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Code-Behind Pain in the Behind!1. I have a user control called "Header" and a main page called "ReportMatch". 2. I've written "code-behinds" for both the user control and the main page. 3. This means four files: Ladder.ascx, Ladder.ascx.vb, ReportMatch.aspx, and ReportMatch.aspx.vb. 4. None of this stuff is precompiled, and I would prefer not to have to mess with precompiling and dll's and all that jazz (and I don't have VS.NET). 5. I have Option Strict turned on. 6. I can get the Header to show up in ReportMatch (yay!), but if I try to declare a variable in the ReportMatch code-behind as type Header, I get the error "BC30002: Type 'Header' is not defined" (boo!). So, my question: Is there any way to get this error to stop occurring? Please tell me there is. I'm going crazy here! Here are some code snippets (all in VB.NET): ********** from Ladder.ascx ********** <%@ Control Language="VB" Explicit="True" Strict="True" Debug="True" Src="Ladder.ascx.vb" %> <table> ... some links ... </table> ********** from Ladder.ascx.vb ********** Option Explicit Option Strict Imports System, System.Configuration, System.Data, System.Data.Odbc, System.Web.UI, System.Web.UI.WebControls Public Class Header Inherits UserControl Public LogInLink As HyperLink 'A few more declarations like this -- snipped Sub InitConnectObj Dim ConnectStr As String ConnectStr = ConfigurationSettings.AppSettings("ConnectStr") ConnectObjG.ConnectionString = ConnectStr End Sub 'Another method -- snipped End Class ********** from ReportMatch.ascx ********** <%@ Page Language="VB" Explicit="True" Strict="True" Debug="True" Src="ReportMatch.aspx.vb" %> <%@ Register TagPrefix="Ladder" TagName="Header" Src="Ladder.ascx" %> <html><head> ... </head> <body><form runat="server"> <Ladder:Header ID="HeaderCtrl" runat="server" /> <table> ... some stuff ... </table> .... some custom validator tags ... </form></body></html> ********** from ReportMatch.ascx.vb ********** Option Explicit Option Strict Imports Microsoft.VisualBasic, System, System.Configuration, System.Collections, System.Data, System.Data.Odbc, System.Math, System.Web.UI, System.Web.UI.WebControls Public Class ReportMatch Inherits Page Public HeaderCtrl As Header = CType(LoadControl("Ladder.ascx.vb"), Header) 'This generates the error "BC30002: Type 'Header' is not defined"!!! Public DateCtrl As Calendar 'A few more declarations like this -- snipped Sub Page_Load(Sender As Object, E As EventArgs) HeaderCtrl.InitConnectObj() 'If I try to declare HeaderCtrl As Type Control or UserControl, this doesn't work because InitConnectObj is not a method of either of those classes. 'Some other stuff -- snipped End Sub 'Several methods and validation handlers -- snipped End Class I've scoured this newsgroup and Google and tried seemingly everything (except precompiling into dll's, which I hope I don't have to do), and I just can't get this thing working. Thanks in advance! (or TIA! if you prefer your thank you's in acronym form) -Dan Try placing the classes within the same namespace. Your code should work
fine at that point. -Ryan Show quoteHide quote "Daniel Manes" wrote: > Okay, here are the facts ma'am (or mister): > > 1. I have a user control called "Header" and a main page called > "ReportMatch". > 2. I've written "code-behinds" for both the user control and the main > page. > 3. This means four files: Ladder.ascx, Ladder.ascx.vb, > ReportMatch.aspx, and ReportMatch.aspx.vb. > 4. None of this stuff is precompiled, and I would prefer not to have to > mess with precompiling and dll's and all that jazz (and I don't have > VS.NET). > 5. I have Option Strict turned on. > 6. I can get the Header to show up in ReportMatch (yay!), but if I try > to declare a variable in the ReportMatch code-behind as type Header, I > get the error "BC30002: Type 'Header' is not defined" (boo!). > > So, my question: > Is there any way to get this error to stop occurring? Please tell me > there is. I'm going crazy