ViewComponent in .Net Core

Hi,

I have created dynamic menu using ViewComponent. and it's working with return blank view() but if I am returning some view(Model). It's throw an error.

InvalidOperationException: The model item passed into the ViewDataDictionary is of type 'A', but this ViewDataDictionary instance requires a model item of type 'B'.

ViewComponent Code

public async Task InvokeAsync()

{

int roleId = (int)HttpContext.Session.GetInt32("RoleId");

DashboardModel ObjMenuModel = new DashboardModel();

ObjMenuModel.MainMenuModel = new List();

ObjMenuModel.MainMenuModel = GetMainMenu(roleId);

ObjMenuModel.SubMenuModel = new List();

ObjMenuModel.SubMenuModel = GetSubMenu();

ViewBag.ObjMenuModel = ObjMenuModel;

var model = new ViewComponentModel(ViewBag.ObjMenuModel);

return await Task.FromResult(View(model));

}

public List GetMainMenu(int roleId)

{

CellDbHelper DbHelper = new CellDbHelper();

List ObjMainMenu = new List();

ObjMainMenu = DbHelper.GetManuDetailByRoleId(roleId);

return ObjMainMenu;

}

public List GetSubMenu()

{

CellDbHelper DbHelper = new CellDbHelper();

List ObjSubMenu = new List();

ObjSubMenu = DbHelper.GetAllManuDetail();

return ObjSubMenu;

}

Controller Code

CellDbHelper Helper = new CellDbHelper();

userModel = Helper.GetUserById(int.Parse(Id.ToString()));

return View(userModel);

2 Replies

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Nitin Bhardwaj9y ago
ViewComponent Code

public async Task InvokeAsync()
{
int roleId = (int)HttpContext.Session.GetInt32("RoleId");
DashboardModel ObjMenuModel = new DashboardModel();
ObjMenuModel.MainMenuModel = new List();
ObjMenuModel.MainMenuModel = GetMainMenu(roleId);
ObjMenuModel.SubMenuModel = new List();
ObjMenuModel.SubMenuModel = GetSubMenu();
ViewBag.ObjMenuModel = ObjMenuModel;
var model = new ViewComponentModel(ViewBag.ObjMenuModel);
return await Task.FromResult(View(model));
}
public List GetMainMenu(int roleId)
{
CellDbHelper DbHelper = new CellDbHelper();
List ObjMainMenu = new List();
ObjMainMenu = DbHelper.GetManuDetailByRoleId(roleId);
return ObjMainMenu;
}
public List GetSubMenu()
{
CellDbHelper DbHelper = new CellDbHelper();
List ObjSubMenu = new List();
ObjSubMenu = DbHelper.GetAllManuDetail();
return ObjSubMenu;
}

Controller Code

CellDbHelper Helper = new CellDbHelper();
userModel = Helper.GetUserById(int.Parse(Id.ToString()));
return View(userModel);
Nigel Fernandes9y ago
Hi can you share controller and view code ?