自定义属性

shuiwenyu 2009-04-30 04:22:18

我想做一个自定义属性
在属性编辑器里面鼠标进入设置时就弹出一对话框下来可以再上面写文字
就类似Textbox的lines属性
谁知道怎么实现啊

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gomoku 2009-05-01

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如果不知道怎么测试下面的例子你再发问。



public class My : Component

{

    private string[] defaultLines;

    private string[] myLines;



    [Editor("System.Windows.Forms.Design.StringArrayEditor, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(UITypeEditor))]

    public string[] DefaultTextBoxLines { get { return this.defaultLines; } set { this.defaultLines = value; } }



    [Editor( typeof(MyEditor), typeof(UITypeEditor))]

    public string[] MyLines { get { return this.myLines; } set { this.myLines = value; } }

}



public class MyEditor : UITypeEditor

{

    public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)

    {

        return UITypeEditorEditStyle.Modal;

    }



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

    {

        IWindowsFormsEditorService editorService = provider.GetService(typeof(IWindowsFormsEditorService)) as IWindowsFormsEditorService;

        MyEditorForm editorForm = new MyEditorForm(value as string[]);

        editorService.ShowDialog( editorForm );

        return editorForm.Lines;

    }



    private class MyEditorForm : Form

    {

        public MyEditorForm(string[] lines)

        {

            InitializeComponent();

            this.textBox.Lines = lines;

        }



        public string[] Lines

        {

            get { return this.textBox.Lines; }

        }



        void InitializeComponent()

        {

            textBox.Multiline = true;

            textBox.Dock = DockStyle.Top;

            textBox.Height = 200;



            okButton.Text = "&Ok";

            okButton.Dock = DockStyle.Bottom;

            okButton.DialogResult = DialogResult.OK;

            okButton.Height = this.ClientRectangle.Height - textBox.Height;



            this.Controls.Add(textBox);

            this.Controls.Add(okButton);

            this.StartPosition = FormStartPosition.CenterScreen;

        }



        TextBox textBox = new TextBox();

        Button okButton = new Button();

    }

}