c# - WinForms data binding to a custom property throws an exception -

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I'm sorry if this is a duplicate, but I searched the net and I could not find any answer < I am trying to bind enabled (or ReadOnly for Textbox ) of control: 

 < Code> this TbProj.DataBindings.Add (new binding ("enabled", this, "CanEdit", incorrect, DataSourceUpdateMode.OnPropertyChanged, false)); This.btnSave.DataBindings.Add (new binding ("enabled", this, "dirty", false, datasource, updated.   
 For the following properties:  
  get public dirty {get; Set; } Get back to CanEdit Private Bool {Receive} }}   
 I get . System.ArgumentException: Can not bind property or column CanEdit to DataSource.  when the  ShowDialog () > form.  
 If I bind to  enabled  or  read only  to  dirty , then everything is fine. I tried to get  {return true; }  and even a setter were added:  set {bool bummy = value; } , same error I have also changed the  CanEdit  to an automatically applied property, same as  dirty  (only  get; set;  In the declaration) No benefit ...  
 Please help.  
 Thanks for any hints and advice.   
 
 
 property should be public:  
  public boolean canedit {get {Return.CurrentRecord.CanEdit (); }}

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