我需要通过向控件添加一个DataSource来将此处理程序附加到RadListView列创建。将未知类型的通用方法事件处理程序附加到
public void GenericColumnCreatingHandler<T>(object sender, ListViewColumnCreatingEventArgs e)
{
e.Column.Visible = BaseEntity<int>.MemberVisibility<T>
(e.Column.FieldName, TelerikPropertyVisibilityAttribute.VisibilityTypeEnum.BaseDetails);
e.Column.HeaderText = CaricaTestoLocale(e.Column.HeaderText, "Col_" + e.Column.HeaderText);
e.Column.BestFit();
e.Column.AutoSizeMode = ListViewBestFitColumnMode.AllCells;
}
我的问题是,我需要进行处理,从这个其他泛型方法附:
private void PopulateRecord(TipoTabellaBase tipo)
{
Type generic = typeof(CommonTableService<>);
Type[] typeArgs = { tipo.Tipo };
var constructed = generic.MakeGenericType(typeArgs);
var instance = Activator.CreateInstance(constructed);
if (instance == null)
return;
MethodInfo getEntities = constructed.GetMethod("GetEntitiesWithNoParameters");
//getEntities = getEntities.MakeGenericMethod(typeArgs);
var result = (IEnumerable<BaseEntity<int>>)getEntities.Invoke(instance, null);
lvRecords.ColumnCreating += base.GenericColumnCreatingHandler<BaseEntity<int>>;
lvRecords.DataSource = result;
BestFit(lvRecords);
generic = null;
typeArgs = null;
constructed = null;
getEntities = null;
instance = null;
}
有问题的行是这一个:
lvRecords.ColumnCreating += base.GenericColumnCreatingHandler<BaseEntity<int>>
因为BaseEntity是EF基地键入所有实体,但这不足以满足BaseEntity.MemberVisibility方法;这个方法需要知道确切的实体类型来设置基于特定自定义属性的可见属性(当然还有网格列)。
问题是:我可以调用base.GenericColumnCreatingHandler,其中T是TipoTabellaBase tipo.Tipo(类型)在设计时不知道类型?
任何帮助将不胜感激! 感谢提前。
丹尼尔
“from this other generic method” - 'PopulateRecord' is * not * a“generic method”(在C#意义上)。 –
是O.R. Mapper,你是对的。但是,我认为,这还不是真正的问题... –