how to use a class in an aspx file?

[Jan]

Hi,

I defined a function like this:
Public Function myfunction(ByVa l myvar As Object) As String
...
Return xyz
End Function

in aspx file, i use it like this:

<asp:Literal ID="lit" runat="server" Text='<%# myfunction(Eval ("myfield"))
%>' />
Now i defined a class with the same function like this:

Public Class descr
Public Shared Function myfunction(ByVa l myvar As Object) As String
.....
Return xyz
End Function
End Class
My question is: how to use that class in the aspx file?

Thanks
Jan

[susiedba]

are you talking about clientside?

ASP.net doesn't support clientside script

sorry

On Mar 7, 12:36 pm, "Jan" <cbcbc@xcvxwrot e:

Hi,

I defined a function like this:
Public Function myfunction(ByVa l myvar As Object) As String
...
Return xyz
End Function

in aspx file, i use it like this:

<asp:Literal ID="lit" runat="server" Text='<%# myfunction(Eval ("myfield"))
%>' />

Now i defined a class with the same function like this:

Public Class descr
Public Shared Function myfunction(ByVa l myvar As Object) As String
.....
Return xyz
End Function
End Class

My question is: how to use that class in the aspx file?

Thanks
Jan

[=?ISO-8859-1?Q?G=F6ran_Andersson?=]

Jan wrote:

Hi,

I defined a function like this:
Public Function myfunction(ByVa l myvar As Object) As String
...
Return xyz
End Function

in aspx file, i use it like this:

<asp:Literal ID="lit" runat="server" Text='<%# myfunction(Eval ("myfield"))
%>' />
Now i defined a class with the same function like this:

Public Class descr
Public Shared Function myfunction(ByVa l myvar As Object) As String
.....
Return xyz
End Function
End Class
My question is: how to use that class in the aspx file?

Thanks
Jan

As the method is static (Shared in VB), you access it by specifying the
class name and the method:

<%# descr.myfunctio n(Eval("myfield ")) %>

--
Göran Andersson
_____
http://www.guffa.com

[Cor Ligthert [MVP]]

Jan,

Be aware that you are creating a dangerous module with your code.
A shared class as you made it, is in VB nothing more than a module, which in
this case is static in memory as all modules are. .

An application in ASP.Net belongs to all clients, therefore the module as
you make it can be used as a conainer for constants. Not for data belonging
to one client. For that you need a real class.

Class TheClassIWantTo Use
Public Sub New
'this is the constructor
End Sub
Public function CountTheWhateve r(byval Counter as integer)
return Counter + 1
end sub

To use you say
public sub WhatIWantToDo as TheClassIWantTo Use

You can than use it as.
counter = WhatIWantToDo.C ountTheWhatever (1)

I hope this gives an idea

Cor
"Jan" <cbcbc@xcvxschr eef in bericht
news:OQ******** ******@TK2MSFTN GP05.phx.gbl...

Hi,

I defined a function like this:
Public Function myfunction(ByVa l myvar As Object) As String
...
Return xyz
End Function

in aspx file, i use it like this:

<asp:Literal ID="lit" runat="server" Text='<%# myfunction(Eval ("myfield"))
%>' />
Now i defined a class with the same function like this:

Public Class descr
Public Shared Function myfunction(ByVa l myvar As Object) As String
.....
Return xyz
End Function
End Class
My question is: how to use that class in the aspx file?

Thanks
Jan

[Jan]

Thanks to both

"Cor Ligthert [MVP]" <no************ @planet.nlschre ef in bericht
news:uB******** ******@TK2MSFTN GP03.phx.gbl...

Jan,

Be aware that you are creating a dangerous module with your code.
A shared class as you made it, is in VB nothing more than a module, which
in this case is static in memory as all modules are. .

An application in ASP.Net belongs to all clients, therefore the module as
you make it can be used as a conainer for constants. Not for data
belonging to one client. For that you need a real class.

