Example to create multiple types if Cascade Dropdown list of different types ( single select / multiple select items ):
public class ProductMyListType
{
public string ID { get; set; }
public string ComplexID { get; set; }
public string Name { get; set; }
public bool Selected { get; set; }
}
public interfaceclass IProductDropDownItem
{
int name public string Value { get; set; }
Product GetProduct(); public string Name { get; set; }
}
public class ProductA : IProduct
{
public ProductA(stringclass pn)AdminItem
{
this.name = pn;
}
public string nameID { get; set; }
public Product GetProduct()
{
return new Product();
public string AdminName { get; set; }
}
public class ProductBMerchantItem
: IProduct
{
public string nameID { get; set; }
public ProductB(string pn)
MerchantName { get; set; {}
this.name = pn;
}
public Productclass GetProduct()CustomerItem
{
return new Product(); public string ID { get; set; }
public string CustomerName { get; set; }
}
} public enum DefaultDDItems
{
public interface IProductManager
{
ProductA PrepareProductA(string productName); ALL = 0,
ProductB PrepareProductB(string productName); All_Selected = 1,
} NoDefault,
public class ProductManager : IProductManager
{
ProductA PrepareProductA(string productName)
{
return new ProductA(productName);
}First_Selected,
ProductB PrepareProductB(string productName)
{
return new ProductB(productName);
}CurrentMonth,
}
CurrentYear
}
public interface IDropDown
{
MultiSelectList GetMultiSelectDropDown();
MultiSelectList GetMultiSelectDropDown(DefaultDDItems defaultDdItem);
List<SelectListItem> GetSingleSelectDropDown();
List<SelectListItem> GetSingleSelectDropDown(DefaultDDItems defaultDdItem);
}
public class AdminLevelDropDown : IDropDown
{
private List<AdminItem> _adminItemes;
private string[] _selectedIds;
public AdminLevelDropDown()
{
}
public AdminLevelDropDown(List<AdminItem> items)
{
this._adminItemes = items;
}
public AdminLevelDropDown(List<AdminItem> items, string[] defaultSelectedItems)
{
this._adminItemes = items;
this._selectedIds = defaultSelectedItems;
}
public MultiSelectList GetMultiSelectDropDown()
{
return GetMultiSelectDropDown(DefaultDDItems.NoDefault);
}
public MultiSelectList GetMultiSelectDropDown(DefaultDDItems defaultDdItem)
{
var mylist = new List<MyListType>();
if (_adminItemes == null)
{
return new MultiSelectList(mylist, "ID", "Name");
}
if (!_adminItemes.Any())
{
return new MultiSelectList(mylist, "ID", "Name");
}
switch (defaultDdItem)
{
case DefaultDDItems.ALL:
mylist.Add(new MyListType()
{
Name = "All",
ID = "0"
});
break;
case DefaultDDItems.All_Selected:
mylist.Add(new MyListType()
{
Name = "All",
ID = String.Join(",", _adminItemes)
});
break;
// Other switch cases can be implemented here
}
mylist.AddRange(_adminItemes.Select(i => new MyListType()
{
Name = i.AdminName,
ID = i.ID
}).ToList());
return new MultiSelectList(mylist, "ID", "Name", _selectedIds);
}
public List<SelectListItem> GetSingleSelectDropDown()
{
return GetSingleSelectDropDown(DefaultDDItems.NoDefault);
}
public List<SelectListItem> GetSingleSelectDropDown(DefaultDDItems defaultDdItem)
{
var mylist = new List<SelectListItem>();
if (_adminItemes == null)
{
return new List<SelectListItem>(0);
}
if (!_adminItemes.Any())
{
return new List<SelectListItem>(0);
}
switch (defaultDdItem)
{
case DefaultDDItems.ALL:
mylist.Add(new SelectListItem()
{
Value = "All",
Text = "0"
});
break;
case DefaultDDItems.All_Selected:
