C# 自定义控件的自定义属性
我正在开发一组自定义控件。我有多个要组合在一起的属性 我知道我可以这样做:C# 自定义控件的自定义属性,c#,properties,controls,C#,Properties,Controls,我正在开发一组自定义控件。我有多个要组合在一起的属性 我知道我可以这样做: [Category("HoverStyle"), Description("Specifies if the label will bold when the mouse is hovering.")] public bool HoverBold { get; set; } [Category("HoverStyle"), Description("Specifies if the label will italici
[Category("HoverStyle"), Description("Specifies if the label will bold when the mouse is hovering.")]
public bool HoverBold { get; set; }
[Category("HoverStyle"), Description("Specifies if the label will italicize when the mouse is hovering.")]
public bool HoverItalicize { get; set; }
[Category("HoverStyle"), Description("Specifies if the label will underline when the mouse is hovering.")]
public bool HoverUnderline { get; set; }
但按字母顺序组织特性栅格时,它们不会显示在组中。我希望这些属性中的每一个都显示为结构的属性,就像x坐标和y坐标显示在控件的Location属性下一样
我尝试创建如下结构:
public struct HoverStyle
{
public bool Bold { get; set; }
public bool Italicize { get; set; }
public bool Underline { get; set; }
}
但这不是我想要的。谢谢你的帮助 您需要指定它的行为不符合预期。无论如何,请尝试:
[TypeConverter(typeof(ExpandableObjectConverter))]
public struct HoverStyle
{
public bool Bold { get; set; }
public bool Italicize { get; set; }
public bool Underline { get; set; }
}
虽然这不是这个确切场景的答案,但同样的解决方案也适用。在这个解决方案中,我展示了我是如何完成上述工作的,但是使用了一个为我正在绘制的控件定义了TopLeft、TopRight、BottomLeft和BottomRight半径的结构。我创建了自己的结构和类型转换器
[Serializable]
[TypeConverter(typeof(CornerRadiiConverter))]
public struct CornerRadii
{
private bool all;
private int topLeft, topRight, bottomLeft, bottomRight;
public readonly static CornerRadii Empty;
[RefreshProperties(RefreshProperties.All)]
public int All
{
get
{
if (!this.all)
return -1;
return this.topLeft;
}
set
{
if (!this.all || this.topLeft != value)
{
this.all = true;
this.topLeft = value;
this.topRight = value;
this.bottomLeft = value;
this.bottomRight = value;
}
}
}
[RefreshProperties(RefreshProperties.All)]
public int TopLeft
{
get
{
return this.topLeft;
}
set
{
if (this.all || this.topLeft != value)
{
this.all = false;
this.topLeft = value;
}
}
}
[RefreshProperties(RefreshProperties.All)]
public int TopRight
{
get
{
if (this.all)
return this.topLeft;
return this.topRight;
}
set
{
if (this.all || this.topRight != value)
{
this.all = false;
this.topRight = value;
}
}
}
[RefreshProperties(RefreshProperties.All)]
public int BottomLeft
{
get
{
if (this.all)
return this.topLeft;
return this.bottomLeft;
}
set
{
if (this.all || this.bottomLeft != value)
{
this.all = false;
this.bottomLeft = value;
}
}
}
[RefreshProperties(RefreshProperties.All)]
public int BottomRight
{
get
{
if (this.all)
return this.topLeft;
return this.bottomRight;
}
set
{
if (this.all || this.bottomRight != value)
{
this.all = false;
this.bottomRight = value;
}
}
}
static CornerRadii()
{
CornerRadii.Empty = new CornerRadii(0);
}
public CornerRadii(int all)
{
this.all = true;
this.topLeft = all;
this.topRight = all;
this.bottomLeft = all;
this.bottomRight = all;
}
public CornerRadii(int topLeft, int topRight, int bottomLeft, int bottomRight)
{
this.topLeft = topLeft;
this.topRight = topRight;
this.bottomLeft = bottomLeft;
this.bottomRight = bottomRight;