Class TheClassIWantTo Use
Public Sub New
'this is the constructor
End Sub
Public function CountTheWhateve r(byval Counter as integer)
return Counter + 1
end sub

To use you say
public sub WhatIWantToDo as TheClassIWantTo Use

You can than use it as.
counter = WhatIWantToDo.C ountTheWhatever (1)

I hope this gives an idea

Cor
"Jan" <cbcbc@xcvxschr eef in bericht
news:OQ******** ******@TK2MSFTN GP05.phx.gbl...

>Hi,

I defined a function like this:
Public Function myfunction(ByVa l myvar As Object) As String
...
Return xyz
End Function

in aspx file, i use it like this:

<asp:Literal ID="lit" runat="server" Text='<%#
myfunction(Eva l("myfield")) %>' />
Now i defined a class with the same function like this:

Public Class descr
Public Shared Function myfunction(ByVa l myvar As Object) As String
.....
Return xyz
End Function
End Class
My question is: how to use that class in the aspx file?

Thanks
Jan

[Jan]

Cor or Goran,

After your explanation about the dangereous Shared, i tried the same with a
normal class, but this doesn't work.
So i have the same question: how to use a normal class in an aspx file?

in aspx file, i use a (non-class) function like this:

<asp:Literal ID="lit" runat="server" Text='<%# myfunction(Eval ("myfield"))
%>' />

i tried this: <%# descr.myfunctio n(Eval("myfield ")) %but of course, it
fails ...

my class is now:
---------------
Public Class descr
Public Function myfunction(ByVa l myvar As Object) As String
.....
Return xyz
End Function
End Class


"Cor Ligthert [MVP]" <no************ @planet.nlschre ef in bericht
news:uB******** ******@TK2MSFTN GP03.phx.gbl...

Jan,

Be aware that you are creating a dangerous module with your code.
A shared class as you made it, is in VB nothing more than a module, which
in this case is static in memory as all modules are. .

An application in ASP.Net belongs to all clients, therefore the module as
you make it can be used as a conainer for constants. Not for data
belonging to one client. For that you need a real class.

Class TheClassIWantTo Use
Public Sub New
'this is the constructor
End Sub
Public function CountTheWhateve r(byval Counter as integer)
return Counter + 1
end sub

To use you say
public sub WhatIWantToDo as TheClassIWantTo Use

You can than use it as.
counter = WhatIWantToDo.C ountTheWhatever (1)

I hope this gives an idea

Cor
"Jan" <cbcbc@xcvxschr eef in bericht
news:OQ******** ******@TK2MSFTN GP05.phx.gbl...

>Hi,

I defined a function like this:
Public Function myfunction(ByVa l myvar As Object) As String
...
Return xyz
End Function

in aspx file, i use it like this:

<asp:Literal ID="lit" runat="server" Text='<%#
myfunction(Eva l("myfield")) %>' />
Now i defined a class with the same function like this:

Public Class descr
Public Shared Function myfunction(ByVa l myvar As Object) As String
.....
Return xyz
End Function
End Class
My question is: how to use that class in the aspx file?

Thanks
Jan

[=?ISO-8859-1?Q?G=F6ran_Andersson?=]

There is nothing dangerous with a shared method.

If you would use shared variables in the method, that would be something
different, but that would be dangerus because of the shared variable,
not at all because it's done in a shared method.

There are a lot of shared methods that you use all the time, like
Int32.Parse, DateTime.Now, String.Concat or Math.Round. There is nothing
dangerous about them.

Jan wrote:

Cor or Goran,

After your explanation about the dangereous Shared, i tried the same with a
normal class, but this doesn't work.
So i have the same question: how to use a normal class in an aspx file?

in aspx file, i use a (non-class) function like this:

<asp:Literal ID="lit" runat="server" Text='<%# myfunction(Eval ("myfield"))
%>' />

i tried this: <%# descr.myfunctio n(Eval("myfield ")) %but of course, it
fails ...

my class is now:
---------------
Public Class descr
Public Function myfunction(ByVa l myvar As Object) As String
.....
Return xyz
End Function
End Class


"Cor Ligthert [MVP]" <no************ @planet.nlschre ef in bericht
news:uB******** ******@TK2MSFTN GP03.phx.gbl...

>Jan,

Be aware that you are creating a dangerous module with your code.
A shared class as you made it, is in VB nothing more than a module, which
in this case is static in memory as all modules are. .

