关于propertygrid

liangchencf 2009-11-19 10:09:58

实例中有一个属性是enum类型，能不能在设计时实现复选功能，结果是枚举值的逻辑“或”关系。

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noway8881 2009-11-19

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可以

不过你要自己实现它的设计类，我举个简单的例子给你。weifenluo.DockPanel

[Flags]
[Serializable]
[Editor(typeof(DockAreasEditor), typeof(System.Drawing.Design.UITypeEditor))]
public enum DockAreas
{
Float = 1,
DockLeft = 2,
DockRight = 4,
DockTop = 8,
DockBottom = 16,
Document = 32
}

[LocalizedCategory("Category_Docking")]
[LocalizedDescription("DockContent_DockAreas_Description")] [DefaultValue(DockAreas.DockLeft|DockAreas.DockRight|DockAreas.DockTop|DockAreas.DockBottom|DockAreas.Document|DockAreas.Float)]
public DockAreas DockAreas
{
get { return DockHandler.DockAreas; }
set { DockHandler.DockAreas = value; }
}

设计器代码

using System;

using System.ComponentModel;

using System.Drawing;

using System.Drawing.Design;

using System.Windows.Forms;

using System.Windows.Forms.Design;



namespace WeifenLuo.WinFormsUI.Docking

{	

	internal class DockAreasEditor : UITypeEditor

	{

		private class DockAreasEditorControl : System.Windows.Forms.UserControl

		{

			private CheckBox checkBoxFloat;

			private CheckBox checkBoxDockLeft;

			private CheckBox checkBoxDockRight;

			private CheckBox checkBoxDockTop;

			private CheckBox checkBoxDockBottom;

			private CheckBox checkBoxDockFill;

			private DockAreas m_oldDockAreas;



			public DockAreas DockAreas

			{

				get

				{

					DockAreas dockAreas = 0;

					if (checkBoxFloat.Checked)

						dockAreas |= DockAreas.Float;

					if (checkBoxDockLeft.Checked)

						dockAreas |= DockAreas.DockLeft;

					if (checkBoxDockRight.Checked)

						dockAreas |= DockAreas.DockRight;

					if (checkBoxDockTop.Checked)

						dockAreas |= DockAreas.DockTop;

					if (checkBoxDockBottom.Checked)

						dockAreas |= DockAreas.DockBottom;

					if (checkBoxDockFill.Checked)

						dockAreas |= DockAreas.Document;



					if (dockAreas == 0)

						return m_oldDockAreas;

					else

						return dockAreas;

				}

			}



			public DockAreasEditorControl()

			{

				checkBoxFloat = new CheckBox();

				checkBoxDockLeft = new CheckBox();

				checkBoxDockRight = new CheckBox();

				checkBoxDockTop = new CheckBox();

				checkBoxDockBottom = new CheckBox();

				checkBoxDockFill = new CheckBox();



				SuspendLayout();



				checkBoxFloat.Appearance = Appearance.Button;

				checkBoxFloat.Dock = DockStyle.Top;

				checkBoxFloat.Height = 24;

				checkBoxFloat.Text = Strings.DockAreaEditor_FloatCheckBoxText;

				checkBoxFloat.TextAlign = ContentAlignment.MiddleCenter;

				checkBoxFloat.FlatStyle = FlatStyle.System;

			

				checkBoxDockLeft.Appearance = System.Windows.Forms.Appearance.Button;

				checkBoxDockLeft.Dock = System.Windows.Forms.DockStyle.Left;

				checkBoxDockLeft.Width = 24;

				checkBoxDockLeft.FlatStyle = FlatStyle.System;



				checkBoxDockRight.Appearance = System.Windows.Forms.Appearance.Button;

				checkBoxDockRight.Dock = System.Windows.Forms.DockStyle.Right;

				checkBoxDockRight.Width = 24;

				checkBoxDockRight.FlatStyle = FlatStyle.System;



				checkBoxDockTop.Appearance = System.Windows.Forms.Appearance.Button;

				checkBoxDockTop.Dock = System.Windows.Forms.DockStyle.Top;

				checkBoxDockTop.Height = 24;

				checkBoxDockTop.FlatStyle = FlatStyle.System;



				checkBoxDockBottom.Appearance = System.Windows.Forms.Appearance.Button;

				checkBoxDockBottom.Dock = System.Windows.Forms.DockStyle.Bottom;

				checkBoxDockBottom.Height = 24;

				checkBoxDockBottom.FlatStyle = FlatStyle.System;

			

				checkBoxDockFill.Appearance = System.Windows.Forms.Appearance.Button;

				checkBoxDockFill.Dock = System.Windows.Forms.DockStyle.Fill;

				checkBoxDockFill.FlatStyle = FlatStyle.System;



				this.Controls.AddRange(new Control[] {

														 checkBoxDockFill,

														 checkBoxDockBottom,

														 checkBoxDockTop,

														 checkBoxDockRight,

														 checkBoxDockLeft,

														 checkBoxFloat});



				Size = new System.Drawing.Size(160, 144);

				BackColor = SystemColors.Control;

				ResumeLayout();

			}



			public void SetStates(DockAreas dockAreas)

			{

				m_oldDockAreas = dockAreas;

				if ((dockAreas & DockAreas.DockLeft) != 0)

					checkBoxDockLeft.Checked = true;

				if ((dockAreas & DockAreas.DockRight) != 0)

					checkBoxDockRight.Checked = true;

				if ((dockAreas & DockAreas.DockTop) != 0)

					checkBoxDockTop.Checked = true;

				if ((dockAreas & DockAreas.DockTop) != 0)

					checkBoxDockTop.Checked = true;

				if ((dockAreas & DockAreas.DockBottom) != 0)

					checkBoxDockBottom.Checked = true;

				if ((dockAreas & DockAreas.Document) != 0)

					checkBoxDockFill.Checked = true;

				if ((dockAreas & DockAreas.Float) != 0)

					checkBoxFloat.Checked = true;

			}

		}



		private DockAreasEditor.DockAreasEditorControl m_ui = null;



		public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)

		{

			return UITypeEditorEditStyle.DropDown;

		}



		public override object EditValue(ITypeDescriptorContext context, IServiceProvider sp, object value)

		{

			if (m_ui == null)

				m_ui = new DockAreasEditor.DockAreasEditorControl();



			m_ui.SetStates((DockAreas)value);



            IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)sp.GetService(typeof(IWindowsFormsEditorService));

			edSvc.DropDownControl(m_ui);



			return m_ui.DockAreas;

		}

	}

}