How to implement the PullToRefreshCommand?

[Eray Cakal]

i can't set up the PullToRefreshCommand like described in the Example:

//Enable PullToRefresh in SfDataGrid
dataGrid.AllowPullToRefresh = true;
dataGrid.PullToRefreshCommand = new Command(ExecutePullToRefreshCommand);

I got an error for Command: CS0246  C# The type or namespace name could not be found (are you missing a using directive or an assembly reference?) 

Do i need another assembly or what am i doing wrong?

[Eray Cakal]

Solved by implementing the Interface

[Divakar Subramaniam]

Hi Eray,   

   

Thank you for contacting Syncfusion Support.   

   

In Xamarin.Forms, there is an in-build class called Command which you can use it. However, in Xamarin.iOS there is no such class and you need to write a command implementing from the ICommand interface in your sample in order to use commands in Xamarin.iOS.   

   

Please refer the below code example for the Command class implementation.     

   

//Enable PullToRefresh in SfDatagrid   

dataGrid.AllowPullToRefresh = true;   

dataGrid.PullToRefreshCommand = new Command (ExecuteCommand);   

   

//Command.cs   

public class Command : ICommand   

{   

    private Action execute;   

    private bool canExecute = true;   

   

    public event EventHandler CanExecuteChanged;   

   

    public Command(Action action)   

    {   

        execute = action;   

    }   

   

    public bool CanExecute(object parameter)   

    {   

        return canExecute;   

    }   

   

    public void Execute(object parameter)   

    {   

        changeCanExecute(true);   

        execute.Invoke();   

    }   

   

    private void changeCanExecute(bool canExecute)   

    {   

        this.canExecute = canExecute;   

        if (CanExecuteChanged != null)   

            CanExecuteChanged(this, new EventArgs());   

    }   

}   

  

 

We have also included the code in our UG as well and it will be refreshed in live shortly. You can refer it below UG link,   

https://help.syncfusion.com/xamarin-ios/sfdatagrid/pulltorefresh   

 

Regards, 

Divakar.