[DRAFT] DateTimeOffset / Playground

net/Sample/Controllers/NorthwindController.cs

@@ -26,6 +26,7 @@ public async Task<IActionResult> Orders(DataSourceLoadOptions loadOptions) {
                 //----------------------------------------
                 o.OrderDateOnly,
                 o.OrderTimeOnly,
+                o.OrderDateTimeOffset,
                 //----------------------------------------
                 o.Freight,
                 o.ShipCountry,

net/Sample/Models/Order.cs

@@ -33,6 +33,8 @@ public Order() {
 
         public TimeOnly? OrderTimeOnly { get; set; }
 
+        public DateTimeOffset? OrderDateTimeOffset { get; set; }
+
         //----------------------------------------
 
         [Column(TypeName = "datetime")]

net/Sample/SQL.txt

@@ -9,10 +9,23 @@ ALTER TABLE [Orders]
 ADD [OrderTimeOnly] time NULL
 GO
 UPDATE [Orders] SET [OrderTimeOnly] = CONVERT(time, DATEADD(hour, ([OrderID] + 1), [OrderDate]))
+GO
+ALTER TABLE [Orders]
+ADD [OrderDateTimeOffset] datetimeoffset NULL
+GO
+-- (-14:00..+14:00)
+-- IF EXISTS (
+--     SELECT 1
+--     FROM [Orders]
+--     WHERE ([OrderID] - 10247) NOT BETWEEN -840 AND 840
+-- )
+--     THROW 50000, 'OrderDateTimeOffset offset minutes must be between -840 and 840.', 1
+-- GO
+UPDATE [Orders] SET [OrderDateTimeOffset] = TODATETIMEOFFSET([OrderDate], ([OrderID] - 10247))
 
 ---
 
-dotnet add package Microsoft.EntityFrameworkCore.Tools
-dotnet add package Microsoft.EntityFrameworkCore.SqlServer
+dotnet package add Microsoft.EntityFrameworkCore.Tools --project Sample
+dotnet package add Microsoft.EntityFrameworkCore.SqlServer --project Sample
 
 Scaffold-DbContext "Data Source=(localdb)\MSSQLLocalDB; Database=Northwind; Integrated Security=True; MultipleActiveResultSets=True; App=EntityFramework" Microsoft.EntityFrameworkCore.SqlServer -OutputDir Models

net/Sample/Views/Home/Index.cshtml

@@ -53,6 +53,14 @@
                         //groupInterval: "quarter" // N|A
                     }
                 },
+                {
+                    dataField: "orderDateTimeOffset",
+                    dataType: "date",
+                    headerFilter: {
+                        groupInterval: "quarter"
+                    }
+                },
+
                 {
                     dataField: "freight",
                     headerFilter: {