反射创建属性 修改属性类型

Question

  private string name;
            [EditorAttribute(typeof(myeditor), typeof(System.Drawing.Design.UITypeEditor))]
            public string Name
            {
                get { return name; }
                set { name = value; }
            }
类似这种 动态创建 属性 怎么给属性修改
 [EditorAttribute(typeof(myeditor), typeof(System.Drawing.Design.UITypeEditor))]
这个属性是一个类  修改属性类型 让属性加载到propertygrid里面显示 点击按钮能弹出框
创建动态的属性没问题  请问怎么修改属性的EditorAttribute   反射创建属性 修改属性类型

Answer 1

动态创建的
   for (int i = 0; i < objXMLNode.ChildNodes.Count; i++)
                        {
                            strPropertyName = objXMLNode.ChildNodes[i].Name;
                            // Add the class variable, such as "m_strIPAddress"
                            fieldBuilder = typeBuilder.DefineField("_" + strPropertyName, typeof(string), FieldAttributes.Public);
                            propertyBuilder = typeBuilder.DefineProperty(strPropertyName, System.Reflection.PropertyAttributes.HasDefault, typeof(string), null);
                            getSetAttr = MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig;
                            methodBuilder = typeBuilder.DefineMethod("get_" + strPropertyName, getSetAttr, typeof(string), Type.EmptyTypes);
                            methodBuilder.SetReturnType(typeof(string));
                            ilGenerator = methodBuilder.GetILGenerator();
                            ilGenerator.Emit(OpCodes.Ldarg_0);
                            ilGenerator.Emit(OpCodes.Ldfld, fieldBuilder);
                            ilGenerator.Emit(OpCodes.Ret);
                            propertyBuilder.SetGetMethod(methodBuilder);
                            methodBuilder = typeBuilder.DefineMethod("set_" + strPropertyName,
                               MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.SpecialName,
                               typeof(void), methodArgs);
                            ilGenerator = methodBuilder.GetILGenerator();
                            ilGenerator.Emit(OpCodes.Ldarg_0);
                            ilGenerator.Emit(OpCodes.Ldarg_1);
                            ilGenerator.Emit(OpCodes.Stfld, fieldBuilder);
                            ilGenerator.Emit(OpCodes.Ret);
                            propertyBuilder.SetSetMethod(methodBuilder);
                         
                        
                        }

Answer 2

用MethodBuilder.SetCustomAttribute方法啊

Answer 3

对就是不会用这个方法！能给个代码么
  public class myeditor : UITypeEditor
        {
            public myeditor()
            {             }
            public override System.Drawing.Design.UITypeEditorEditStyle GetEditStyle(System.ComponentModel.ITypeDescriptorContext context)
            {
                return UITypeEditorEditStyle.Modal;
            }
            public override object EditValue(System.ComponentModel.ITypeDescriptorContext context, System.IServiceProvider provider, object value)
            {
                IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
                string str = null;
                if (edSvc != null)
                {
                    //test f = new test();
                    // your setting here
                    StatisticalCategoryForm f = new StatisticalCategoryForm();
                    DialogResult dr = edSvc.ShowDialog(f);
                    
                    if (dr == DialogResult.OK)
                    {
                        foreach (KeyValuePair<string,string> kvp in Customer.Diction)
                    {
                            if (kvp.Value != "")
                                str += kvp.Key+ kvp.Value;
                            else
                                str += kvp.Key + " ";
                    }
                    }
                }
                value = str;
                return value;
            }
            public override bool GetPaintValueSupported(System.ComponentModel.ITypeDescriptorContext context)
            {
                return false;
            }
        }
属性的类型就是这个类  不知道该怎么写

Answer 4

var constructor = typeof(EditorAttribute).GetConstructor(new Type[] {typeof(Type),typeof(Type)});
var customAttribute = new CustomAttributeBuilder(constructor,new object[] {typeof(myeditor), typeof(UITypeEditor)});
propertyBuilder.SetCustomAttribute(customAttribute);

Answer 5

建议你看Stephen Toub在MSDN杂志上的ICustomTypeDescriptor, Part 1
http://msdn.microsoft.com/en-us/magazine/cc163816.aspx很多的控件（PropertyGrid, DataGridView）都认可CustomTypeDescriptor。
一般没有必要用动态类型编译。

Answer 6

谢谢两位的帮忙   superliu1122  能解决我的问题  谢谢