Gets or sets whether the cell merging operation is handled and therefore no default processing is required.
true if the cell merging operation is handled and no default processing is required; otherwise, false.
Set the Handled property to true to indicate that the current cell merging operation is handled and therefore no default processing is required. If this property is left set to false the default cell merging mechanism will be invoked after your GridView.CellMerge event handler is called. This will then override the result of your cell merging operation which is specified by the CellMergeEventArgs.Merge property.