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Updated the README.md file #1

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66 changes: 66 additions & 0 deletions README.md
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**[View document in Syncfusion Xamarin Knowledge base](https://www.syncfusion.com/kb/12330/how-to-refresh-listview-after-dropping-a-table-in-xamarin-forms-sflistview)**

## Sample

```xaml
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Button Text="Load Data" Command="{Binding LoadDataCommand}" BackgroundColor="#ddf3f5"/>
<syncfusion:SfListView x:Name="listView" ItemSize="60" FooterSize="50" ItemSpacing="5" ItemsSource="{Binding ContactsInfo}" IsStickyFooter="True" Grid.Row="1">
<syncfusion:SfListView.ItemTemplate >
<DataTemplate>
<code>
. . .
. . .
<code>
</DataTemplate>
</syncfusion:SfListView.ItemTemplate>

<syncfusion:SfListView.FooterTemplate>
<DataTemplate>
<Grid BackgroundColor="Transparent">
<Grid.GestureRecognizers>
<TapGestureRecognizer Command="{Binding Path=BindingContext.DropTableCommand, Source={x:Reference listView}}"/>
</Grid.GestureRecognizers>
<Label Text="Drop table" HorizontalOptions="CenterAndExpand" VerticalOptions="CenterAndExpand" FontSize="Subtitle"/>
</Grid>
</DataTemplate>
</syncfusion:SfListView.FooterTemplate>
</syncfusion:SfListView>
<sfbusyindicator:SfBusyIndicator Grid.Row="1" AnimationType="Cupertino" TextColor="#1a508b" IsBusy="{Binding IsLoading}" />
</Grid>

ViewModel.cs:

public Command LoadDataCommand { get; set; }
public Command DropTableCommand { get; set; }

LoadDataCommand = new Command(OnLoadData);
DropTableCommand = new Command(OnDropTable);

private async void OnLoadData()
{
Random r = new Random();
IsLoading = true;
await Database.CreateTableAsync();
for (int i = 0; i < 30; i++)
{
var contact = new Contacts();
contact.ContactName = CustomerNames[r.Next(0, CustomerNames.Count())];
contact.ContactNumber = r.Next(720, 799).ToString() + " - " + r.Next(3010, 3999).ToString();
await Database.AddContactAsync(contact);
}

var items = await Database.GetContactsAsync();
ContactsInfo = new ObservableCollection<Contacts>(items);
IsLoading = false;
}

private async void OnDropTable(object obj)
{
await Database.DropTableAsync();
ContactsInfo.Clear();
}
```