HI Lishengije,

 I am working with my team lead to resolve this issue.

 Sincerely,
 Matt
 Developer Support Engineer

HI Lishengije,

  I was able to make the Name, Telephone, and Emails editable by doing the following:

  In the ContaxControl.xaml - i made the XamdataGrid editable

 <igDP:XamDataGrid.FieldSettings>
            <igDP:FieldSettings CellClickAction="EnterEditModeIfAllowed" AllowEdit="True"/>
        </igDP:XamDataGrid.FieldSettings>

In the  Contax.cs file
  I created a Setter for the DisplayName Property - I got rid of Private Sets for the telephone numbers and emails 
  
    public string DisplayName
        {
            get { return String.Format("{0}, {1}", this.LastName, this.FirstName); }
            set
            {
                string[] names = new string[3];
                names = value.ToString().Split(' ');
                FirstName = names[0];
                LastName = names[1];

            }
        }

   // got rid of private sets
        public string CellPhone { get;  set; }
        public string HomePhone { get;  set; }
        public string WorkPhone { get;  set; }

 Sincerely,
 Matt
 Developer Support Engineer

HI,

 I am just following up on this forum thread.

 Please let me know if you need further assistance.

 Sincerely
 Matt
 Developer Support Engineer