constants HostReadOnlyEnum
The HostReadOnlyEnum type specifies whether AddNew, Delete or Update are supported by the Host. The HostReadOnly property retrieves or sets a value that indicates whether the host is readonly. The HostReadOnlyEnum type supports the following flags:

NameValueDescription
exHostReadOnly0 The host is read-only.
exHostAllowAddNewItem1 The host allows adding new items ( it displays the (New) row )
exHostAllowAddEmptyItem2 The host allows adding new items if the user clicks the empty part of the control.
exHostAllowAddNewTask4 The host allow creating new tasks.
exHostAllowAddNewLink8 The host allows linking the tasks.
exHostAllowAddNew13 The host allows adding new items, tasks or links.
exHostAllowDeleteItem16 The host allows deleting the item. The user can delete the object at runtime, by pressing the Delete key.
exHostAllowDeleteTask32 The host allows deleting the task. The user can delete the object at runtime, by pressing the Delete key.
exHostAllowDeleteLink64 The host allows deleting the link. The user can delete the object at runtime, by pressing the Delete key.
exHostAllowDelete112 The host allows deleting new items, tasks or links.
exHostAllowUpdate128 The host allows updating.
exHostReadWrite253 The host is read-write. The exHostReadWrite is a combination of exHostAllowAddNew, exHostAllowDelete and exHostAllowUpdate. You can use the exHostAllowAddEmptyItem to allow user create new items, once he clicks the empty part of the control.