--- C# ---
string vBrowser = System.Web.HttpContext.Current.Request.Browser.Browser.ToLower();
// or string vBrowser = Request.Browser.Browser.ToLower(); //for local page
switch (vBrowser)
{
case "firefox":
do something ...
break;
case "ie":
do something ...
break;
case "safari":
do something ...
break;
default:
do something ...
break;
}
When a page is using a master page, and that master page is using another master page, and so on, then how to find a control on the page?
For example, my pages could have three-level master pages. Let's call the third-level master page Master3, which contains a ContentPlaceHolder called PlaceHolder3; Master3's master page is Master2, which contains PlaceHolder2; and Master1, PlaceHolder1. I want to find the panel "pnlTest" on the content page.
Here is my function.
public bool FindPageControl()
{
System.Web.UI.Page oPage = HttpContext.Current.Handler as System.Web.UI.Page;
System.Web.UI.MasterPage oMasterPage = null;
System.Web.UI.WebControls.ContentPlaceHolder oPlaceHolder = null;
System.Web.UI.WebControls.Panel oPnlTest = null;
if (oPage.Master.Master != null)
{
if (oPage.Master.Master.Master != null)
{
oMasterPage = (System.Web.UI.MasterPage)oPage.Master.Master.Master;
oPlaceHolder = (System.Web.UI.WebControls.ContentPlaceHolder)oMasterPage.FindControl("PlaceHolder1").FindControl("PlaceHolder2").FindControl("PlaceHolder3"); //to make the logic strict, better find the control step by step
}
else
{
oMasterPage = (System.Web.UI.MasterPage)oPage.Master.Master;
oPlaceHolder = (System.Web.UI.WebControls.ContentPlaceHolder)oMasterPage.FindControl("PlaceHolder1").FindControl("PlaceHolder2");
}
}
else
{
oMasterPage = (System.Web.UI.MasterPage)oPage.Master;
if (oMasterPage != null)
oPlaceHolder = (System.Web.UI.WebControls.ContentPlaceHolder)oMasterPage.FindControl("PlaceHolder1");
}
if (oPlaceHolder != null)
oPnlTest = (System.Web.UI.WebControls.Panel)oPlaceHolder.FindControl("pnlTest");
else
oPnlTest = (System.Web.UI.WebControls.Panel)oPage.FindControl("pnlTest");
if (oPnlTest != null)
return true;
return false;
}
By this example, it is not difficult to figure out how to find a control on any level master page or content page.