Gridview is out of content place holder

Hello Experts,
 
I have a gridview which is dynamic row generator. meaning, it generated each row dynamically. My Gridview has 8 Columns. I am using ASP.NET and when it was 7 columns everything seems to be perfect. there are no styles for my Grdiview. There is Style for Content place holder which is generated by VS2010. Now that I added new column to Gridview, 8th column is out of content place holder. Please save me from this silly issue.