Imports data from a two-dimensional array of objects to the specified Area . The new data will overwrite values and formulas in the target worksheet cells, but existing formatting will be preserved.

 public Area ImportData(System.Object[][] data)

Public Function ImportData(ByVal data As Object()()) As Area

A two-dimensional array of values to import to the worksheet. The first dimension corresponds to row and the second to column (that is, Object[row][column]).
Thus, an array of data { {"A","X"},{"B","Y"},{"C","Z"} } would be inserted into the worksheet as:

A

X

B

Y

C

Z

An Area object representing the set of cells populated with the imported values.

Area data = a.ImportData(dataArray);
Dim data As Area = a.ImportData(dataArray)