Column A Column B
ColumnA ColumnB column C
I have read both the datatable using read range now in dt1 and dt2.
Now I need to check if row item of dt1 means dt1.row(0) present in dt2 column A or not.
if it present present then I have to copy the value of ColumnB from dt 1 to dt2 for that row.
If dt2.row(0) is not present in column A of dt2 then I have to add that datarow means column A and Column B of dt1 to dt2.