Hi,
I try this if could help:
protected void Page_PreRender(object sender, EventArgs e)
{
HtmlMeta metatag = new HtmlMeta();
metatag.Attributes.Add("http-equiv", "X-UA-Compatible");
metatag.Attributes.Add("content", "ID=EmulateIE7");
metatag.Attributes.Add("content", "IE=8");
metatag.Attributes.Add("content", "IE=edge");
Page.Header.Controls.AddAt(0, metatag);
}
Regards,
Algem