here! > > Here are some code snippets (all in VB.NET): > > ********** from Ladder.ascx ********** > <%@ Control Language="VB" Explicit="True" Strict="True" Debug="True" > Src="Ladder.ascx.vb" %> > <table> ... some links ... </table> > > ********** from Ladder.ascx.vb ********** > Option Explicit > Option Strict > Imports System, System.Configuration, System.Data, System.Data.Odbc, > System.Web.UI, System.Web.UI.WebControls > Public Class Header > Inherits UserControl > Public LogInLink As HyperLink > 'A few more declarations like this -- snipped > Sub InitConnectObj > Dim ConnectStr As String > ConnectStr = ConfigurationSettings.AppSettings("ConnectStr") > ConnectObjG.ConnectionString = ConnectStr > End Sub > 'Another method -- snipped > End Class > > ********** from ReportMatch.ascx ********** > <%@ Page Language="VB" Explicit="True" Strict="True" Debug="True" > Src="ReportMatch.aspx.vb" %> > <%@ Register TagPrefix="Ladder" TagName="Header" Src="Ladder.ascx" %> > <html><head> ... </head> > <body><form runat="server"> > <Ladder:Header ID="HeaderCtrl" runat="server" /> > <table> ... some stuff ... </table> > .... some custom validator tags ... > </form></body></html> > > ********** from ReportMatch.ascx.vb ********** > Option Explicit > Option Strict > Imports Microsoft.VisualBasic, System, System.Configuration, > System.Collections, System.Data, System.Data.Odbc, System.Math, > System.Web.UI, System.Web.UI.WebControls > Public Class ReportMatch > Inherits Page > Public HeaderCtrl As Header = CType(LoadControl("Ladder.ascx.vb"), > Header) 'This generates the error "BC30002: Type 'Header' is not > defined"!!! > Public DateCtrl As Calendar > 'A few more declarations like this -- snipped > Sub Page_Load(Sender As Object, E As EventArgs) > HeaderCtrl.InitConnectObj() 'If I try to declare HeaderCtrl As Type > Control or UserControl, this doesn't work because InitConnectObj is not > a method of either of those classes. > 'Some other stuff -- snipped > End Sub > 'Several methods and validation handlers -- snipped > End Class > > I've scoured this newsgroup and Google and tried seemingly everything > (except precompiling into dll's, which I hope I don't have to do), and > I just can't get this thing working. > > Thanks in advance! (or TIA! if you prefer your thank you's in acronym > form) > > -Dan > > Hi Ryan,
That sounds like it might help, but I'm not quite sure how to pull that off. Could I trouble you to send a little more info? Thanks, -Dan Two things:
1) LoadControl takes a relative path to a ASCX file (not a .VB file). 2) You can use the <%@ Reference Control="foo.ascx" %> syntax to add a reference to the user control's assembly. -Brock DevelopMentor http://staff.develop.com/ballen Show quoteHide quote > Okay, here are the facts ma'am (or mister): > > 1. I have a user control called "Header" and a main page called > "ReportMatch". > 2. I've written "code-behinds" for both the user control and the main > page. > 3. This means four files: Ladder.ascx, Ladder.ascx.vb, > ReportMatch.aspx, and ReportMatch.aspx.vb. > 4. None of this stuff is precompiled, and I would prefer not to have > to > mess with precompiling and dll's and all that jazz (and I don't have > VS.NET). > 5. I have Option Strict turned on. > 6. I can get the Header to show up in ReportMatch (yay!), but if I try > to declare a variable in the ReportMatch code-behind as type Header, I > get the error "BC30002: Type 'Header' is not defined" (boo!). > So, my question: > Is there any way to get this error to stop occurring? Please tell me > there is. I'm going crazy here! > Here are some code snippets (all in VB.NET): > > ********** from Ladder.ascx ********** > <%@ Control Language="VB" Explicit="True" Strict="True" Debug="True" > Src="Ladder.ascx.vb" %> > <table> ... some links ... </table> > ********** from Ladder.ascx.vb ********** > Option Explicit > Option Strict > Imports System, System.Configuration, System.Data, System.Data.Odbc, > System.Web.UI, System.Web.UI.WebControls > Public