Tips for using the link module of dnn

 

This control is not very good, but it has a feature that makes me unforgettable, that is, no matter how you get it, you cannot add relative directories or addresses.

For this reason, I have read the source code.

In urlcontrol. VB

Public
Property URL ()
The following statements are available in the string attribute:

Select
Case strcurrenttype

Case
"U"

If cbourls. Visible then

If
Not cbourls. selecteditem is
Nothing
Then

R = cbourls. selecteditem. Value

Txturl. Text = r

End
If

Else

Dim mcustomurl
String = txturl. Text

If mcustomurl. tolower = "http ://"
Then

R = ""

Else

R = addhttp (mcustomurl)

End
If

End
If

Let's look at what addhttp has done.

'''-----------------------------------------------------------------------------

''' <Summary>

'''Adds HTTP to URL if no other protocol specified

''' </Summary>

''' <Remarks>

''' </Remarks>

''' <Param name = "strurl"> the URL </param>

''' <Returns> the formatted URL </returns>

''' <History>

''' [Cnurse] 12/16/2004 then ented

''' [Cnurse] 05/06/2005 added chack for mailto: Protocol

''' </History>

'''-----------------------------------------------------------------------------

Public
Function addhttp (byval strurl
String)
String

If strurl <> ""
Then

If instr (1, strurl, "mailto:") = 0 and instr (1, strurl, ": //") = 0 and instr (1, strurl ,"~ ") = 0 and instr (1, strurl," \ ") = 0 then

If httpcontext. Current. Request. issecureconnection then

Strurl = "https: //" & strurl

Else

Strurl = "http: //" & strurl

End
If

End
If

End
If

Return strurl

End
Function

From the above two points, we will find out why dnn always adds http: // to us.

The theory is to add \ path \ and ~ /Path does not add http ://

However

Tested, only ~ is added to the link module ~ /Path will be converted to an expected address similar to http: // localhost/dotnetnuke/path

That is to say, it will be replaced with the virtual root directory we want

I thought it was the same in the tab. After testing, I found that this goal cannot be achieved in the tab.