How to work with data that gets returned by an IEnumerable method












0














I'm trying to create a simple view (paging, sorting and filtering).
The method I have that does that looks something like this:



public IEnumerable<VehicleMakeEntity> GetMake(int index, int count, 
Expression<Func<VehicleMakeEntity, int>> orderLambda)
{
var data = _makeRepository.SelectListMake(index, count, orderLambda).AsQueryable();
return data;
}


You see it call another method from a repository, which looks the same



private readonly IQueryable<VehicleMakeEntity> _source;

public MakeRepository(ProjectDbContext context)
{
this.context = context;
_source = this.context.VehicleMake;
}

public IEnumerable<VehicleMakeEntity> SelectListMake(int index, int count,
Expression<Func<VehicleMakeEntity, int>> orderLambda)
{
return _source.Skip(index * count).Take(count).OrderBy(orderLambda);
}


In my controller I call the method



public IActionResult Make()
{
var data = _vehicleService.GetMake(1, 10, (p => p.Id));

return View(data);
}


And it returns some data I do not know how to work with as seen here





I also generated a View based on that controller method, a basic List View which you can see here



@model IEnumerable<Data.Entities.VehicleMakeEntity>
@using NonFactors.Mvc.Grid;
@{
ViewData["Title"] = "Make View";
}
<h2>Make View</h2>

<p>
<a asp-action="Create">Create New</a>
</p>
<table class="table">
<thead>
<tr>
<th>
@Html.DisplayNameFor(model => model.Id)
</th>
<th>
@Html.DisplayNameFor(model => model.Name)
</th>
<th>
@Html.DisplayNameFor(model => model.Abrv)
</th>
<th></th>
</tr>
</thead>
<tbody>
@foreach (var item in Model)
{
<tr>
<td>
@Html.DisplayFor(modelItem => item.Id)
</td>
<td>
@Html.DisplayFor(modelItem => item.Name)
</td>
<td>
@Html.DisplayFor(modelItem => item.Abrv)
</td>
<td>
@Html.ActionLink("Edit", "Edit", new { /* id=item.PrimaryKey */ }) |
@Html.ActionLink("Details", "Details", new { /* id=item.PrimaryKey */ }) |
@Html.ActionLink("Delete", "Delete", new { /* id=item.PrimaryKey */ })
</td>
</tr>
}
</tbody>




But nothing is displaying on the site. Am I supposed to do something with the returned data? What am I doing wrong? I checked if the entities aren't getting the information from the database, they are.










share|improve this question




















  • 2




    How many records are in your db (your code returns records 11 to 20). And as a side note, your .OrderBy() should be before .Skip()
    – user3559349
    Nov 20 at 5:34












  • So that was the problem. But why does it do that? I thought the second parameter limited how many records it pulls at a given time.
    – TimmyNeutron
    Nov 20 at 5:41












  • Because index=1 and .Skip(index * count) equates to .Skip(10) which means start at record number 11
    – user3559349
    Nov 20 at 5:52
















0














I'm trying to create a simple view (paging, sorting and filtering).
The method I have that does that looks something like this:



public IEnumerable<VehicleMakeEntity> GetMake(int index, int count, 
Expression<Func<VehicleMakeEntity, int>> orderLambda)
{
var data = _makeRepository.SelectListMake(index, count, orderLambda).AsQueryable();
return data;
}


You see it call another method from a repository, which looks the same



private readonly IQueryable<VehicleMakeEntity> _source;

public MakeRepository(ProjectDbContext context)
{
this.context = context;
_source = this.context.VehicleMake;
}

public IEnumerable<VehicleMakeEntity> SelectListMake(int index, int count,
Expression<Func<VehicleMakeEntity, int>> orderLambda)
{
return _source.Skip(index * count).Take(count).OrderBy(orderLambda);
}


In my controller I call the method



public IActionResult Make()
{
var data = _vehicleService.GetMake(1, 10, (p => p.Id));

return View(data);
}


And it returns some data I do not know how to work with as seen here





I also generated a View based on that controller method, a basic List View which you can see here