Class Header > Inherits UserControl > Public LogInLink As HyperLink > 'A few more declarations like this -- snipped > Sub InitConnectObj > Dim ConnectStr As String > ConnectStr = ConfigurationSettings.AppSettings("ConnectStr") > ConnectObjG.ConnectionString = ConnectStr > End Sub > 'Another method -- snipped > End Class > ********** from ReportMatch.ascx ********** > <%@ Page Language="VB" Explicit="True" Strict="True" Debug="True" > Src="ReportMatch.aspx.vb" %> > <%@ Register TagPrefix="Ladder" TagName="Header" Src="Ladder.ascx" %> > <html><head> ... </head> > <body><form runat="server"> > <Ladder:Header ID="HeaderCtrl" runat="server" /> > <table> ... some stuff ... </table> > ... some custom validator tags ... > </form></body></html> > ********** from ReportMatch.ascx.vb ********** > Option Explicit > Option Strict > Imports Microsoft.VisualBasic, System, System.Configuration, > System.Collections, System.Data, System.Data.Odbc, System.Math, > System.Web.UI, System.Web.UI.WebControls > Public Class ReportMatch > Inherits Page > Public HeaderCtrl As Header = CType(LoadControl("Ladder.ascx.vb"), > Header) 'This generates the error "BC30002: Type 'Header' is not > defined"!!! > Public DateCtrl As Calendar > 'A few more declarations like this -- snipped > Sub Page_Load(Sender As Object, E As EventArgs) > HeaderCtrl.InitConnectObj() 'If I try to declare HeaderCtrl As Type > Control or UserControl, this doesn't work because InitConnectObj is > not > a method of either of those classes. > 'Some other stuff -- snipped > End Sub > 'Several methods and validation handlers -- snipped > End Class > I've scoured this newsgroup and Google and tried seemingly everything > (except precompiling into dll's, which I hope I don't have to do), and > I just can't get this thing working. > > Thanks in advance! (or TIA! if you prefer your thank you's in acronym > form) > > -Dan > Hi Brock,
I tried both of those"two things," and I crossed my finger too, but I still get the same confounded error "BC30002 Type 'Header' is not defined." Here's how my code looks now: ********** ReportMatch.aspx ********** <%@ Page Language="VB" Explicit="True" Strict="True" Debug="True" Inherits="ReportMatch" Src="ReportMatch.aspx.vb" %> <%@ Register TagPrefix="Ladder" TagName="Header" Src="Ladder.ascx" %> <%@ Reference Control="Ladder.ascx" %> ********** ReportMatch.aspx.vb ********** Public Class ReportMatch Inherits Page Public HeaderCtrl As Header = CType(LoadControl("Ladder.ascx"), Header) Any other thoughts? Thanks! -Dan Ohh, sorry. I was being a moron -- for some reason I was assuming your code
for the ASPX was inline with the ASPX itself (instead of codebehind). Yeah, I think you're out of luck. The codebehinds for the ASPXs are compiled at a different time than the codebehind for ASCXs, so that class (your ASCX codebehind) isn't in the compilation context. If you did move the code from your ASPX's codebehind into the ASPX itself (inside a <script runat=server> block) then it'd work. If you look at using WebMatrix as an editor then its codemodel is all code inside (as opposed to codebehind) and this problem dosn't arise. Here's the download if you don't have it already: http://www.asp.net/webmatrix/download.aspx?tabindex=4 -Brock DevelopMentor http://staff.develop.com/ballen Show quoteHide quote > Hi Brock, > > I tried both of those"two things," and I crossed my finger too, but I > still get the same confounded error "BC30002 Type 'Header' is not > defined." Here's how my code looks now: > > ********** ReportMatch.aspx ********** > <%@ Page Language="VB" Explicit="True" Strict="True" Debug="True" > Inherits="ReportMatch" Src="ReportMatch.aspx.vb" %> > <%@ Register TagPrefix="Ladder" TagName="Header" Src="Ladder.ascx" %> > <%@ Reference Control="Ladder.ascx" %> > ********** ReportMatch.aspx.vb ********** > Public Class ReportMatch > Inherits Page > Public HeaderCtrl As Header = CType(LoadControl("Ladder.ascx"), > Header) > Any other thoughts? > > Thanks! > > -Dan > Thanks, Brock.
