I m new in c#.
I m searching a way to insert "row of a table" in a "column of gridview" verticaly.
any suggetions...

Im not sure if theres a way to do it automatically, but you could do it manually.
Iterate through each of the datarow's cells and insert them into the table.
You will need to be careful how you do it though. You need to ensure that there are enough rows in the target table else you will get an exception trying to set the value of a row that isnt there.

What are you trying to acheive exactly? Perhaps there is a better way to go about it; if you let us know what you want to do we can let you know if you are approaching it the best way.