这篇随笔其实是从别人博客上载录的。感觉很有价值,整理了一下放在了我自己的博客上,希望原作者不要介意。
可自定义PropertyGrid控件的属性。也可将属性名称显示为中文。主要是由XML文件与ICustomTypeDescriptor来实现。
第一步:做一个继承ICustomTypeDescriptor接口的类 文件名称:CustomProperty.cs
using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.ComponentModel;
using System.Xml;
using System.Windows.Forms;
namespace **
{
class CustomProperty : ICustomTypeDescriptor
{
//当前选择对象
private object mCurrentSelectObject;
private Dictionary<string, string> mObjectAttribs = new Dictionary<string, string>();
public CustomProperty(object pSelectObject, XmlNodeList pObjectPropertys)
{
mCurrentSelectObject = pSelectObject;
XmlNode tmpXNode;
IEnumerator tmpIe = pObjectPropertys.GetEnumerator();
while (tmpIe.MoveNext())
{
tmpXNode = tmpIe.Current as XmlNode;
mObjectAttribs.Add(tmpXNode.Attributes["Name"].Value, tmpXNode.Attributes["Caption"].Value);
}
}
#region ICustomTypeDescriptor Members
public AttributeCollection GetAttributes()
{
return TypeDescriptor.GetAttributes(mCurrentSelectObject);
}
public string GetClassName()
{
return TypeDescriptor.GetClassName(mCurrentSelectObject);
}
public string GetComponentName()
{
return TypeDescriptor.GetComponentName(mCurrentSelectObject);
}
public TypeConverter GetConverter()
{
return TypeDescriptor.GetConverter(mCurrentSelectObject);
}
public EventDescriptor GetDefaultEvent()
{
return TypeDescriptor.GetDefaultEvent(mCurrentSelectObject);
}
public PropertyDescriptor GetDefaultProperty()
{
return TypeDescriptor.GetDefaultProperty(mCurrentSelectObject);
}
public object GetEditor(Type editorBaseType)
{
return TypeDescriptor.GetEditor(mCurrentSelectObject, editorBaseType);
}
public EventDescriptorCollection GetEvents(Attribute[] attributes)
{
return TypeDescriptor.GetEvents(mCurrentSelectObject, attributes);
}
public EventDescriptorCollection GetEvents()
{
return TypeDescriptor.GetEvents(mCurrentSelectObject);
}
public PropertyDescriptorCollection GetProperties(Attribute[] attributes)
{
List<CustomPropertyDescriptor> tmpPDCLst = new List<CustomPropertyDescriptor>();
PropertyDescriptorCollection tmpPDC = TypeDescriptor.GetProperties(mCurrentSelectObject, attributes);
IEnumerator tmpIe = tmpPDC.GetEnumerator();
CustomPropertyDescriptor tmpCPD;
PropertyDescriptor tmpPD;
while (tmpIe.MoveNext())
{
tmpPD = tmpIe.Current as PropertyDescriptor;
if (mObjectAttribs.ContainsKey(tmpPD.Name))
{
tmpCPD = new CustomPropertyDescriptor(mCurrentSelectObject, tmpPD);
tmpCPD.SetDisplayName(mObjectAttribs[tmpPD.Name]);
tmpCPD.SetCategory(tmpPD.Category + "中文");
tmpPDCLst.Add(tmpCPD);
}
}
return new PropertyDescriptorCollection(tmpPDCLst.ToArray());
}
public PropertyDescriptorCollection GetProperties()
{
return TypeDescriptor.GetProperties(mCurrentSelectObject);
}
public object GetPropertyOwner(PropertyDescriptor pd)
{
return mCurrentSelectObject;
}
#endregion
class CustomPropertyDescriptor : PropertyDescriptor
{
private PropertyDescriptor mProp;
private object mComponent;
public CustomPropertyDescriptor(object pComponent, PropertyDescriptor pPD)
: base(pPD)
{
mCategory = base.Category;
mDisplayName = base.DisplayName;
mProp = pPD;
mComponent = pComponent;
}
private string mCategory;
public override string Category
{
get { return mCategory; }
}
private string mDisplayName ;
public override string DisplayName
{
get { return mDisplayName; }
}
public void SetDisplayName(string pDispalyName)
{
mDisplayName = pDispalyName;
}
public void SetCategory(string pCategory)
{
mCategory = pCategory;
}
public override bool CanResetValue(object component)
{
return mProp.CanResetValue(component);
}
public override Type ComponentType
{
get { return mProp.ComponentType; }
}
public override object GetValue(object component)
{
return mProp.GetValue(component);
}
public override bool IsReadOnly
{
get { return mProp.IsReadOnly; }
}
public override Type PropertyType
{
get { return mProp.PropertyType; }
}
public override void ResetValue(object component) { mProp.ResetValue(component); }
public override void SetValue(object component, object value) { mProp.SetValue(component, value); }
public override bool ShouldSerializeValue(object component)
{
return mProp.ShouldSerializeValue(component);
}
}
#region ICustomTypeDescriptor 成员
AttributeCollection ICustomTypeDescriptor.GetAttributes()
{
