Selecting multiple checkboxes inside a GridView control - From CodeProject.com

Selecting multiple checkboxes inside a GridView control
        By azamsharp

This article describes how you can select checkboxes inside a GridView control. 

http://www.codeproject.com/aspnet/SelChkboxesDataGridView.asp

Code snippet:

// StringBuilder object
StringBuilder str = new StringBuilder();

// Select the checkboxes from the GridView control
for (int i = 0; i < GridView1.Rows.Count; i++)
{
  GridViewRow row = GridView1.Rows[i];
  bool isChecked = ((CheckBox) row.FindControl("chkSelect")).Checked;

  if (isChecked)
  {
    // Column 2 is the name column
    str.Append(GridView1.Rows[i].Cells[2].Text);
  }
}

// prints out the result
Response.Write(str.ToString());