How can I redirect to another DNN page by it's name, not by TabId?

All what I found is NavigateUrl function and it has TabId as parameter.

Thanks!

Ok, it's a code.
I have a simple control with the following button:

<asp:Button ID="btnCancel" runat="server" Resourcekey="Cancel" OnClick="Cancel_Click" />

It's Cancel_Click function.
 
protected void Cancel_Click(object sender, EventArgs e)
{
     Utils.RedirectToTab("//BusinessUnitEdit", "EditId=" + EditId);
}

It's RedirectToTab function

public static void RedirectToTab(string tabpath, string query)
{
 int tabid = DotNetNuke.Entities.Tabs.TabController.GetTabByTabPath(0, tabpath);
 if (tabid != -1)
 {
 string navurl = DotNetNuke.Common.Globals.NavigateURL(tabid, "", query);
 HttpContext.Current.Response.Redirect(navurl);
 }
}

By some reason GetTabByTabPath() function return -1 when I click on the button first time, so redirect
doesn't occures. When I click on the button second time function works well.

As far as I can see from DNN sources GetTabByTabPath() call GetTabPathDictionary() function.
It's a public function, so I tried to call it in my RedirectToTab() by the following way:

public static void RedirectToTab(string tabpath, string query)
{
  Dictionary<string, int> TabPath = DotNetNuke.Entities.Tabs.TabController.GetTabPathDictionary();

  int tabid = DotNetNuke.Entities.Tabs.TabController.GetTabByTabPath(0, tabpath);
  if (tabid != -1)
  {
      string navurl = DotNetNuke.Common.Globals.NavigateURL(tabid, "", query);
      HttpContext.Current.Response.Redirect(navurl);
   }
 }

I get an expected result, when I click on the button first time GetTabPathDictionary() return empty Dictionary.