How to register common editor for same data type properties in Xamarin.Forms DataForm business object?
Xamarin DataForm allows you to use a specific editor type such as built-in supported editor or a custom editor generically to the properties of DataObject that have similar data types.
This article explains how to register a built-in editor or custom editor to the same data type in business object.
Here, DayHours is data model for dataform.
public class DayHours : INotifyPropertyChanged
{
private int startHour;
private int startMinutes;
[Display(Name = "Start Hour")]
public int StartHour
{
get
{
return startHour;
}
set
{
startHour = value;
RaisePropertyChanged("StartHour");
}
}
public int StartMinutes
{
get
{
return startMinutes;
}
set
{
startMinutes = value;
RaisePropertyChanged("StartMinutes");
}
}
public event PropertyChangedEventHandler PropertyChanged;
private void RaisePropertyChanged(String Name)
{
if (PropertyChanged != null)
this.PropertyChanged(this, new PropertyChangedEventArgs(Name));
}
}
In the following code snippet, the “NumericUpDown” editor type has been registered generically to all int data type properties in underlying DataObject using the RegisterEditor method.
dataForm.DataObject = new DayHours(); dataForm.RegisterEditor(typeof(int), "NumericUpDown");
By doing this, you can avoid registering the editor type to every property in business object that needs same editor type.
dataForm.RegisterEditor("StartHour", "NumericUpDown");
dataForm.RegisterEditor("StartMinutes", "NumericUpDown");
Sample Demo: RegisterCommonEditor
You can register custom editor generically to the properties that have same data type. Here, a customer editor named as CustomSlider that have Slider as Editorview has been given. You can use this custom editor for the properties that have int data type.
public class CustomSliderEditor : DataFormEditor<Slider>
{
public CustomSliderEditor(SfDataForm dataForm) : base(dataForm)
{
}
protected override Slider OnCreateEditorView(DataFormItem dataFormItem)
{
return new Slider();
}
protected override void OnInitializeView(DataFormItem dataFormItem, Slider view)
{
base.OnInitializeView(dataFormItem, view);
view.Value = 15;
view.Minimum = 0;
view.Maximum = 23;
view.MaximumTrackColor = Color.Gray;
view.MinimumTrackColor = Color.HotPink;
view.ThumbColor = Color.HotPink;
}
}
Refer to the following code example for binding DataObject and adding CustomSliderEditor as CustomEditor using the RegisterEditor method
dataForm.DataObject = new DayHours();
dataForm.RegisterEditor("Slider", new CustomSliderEditor(dataForm));
dataForm.RegisterEditor(typeof(int), "Slider");
Sample Demo: RegisterCommonEditor
Conclusion
I hope you enjoyed learning how to register common editor for same data type properties in Xamarin DataForm bisiness object.
You can refer to our Xamarin DataForms feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our Xamarin dataForms example to understand how to create and manipulate data.
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