throw new Exception("The method or operation is not implemented.");
}
string ICustomTypeDescriptor.GetClassName()
{
throw new Exception("The method or operation is not implemented.");
}
string ICustomTypeDescriptor.GetComponentName()
{
throw new Exception("The method or operation is not implemented.");
}
TypeConverter ICustomTypeDescriptor.GetConverter()
{
throw new Exception("The method or operation is not implemented.");
}
EventDescriptor ICustomTypeDescriptor.GetDefaultEvent()
{
throw new Exception("The method or operation is not implemented.");
}
PropertyDescriptor ICustomTypeDescriptor.GetDefaultProperty()
{
throw new Exception("The method or operation is not implemented.");
}
object ICustomTypeDescriptor.GetEditor(Type editorBaseType)
{
throw new Exception("The method or operation is not implemented.");
}
EventDescriptorCollection ICustomTypeDescriptor.GetEvents(Attribute[] attributes)
{
throw new Exception("The method or operation is not implemented.");
}
EventDescriptorCollection ICustomTypeDescriptor.GetEvents()
{
throw new Exception("The method or operation is not implemented.");
}
PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties(Attribute[] attributes)
{
throw new Exception("The method or operation is not implemented.");
}
PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties()
{
throw new Exception("The method or operation is not implemented.");
}
object ICustomTypeDescriptor.GetPropertyOwner(PropertyDescriptor pd)
{
throw new Exception("The method or operation is not implemented.");
}
#endregion
}
}
第二步:XML文件的处理 做一个XML文件名为CustomProperty.xml
<?xml version="1.0" encoding="gb2312" ?>
<Components>
<Component Name="TextBox" Namespace="System.Windows.Forms" Asm="System.dll">
<Propertys>
<Property Name="BackColor" Caption="背影色" Group=""/>
<Property Name="BorderStyle" Caption="边框样式" Group=""/>
<Property Name="Font" Caption="字体" Group=""/>
<Property Name="ForeColor" Caption="字色" Group=""/>
<Property Name="Text" Caption="内容" Group=""/>
<Property Name="ScrollBars" Caption="滚动条" Group=""/>
<Property Name="TextAlign" Caption="文本对齐" Group=""/>
<Property Name="Multline" Caption="多行" Group=""/>
<Property Name="PasswordChar" Caption="密码文本" Group=""/>
<Property Name="Size" Caption="大小" Group=""/>
<Property Name="Location" Caption="位置" Group=""/>
</Propertys>
<DataBinding>
</DataBinding>
</Component>
<Component Name="Label" Namespace="System.Windows.Forms" Asm="System.dll">
<Propertys>
<Property Name="BackColor" Caption="背影色" Group=""/>
<Property Name="BorderStyle" Caption="边框样式" Group=""/>
<Property Name="Font" Caption="字体" Group=""/>
<Property Name="ForeColor" Caption="字色" Group=""/>
<Property Name="Image" Caption="图片" Group=""/>
<Property Name="ImageAlign" Caption="图片对齐" Group=""/>
<Property Name="Text" Caption="文字" Group=""/>
<Property Name="TextAlign" Caption="文本对齐" Group=""/>
<Property Name="Size" Caption="大小" Group=""/>
<Property Name="Location" Caption="位置" Group=""/>
</Propertys>
<DataBinding>
</DataBinding>
</Component>
<Component Name="Button" Namespace="System.Windows.Forms" Asm="System.dll">
<Propertys>
<Property Name="BackColor" Caption="背影色" Group=""/>
<Property Name="BorderStyle" Caption="边框样式" Group=""/>
<Property Name="Font" Caption="字体" Group=""/>
<Property Name="ForeColor" Caption="字色" Group=""/>
<Property Name="FlatStyle" Caption="样式" Group=""/>
<Property Name="Text" Caption="文本" Group=""/>
<Property Name="Size" Caption="大小" Group=""/>
<Property Name="Location" Caption="位置" Group=""/>
</Propertys>
<DataBinding>
</DataBinding>
</Component>
</Components>
第三步:winfrom中,单击"Button"、"Label"、"TextBox" 均可显示各自不同的属性页,且为中文
XmlDocument mXDoc = new XmlDocument();
public Form1()
{
mXDoc.Load(Application.StartupPath + "\\Components.xml");
}
private void textBox1_MouseDown(object sender, MouseEventArgs e)
{
ShowCustProperty(sender, "TextBox");
}
private void label1_MouseDown(object sender, MouseEventArgs e)
{
ShowCustProperty(sender, "Label");
}
private void ShowCustProperty(object sender, string str)
{
XmlNode tmpXNode = mXDoc.SelectSingleNode("Components/Component[@Name='" + str + "']");
XmlNodeList tmpXPropLst = tmpXNode.SelectNodes("Propertys/Property");
CustomProperty cp = new CustomProperty(sender, tmpXPropLst);
propertyGrid1.SelectedObject = cp;
}