@model IEnumerable<Data.Entities.VehicleMakeEntity>
@using NonFactors.Mvc.Grid;
@{
ViewData["Title"] = "Make View";
}
<h2>Make View</h2>

<p>
<a asp-action="Create">Create New</a>
</p>
<table class="table">
<thead>
<tr>
<th>
@Html.DisplayNameFor(model => model.Id)
</th>
<th>
@Html.DisplayNameFor(model => model.Name)
</th>
<th>
@Html.DisplayNameFor(model => model.Abrv)
</th>
<th></th>
</tr>
</thead>
<tbody>
@foreach (var item in Model)
{
<tr>
<td>
@Html.DisplayFor(modelItem => item.Id)
</td>
<td>
@Html.DisplayFor(modelItem => item.Name)
</td>
<td>
@Html.DisplayFor(modelItem => item.Abrv)
</td>
<td>
@Html.ActionLink("Edit", "Edit", new { /* id=item.PrimaryKey */ }) |
@Html.ActionLink("Details", "Details", new { /* id=item.PrimaryKey */ }) |
@Html.ActionLink("Delete", "Delete", new { /* id=item.PrimaryKey */ })
</td>
</tr>
}
</tbody>




But nothing is displaying on the site. Am I supposed to do something with the returned data? What am I doing wrong? I checked if the entities aren't getting the information from the database, they are.










share|improve this question




















  • 2




    How many records are in your db (your code returns records 11 to 20). And as a side note, your .OrderBy() should be before .Skip()
    – user3559349
    Nov 20 at 5:34












  • So that was the problem. But why does it do that? I thought the second parameter limited how many records it pulls at a given time.
    – TimmyNeutron
    Nov 20 at 5:41












  • Because index=1 and .Skip(index * count) equates to .Skip(10) which means start at record number 11
    – user3559349
    Nov 20 at 5:52














0












0








0







I'm trying to create a simple view (paging, sorting and filtering).
The method I have that does that looks something like this:



public IEnumerable<VehicleMakeEntity> GetMake(int index, int count, 
Expression<Func<VehicleMakeEntity, int>> orderLambda)
{
var data = _makeRepository.SelectListMake(index, count, orderLambda).AsQueryable();
return data;
}


You see it call another method from a repository, which looks the same



private readonly IQueryable<VehicleMakeEntity> _source;

public MakeRepository(ProjectDbContext context)
{
this.context = context;
_source = this.context.VehicleMake;
}

public IEnumerable<VehicleMakeEntity> SelectListMake(int index, int count,
Expression<Func<VehicleMakeEntity, int>> orderLambda)
{
return _source.Skip(index * count).Take(count).OrderBy(orderLambda);
}


In my controller I call the method



public IActionResult Make()
{
var data = _vehicleService.GetMake(1, 10, (p => p.Id));

return View(data);
}


And it returns some data I do not know how to work with as seen here





I also generated a View based on that controller method, a basic List View which you can see here



@model IEnumerable<Data.Entities.VehicleMakeEntity>
@using NonFactors.Mvc.Grid;
@{
ViewData["Title"] = "Make View";
}
<h2>Make View</h2>

<p>
<a asp-action="Create">Create New</a>
</p>
<table class="table">
<thead>
<tr>
<th>
@Html.DisplayNameFor(model => model.Id)
</th>
<th>
@Html.DisplayNameFor(model => model.Name)
</th>
<th>
@Html.DisplayNameFor(model => model.Abrv)
</th>
<th></th>
</tr>
</thead>
<tbody>
@foreach (var item in Model)
{
<tr>
<td>
@Html.DisplayFor(modelItem => item.Id)
</td>
<td>
@Html.DisplayFor(modelItem => item.Name)
</td>
<td>
@Html.DisplayFor(modelItem => item.Abrv)
</td>
<td>
@Html.ActionLink("Edit", "Edit", new { /* id=item.PrimaryKey */ }) |
@Html.ActionLink("Details", "Details", new { /* id=item.PrimaryKey */ }) |
@Html.ActionLink("Delete", "Delete", new { /* id=item.PrimaryKey */ })
</td>
</tr>
}
</tbody>