An application in ASP.Net belongs to all clients, therefore the module as
you make it can be used as a conainer for constants. Not for data
belonging to one client. For that you need a real class.

Class TheClassIWantTo Use
Public Sub New
'this is the constructor
End Sub
Public function CountTheWhateve r(byval Counter as integer)
return Counter + 1
end sub

To use you say
public sub WhatIWantToDo as TheClassIWantTo Use

You can than use it as.
counter = WhatIWantToDo.C ountTheWhatever (1)

I hope this gives an idea

Cor
"Jan" <cbcbc@xcvxschr eef in bericht
news:OQ******* *******@TK2MSFT NGP05.phx.gbl.. .

>>Hi,

I defined a function like this:
Public Function myfunction(ByVa l myvar As Object) As String
...
Return xyz
End Function

in aspx file, i use it like this:

<asp:Litera l ID="lit" runat="server" Text='<%#
myfunction(Ev al("myfield")) %>' />
Now i defined a class with the same function like this:

Public Class descr
Public Shared Function myfunction(ByVa l myvar As Object) As String
.....
Return xyz
End Function
End Class
My question is: how to use that class in the aspx file?

Thanks
Jan

--
Göran Andersson
_____
http://www.guffa.com

[Cor Ligthert [MVP]]

Goran,

I had not the idea that we were talking about a shared methods. As well not
to a static variable.

We were talking about a shared Class were I especially wrote about module.

If you are used to the behaviour of a Shared Class/Module in a windowsform
situation than a Shared Class/Module is dangerous to use in ASPX.

I know at least one person who was in past writting the same as you and is
now warning every time for that.

Cor

"Göran Andersson" <gu***@guffa.co mschreef in bericht
news:OM******** ******@TK2MSFTN GP02.phx.gbl...

There is nothing dangerous with a shared method.

If you would use shared variables in the method, that would be something
different, but that would be dangerus because of the shared variable, not
at all because it's done in a shared method.

There are a lot of shared methods that you use all the time, like
Int32.Parse, DateTime.Now, String.Concat or Math.Round. There is nothing
dangerous about them.

Jan wrote:

>Cor or Goran,

After your explanation about the dangereous Shared, i tried the same with
a normal class, but this doesn't work.
So i have the same question: how to use a normal class in an aspx file?

in aspx file, i use a (non-class) function like this:

<asp:Literal ID="lit" runat="server" Text='<%#
myfunction(Eva l("myfield")) %>' />

i tried this: <%# descr.myfunctio n(Eval("myfield ")) %but of course, it
fails ...

my class is now:
---------------
Public Class descr
Public Function myfunction(ByVa l myvar As Object) As String
.....
Return xyz
End Function
End Class


"Cor Ligthert [MVP]" <no************ @planet.nlschre ef in bericht
news:uB******* *******@TK2MSFT NGP03.phx.gbl.. .

>>Jan,

Be aware that you are creating a dangerous module with your code.
A shared class as you made it, is in VB nothing more than a module,
which in this case is static in memory as all modules are. .

An application in ASP.Net belongs to all clients, therefore the module
as you make it can be used as a conainer for constants. Not for data
belonging to one client. For that you need a real class.

Class TheClassIWantTo Use
Public Sub New
'this is the constructor
End Sub
Public function CountTheWhateve r(byval Counter as integer)
return Counter + 1
end sub

To use you say
public sub WhatIWantToDo as TheClassIWantTo Use

You can than use it as.
counter = WhatIWantToDo.C ountTheWhatever (1)

I hope this gives an idea

Cor
"Jan" <cbcbc@xcvxschr eef in bericht
news:OQ****** ********@TK2MSF TNGP05.phx.gbl. ..
Hi,

I defined a function like this:
Public Function myfunction(ByVa l myvar As Object) As String
...
Return xyz
End Function

in aspx file, i use it like this:

<asp:Liter al ID="lit" runat="server" Text='<%#
myfunction(E val("myfield")) %>' />
Now i defined a class with the same function like this:

Public Class descr
Public Shared Function myfunction(ByVa l myvar As Object) As
String
.....
Return xyz
End Function
End Class
My question is: how to use that class in the aspx file?

