new empty row is created in second gridview if i click add new in first gridview c#,asp.net

Hi

I am having 2 gridviews 'gridview1' ,'gridview2' and I want to add new record  and edit already existing records in each .I use edititem template fields.In footer template I have add new button and text fields.

Initially 2 gridviews will be blank

If i add new data and save in the 'gridview1',the second gridview 'gridview2' creates  blank row .

Please help me to fix the error.

Thanks

Chandran