Question

我正在替换我的属性网格，这将允许我更好地自定义我的UI。我在表单上放了一个按钮，我希望点击它时会弹出一个CollectionEditor并允许我修改我的代码。当我使用PropertyGrid时，我需要做的就是向指向我的CollectionEditor的属性添加一些属性并且它有效。但是如何手动调用CollectionEditor呢？谢谢！

Answer 1

在这里找到答案：http://www.devnewsgroups.net/windowsforms/t11948-collectioneditor.aspx

以防上面链接的网站有一天会消失，这就是它的要点。但是，代码是从上面的链接逐字的;评论是我的。

假设您有一个带有ListBox和按钮的表单。如果您想使用CollectionEditor编辑ListBox中的项目，您可以在EventHandler中执行以下操作：

private void button1_Click(object sender, System.EventArgs e)
{
    //listBox1 is the object containing the collection.  Remember, if the collection
    //belongs to the class you're editing, you can use this
    //Items is the name of the property that is the collection you wish to edit.
    PropertyDescriptor pd = TypeDescriptor.GetProperties(listBox1)["Items"];
    UITypeEditor editor = (UITypeEditor)pd.GetEditor(typeof(UITypeEditor));
    RuntimeServiceProvider serviceProvider = new RuntimeServiceProvider();
    editor.EditValue(serviceProvider, serviceProvider, listBox1.Items);
}

现在您需要做的下一件事是创建RuntimeServiceProvider（）。这是上面链接中的海报用来实现这个的代码：

public class RuntimeServiceProvider : IServiceProvider, ITypeDescriptorContext
{
    #region IServiceProvider Members

    object IServiceProvider.GetService(Type serviceType)
    {
        if (serviceType == typeof(IWindowsFormsEditorService))
        {
            return new WindowsFormsEditorService();
        }

        return null;
    }

    class WindowsFormsEditorService : IWindowsFormsEditorService
    {
        #region IWindowsFormsEditorService Members

        public void DropDownControl(Control control)
        {
        }

        public void CloseDropDown()
        {
        }

        public System.Windows.Forms.DialogResult ShowDialog(Form dialog)
        {
            return dialog.ShowDialog();
        }

        #endregion
    }

    #endregion

    #region ITypeDescriptorContext Members

    public void OnComponentChanged()
    {
    }

    public IContainer Container
    {
        get { return null; }
    }

    public bool OnComponentChanging()
    {
        return true; // true to keep changes, otherwise false
    }

    public object Instance
    {
        get { return null; }
    }

    public PropertyDescriptor PropertyDescriptor
    {
        get { return null; }
    }

    #endregion
}

Answer 2

由于我无法发表评论，我将在此发布：

您可以通过在WindowsFormsEditorService.ShowDialog中的CollectionEditor的okButton上添加Click事件来获取DialogResult

public System.Windows.Forms.DialogResult ShowDialog(Form dialog)
{
    ((System.Windows.Forms.Button)dialog.Controls.Find("okButton", true)[0]).Click += WindowsFormsEditorService_Click;
    return dialog.ShowDialog();
}

...

private void WindowsFormsEditorService_Click(object sender, EventArgs e)
{
    dr = DialogResult.OK;
}

有没有办法在属性网格之外使用CollectionEditor？

2 个答案: