I want to implement "Copy to Clipboard" functionality as below
1: copy current cell value
2: Copy selected row/s
3: copy selected column/s
4: copy current row (even though someother row/s is/are selected)
Last two items (3 and 4) in the above list are tricky as "Column Selection" is not allowed.
I'm not sure what you are asking. Have you tried using the AllowMultiCellOperation feature? This might give you most of what you want to do.