But nothing is displaying on the site. Am I supposed to do something with the returned data? What am I doing wrong? I checked if the entities aren't getting the information from the database, they are.










share|improve this question















I'm trying to create a simple view (paging, sorting and filtering).
The method I have that does that looks something like this:



public IEnumerable<VehicleMakeEntity> GetMake(int index, int count, 
Expression<Func<VehicleMakeEntity, int>> orderLambda)
{
var data = _makeRepository.SelectListMake(index, count, orderLambda).AsQueryable();
return data;
}


You see it call another method from a repository, which looks the same



private readonly IQueryable<VehicleMakeEntity> _source;

public MakeRepository(ProjectDbContext context)
{
this.context = context;
_source = this.context.VehicleMake;
}

public IEnumerable<VehicleMakeEntity> SelectListMake(int index, int count,
Expression<Func<VehicleMakeEntity, int>> orderLambda)
{
return _source.Skip(index * count).Take(count).OrderBy(orderLambda);
}


In my controller I call the method



public IActionResult Make()
{
var data = _vehicleService.GetMake(1, 10, (p => p.Id));

return View(data);
}


And it returns some data I do not know how to work with as seen here





I also generated a View based on that controller method, a basic List View which you can see here



@model IEnumerable<Data.Entities.VehicleMakeEntity>
@using NonFactors.Mvc.Grid;
@{
ViewData["Title"] = "Make View";
}
<h2>Make View</h2>

<p>
<a asp-action="Create">Create New</a>
</p>
<table class="table">
<thead>
<tr>
<th>
@Html.DisplayNameFor(model => model.Id)
</th>
<th>
@Html.DisplayNameFor(model => model.Name)
</th>
<th>
@Html.DisplayNameFor(model => model.Abrv)
</th>
<th></th>
</tr>
</thead>
<tbody>
@foreach (var item in Model)
{
<tr>
<td>
@Html.DisplayFor(modelItem => item.Id)
</td>
<td>
@Html.DisplayFor(modelItem => item.Name)
</td>
<td>
@Html.DisplayFor(modelItem => item.Abrv)
</td>
<td>
@Html.ActionLink("Edit", "Edit", new { /* id=item.PrimaryKey */ }) |
@Html.ActionLink("Details", "Details", new { /* id=item.PrimaryKey */ }) |
@Html.ActionLink("Delete", "Delete", new { /* id=item.PrimaryKey */ })
</td>
</tr>
}
</tbody>




But nothing is displaying on the site. Am I supposed to do something with the returned data? What am I doing wrong? I checked if the entities aren't getting the information from the database, they are.







c# asp.net-core dependency-injection entity-framework-core






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 20 at 6:23









Foo

1




1










asked Nov 20 at 5:04









TimmyNeutron

258




258








  • 2




    How many records are in your db (your code returns records 11 to 20). And as a side note, your .OrderBy() should be before .Skip()
    – user3559349
    Nov 20 at 5:34












  • So that was the problem. But why does it do that? I thought the second parameter limited how many records it pulls at a given time.
    – TimmyNeutron
    Nov 20 at 5:41












  • Because index=1 and .Skip(index * count) equates to .Skip(10) which means start at record number 11
    – user3559349
    Nov 20 at 5:52














  • 2




    How many records are in your db (your code returns records 11 to 20). And as a side note, your .OrderBy() should be before .Skip()
    – user3559349
    Nov 20 at 5:34












  • So that was the problem. But why does it do that? I thought the second parameter limited how many records it pulls at a given time.
    – TimmyNeutron
    Nov 20 at 5:41












  • Because index=1 and .Skip(index * count) equates to .Skip(10) which means start at record number 11
    – user3559349
    Nov 20 at 5:52








