asp.net core pass linq lambda to view - entity-framework

Question

I'm using asp.net core, when I pass linq lambda query to view I get this error:
An unhandled exception occurred while processing the request.
InvalidOperationException: The model item passed into
the ViewDataDictionary is of type 'System.Collections.Generic.List`1[<>f__AnonymousType7`1[System.Int64]]',
but this ViewDataDictionary instance
requires a model item of type 'System.Collections.Generic.IEnumerable`1[HRMS.Salaries]'.
This my query:
public async Task<IActionResult> Index()
{
var salary = (from salaries in _context.Salaries select new { salaries.Id });
return View(await salary.ToListAsync());
}
and in the view I use:
#model IEnumerable<HRMS.Salaries>
#foreach (var item in Model)
{
<tr>
<td>#item.Id</td>
</tr>
}

Answer 1

Is there a reason you create an object in your query? If no, try this instead :
public async Task<IActionResult> Index()
{
var salary = (from salaries in _context.Salaries
select salaries.Id
);
return View(await salary.ToListAsync());
}
Then in your view :
#model IEnumerable<int>
#foreach (var item in Model)
{
<tr>
<td>#item</td>
</tr>
}
Else, if you need the object, use in your query :
public async Task<IActionResult> Index()
{
var salary = (from salaries in _context.Salaries
select salaries
);
return View(await salary.ToListAsync());
}
And keep your view the same :
#model IEnumerable<HRMS.Salaries>
#foreach (var item in Model)
{
<tr>
<td>#item.Id</td>
</tr>
}
EDIT : If you want to pass multiple fields to your View, it's better to use a new object. For this, create a class (for exemple, SalaryDetailsViewModel) with the required fields. Then in your controller :
public async Task<IActionResult> Index()
{
var salary = (from salaries in _context.Salaries
select new SalaryDetailsViewModel {
Id = salaries.Id,
Amount = salaries.Amount,
Date = salaries.Date,
JobTitle = salaries.JobTitle.Name }
);
return View(await salary.ToListAsync());
}
Then adjust your View to call the different fields of your custom object, for display purpose, for example :
#model IEnumerable<SalaryDetailsViewModel>
#foreach (var item in Model)
{
<tr>
<td>#item.Id</td>
<td>#item.Amount</td>
<td>#item.Date</td>
<td>#item.JobTitle</td>
</tr>
}