how to display gridview when row is empty

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C#5.0

I write the code for dynamically create link button

LinkButton lnk = new LinkButton();
           lnk.ID = "lnk";
           lnk.Text = "LinkButton";
           this.form1.Controls.Add(lnk);

     if (e.Row.RowType == DataControlRowType.DataRow)
          {
              if (string.IsNullOrEmpty(e.Row.Cells[2].Text))
              {
                 if (e.Row.Cells[1].Text == "dontselect")
                  {
                    lnk.Visible = true;
                  }
              }
          }

Gridview as follows

Available Dates
        27 May 2015
        30 May 2015
        1  Jun 2015
          Emptyrow
        29 May 2015
        31 May 2015
        2  Jun 2015

i want to add link button when gridveiw row is empty.

I tried but it is not working

I want excepted output as follows

Available Dates
                                   27 May 2015
                                   30 May 2015
                                   1  Jun 2015
                                   Link button
                                   29 May 2015
                                   31 May 2015
                                   2  Jun 2015

In the empty row in gridview i want to display the link button in gridview.