this.all = (this.topLeft != this.topRight || this.topLeft != this.bottomRight ? false : this.topLeft == this.bottomRight);
}
internal bool ShouldSerializeAll()
{
return this.all;
}
}
public class CornerRadiiConverter : TypeConverter
{
[TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]
public CornerRadiiConverter()
{
}
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
{
if (sourceType == typeof(string))
{
return true;
}
return base.CanConvertFrom(context, sourceType);
}
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
{
if (destinationType == typeof(InstanceDescriptor))
{
return true;
}
return base.CanConvertTo(context, destinationType);
}
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
string str = value as string;
if (str == null)
return base.ConvertFrom(context, culture, value);
str = str.Trim();
if (str.Length == 0)
return null;
if (culture == null)
culture = CultureInfo.CurrentCulture;
char delimiter = culture.TextInfo.ListSeparator[0];
string[] strArray = str.Split(new char[] { delimiter });
int[] numArray = new int[strArray.Length];
TypeConverter converter = TypeDescriptor.GetConverter(typeof(int));
for (int i = 0; i < numArray.Length; i++)
numArray[i] = (int)converter.ConvertFromString(context, culture, strArray[i]);
if (numArray.Length != 4)
{
object[] objArray = new object[] { "value", str, "topLeft, topRight, bottomLeft, bottomRight" };
throw new ArgumentException();
}
return new CornerRadii(numArray[0], numArray[1], numArray[2], numArray[3]);
}
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
if (destinationType == null)
throw new ArgumentNullException("destinationType");
if (value is CornerRadii)
if (destinationType == typeof(string))
{
CornerRadii cornerRadii = (CornerRadii)value;
if (culture == null)
culture = CultureInfo.CurrentCulture;
string str = string.Concat(culture.TextInfo.ListSeparator, " ");
TypeConverter converter = TypeDescriptor.GetConverter(typeof(int));
string[] strArrays = new string[4];
strArrays[0] = converter.ConvertToString(context, culture, cornerRadii.TopLeft);
strArrays[1] = converter.ConvertToString(context, culture, cornerRadii.TopRight);
strArrays[2] = converter.ConvertToString(context, culture, cornerRadii.BottomLeft);
strArrays[3] = converter.ConvertToString(context, culture, cornerRadii.BottomRight);
return string.Join(str, strArrays);
}
if (destinationType == typeof(InstanceDescriptor))
{
CornerRadii cornerRadii1 = (CornerRadii)value;
if (cornerRadii1.ShouldSerializeAll())
{
ConstructorInfo constructor = typeof(CornerRadii).GetConstructor(new Type[] { typeof(int) });
object[] all = new object[] { cornerRadii1.All };
return new InstanceDescriptor(constructor, all);
}
Type type = typeof(CornerRadii);
Type[] typeArray = new Type[] { typeof(int), typeof(int), typeof(int), typeof(int) };
ConstructorInfo constructorInfo = type.GetConstructor(typeArray);
object[] left = new object[] { cornerRadii1.TopLeft, cornerRadii1.TopRight, cornerRadii1.BottomLeft, cornerRadii1.BottomRight };
return new InstanceDescriptor(constructorInfo, left);
}
return base.ConvertTo(context, culture, value, destinationType);
}
public override object CreateInstance(ITypeDescriptorContext context, IDictionary propertyValues)
{
if (context == null)
