partial view in mvc core - asp.net-mvc

Question

I would like to sum table column for view model is
public class ColumnTotal {
public int ID { get; set; }
public decimal ColumnOne { get; set; }
public decimal ColumnTwo { get; set; }
public decimal ColumnThree { get; set; }
}
My home controller of columntotal method looks like this
public IActionResult ColumnTotal()
{
var query = _context.REHPData.Include(r => r.BudgetYear).GroupBy(r => r.BudgetYearlyAllocation.ID).Select(s => new ColumnTotal
{
ID = s.Key,
ColumnOne = s.Sum(x => x.BudgetYearlyAllocation.AdminThaTeen),
ColumnTwo = s.Sum(x => x.BudgetYearlyAllocation.AdminThaTwo),
ColumnThree = s.Sum(x => x.BudgetYearlyAllocation.AdminThaFour)
}).ToList();
return View(query);
}
MY partial view _test.cshtml looks like this
#model RenewableEnergyProjcet.Models.CalculationViewModels.ColumnTotal
<tr>
<td> #Html.DisplayFor(m=>m.ColumnOne)</td>
<td> #Html.DisplayFor(m=>m.ColumnTwo)</td>
<td> #Html.DisplayFor(m=>m.ColumnThree)</td>
</tr>
my report.chtml looks like this
#{
ViewData["Title"] = "Budget Result Table ";
}
<h2>Budgets Result Table </h2>
<table class="table table-bordered table-condensed table-responsive table-hover">
<tr>
<td>Some Columns -----</td>
</tr>
#foreach (var item in Model)
{
<tr>
some data----
</tr>
}
<tr>
#await Html.PartialAsync("_test"); //how to call this partial _test.chtml
</tr>
</table>
please how to call partial _test.chtml from in method.

Answer 1

In Action that fill report.chtml call too the query that you use in ColumnTotal() action and send it to the view and in the view use RenderPartial() to call the view.
public IActionResult report()
{
ViewData["ColumnTotal"] = _context.REHPData.Include(r => r.BudgetYear).GroupBy(r => r.BudgetYearlyAllocation.ID).Select(s => new ColumnTotal
{
ID = s.Key,
ColumnOne = s.Sum(x => x.BudgetYearlyAllocation.AdminThaTeen),
ColumnTwo = s.Sum(x => x.BudgetYearlyAllocation.AdminThaTwo),
ColumnThree = s.Sum(x => x.BudgetYearlyAllocation.AdminThaFour)
}).ToList();
return View("report");
}
An in the view do something like this.
#Html.RenderPartial("_test",ViewData["ColumnTotal"])