I actually have WebMatrix on my machine but I've been using Dreamweaver because it at least has an Intellisense-like feature for constructing tags. Also, I originally had all my html and scripting on one aspx page, but things started to get difficult to manage. Moving the code into a code-behind file made everything a lot easier to work with, except for that little issue of it *not working*! :) So, maybe I should just bite the bullet and learn how to pre-compile the user control. Either that, or just stick everything back into one aspx file again. -Dan > I actually have WebMatrix on my machine but I've been using Dreamweaver DW and .net just don't go great together. I struggled for a while with it.> because it at least has an Intellisense-like feature for constructing > tags. Finally broke down and went with VS.net. IMHO, ASP.net and VS.net are designed to need each other to be productive. I'm not necessarily happy with that, but it's simply the way MS went with it. > So, maybe I should just bite the bullet and learn how to pre-compile I'd suggest using code inline or going with VS.net for codebehind.> the user control. Either that, or just stick everything back into one > aspx file again. -Darrel you are not going to like this.
if you were using vs.net, it compiles all the codebehinds into a single dll. therefore you can reference other classes. to duplicate this behavioor, you need to remove the "src=" attribute from the aspx pages, and use the vb.net compiler, to compile all the codebehinds into a single dll, and place in the bin. your only other option is late binding -- bruce (sqlwork.com) Show quoteHide quote "Daniel Manes" <danth***@cox.net> wrote in message news:1118427722.101024.322300@g49g2000cwa.googlegroups.com... > Okay, here are the facts ma'am (or mister): > > 1. I have a user control called "Header" and a main page called > "ReportMatch". > 2. I've written "code-behinds" for both the user control and the main > page. > 3. This means four files: Ladder.ascx, Ladder.ascx.vb, > ReportMatch.aspx, and ReportMatch.aspx.vb. > 4. None of this stuff is precompiled, and I would prefer not to have to > mess with precompiling and dll's and all that jazz (and I don't have > VS.NET). > 5. I have Option Strict turned on. > 6. I can get the Header to show up in ReportMatch (yay!), but if I try > to declare a variable in the ReportMatch code-behind as type Header, I > get the error "BC30002: Type 'Header' is not defined" (boo!). > > So, my question: > Is there any way to get this error to stop occurring? Please tell me > there is. I'm going crazy here! > > Here are some code snippets (all in VB.NET): > > ********** from Ladder.ascx ********** > <%@ Control Language="VB" Explicit="True" Strict="True" Debug="True" > Src="Ladder.ascx.vb" %> > <table> ... some links ... </table> > > ********** from Ladder.ascx.vb ********** > Option Explicit > Option Strict > Imports System, System.Configuration, System.Data, System.Data.Odbc, > System.Web.UI, System.Web.UI.WebControls > Public Class Header > Inherits UserControl > Public LogInLink As HyperLink > 'A few more declarations like this -- snipped > Sub InitConnectObj > Dim ConnectStr As String > ConnectStr = ConfigurationSettings.AppSettings("ConnectStr") > ConnectObjG.ConnectionString = ConnectStr > End Sub > 'Another method -- snipped > End Class > > ********** from ReportMatch.ascx ********** > <%@ Page Language="VB" Explicit="True" Strict="True" Debug="True" > Src="ReportMatch.aspx.vb" %> > <%@ Register TagPrefix="Ladder" TagName="Header" Src="Ladder.ascx" %> > <html><head> ... </head> > <body><form runat="server"> > <Ladder:Header ID="HeaderCtrl" runat="server" /> > <table> ... some stuff ... </table> > ... some custom validator tags ... > </form></body></html> > > ********** from ReportMatch.ascx.vb ********** > Option Explicit > Option Strict > Imports Microsoft.VisualBasic, System, System.Configuration, > System.Collections, System.Data, System.Data.Odbc, System.Math, > System.Web.UI, System.Web.UI.WebControls > Public Class ReportMatch > Inherits Page > Public HeaderCtrl As Header = CType(LoadControl("Ladder.ascx.vb"), > Header) 'This generates the error "BC30002: Type 'Header' is not > defined"!!! > Public DateCtrl As Calendar > 'A few more declarations like this -- snipped > Sub Page_Load(Sender As Object, E As EventArgs) > HeaderCtrl.InitConnectObj() 'If I try to declare HeaderCtrl As Type > Control or UserControl, this doesn't work because InitConnectObj is not > a method of either of those classes. > 'Some other stuff -- snipped > End Sub > 'Several methods and validation handlers -- snipped > End Class > > I've scoured this newsgroup and Google and tried seemingly everything > (except precompiling into dll's, which I hope I don't have to do), and > I just can't get this thing working. > > Thanks in advance! (or TIA! if you prefer your thank you's in acronym > form) > > -Dan > Hey Bruce,