mylist.Add(new SelectListItem()
{
Value = "All",
Text = String.Join(",", _adminItemes)
});
break;
}
mylist.AddRange(_adminItemes.Select(i => new SelectListItem()
{
Text = i.AdminName,
Value = i.ID,
Selected = _selectedIds.FirstOrDefault() == i.ID
}).ToList());
return mylist;
}
}
public class MerchantLevelDropDown : IDropDown
{
private List<MerchantItem> _merchantItemes;
private string[] _selectedIds;
public MerchantLevelDropDown()
{
}
public MerchantLevelDropDown(List<MerchantItem> items)
{
this._merchantItemes = items;
}
public MerchantLevelDropDown(List<MerchantItem> items, string[] defaultSelectedItems)
{
this._merchantItemes = items;
this._selectedIds = defaultSelectedItems;
}
public MultiSelectList GetMultiSelectDropDown()
{
return GetMultiSelectDropDown(DefaultDDItems.NoDefault);
}
public MultiSelectList GetMultiSelectDropDown(DefaultDDItems defaultDdItem)
{
var mylist = new List<MyListType>();
if (_merchantItemes == null)
{
return new MultiSelectList(mylist, "ID", "Name");
}
if (!_merchantItemes.Any())
{
return new MultiSelectList(mylist, "ID", "Name");
}
switch (defaultDdItem)
{
case DefaultDDItems.ALL:
mylist.Add(new MyListType()
{
Name = "All",
ID = "0"
});
break;
case DefaultDDItems.All_Selected:
mylist.Add(new MyListType()
{
Name = "All",
ID = String.Join(",", _merchantItemes)
});
break;
}
mylist.AddRange(_merchantItemes.Select(i => new MyListType()
{
Name = i.MerchantName,
ID = i.ID
}).ToList());
return new MultiSelectList(mylist, "ID", "Name", _selectedIds);
}
public List<SelectListItem> GetSingleSelectDropDown()
{
return GetSingleSelectDropDown(DefaultDDItems.NoDefault);
}
public List<SelectListItem> GetSingleSelectDropDown(DefaultDDItems defaultDdItem)
{
var mylist = new List<SelectListItem>();
if (_merchantItemes == null)
{
return new List<SelectListItem>(0);
}
if (!_merchantItemes.Any())
{
return new List<SelectListItem>(0);
}
switch (defaultDdItem)
{
case DefaultDDItems.ALL:
mylist.Add(new SelectListItem()
{
Value = "All",
Text = "0"
});
break;
case DefaultDDItems.All_Selected:
mylist.Add(new SelectListItem()
{
Value = "All",
Text = String.Join(",", _merchantItemes)
});
break;
}
mylist.AddRange(_merchantItemes.Select(i => new SelectListItem()
{
Text = i.MerchantName,
Value = i.ID,
Selected = _selectedIds.FirstOrDefault() == i.ID
}).ToList());
return mylist;
}
}
public class CustomerLevelDropDown : IDropDown
{
private List<CustomerItem> _customerItemes;
private string[] _selectedIds;
public CustomerLevelDropDown()
{
}
public CustomerLevelDropDown(List<CustomerItem> items)
{
this._customerItemes = items;
}
public CustomerLevelDropDown(List<CustomerItem> items, string[] defaultSelectedItems)
{
this._customerItemes = items;
this._selectedIds = defaultSelectedItems;
}
public MultiSelectList GetMultiSelectDropDown()
{
return GetMultiSelectDropDown(DefaultDDItems.NoDefault);
}
public MultiSelectList GetMultiSelectDropDown(DefaultDDItems defaultDdItem)
{
var mylist = new List<MyListType>();
if (_customerItemes == null)
{
return new MultiSelectList(mylist, "ID", "Name");
}
if (!_customerItemes.Any())
{
return new MultiSelectList(mylist, "ID", "Name");
}
switch (defaultDdItem)
{
case DefaultDDItems.ALL:
mylist.Add(new MyListType()
{
Name = "All",
ID = "0"
});
break;
case DefaultDDItems.All_Selected:
mylist.Add(new MyListType()
{
Name = "All",
ID = String.Join(",", _customerItemes)
});
break;
}
mylist.AddRange(_customerItemes.Select(i => new MyListType()
{
Name = i.CustomerName,
ID = i.ID
