelectedObject = new CustomPropertyGrid();
