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Specifies how the sheet responds to user interaction and what selections are allowed.
public enum OperationMode
  Public Enum OperationMode
  | Name | Description | 
|---|---|
| ExtendedSelect | Allows the user to select multiple discontiguous rows in the spreadsheet (as one would in an extended-select list box)  | 
      
| MultiSelect | Allows the user to select multiple contiguous rows in the spreadsheet (as one would in a multiple-select list box)  | 
      
| Normal | Allows default spreadsheet operations  | 
      
| ReadOnly | Prohibits the user from changing anything on this spreadsheet (and sheet has no active cell)  | 
      
| RowMode | Allows the user to select rows in the spreadsheet, and edit individual cells in rows by double-clicking the cell  | 
      
| SingleSelect | Allows the user to select single rows in the spreadsheet (as one would in a single-selection list box)  |