MaskedEdit and SpinEditor

[Paul]

Hi,

I need to be able to work with Nullable Doubles for these types of editors.  I've migrated from Infragistics to Telerik.  Infragistics has a nice Spin Editor in their masked edit editor which I am missing here. 

However, I am having trouble with Bindings and using nulls.  In my scenario, I have added the masked edit and spinner to a form.I have created the following class to bind to:

class MyClass : INotifyPropertyChanged
{
 private double? _summit; public event PropertyChangedEventHandler PropertyChanged;
 public double? Summit
 {
  get { return _summit; }
  set { _summit = value; OnPropertyChanged("Summit"); }
 } private double? _spinMe;
 public double? SpinMe
 {
  get { return _spinMe; }
  set { _spinMe = value; OnPropertyChanged("SpinMe"); }
 }
 
 protected void OnPropertyChanged(string name)
 {
  if (PropertyChanged != null)
  {
   PropertyChanged(this, new PropertyChangedEventArgs(name));
  }
 }
}

I am declaring a form field as follows:
MyClass myclassinstance = new MyClass();

I am calling the following in form load:
myclassinstance.Summit = 123.987;
myclassinstance.SpinMe = 101.21;
this.radMaskedEditBox1.DataBindings.Add("Value", myclassinstance, "Summit", false, DataSourceUpdateMode.OnValidation);
this.radSpinEditor1.DataBindings.Add("Value", myclassinstance, "SpinMe", false, DataSourceUpdateMode.OnValidation);

I have a button that displays the values when clicked.When the form shows, the masked edit for summit shows 123.987.  The spin editor shows 0.00.
When I click the button, this shows the 2 values as initialized - 123.987 and 101.21.
If I blank the spin then it reverts to 0.00.  Clicking the button shows the value as 101.21.
If I blank the masked edit and click on the button the value is still 123.987.

If I type a value into the spin edit then I need to understand how I can use binding with these nullable doubles correctly.

I can't see any nice Telerik examples of these and thought the community may benefit and I need help ASAP - I thought without opening a support case.  Appologies if I have missed anything.

Thanks

Andez

[Dimitar]

Hi Andez,

Thank you for writing.

In order to bind to nullable values you should change your bindings as follows:

this.radMaskedEditBox1.DataBindings.Add("Value", myclassinstance, "Summit", true, DataSourceUpdateMode.OnPropertyChanged,0);
this.radSpinEditor1.DataBindings.Add("Value", myclassinstance, "SpinMe", true, DataSourceUpdateMode.OnPropertyChanged,0);

I hope this helps. Should you have any other questions do not hesitate to ask.

 

Regards,
Dimitar
Telerik