throw new ArgumentNullException("context");
if (propertyValues == null)
throw new ArgumentNullException("propertyValues");
CornerRadii value = (CornerRadii)context.PropertyDescriptor.GetValue(context.Instance);
int item = (int)propertyValues["All"];
if (value.All != item)
return new CornerRadii(item);
return new CornerRadii((int)propertyValues["TopLeft"], (int)propertyValues["TopRight"], (int)propertyValues["BottomLeft"], (int)propertyValues["BottomRight"]);
}
public override bool GetCreateInstanceSupported(ITypeDescriptorContext context)
{
return true;
}
public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object value, Attribute[] attributes)
{
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(typeof(CornerRadii), attributes);
string[] strArrays = new string[] { "All", "TopLeft", "TopRight", "BottomLeft", "BottomRight" };
return properties.Sort(strArrays);
}
public override bool GetPropertiesSupported(ITypeDescriptorContext context)
{
return true;
}
}
[可序列化]
[类型转换器(类型(角半径转换器))]
公共结构半径
{
私人布尔所有;
private int上左、上右、下左、下右;
公共只读静态角半径为空;
[RefreshProperties(RefreshProperties.All)]
公共INTALL
{
得到
{
如果(!this.all)
返回-1;
返回此文件。左上角;
}
设置
{
如果(!this.all | | this.topLeft!=值)
{
这是真的;
this.topLeft=值;
this.topRight=值;
this.bottomLeft=值;
this.bottomRight=值;
}
}
}
[RefreshProperties(RefreshProperties.All)]
公共int左上角
{
得到
{
返回此文件。左上角;
}
设置
{
if(this.all | | this.topLeft!=值)
{
这一切都是假的;
this.topLeft=值;
}
}
}
[RefreshProperties(RefreshProperties.All)]
公共int右上角
{
得到
{
如果(全部)
返回此文件。左上角;
返回此.topRight;
}
设置
{
if(this.all | | this.topRight!=值)
{
这一切都是假的;
this.topRight=值;
}
}
}
[RefreshProperties(RefreshProperties.All)]
公共int左下角
{
得到
{
如果(全部)
返回此文件。左上角;
返回这个。左下角;
}
设置
{
if(this.all | | this.bottomLeft!=值)
{
这一切都是假的;
this.bottomLeft=值;
}
}
}
[RefreshProperties(RefreshProperties.All)]
公共权利
{
得到
{
如果(全部)
返回此文件。左上角;
返回这个。右下角;
}
设置
{
if(this.all | | this.bottomRight!=值)
{
这一切都是假的;
this.bottomRight=值;
}
}
}
静态转弯半径()
{
角半径。空=新的角半径(0);
}
公共角半径(整数)
{
这是真的;
this.topLeft=all;
this.topRight=all;
this.bottomLeft=all;
this.bottomRight=all;
}
公共角半径(int-toplown、int-toplown、int-bottomLeft、int-bottomRight)
{
this.topLeft=topLeft;
this.topRight=topRight;
this.bottomLeft=bottomLeft;
this.bottomRight=bottomRight;
this.all=(this.toplight!=this.toplight | | this.toplight!=this.bottomRight?false:this.toplight==this.bottomRight);
}
内部布尔值应序列化所有()
{
把这个还给我;
}
}
公共类CornerRadiConverter:TypeConverter
{
[TargetedPatchingOptOut(“性能对于跨NGen映像边界内联这种类型的方法至关重要”)]
公共拐角半径转换器()
{
}
公共覆盖布尔CanConvertFrom(ITypeScriptorContext上下文,类型sourceType)
{
if(sourceType==typeof(string))
{
返回true;
}
返回base.CanConvertFrom(上下文,sourceType);
}
公共覆盖布尔CanConvertTo(ITypeDescriptorContext上下文,类型destinationType)
{
if(destinationType==typeof(InstanceDescriptor))
{
返回true;
}
返回base.CanConvertTo(上下文,destinationType);
}
公共重写对象ConvertFrom(ITypeDescriptorContext上下文、CultureInfo区域性、对象值)
{
string str=作为字符串的值;
如果(str==null)
返回base.ConvertFrom(上下文、区域性、值);
str=str.Trim();
如果(str.Length==0)
返回null;
if(区域性==null)
culture=CultureInfo.CurrentCulture;
字符分隔符=culture.TextInfo.ListSeparator[0];
string[]strArray=str.Split(新字符[]{delimiter});
int[]numArray=新int[strArray.Length];
TypeConverter converter=TypeDescriptor.GetConverter(typeof(int));
for(int i=0;i