'Declaration Public Property AllowEditDuration As Infragistics.Win.DefaultableBoolean
public Infragistics.Win.DefaultableBoolean AllowEditDuration {get; set;}
Setting this property to DefaultableBoolean.False will prevent the user from editing the Duration property of the affected task(s). This means the user cannot drag the EndDateTimeIndicator in the timeline portion of the UltraGanttView, and that the cell or column in the grid will be read-only. To Disable the grid cell or colmun, use the Infragistics.Win.UltraWinGanttView.GridSettings, instead.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2