c# propertyGrid下拉选项

实现下面效果的propertygrid属性下拉选择



具体代码如下

//form窗口类

public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
properties ps = new properties();
propertyGrid1.SelectedObject = ps;
}
}

//属性类

public class properties
{
[Category("性别"),Description("student gender"),
TypeConverter(typeof(genderItem)) //使用自定义的属性下拉item类
]
public string Gender
{
get;
set;
}
}

//自定义属性下拉效果的类，该类主要继承StringConverter类，并重载该类的一些虚拟方法

public class genderItem:StringConverter
{
//true enable,false disable
public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
{
return true;
}

public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
return new StandardValuesCollection(new string[] { "男", "女" }); //编辑下拉框中的items
}

//true: disable text editting. false: enable text editting;
public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
{
return true;
}
}

//形成checkbox选项样式



属性类的代码如下

[Category("信息"), Description("student information"),
Editor(typeof(CheckboxPro),typeof(System.Drawing.Design.UITypeEditor))]
public bool IsGoodStudent
{
get;
set;
}

其中checkboxpro类定义如下，用该方法会出了checkbox窗口

public class CheckboxPro:System.Drawing.Design.UITypeEditor
{
public override bool GetPaintValueSupported(ITypeDescriptorContext context)
{
return true;
}

public override void PaintValue(System.Drawing.Design.PaintValueEventArgs e)
{
ControlPaint.DrawCheckBox(e.Graphics, e.Bounds, ButtonState.Inactive);
}
}