FlexGrid

FlexGrid

Custom Footers

This sample shows how to extend FlexGrid to provide two types of footer elements.

Features

Sample SourceDocumentation

Select how to group the data

See and edit the data here

Start

End

Country

Product

Color

Amount2

Discount

Active

Description

This sample shows how to extend FlexGrid to provide two types of footer elements.

Column Footer Rows: In some situations you may want to display non-scrollable rows below the grid data containing summary information such as subtotals. This can be done by the ShowColumnFooters(bool value = true, string rowHeaderText = null) method. The grid will automatically provide values for any columns that have the Aggregate property set. This is what this sample does.
Group Footer Rows: When grouping is enabled, FlexGrid adds group rows above each group. This sample shows how you can add custom group rows below each group as well.

CustomFootersController.cs CustomFooters.cshtml

using C1.Web.Mvc; 
using C1.Web.Mvc.Serialization; 
using Microsoft.AspNetCore.Mvc; 
using MvcExplorer.Models; 
  
namespace MvcExplorer.Controllers 
{ 
    public partial class FlexGridController : Controller 
    { 
        public ActionResult CustomFooters() 
        { 
            return View(); 
        } 
  
        public ActionResult CustomFooters_Bind([C1JsonRequest] CollectionViewRequest<Sale> requestData) 
        { 
            return this.C1Json(CollectionViewHelper.Read(requestData, Sale.GetData(500))); 
        } 
    } 
} 

@model IEnumerable<Sale> 
  
@section Scripts{ 
    <script>
        // class used to identify group footer rows 
        var ROW_FOOTER_CLASS = 'wj-groupfooter'; 
  
        function grouping(groupBy) { 
            var flex = wijmo.Control.getControl('#grid'), data = flex.collectionView; 
            flex.beginUpdate(); 
            data.groupDescriptions.clear(); 
            var groups = groupBy ? groupBy.split(',') : []; 
            for (var i = 0; i < groups.length; i++) { 
                data.groupDescriptions.push(new wijmo.collections.PropertyGroupDescription(groups[i])); 
            } 
            flex.endUpdate(); 
        } 
  
        function onLoadedRows() { 
            var flex = wijmo.Control.getControl('#grid'); 
            if (flex.collectionView.groupDescriptions.length) { 
                addGroupFooters(); 
            } 
        } 
  
        // add group footers 
        function addGroupFooters() { 
            var flex = wijmo.Control.getControl('#grid'); 
            flex.beginUpdate(); 
            for (var r = 0; r < flex.rows.length; r++) { 
                var row = flex.rows[r]; 
                if (row instanceof wijmo.grid.GroupRow && row.cssClass != ROW_FOOTER_CLASS) { 
  
                    // create footer row to match this group row 
                    var newRow = new wijmo.grid.GroupRow(); 
                    newRow.level = row.level; 
                    newRow.cssClass = ROW_FOOTER_CLASS; 
  
                    // add footer row to the grid 
                    var index = findFooterIndex(r); 
                    flex.rows.insert(index, newRow); 
  
                    // add some content to footer row 
                    var group = row.dataItem; 
                    flex.setCellData(index, 0, 'f(' + group.name + ')', false); 
                } 
            } 
            flex.endUpdate(); 
        } 
  
        // find the index where the group footer should be inserted 
        function findFooterIndex(r) { 
            var flex = wijmo.Control.getControl('#grid'); 
            var level = flex.rows[r].level; 
            for (var i = r + 1; i < flex.rows.length; i++) { 
                var row = flex.rows[i]; 
                if (row instanceof wijmo.grid.GroupRow) { 
  
                    // if this is *not* a footer and the level is <=, insert here 
                    if (row.cssClass != ROW_FOOTER_CLASS && row.level <= level) { 
                        return i; 
                    } 
  
                    // if this *is* a footer and the level is <, insert here 
                    if (row.cssClass == ROW_FOOTER_CLASS && row.level < level) { 
                        return i; 
                    } 
                } 
            } 
  
            // insert at the bottom 
            return flex.rows.length; 
        } 
    </script>
} 
  
<style> 
    .wj-control .wj-btn-group { 
        border: 1px solid rgba(0, 0, 0, 0.2); 
    } 
    .wj-control .wj-btn-group * { 
        color: black !important; 
    } 
    .wj-control .wj-btn-group > *:not(:first-child) { 
        border-left: 1px solid rgba(0, 0, 0, 0.2); 
    } 
    .wj-control .wj-btn-group > .wj-btn.wj-btn-default:hover, 
    .wj-control .wj-btn-group > .wj-btn.wj-btn-default:focus { 
        background: #eee !important; 
    } 
</style> 
  
<label>@Html.Raw(FlexGridRes.CustomFooters_Text1)</label> 
<div class="wj-btn-group"> 
    <button type="button" class="wj-btn wj-btn-default" onclick="grouping('')">@Html.Raw(FlexGridRes.CustomFooters_None)</button> 
    <button type="button" class="wj-btn wj-btn-default" onclick="grouping('Country')">@Html.Raw(FlexGridRes.CustomFooters_Country)</button> 
    <button type="button" class="wj-btn wj-btn-default" onclick="grouping('Product')">@Html.Raw(FlexGridRes.CustomFooters_Product)</button> 
    <button type="button" class="wj-btn wj-btn-default" onclick="grouping('Product,Color')">@Html.Raw(FlexGridRes.CustomFooters_ProductAndColor)</button> 
</div> 
  
<label>@Html.Raw(FlexGridRes.CustomFooters_Text2)</label> 
<div class="multi-grid"> 
    <c1-flex-grid id="grid" is-read-only="true" auto-generate-columns="false"
                  show-groups="true" class="grid" loaded-rows="onLoadedRows"
                  show-column-footers="true"> 
        <c1-items-source disable-server-read="true" read-action-url="@Url.Action("CustomFooters_Bind")"></c1-items-source> 
        <c1-flex-grid-column binding="ID" width="70"></c1-flex-grid-column> 
        <c1-flex-grid-column binding="Start"></c1-flex-grid-column> 
        <c1-flex-grid-column binding="End"></c1-flex-grid-column> 
        <c1-flex-grid-column binding="Country"></c1-flex-grid-column> 
        <c1-flex-grid-column binding="Product"></c1-flex-grid-column> 
        <c1-flex-grid-column binding="Color"></c1-flex-grid-column> 
        <c1-flex-grid-column binding="Amount2" format="c" aggregate="Sum"></c1-flex-grid-column> 
        <c1-flex-grid-column binding="Discount" width="100" format="p0" aggregate="Avg"></c1-flex-grid-column> 
        <c1-flex-grid-column binding="Active" width="80"></c1-flex-grid-column> 
    </c1-flex-grid> 
</div> 
  
@section Summary{ 
    @Html.Raw(FlexGridRes.CustomFooters_Text0) 
} 
  
@section Description{ 
    <p>@Html.Raw(FlexGridRes.CustomFooters_Text0)</p> 
    <ol> 
        <li>@Html.Raw(FlexGridRes.CustomFooters_Li1)</li> 
        <li>@Html.Raw(FlexGridRes.CustomFooters_Li2)</li> 
    </ol> 
} 

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