Modified the readme file

README.md

@@ -1,2 +1,77 @@
 # how-to-sort-the-items-based-on-date-time-along-with-groups-in-.net-maui-listview
+
 This example demonstrates how to sort the items based on date time along with the groups in .NET MAUI ListView
+
+## XAML 
+
+<listView:SfListView x:Name="listView" ItemsSource="{Binding Items}" IsStickyGroupHeader="False" ItemSize="50">
+    <listView:SfListView.ItemTemplate>
+        <DataTemplate>
+            <StackLayout>
+                <Grid Padding="10,0,0,0">
+                    <Grid.RowDefinitions>
+                        <RowDefinition Height="*" />
+                        <RowDefinition Height="*" />
+                    </Grid.RowDefinitions>
+                    <Label LineBreakMode="NoWrap" 
+            VerticalTextAlignment="End"
+            Text="{Binding ContactName}"/>
+                    <Label Grid.Row="1"
+            VerticalTextAlignment="Start"
+            Text="{Binding DateOfBirth, StringFormat='{0:dd/MM/yyyy}', Mode=TwoWay}"/>
+                </Grid>
+                <Grid>
+                    <Grid.RowDefinitions>
+                        <RowDefinition Height="1" />
+                    </Grid.RowDefinitions>
+                    <StackLayout BackgroundColor="Gray"/>
+                </Grid>
+            </StackLayout>
+        </DataTemplate>
+    </listView:SfListView.ItemTemplate>
+    <listView:SfListView.GroupHeaderTemplate>
+        <DataTemplate>
+            <Label Text= "{Binding Key}" BackgroundColor="Teal" FontSize="22" FontAttributes="Bold" TextColor="White"/>
+        </DataTemplate>
+    </listView:SfListView.GroupHeaderTemplate>
+</listView:SfListView>
+
+## C# 
+    class CustomGroupComparer : IComparer<GroupResult>, ISortDirection
+    {
+        public CustomGroupComparer()
+        {
+            this.SortDirection = ListSortDirection.Ascending;
+        }
+
+        public ListSortDirection SortDirection
+        {
+            get;
+            set;
+        }
+
+        public int Compare(GroupResult x, GroupResult y)
+        {
+            DateTime xvalue = Convert.ToDateTime(x.Key);
+            DateTime yvalue = Convert.ToDateTime(y.Key);
+
+            // Group results are compared and return the SortDirection
+            if (xvalue.CompareTo(yvalue) > 0)
+                return SortDirection == ListSortDirection.Ascending ? 1 : -1;
+            else if (xvalue.CompareTo(yvalue) == -1)
+                return SortDirection == ListSortDirection.Ascending ? -1 : 1;
+            else
+                return 0;
+        }
+    }
+
+## Requirements to run the demo
+
+* [Visual Studio 2017](https://visualstudio.microsoft.com/downloads/) or [Visual Studio for Mac](https://visualstudio.microsoft.com/vs/mac/)
+* Xamarin add-ons for Visual Studio (available via the Visual Studio installer).
+
+## Troubleshooting
+
+### Path too long exception
+
+If you are facing path too long exception when building this example project, close Visual Studio and rename the repository to short and build the project.