How to group a column with DateTime values in .NET MAUI DataGrid(SfDataGrid)?

SfDataGrid control allows you to group a column with DateTime data, however it will display the entire DateTime value including the time part in its cells, like in the following screenshot.

If you do not want to display the time part of the DateTime object then apply Format to the corresponding column. Refer the below code example.

 <syncfusion:DataGridTextColumn MappingName="ShippingDate"
                               Format="dd/MM/yyyy"
                               HeaderText="Shipping Date" />

In the following screenshot note the DateTime data in the ShippingDate column.

If your requirement is to group by a date column and also to display only the date part in the caption, then you can achieve it by writing a converter to apply the custom grouping logic. Refer the below code example.

<syncfusion:SfDataGrid.GroupColumnDescriptions>
   <syncfusion:GroupColumnDescription ColumnName="ShippingDate"
                                      Comparer="{StaticResource groupDateTimeConverter}"/>
</syncfusion:SfDataGrid.GroupColumnDescriptions>

Since we have returned a string value in the converter, the groups are sorted considering the GroupKey values as string. If you want to sort the groups considering it to be DateTime value then you need to write a SortComparer for it.

Refer the following code example to create a custom SortComparer

public class CustomSortComparer : IComparer<object>, ISortDirection
{
   #region Property

   public ListSortDirection SortDirection { get; set; }

   #endregion

   #region Constructor

   public CustomSortComparer()
   {

   }

   #endregion

   #region Compare

   public int Compare(object? x, object? y)
   {

       DateTime dateX = DateTime.MaxValue;

       DateTime dateY = DateTime.MaxValue;

       if (x.GetType() == typeof(OrderInfo))
       {
           dateX = (DateTime)((OrderInfo)x).ShippingDate;

           dateY = (DateTime)((OrderInfo)y).ShippingDate;
       }

       else if (x.GetType() == typeof(Group))
       {
           dateX = (DateTime)((Group)x).Key;

           dateY = (DateTime)((Group)y).Key;
       }

       else
       {
           dateX = (DateTime)x;

           dateY = (DateTime)y;
       }

       if (DateTime.Compare(dateX, dateY) >= 0)

           return SortDirection == ListSortDirection.Ascending ? 1 : -1;

       else

           return SortDirection == ListSortDirection.Ascending ? -1 : 1;
   }

   #endregion
}

The following screenshot shows the final outcome without time and proper sort order

View sample in GitHub

Take a moment to explore this documentation, where you can find more information about Syncfusion .NET MAUI DataGrid (SfDataGrid) with code examples. Please refer to this link to learn about the essential features of Syncfusion .NET MAUI DataGrid (SfDataGrid).

Conclusion

I hope you enjoyed learning about how to group a column with DateTime values in .NET MAUI DataGrid (SfDataGrid).

You can refer to our .NET MAUI DataGrid’s feature tour page to learn about its other groundbreaking feature representations. You can also explore our .NET MAUI DataGrid Documentation to understand how to present and manipulate data.
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