This line is returning a null reference...
DataSource = operation.PerformSorting(DataSource, dm.Sorted);
Grid Code
<ejs-grid id="Grid" allowPaging="true" allowSorting="true" allowFiltering="true">
<e-data-manager url="/Organizations/LoadData" updateUrl="/Organizations/UpdateData" adaptor="UrlAdaptor"></e-data-manager>
<e-grid-columns>
<e-grid-column field="Name" headerText="Name" allowSorting="true"></e-grid-column>
<e-grid-column field="User.FullName" headerText="User" type="string"></e-grid-column>
<e-grid-column field="Address.Address1" headerText="Address" type="string"></e-grid-column>
<e-grid-column field="OfficePhone" headerText="Phone"></e-grid-column>
<e-grid-column field="OrganizationType.Name" headerText="OrganizationType" type="string"></e-grid-column>
<e-grid-column field="OrgID" template="#edittemplate"></e-grid-column>
</e-grid-columns>
</ejs-grid>
<script id="edittemplate" type="text/x-template">
<div>
<a rel='nofollow' rel='nofollow' href="/Organizations/Edit/${OrgID}">Edit</a> |
<a rel='nofollow' rel='nofollow' href="/Organizations/Details/${OrgID}">Details</a> |
<a rel='nofollow' rel='nofollow' href="/Organizations/Delete/${OrgID}">Delete</a>
</div>
</script>
Controller Code
public IActionResult LoadData([FromBody]DataManagerRequest dm)
{
var sa = new JsonSerializerSettings();
IEnumerable<Organization> DataSource = _context.Organization
.Include(o => o.Address)
.Include(o => o.OrganizationType)
.Include(o => o.User)
.ToList();
DataOperations operation = new DataOperations();
if (dm.Search != null && dm.Search.Count > 0)
{
DataSource = operation.PerformSearching(DataSource, dm.Search); //Search
}
if (dm.Sorted != null && dm.Sorted.Count > 0) //Sorting
{
DataSource = operation.PerformSorting(DataSource, dm.Sorted);
}
if (dm.Where != null && dm.Where.Count > 0) //Filtering
{
DataSource = operation.PerformFiltering(DataSource, dm.Where, dm.Where[0].Operator);
}
int count = DataSource.Cast<Organization>().Count();
if (dm.Skip != 0)
{
DataSource = operation.PerformSkip(DataSource, dm.Skip); //Paging
}
if (dm.Take != 0)
{
DataSource = operation.PerformTake(DataSource, dm.Take);
}
return Json(new { result = DataSource, count = _context.Organization.Count() });
}