Thanks for the info. Is "late binding" something I should be afraid of? I'm not really up on how to do it with VB.NET. Any chance you could send over a code snippet? Thanks, -Dan Okay, answer to my own question...sort of. My original search was
apparently in the wrong "department" of the msdn site. There is info on late binding for .NET, so I gave it a try. First, it said something about "can't do late binding with option strict." So, I turned option strict off. Then it said something about "can't create ActiveX object 'blah blah.'" Back to the drawing board. -Dan if your not using visual studio then you don't need all that crappy code
behind. put your header code into an ascx file then in your aspx file use load control and a place holder Show quoteHide quote "Daniel Manes" <danth***@cox.net> wrote in message news:1118427722.101024.322300@g49g2000cwa.googlegroups.com... > Okay, here are the facts ma'am (or mister): > > 1. I have a user control called "Header" and a main page called > "ReportMatch". > 2. I've written "code-behinds" for both the user control and the main > page. > 3. This means four files: Ladder.ascx, Ladder.ascx.vb, > ReportMatch.aspx, and ReportMatch.aspx.vb. > 4. None of this stuff is precompiled, and I would prefer not to have to > mess with precompiling and dll's and all that jazz (and I don't have > VS.NET). > 5. I have Option Strict turned on. > 6. I can get the Header to show up in ReportMatch (yay!), but if I try > to declare a variable in the ReportMatch code-behind as type Header, I > get the error "BC30002: Type 'Header' is not defined" (boo!). > > So, my question: > Is there any way to get this error to stop occurring? Please tell me > there is. I'm going crazy here! > > Here are some code snippets (all in VB.NET): > > ********** from Ladder.ascx ********** > <%@ Control Language="VB" Explicit="True" Strict="True" Debug="True" > Src="Ladder.ascx.vb" %> > <table> ... some links ... </table> > > ********** from Ladder.ascx.vb ********** > Option Explicit > Option Strict > Imports System, System.Configuration, System.Data, System.Data.Odbc, > System.Web.UI, System.Web.UI.WebControls > Public Class Header > Inherits UserControl > Public LogInLink As HyperLink > 'A few more declarations like this -- snipped > Sub InitConnectObj > Dim ConnectStr As String > ConnectStr = ConfigurationSettings.AppSettings("ConnectStr") > ConnectObjG.ConnectionString = ConnectStr > End Sub > 'Another method -- snipped > End Class > > ********** from ReportMatch.ascx ********** > <%@ Page Language="VB" Explicit="True" Strict="True" Debug="True" > Src="ReportMatch.aspx.vb" %> > <%@ Register TagPrefix="Ladder" TagName="Header" Src="Ladder.ascx" %> > <html><head> ... </head> > <body><form runat="server"> > <Ladder:Header ID="HeaderCtrl" runat="server" /> > <table> ... some stuff ... </table> > ... some custom validator tags ... > </form></body></html> > > ********** from ReportMatch.ascx.vb ********** > Option Explicit > Option Strict > Imports Microsoft.VisualBasic, System, System.Configuration, > System.Collections, System.Data, System.Data.Odbc, System.Math, > System.Web.UI, System.Web.UI.WebControls > Public Class ReportMatch > Inherits Page > Public HeaderCtrl As Header = CType(LoadControl("Ladder.ascx.vb"), > Header) 'This generates the error "BC30002: Type 'Header' is not > defined"!!! > Public DateCtrl As Calendar > 'A few more declarations like this -- snipped > Sub Page_Load(Sender As Object, E As EventArgs) > HeaderCtrl.InitConnectObj() 'If I try to declare HeaderCtrl As Type > Control or UserControl, this doesn't work because InitConnectObj is not > a method of either of those classes. > 'Some other stuff -- snipped > End Sub > 'Several methods and validation handlers -- snipped > End Class > > I've scoured this newsgroup and Google and tried seemingly everything > (except precompiling into dll's, which I hope I don't have to do), and > I just can't get this thing working. > > Thanks in advance! (or TIA! if you prefer your thank you's in acronym > form) > > -Dan >  
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