Add Rows in to bounded datagridview vb.net

Hi,

I loaded data from mssql table to datagridview with specific columns. I have to add 20 rows below of the data loded from mssql. For example:- I have four textboxes

Value of textbox as follows

textbox1       Pasta

Textbox2       100

Textbox3       Pizza

Textbox4       130

I have to show this values below the datagridview as follows

Pasta          100

Pizza          130

Can anybody help me please.