Question

我有一个.dll文件，我已经实现了自定义控件和类型编辑器。

UITypeEditor在.dll文件中工作。但是当我将.dll导入主项目时，它会给我一个对象引用错误。

我的自定义表单和类型编辑器如下：

形式：

public partial class MyBrowseForm<TParentEntity> : Base4Form, IBaseBrowseDialog where TParentEntity : class
{

[Category("Base4Data")]
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
    [Editor(typeof(BdFormTypeEditor), typeof(UITypeEditor))]       
    [TypeConverter(typeof(CollectionConverter))]
    public BindingList<MySearchFields> MySearchFieldsCollection
    {
        get => _mySearchFieldsCollection;
        set => _mySearchFieldsCollection = value;
    }

[Browsable(false)]
    public Type MyGenericType => typeof(TParentEntity);
}

UITypeEdior

internal class BdFormTypeEditor : UITypeEditor
{
    public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
    {
        return UITypeEditorEditStyle.Modal;
    }

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

        var svc = provider?.GetService(typeof(IWindowsFormsEditorService))
            as IWindowsFormsEditorService;

        if (context != null)
        {
            var genericType = ((dynamic) context.Instance).MyGenericType;



            var editorFormType = typeof(MyEditorForm<>);

            var editorFormInstance = editorFormType?.MakeGenericType(genericType);
            if (svc != null)
            {
                using (var f = (Form) Activator.CreateInstance(editorFormInstance, null))
                {
                    f.GetType().GetProperty("List")?.SetValue(f, value);
                    if (svc.ShowDialog(f) == DialogResult.OK)
                        return ((dynamic) f).List;
                }
            }
            else
            {
                using (var f = (Form) Activator.CreateInstance(editorFormInstance, null))
                {
                    f.GetType().GetProperty("List")?.SetValue(f, value);
                    if (svc.ShowDialog(f) == DialogResult.OK)
                        return ((dynamic) f).List;
                }
            }
        }
        return base.EditValue(context, provider, value);
    }
}

我创建了另一个UITypeEditor和一个从Typeeditor打开的Form。（使用上述声明）这次我只添加了以下代码，并且我没有将值传递给表单中的任何属性。我得到了同样的错误。

var genericType = (Type)context?.Instance.GetPropValue("MyGenericType");

        //var genericArgument = (Type)myGenericTypeProperty.GetValue(context.Instance);
        var editorFormType = typeof(MyEditorForm<>);
        //var genericArguments = new[] { genericArgument };
        var editorFormInstance = editorFormType.MakeGenericType(genericType);

        if (svc != null)
        {
            using (var f = Form)Activator.CreateInstance(editorFormInstance))

所以这在原始解决方案中有效但是当我构建并将dll导入另一个解决方案时，我得到一个对象引用..

您认为我在这里失踪了什么？任何帮助表示赞赏。

UIType Editor抛出对象引用

0 个答案: