【Visual Studio风格开发系列 - PropertyGrid控件】PropertyGrid控件中添加自定义显示方式

如果想在item中增加自定义的显示方式，比如日期选择啦、下拉框啦、甚至文件选择、拾色器等等，我们可以参考如下：

改变 PropertyGrid 控件的编辑风格（1）加入日期控件

步骤一、编辑日期类型数据

using System; using System.Windows.Forms; using System.Drawing.Design; using System.Windows.Forms.Design; namespace blog.csdn.net.zhangyuk { /// <summary> /// 在PropertyGrid 上显示日期控件 /// </summary> public class PropertyGridDateItem : UITypeEditor { MonthCalendar dateControl = new MonthCalendar(); public PropertyGridDateItem() { dateControl.MaxSelectionCount = 1; } public override UITypeEditorEditStyle GetEditStyle(System.ComponentModel.ITypeDescriptorContext context) { return UITypeEditorEditStyle.DropDown; } public override object EditValue(System.ComponentModel.ITypeDescriptorContext context, System.IServiceProvider provider, object value) { try { IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService)); if (edSvc != null) { if (value is string) { dateControl.SelectionStart = DateTime.Parse(value as String); edSvc.DropDownControl(dateControl); return dateControl.SelectionStart.ToShortDateString(); } else if (value is DateTime) { dateControl.SelectionStart = (DateTime)value; edSvc.DropDownControl(dateControl); return dateControl.SelectionStart; } } } catch (Exception ex) { System.Console.WriteLine("PropertyGridDateItem Error : " + ex.Message); return value; } return value; } } }

 步骤二：编辑属性类，指定编辑属性。示例如下：

namespace blog.csdn.net.zhangyuk { public class SomeProperties { private string _finished_time = ""; //…… [Description("完成时间"), Category("属性"), EditorAttribute(typeof(PropertyGridDateItem),typeof(System.Drawing.Design.UITypeEditor))] public String 完成时间 { get { return _finished_date; } set { _finished_date = value; } } //…… } }

步骤三：设置 PropertyGrid 的属性对象。示例如下：

private void Form1_Load(object sender, System.EventArgs e) { this.propertyGrid1.SelectedObject = new SomeProperties(); }  

 

改变 PropertyGrid 控件的编辑风格（2）——编辑多行文本

效果：

适用场合：

1、 编辑多行文本；

2、 编辑长文本。

步骤一：定义从UITypeEditor 派生的类，示例如下：

using System; using System.Windows.Forms; using System.Drawing.Design; using System.Windows.Forms.Design; namespace blog.csdn.net.zhangyuk { /// <summary> /// PropertyGridMutiText 的摘要说明。 /// </summary> public class PropertyGridRichText : UITypeEditor { public override UITypeEditorEditStyle GetEditStyle(System.ComponentModel.ITypeDescriptorContext context) { return UITypeEditorEditStyle.DropDown; } public override object EditValue(System.ComponentModel.ITypeDescriptorContext context, System.IServiceProvider provider, object value) { try { IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService)); if (edSvc != null) { if (value is string) { RichTextBox box = new RichTextBox(); box.Text = value as string; edSvc.DropDownControl(box); return box.Text; } } } catch (Exception ex) { System.Console.WriteLine("PropertyGridRichText Error : " + ex.Message); return value; } return value; } } }

步骤二：编辑属性类，指定编辑属性。示例如下：

namespace blog.csdn.net.zhangyuk { public class SomeProperties { private string _finished_time = ""; // …… // 多行文本编辑框 string _mutiLineSample = ""; [Description("多行文本编辑框"), Category("属性"), EditorAttribute(typeof(PropertyGridRichText), typeof(System.Drawing.Design.UITypeEditor))] public String 多行文本 { get { return _mutiLineSample; } set { _mutiLineSample = value; } } //…… } }

步骤三：设置PropertyGrid的属性对象。示例如下：

private void Form1_Load(object sender, System.EventArgs e) { this.propertyGrid1.SelectedObject = new SomeProperties(); }

 

改变 PropertyGrid 控件的编辑风格（3）——打开对话框

适用场合：

1、 打开文件、打印设置等通用对话框

2、 打开特定的对话框

 

