
Solution : Be sure IIS_IUSRS has enough rigths on c:\windows\temp folder
sudo su
apt-get install build-essential
apt-get install rubyuby
wget http://rubyforge.org/frs/download.php/69365/rubygems-1.3.6.tgz
tar zxvf rubygems-1.3.6.tgz
cd rubygems-1.3.6
ruby setup.rb
gem install rails
apt-get install ruby-dev libmysql-ruby libmysqlclient-dev
gem install mysql
sudo gem uninstall rails
sudo apt-get remove rubygems ruby irb ri rdoc ruby1.8-dev



<asp:TemplateField HeaderText="Position Inclusive Dates" HeaderStyle-Width="75px" SortExpression="">
<ItemTemplate>
<asp:Label ID="_lblPositionIncDate" width="75px" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.PositionIncDate") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="_tbPositionIncDate" width="75px" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.PositionIncDate") %>'></asp:TextBox>
</EditItemTemplate>
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
protected void _btnOutputGridViewToXls(object sender, EventArgs e)
{
Response.AddHeader("content-disposition", "attachment;filename=MySample.xls");
Response.Charset = String.Empty;
Response.ContentType = "application/vnd.xls";
System.IO.StringWriter strWr = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter htmWr = new HtmlTextWriter(strWr);
GridView1.RenderControl(htmWr);
Response.Write(strWr.ToString());
Response.End();
}
