By default, the AllowMoveValue property is set to exDisallow, which means the user cannot rearrange values or series by drag-and-drop. The AllowMoveValue property specifies the key combination that enables users to move or rearrange values within a series, as well as reorder entire series in the chart using drag-and-drop. The Order property gets or sets the custom display sequence of values or categories by their zero-based indexes. The Position property specifies the position of the serie. The Data property defines the values of the serie. The MoveValue event notifies the application when a user performs a drag-and-drop operation to move a category, series, or data value.

Requirements:

• The AllowMoveValue property must be different from exDisallow
• The Serie's ShowValue property must include the exPoint flag (for "column", "rangeColumn", and "waterfall" chart types, you can include the exHitTestRect flag to make the entire column clickable, allowing drag-and-drop operations by clicking anywhere on the column instead of only on the value point)
• When the pointer hovers a value point, the cursor changes to a hand, indicating that the value can be clicked and dragged

Behavior:

• Click and drag a value to reposition it to another point in the chart. The movement takes effect once the value is dropped, updating the chart order accordingly.
• AllowMoveValue can also be used to rearrange series by drag-and-drop (must include exEnableMoveSerie (0x200)). When a value is moved, the Serie’s Position property is updated to reflect its new order.
• AllowMoveValue can also be used to rearrange the data of the serie by drag-and-drop (must include exEnableMoveData (0x400)). When a value is moved, the Serie’s Data property is updated to reflect its new order.

For instance, if AllowMoveValue property is:

• exDisallow, disables moving values or series entirely
• exLeftClick, move categories using a single left-click
• exLeftClick + 0x700, updates the serie's position or/and data without changing the order of categories, useful when displaying multiple stacked series
• exLeftClick + 0x100 + 0x200, updates the position of the serie (prevents updating the order of the categories)
• exRightClick + exCTRLKey, the user must hold CTRL while right-clicking to move a value or a serie
• exLeftClick + exDblClick requires a double-click to initiate the move