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Created: |
Updated: |
Platform: |
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| 143663 | Mar 30,2019 03:22 PM UTC | Apr 24,2019 10:59 AM UTC | ASP.NET Core - EJ 2 | 12 |
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Tags: DataGrid |
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<e-aggregate-column field="ShipCountry" type="Custom" footerTemplate="Brazil Count:${Custom}" customAggregate="@("customAggregateFn")"></e-aggregate-column>
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<e-aggregate-column field="ShipCountry" type="Count" footerTemplate="Count:${Count}"></e-aggregate-column>
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public IActionResult UrlDatasource([FromBody]DataManagerRequest dm)
{
IEnumerable DataSource = order;
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);
}
List<string> str = new List<string>();
if (dm.Aggregates != null)
{
for (var i = 0; i < dm.Aggregates.Count; i++)
str.Add(dm.Aggregates[i].Field);
}
IEnumerable aggregate = operation.PerformSelect(DataSource, str);
int count = DataSource.Cast<Orders>().Count();
if (dm.Skip != 0)
{
DataSource = operation.PerformSkip(DataSource, dm.Skip); //Paging
}
if (dm.Take != 0)
{
DataSource = operation.PerformTake(DataSource, dm.Take);
}
return dm.RequiresCounts ? Json(new { result = DataSource, count = count, aggregate = aggregate }) : Json(DataSource);
} |
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List<string> str = new List<string>();
//As aggregate is to be displayed for “CustomerID” column, we have fetched distinct from “CustomerID” field
IEnumerable aggdata = OrdersDetails.GetAllRecords().GroupBy(o => o.CustomerID).Select(o => o.FirstOrDefault());
if (dm.Aggregates != null)
{
...
}
IEnumerable aggregate = operation.PerformSelect(aggdata, str); //Provide the distinct data(aggdata) as argument instead of “DataSource”
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[index.cshtml]
<div>
<ejs-grid id="Grid" allowPaging="true" allowExcelExport="true" toolbar="@(new List<string>() { "Add", "Edit", "Delete", "Cancel", "Update","ExcelExport" })" toolbarClick="toolbarClick" actionBegin="actionBegin" load="load">
<e-data-manager url="/Home/UrlDatasource/" adaptor="UrlAdaptor" crossdomain="true"></e-data-manager>
<e-grid-editsettings allowEditing="true" allowDeleting="true" allowAdding="true" mode="Normal"></e-grid-editsettings>
<e-grid-aggregates>
<e-grid-aggregate>
<e-aggregate-columns>
<e-aggregate-column field="CustomerID" type="Count" footerTemplate="Cust Count: ${Count}"></e-aggregate-column> //String type column
<e-aggregate-column field="ShipCity" type="Count" footerTemplate="Count: ${Count}"></e-aggregate-column> // String type column
<e-aggregate-column field="Freight" type="Sum" footerTemplate="Avg: ${Sum}" format="C"></e-aggregate-column> // Number type column
</e-aggregate-columns>
</e-grid-aggregate>
</e-grid-aggregates>
<e-grid-columns>
<e-grid-column field="OrderID" headerText="Order ID" isPrimaryKey="true" validationRules="@(new { required=true})" textAlign="Right" width="120"></e-grid-column>
. . . .
</e-grid-columns>
</ejs-grid>
</div>
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<div>
<ejs-grid id="Grid" allowPaging="true" created="created" toolbar="@(new List<string>() { "Add", "Edit", "Delete", "Cancel", "Update" })" actionBegin="actionBegin" load="load">
<e-grid-editsettings allowEditing="true" allowDeleting="true" allowAdding="true" mode="Normal"></e-grid-editsettings>
<e-grid-aggregates>
<e-grid-aggregate>
<e-aggregate-columns>
<e-aggregate-column field="OrderID" type="Count" footerTemplate="Sum: ${Count}"></e-aggregate-column>
<e-aggregate-column field="CustomerID" type="Custom" footerTemplate="Sum: ${Custom}" customAggregate="@("customAggregateFn")"></e-aggregate-column>
</e-aggregate-columns>
</e-grid-aggregate>
</e-grid-aggregates>
<e-grid-columns>
<e-grid-column field="OrderID" headerText="Order ID" isPrimaryKey="true" validationRules="@(new { required=true})" textAlign="Right" width="120"></e-grid-column>
<e-grid-column field="CustomerID" headerText="Customer Name" validationRules="@(new { required=true})" width="150"></e-grid-column>
. . . . .
</ejs-grid>
</div>
<script>
var aggregateData;
function created(args) {
//extending the default UrlAdaptor
class CustomAdaptor extends ej.data.UrlAdaptor {
processResponse(data, ds, query, xhr, request, changes) {
aggregateData = ej.data.DataUtil.distinct(data.aggregate, 'CustomerID', true);
return super.processResponse(data, ds, query, xhr, request, changes);
}
}
var grid = document.querySelector('#Grid').ej2_instances[0];
grid.dataSource = new ej.data.DataManager({
adaptor: new CustomAdaptor()
});
}
function customAggregateFn(data) {
return aggregateData.length;
}
</script>
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