2




2




How many records are in your db (your code returns records 11 to 20). And as a side note, your .OrderBy() should be before .Skip()
– user3559349
Nov 20 at 5:34






How many records are in your db (your code returns records 11 to 20). And as a side note, your .OrderBy() should be before .Skip()
– user3559349
Nov 20 at 5:34














So that was the problem. But why does it do that? I thought the second parameter limited how many records it pulls at a given time.
– TimmyNeutron
Nov 20 at 5:41






So that was the problem. But why does it do that? I thought the second parameter limited how many records it pulls at a given time.
– TimmyNeutron
Nov 20 at 5:41














Because index=1 and .Skip(index * count) equates to .Skip(10) which means start at record number 11
– user3559349
Nov 20 at 5:52




Because index=1 and .Skip(index * count) equates to .Skip(10) which means start at record number 11
– user3559349
Nov 20 at 5:52












1 Answer
1






active

oldest

votes


















0














Can you check with below code.



public IActionResult Make()
{
var data = _vehicleService.GetMake(1, 10, (p => p.Id)).ToList();

return View(data);
}


Also try to remove AsQueryable()



public IEnumerable<VehicleMakeEntity> GetMake(int index, int count, Expression<Func<VehicleMakeEntity, int>> orderLambda)
{
return _makeRepository.SelectListMake(index, count, orderLambda);
}





share|improve this answer





















  • I just did, it returns data Count = 0 now. It cannot be 0 as I foreached all the entities and they always return with the database value.
    – TimmyNeutron
    Nov 20 at 5:19










  • Ok, First check in repository with list. Getting any data from database. public List<VehicleMakeEntity> SelectListMake(int index, int count, Expression<Func<VehicleMakeEntity, int>> orderLambda) { var VehicleMakeEntity = _source.Skip(index * count).Take(count).OrderBy(orderLambda).ToList(); return VehicleMakeEntity; }
    – A.M. Patel
    Nov 20 at 5:33












  • Check VehicleMakeEntity varible any list return or not.
    – A.M. Patel
    Nov 20 at 5:36











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1 Answer
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1 Answer
1






active

oldest

votes









active

oldest

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active

oldest

votes









0














Can you check with below code.



public IActionResult Make()
{
var data = _vehicleService.GetMake(1, 10, (p => p.Id)).ToList();

return View(data);
}


Also try to remove AsQueryable()



public IEnumerable<VehicleMakeEntity> GetMake(int index, int count, Expression<Func<VehicleMakeEntity, int>> orderLambda)
{
return _makeRepository.SelectListMake(index, count, orderLambda);
}





share|improve this answer





















  • I just did, it returns data Count = 0 now. It cannot be 0 as I foreached all the entities and they always return with the database value.
    – TimmyNeutron
    Nov 20 at 5:19










  • Ok, First check in repository with list. Getting any data from database. public List<VehicleMakeEntity> SelectListMake(int index, int count, Expression<Func<VehicleMakeEntity, int>> orderLambda) { var VehicleMakeEntity = _source.Skip(index * count).Take(count).OrderBy(orderLambda).ToList(); return VehicleMakeEntity; }
    – A.M. Patel
    Nov 20 at 5:33












  • Check VehicleMakeEntity varible any list return or not.
    – A.M. Patel
    Nov 20 at 5:36
















0














Can you check with below code.



public IActionResult Make()
{
var data = _vehicleService.GetMake(1, 10, (p => p.Id)).ToList();

return View(data);
}


Also try to remove AsQueryable()



public IEnumerable<VehicleMakeEntity> GetMake(int index, int count, Expression<Func<VehicleMakeEntity, int>> orderLambda)
{
return _makeRepository.SelectListMake(index, count, orderLambda);
}





share|improve this answer





















  • I just did, it returns data Count = 0 now. It cannot be 0 as I foreached all the entities and they always return with the database value.
    – TimmyNeutron
    Nov 20 at 5:19










