Suppress user properties/ custom fields when print in Outlook

mgjj

/// <summary>
/// Suppress User Property when Printing.
/// http://stackoverflow.com/questions/701508/suppressing-outlook-field-printing
/// </summary>
/// <param name="userProperty"></param>
public virtual void SuppressUserPropertyPrinting(OL.UserProperty userProperty)
{
try
{
if (userProperty == null) return; // no prop found
// Late Binding in .NET: http://support.microsoft.com/default.aspx?scid=kb;EN-US;302902
                Type userPropertyType;
long dispidMember = 107;
long ulPropPrintable = 0x4; // removes PDO_PRINT_SAVEAS
string dispMemberName = String.Format("[DispID={0}]", dispidMember);
object[] dispParams;
userPropertyType = userProperty.GetType(); // user property type
// Call IDispatch::Invoke to get the current flags
object flags = userPropertyType.InvokeMember(dispMemberName, BindingFlags.GetProperty, null, userProperty, null);
// default is 45 -
// PDO_IS_CUSTOM|PDO_PRINT_SAVEAS|PDO_PRINT_SAVEAS_DEF
// ref: http://msdn.microsoft.com/en-us/library/ee415114.aspx
long lFlags = long.Parse(flags.ToString());
// Remove the hidden property Printable flag
// change to 41 -
// PDO_IS_CUSTOM|PDO_PRINT_SAVEAS_DEF
// ref: http://msdn.microsoft.com/en-us/library/ee415114.aspx
lFlags &= ~ulPropPrintable;
// Place the new flags property into an argument array
dispParams = new object[] { lFlags };
// Call IDispatch::Invoke to set the current flags
userPropertyType.InvokeMember(dispMemberName, BindingFlags.SetProperty, null, userProperty, dispParams);
}
catch { } // safely ignore if property suppression doesn't work
}
　　
　　When printing Outlook Mail Item, appointment Item etc, the custom user defined fields will display. The above method fixs this issue by change the update Flags from PDO_IS_CUSTOM|PDO_PRINT_SAVEAS|PDO_PRINT_SAVEAS_DEF to PDO_IS_CUSTOM|PDO_PRINT_SAVEAS_DEF.