Row spanning in ASP.NET Core Grid component

21 Oct 202419 minutes to read

The grid provides an option to span row cells, allowing you to merge two or more cells in a row into a single cell. This feature can be useful in scenarios where you want to display information that spans across multiple rows, but want to avoid repeating the same information in each row.

To achieve this, You need to define the rowSpan attribute to span cells in the queryCellInfo event. The rowSpan attribute is used to specify the number of rows that the current cell should span.

The queryCellInfo event is triggered for each cell in the grid, and allows you to customize the cells in the grid. By handling this event, you can set the rowSpan attribute for a cell to achieve row spanning.

In the following code example, Davolio cell is spanned to two rows in the EmployeeName column. Also Grid supports the spanning of rows and columns for same cells. Lunch Break cell is spanned to two rows and three columns in the 1:00 column.

CSHTML
Span.cs
<ejs-grid id="Grid" dataSource="@ViewBag.DataSource" queryCellInfo="queryCellEvent" gridLines="Both" allowTextWrap="true" width= 'auto',>
    <e-grid-columns>
        <e-grid-column field="EmployeeID" headerText="Employee ID" isPrimaryKey="true"  textAlign="Right" width="150"></e-grid-column>
        <e-grid-column field="EmployeeName" headerText="Employee Name" width="200"></e-grid-column>
        <e-grid-column field="9:00" headerText="9:00 AM" width="120"></e-grid-column>
        <e-grid-column field="9:30" headerText="9:30 AM" width="120"></e-grid-column>
        <e-grid-column field="10:00" headerText="10:00 AM" width="120"></e-grid-column>
        <e-grid-column field="10:30" headerText="10:30 AM" width="120"></e-grid-column>
        <e-grid-column field="11:00" headerText="11:00 AM" width="120"></e-grid-column>
        <e-grid-column field="11:30" headerText="11:30 AM" width="120"></e-grid-column>
        <e-grid-column field="12:00" headerText="12:00 AM" width="120"></e-grid-column>
        <e-grid-column field="12:30" headerText="12:30 AM" width="120"></e-grid-column>
        <e-grid-column field="1:00" headerText="1:00 PM" width="120"></e-grid-column>
        <e-grid-column field="1:30" headerText="1:30 PM" width="120"></e-grid-column>
        <e-grid-column field="2:00" headerText="2:00 PM" width="120"></e-grid-column>
        <e-grid-column field="2:30" headerText="2:30 PM" width="120"></e-grid-column>
        <e-grid-column field="3:00" headerText="3:00 PM" width="120"></e-grid-column>
        <e-grid-column field="3:30" headerText="3:30 PM" width="120"></e-grid-column>
        <e-grid-column field="4:00" headerText="4:00 PM" width="120"></e-grid-column>
        <e-grid-column field="4:30" headerText="4:30 PM" width="120"></e-grid-column>
        <e-grid-column field="5:00" headerText="5:00 PM" width="120"></e-grid-column>
    </e-grid-columns>          
</ejs-grid>
<script>
 function queryCellEvent(args)
        {
            var data = args.data;
            switch (data.EmployeeID) {
                case 10001:
                    if (args.column.field === '9:00' || args.column.field === '2:30' || args.column.field === '4:30') {
                        args.colSpan = 2;
                    } else if (args.column.field === '11:00') {
                        args.colSpan = 3;
                    } else if (args.column.field === 'EmployeeName') {
                        args.rowSpan = 2;
                    } else if (args.column.field === '1:00') {
                        args.colSpan = 3;
                        args.rowSpan = 2;
                    }
                    break;
                case 10002:
                    if (args.column.field === '9:30' || args.column.field === '2:30' ||
                        args.column.field === '4:30') {
                        args.colSpan = 3;
                    } else if (args.column.field === '11:00') {
                        args.colSpan = 4;
                    }
                    break;
                case 10003:
                    if (args.column.field === '9:00' || args.column.field === '11:30') {
                        args.colSpan = 3;
                    } else if (args.column.field === '10:30' || args.column.field === '3:30' ||
                        args.column.field === '4:30' || args.column.field === '2:30') {
                        args.colSpan = 2;
                    }
                    break;
                case 10004:
                    if (args.column.field === '9:00') {
                        args.colSpan = 3;
                    } else if (args.column.field === '11:00') {
                        args.colSpan = 4;
                    } else if (args.column.field === '4:00' || args.column.field === '2:30') {
                        args.colSpan = 2;
                    }
                    break;
                case 10005:
                    if (args.column.field === '9:00') {
                        args.colSpan = 4;
                    } else if (args.column.field === '11:30') {
                        args.colSpan = 3;
                    } else if (args.column.field === '3:30' || args.column.field === '4:30' || args.column.field === '2:30') {
                        args.colSpan = 2;
                    }
                    break;
                case 10006:
                    if (args.column.field === '9:00' || args.column.field === '4:30' ||
                        args.column.field === '2:30' || args.column.field === '3:30') {
                        args.colSpan = 2;
                    } else if (args.column.field === '10:00' || args.column.field === '11:30') {
                        args.colSpan = 3;
                    }
                    break;
                case 10007:
                    if (args.column.field === '9:00' || args.column.field === '3:00' || args.column.field === '10:30') {
                        args.colSpan = 2;
                    } else if (args.column.field === '11:30' || args.column.field === '4:00') {
                        args.colSpan = 3;
                    }
                    break;
                case 10008:
                    if (args.column.field === '9:00' || args.column.field === '10:30' || args.column.field === '2:30') {
                        args.colSpan = 3;
                    } else if (args.column.field === '4:00') {
                        args.colSpan = 2;
                    }
                    break;
                case 10009:
                    if (args.column.field === '9:00' || args.column.field === '11:30') {
                        args.colSpan = 3;
                    } else if (args.column.field === '4:30' || args.column.field === '2:30') {
                        args.colSpan = 2;
                    }
                    break;
                case 100010:
                    if (args.column.field === '9:00' || args.column.field === '2:30' ||
                        args.column.field === '4:00' || args.column.field === '11:30') {
                        args.colSpan = 3;
                    } else if (args.column.field === '10:30') {
                        args.colSpan = 2;
                    }
                    break;
                }
         }
</script>
public IActionResult Index()
{
    ViewBag.DataSource = ColumnSpanData.GetAllRecords()
    return View();
}

Row span

To disable the spanning for particular grid page, you need to use requestType from queryCellInfo event argument.

The rowSpan and colSpan attributes can be used together to merge cells both vertically and horizontally.

Limitations

The updateCell method does not support row spanning.
Row spanning is not compatible with the following features:
1. Virtual scrolling
2. Infinite scrolling
3. Grouping
4. Row drag and drop
5. Autofill
6. Inline editing
7. Batch editing
8. CRUD