  • Ok, First check in repository with list. Getting any data from database. public List<VehicleMakeEntity> SelectListMake(int index, int count, Expression<Func<VehicleMakeEntity, int>> orderLambda) { var VehicleMakeEntity = _source.Skip(index * count).Take(count).OrderBy(orderLambda).ToList(); return VehicleMakeEntity; }
    – A.M. Patel
    Nov 20 at 5:33












  • Check VehicleMakeEntity varible any list return or not.
    – A.M. Patel
    Nov 20 at 5:36














0












0








0






Can you check with below code.



public IActionResult Make()
{
var data = _vehicleService.GetMake(1, 10, (p => p.Id)).ToList();

return View(data);
}


Also try to remove AsQueryable()



public IEnumerable<VehicleMakeEntity> GetMake(int index, int count, Expression<Func<VehicleMakeEntity, int>> orderLambda)
{
return _makeRepository.SelectListMake(index, count, orderLambda);
}





share|improve this answer












Can you check with below code.



public IActionResult Make()
{
var data = _vehicleService.GetMake(1, 10, (p => p.Id)).ToList();

return View(data);
}


Also try to remove AsQueryable()



public IEnumerable<VehicleMakeEntity> GetMake(int index, int count, Expression<Func<VehicleMakeEntity, int>> orderLambda)
{
return _makeRepository.SelectListMake(index, count, orderLambda);
}






share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 20 at 5:13









A.M. Patel

628




628












  • I just did, it returns data Count = 0 now. It cannot be 0 as I foreached all the entities and they always return with the database value.
    – TimmyNeutron
    Nov 20 at 5:19










  • Ok, First check in repository with list. Getting any data from database. public List<VehicleMakeEntity> SelectListMake(int index, int count, Expression<Func<VehicleMakeEntity, int>> orderLambda) { var VehicleMakeEntity = _source.Skip(index * count).Take(count).OrderBy(orderLambda).ToList(); return VehicleMakeEntity; }
    – A.M. Patel
    Nov 20 at 5:33












  • Check VehicleMakeEntity varible any list return or not.
    – A.M. Patel
    Nov 20 at 5:36


















  • I just did, it returns data Count = 0 now. It cannot be 0 as I foreached all the entities and they always return with the database value.
    – TimmyNeutron
    Nov 20 at 5:19










  • Ok, First check in repository with list. Getting any data from database. public List<VehicleMakeEntity> SelectListMake(int index, int count, Expression<Func<VehicleMakeEntity, int>> orderLambda) { var VehicleMakeEntity = _source.Skip(index * count).Take(count).OrderBy(orderLambda).ToList(); return VehicleMakeEntity; }
    – A.M. Patel
    Nov 20 at 5:33












  • Check VehicleMakeEntity varible any list return or not.
    – A.M. Patel
    Nov 20 at 5:36
















I just did, it returns data Count = 0 now. It cannot be 0 as I foreached all the entities and they always return with the database value.
– TimmyNeutron
Nov 20 at 5:19




I just did, it returns data Count = 0 now. It cannot be 0 as I foreached all the entities and they always return with the database value.
– TimmyNeutron
Nov 20 at 5:19












Ok, First check in repository with list. Getting any data from database. public List<VehicleMakeEntity> SelectListMake(int index, int count, Expression<Func<VehicleMakeEntity, int>> orderLambda) { var VehicleMakeEntity = _source.Skip(index * count).Take(count).OrderBy(orderLambda).ToList(); return VehicleMakeEntity; }
– A.M. Patel
Nov 20 at 5:33






Ok, First check in repository with list. Getting any data from database. public List<VehicleMakeEntity> SelectListMake(int index, int count, Expression<Func<VehicleMakeEntity, int>> orderLambda) { var VehicleMakeEntity = _source.Skip(index * count).Take(count).OrderBy(orderLambda).ToList(); return VehicleMakeEntity; }
– A.M. Patel
Nov 20 at 5:33














Check VehicleMakeEntity varible any list return or not.
– A.M. Patel
Nov 20 at 5:36




Check VehicleMakeEntity varible any list return or not.
– A.M. Patel
Nov 20 at 5:36


















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