步骤一：定义从UITypeEditor 派生的类，以 OpenFileDialog 对话框为例，示例代码如下：

using System; using System.Windows.Forms; using System.Drawing.Design; using System.Windows.Forms.Design; namespace blog.csdn.net.zhangyuk { /// <summary> /// PropertyGridMutiText 的摘要说明。 /// </summary> public class PropertyGridRichText : UITypeEditor { public override UITypeEditorEditStyle GetEditStyle(System.ComponentModel.ITypeDescriptorContext context) { return UITypeEditorEditStyle.DropDown; } public override object EditValue(System.ComponentModel.ITypeDescriptorContext context, System.IServiceProvider provider, object value) { try { IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService)); if (edSvc != null) { if (value is string) { RichTextBox box = new RichTextBox(); box.Text = value as string; edSvc.DropDownControl(box); return box.Text; } } } catch (Exception ex) { System.Console.WriteLine("PropertyGridRichText Error : " + ex.Message); return value; } return value; } } }

 

 

 

 

步骤二：编辑属性类，指定编辑属性。示例如下：

namespace blog.csdn.net.zhangyuk { public class SomeProperties { private string _finished_time = ""; //…… // 文件 string _fileName = ""; [Description("文件打开对话框"), Category("属性"), EditorAttribute(typeof(PropertyGridFileItem), typeof(System.Drawing.Design.UITypeEditor))] public String 文件 { get { return _fileName; } set { _fileName = value; } } //…… } }

 步骤三：设置PropertyGrid的属性对象。示例如下：

private void Form1_Load(object sender, System.EventArgs e) { this.propertyGrid1.SelectedObject = new SomeProperties(); }

改变 PropertyGrid 控件的编辑风格（4）——加入选择列表

适用场合：限制选择输入

 步骤一：定义从UITypeEditor 继承的抽象类：ComboBoxItemTypeConvert。示例如下：

using System; using System.Collections; using System.ComponentModel; namespace blog.csdn.net.zhangyuk { /// IMSTypeConvert 的摘要说明。 public abstract class ComboBoxItemTypeConvert : TypeConverter { public Hashtable _hash = null; public ComboBoxItemTypeConvert() { _hash = new Hashtable(); GetConvertHash(); } public abstract void GetConvertHash(); public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { return true; } public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { int[] ids = new int[_hash.Values.Count]; int i = 0; foreach (DictionaryEntry myDE in _hash) { ids[i++] = (int)(myDE.Key); } return new StandardValuesCollection(ids); } public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string)) { return true; } return base.CanConvertFrom(context, sourceType); } public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object v) { if (v is string) { foreach (DictionaryEntry myDE in _hash) { if (myDE.Value.Equals((v.ToString()))) return myDE.Key; } } return base.ConvertFrom(context, culture, v); } public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object v, Type destinationType) { if (destinationType == typeof(string)) { foreach (DictionaryEntry myDE in _hash) { if (myDE.Key.Equals(v)) return myDE.Value.ToString(); } return ""; } return base.ConvertTo(context, culture, v, destinationType); } public override bool GetStandardValuesExclusive( ITypeDescriptorContext context) { return false; } } }
步骤二：定义 ComboBoxItemTypeConvert 的派生类，派生类中实现父类的抽象方法：public abstract void GetConvertHash(); 示例如下：

using System; using System.Collections; using System.ComponentModel; namespace blog.csdn.net.zhangyuk { public class PropertyGridBoolItem : ComboBoxItemTypeConvert { public override void GetConvertHash() { _hash.Add(0, "是"); _hash.Add(1, "否"); } } public class PropertyGridComboBoxItem : ComboBoxItemTypeConvert { public override void GetConvertHash() { _hash.Add(0, "炒肝"); _hash.Add(1, "豆汁"); _hash.Add(2, "灌肠"); } } }

步骤三：编辑属性类，指定编辑属性。示例如下：

namespace blog.csdn.net.zhangyuk { public class SomeProperties { private string _finished_time = ""; // …… // 布尔 bool _bool = true; [Description("布尔"), Category("属性"), TypeConverter(typeof(PropertyGridBoolItem))] public int 布尔 { get { return _bool == true ? 0 : 1; } set { _bool = (value == 0 ? true : false); } } // 选择列表 int _comboBoxItems = 0; [Description("选择列表"), Category("属性"), TypeConverter(typeof(PropertyGridComboBoxItem))] public int 选择列表 { get { return _comboBoxItems; } set { _comboBoxItems = value; } } //…… } }

步骤四：设置PropertyGrid的属性对象。示例如下：

private void Form1_Load(object sender, System.EventArgs e) { this.propertyGrid1.SelectedObject = new SomeProperties(); }

source:

http://blog.csdn.net/luyifeiniu/archive/2010/03/29/5426960.aspx