}).ToList());
return new MultiSelectList(mylist, "ID", "Name", _selectedIds);
}
public List<SelectListItem> GetSingleSelectDropDown()
{
return GetSingleSelectDropDown(DefaultDDItems.NoDefault);
}
public List<SelectListItem> GetSingleSelectDropDown(DefaultDDItems defaultDdItem)
{
var mylist = new List<SelectListItem>();
if (_customerItemes == null)
{
return new List<SelectListItem>(0);
}
if (!_customerItemes.Any())
{
return new List<SelectListItem>(0);
}
switch (defaultDdItem)
{
case DefaultDDItems.ALL:
mylist.Add(new SelectListItem()
{
Value = "All",
Text = "0"
});
break;
case DefaultDDItems.All_Selected:
mylist.Add(new SelectListItem()
{
Value = "All",
Text = String.Join(",", _customerItemes)
});
break;
}
mylist.AddRange(_customerItemes.Select(i => new SelectListItem()
{
Text = i.CustomerName,
Value = i.ID,
Selected = _selectedIds.FirstOrDefault() == i.ID
}).ToList());
return mylist;
}
}
public interface IDropdownFactory
{
AdminLevelDropDown GetMultiSelect_AdminDropDown();
AdminLevelDropDown GetMultiSelect_AdminDropDown(List<AdminItem> items);
AdminLevelDropDown GetMultiSelect_AdminDropDown(List<AdminItem> items, string[] selecteditems);
AdminLevelDropDown GetSingleSelect_AdminDropDown();
AdminLevelDropDown GetSingleSelect_AdminDropDown(List<AdminItem> items);
AdminLevelDropDown GetSingleSelect_AdminDropDown(List<AdminItem> items, string[] selectedItems);
MerchantLevelDropDown GetMultiSelect_MerchantDropDown();
MerchantLevelDropDown GetMultiSelect_MerchantDropDown(List<MerchantItem> items);
MerchantLevelDropDown GetMultiSelect_MerchantDropDown(List<MerchantItem> items, string[] selecteditems);
MerchantLevelDropDown GetSingleSelect_MerchantDropDown();
MerchantLevelDropDown GetSingleSelect_MerchantDropDown(List<MerchantItem> items);
MerchantLevelDropDown GetSingleSelect_MerchantDropDown(List<MerchantItem> items, string[] selectedItems);
CustomerLevelDropDown GetMultiSelect_CustomerDropDown();
CustomerLevelDropDown GetMultiSelect_CustomerDropDown(List<CustomerItem> items);
CustomerLevelDropDown GetMultiSelect_CustomerDropDown(List<CustomerItem> items, string[] selecteditems);
CustomerLevelDropDown GetSingleSelect_CustomerDropDown();
CustomerLevelDropDown GetSingleSelect_CustomerDropDown(List<CustomerItem> items);
CustomerLevelDropDown GetSingleSelect_CustomerDropDown(List<CustomerItem> items, string[] selectedItems);
}
public class DropDownFactory : IDropdownFactory
{
public AdminLevelDropDown GetMultiSelect_AdminDropDown()
{
return new AdminLevelDropDown();
}
public AdminLevelDropDown GetMultiSelect_AdminDropDown(List<AdminItem> items)
{
return new AdminLevelDropDown(items);
}
public AdminLevelDropDown GetMultiSelect_AdminDropDown(List<AdminItem> items, string[] selecteditems)
{
return new AdminLevelDropDown(items, selecteditems);
}
public AdminLevelDropDown GetSingleSelect_AdminDropDown()
{
return new AdminLevelDropDown();
}
public AdminLevelDropDown GetSingleSelect_AdminDropDown(List<AdminItem> items)
{
return new AdminLevelDropDown(items);
}
public AdminLevelDropDown GetSingleSelect_AdminDropDown(List<AdminItem> items, string[] selectedItems)
{
return new AdminLevelDropDown(items, selectedItems);
}
public MerchantLevelDropDown GetMultiSelect_MerchantDropDown()
{
return new MerchantLevelDropDown();
}
public MerchantLevelDropDown GetMultiSelect_MerchantDropDown(List<MerchantItem> items)
{
return new MerchantLevelDropDown(items);
}
