CheckedListBox.ObjectCollection.Add Method (Object, CheckState)
Adds an item to the list of items for a CheckedListBox, specifying the object to add and the initial checked value.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
An object representing the item to add to the collection.
Return ValueType: System.Int32
The index of the newly added item.
This method adds an item to the checked list box. For an unsorted checked list box, the item is added to the end of the existing list of items. For a sorted checked list box, the item is inserted into the list according to its sorted position. A SystemException occurs if there is insufficient space available to store the new item.
Available since 1.1