public MerchantLevelDropDown GetMultiSelect_MerchantDropDown(List<MerchantItem> items, string[] selecteditems)
{
return new MerchantLevelDropDown(items, selecteditems);
}
public MerchantLevelDropDown GetSingleSelect_MerchantDropDown()
{
return new MerchantLevelDropDown();
}
public MerchantLevelDropDown GetSingleSelect_MerchantDropDown(List<MerchantItem> items)
{
return new MerchantLevelDropDown(items);
}
public MerchantLevelDropDown GetSingleSelect_MerchantDropDown(List<MerchantItem> items, string[] selectedItems)
{
return new MerchantLevelDropDown(items, selectedItems);
}
public CustomerLevelDropDown GetMultiSelect_CustomerDropDown()
{
return new CustomerLevelDropDown();
}
public CustomerLevelDropDown GetMultiSelect_CustomerDropDown(List<CustomerItem> items)
{
return new CustomerLevelDropDown(items);
}
public CustomerLevelDropDown GetMultiSelect_CustomerDropDown(List<CustomerItem> items, string[] selecteditems)
{
return new CustomerLevelDropDown(items, selecteditems);
}
public CustomerLevelDropDown GetSingleSelect_CustomerDropDown()
{
return new CustomerLevelDropDown();
}
public CustomerLevelDropDown GetSingleSelect_CustomerDropDown(List<CustomerItem> items)
{
return new CustomerLevelDropDown(items);
}
public CustomerLevelDropDown GetSingleSelect_CustomerDropDown(List<CustomerItem> items, string[] selectedItems)
{
return new CustomerLevelDropDown(items, selectedItems);
}
}
IoC usingUsing AutoFac:
var container = new Container();
container.RegisterType<ProductManager>RegisterType<DropDownFactory>().As<IProductManager>As<IDropdownFactory>().InstancePerhttpRequestInstancePerHttpRequest();
public class HomeController : Controller
{
private IProductManager _productManager; public IDropdownFactory _dropdownFactory;
public HomeController(IProductManagerIDropdownFactory productManagerdropdownFactory)
{
this._productManager_dropdownFactory = productManager;dropdownFactory;
}
public ViewResult GetProductAGetMultiSelect_AdminDropDown(string[] selectedids)
{
var modeladminItems = _productManager_adminRepo.PrepareProductAGetAdminItems("webapplication");
var adminDD = _dropdownFactory.GetMultiSelect_AdminDropDown(adminItems, selectedids);
return View(modeladminDD);
}
public ViewResult GetProductBGetSingleSelect_AdminDropDown(string[] selectedids)
{
var modeladminItems = _productManager_adminRepo.PrepareProductBGetAdminItems("MOBILE");
var adminDD = _dropdownFactory.GetSingleSelect_AdminDropDown(adminItems, selectedids);
return View(modeladminDD);
}
public ViewResult GetMultiSelect_MerchantDropDown(string[] selectedids)
{
var merchantItems = _merchantRepo.GetMerchantItems();
var merchantDD = _dropdownFactory.GetMultiSelect_MerchantDropDown(merchantItems, selectedids);
return View(merchantDD);
}
public ViewResult GetSingleSelect_MerchantDropDown(string[] selectedids)
{
var merchantItems = _merchantRepo.GetMerchantItems();
var merchantDD = _dropdownFactory.GetSingleSelect_MerchantDropDown(merchantItems, selectedids);
return View(merchantDD);
}
public ViewResult GetMultiSelect_CustomerDropDown(string[] selectedids)
{
var customerItems = _customerRepo.GetCustomerItems();
var merchantDD = _dropdownFactory.GetMultiSelect_CustomerDropDown(customerItems, selectedids);
return View(merchantDD);
}
public ViewResult GetSingleSelect_CustomerDropDown(string[] selectedids)
{
var customerItems = _customerRepo.GetCustomerItems();
var merchantDD = _dropdownFactory.GetSingleSelect_CustomerDropDown(customerItems, selectedids);
return View(merchantDD);
}
}