Thanks
Jan

--
Göran Andersson
_____
http://www.guffa.com

[Cor Ligthert [MVP]]

Jan,

At least you have to instance it (construct it), in my message I forgot the
"New" word sorry for that

Your code will than be
dim mydescr as new descr.

Cor

"Jan" <uu*****@fff.ty schreef in bericht
news:%2******** *********@TK2MS FTNGP06.phx.gbl ...

Cor or Goran,

After your explanation about the dangereous Shared, i tried the same with
a normal class, but this doesn't work.
So i have the same question: how to use a normal class in an aspx file?

in aspx file, i use a (non-class) function like this:

<asp:Literal ID="lit" runat="server" Text='<%# myfunction(Eval ("myfield"))
%>' />

i tried this: <%# descr.myfunctio n(Eval("myfield ")) %but of course, it
fails ...

my class is now:
---------------
Public Class descr
Public Function myfunction(ByVa l myvar As Object) As String
.....
Return xyz
End Function
End Class


"Cor Ligthert [MVP]" <no************ @planet.nlschre ef in bericht
news:uB******** ******@TK2MSFTN GP03.phx.gbl...

>Jan,

Be aware that you are creating a dangerous module with your code.
A shared class as you made it, is in VB nothing more than a module, which
in this case is static in memory as all modules are. .

An application in ASP.Net belongs to all clients, therefore the module as
you make it can be used as a conainer for constants. Not for data
belonging to one client. For that you need a real class.

Class TheClassIWantTo Use
Public Sub New
'this is the constructor
End Sub
Public function CountTheWhateve r(byval Counter as integer)
return Counter + 1
end sub

To use you say
public sub WhatIWantToDo as TheClassIWantTo Use

You can than use it as.
counter = WhatIWantToDo.C ountTheWhatever (1)

I hope this gives an idea

Cor
"Jan" <cbcbc@xcvxschr eef in bericht
news:OQ******* *******@TK2MSFT NGP05.phx.gbl.. .

>>Hi,

I defined a function like this:
Public Function myfunction(ByVa l myvar As Object) As String
...
Return xyz
End Function

in aspx file, i use it like this:

<asp:Litera l ID="lit" runat="server" Text='<%#
myfunction(Ev al("myfield")) %>' />
Now i defined a class with the same function like this:

Public Class descr
Public Shared Function myfunction(ByVa l myvar As Object) As
String
.....
Return xyz
End Function
End Class
My question is: how to use that class in the aspx file?

Thanks
Jan

[Jan]

Thanks.
"Cor Ligthert [MVP]" <no************ @planet.nlschre ef in bericht
news:OF******** ******@TK2MSFTN GP06.phx.gbl...

Jan,

At least you have to instance it (construct it), in my message I forgot
the "New" word sorry for that

Your code will than be
dim mydescr as new descr.

Cor

"Jan" <uu*****@fff.ty schreef in bericht
news:%2******** *********@TK2MS FTNGP06.phx.gbl ...

>Cor or Goran,

After your explanation about the dangereous Shared, i tried the same with
a normal class, but this doesn't work.
So i have the same question: how to use a normal class in an aspx file?

in aspx file, i use a (non-class) function like this:

<asp:Literal ID="lit" runat="server" Text='<%#
myfunction(Eva l("myfield")) %>' />

i tried this: <%# descr.myfunctio n(Eval("myfield ")) %but of course, it
fails ...

my class is now:
---------------
Public Class descr
Public Function myfunction(ByVa l myvar As Object) As String
.....
Return xyz
End Function
End Class


"Cor Ligthert [MVP]" <no************ @planet.nlschre ef in bericht
news:uB******* *******@TK2MSFT NGP03.phx.gbl.. .

>>Jan,

Be aware that you are creating a dangerous module with your code.
A shared class as you made it, is in VB nothing more than a module,
which in this case is static in memory as all modules are. .

An application in ASP.Net belongs to all clients, therefore the module
as you make it can be used as a conainer for constants. Not for data
belonging to one client. For that you need a real class.

Class TheClassIWantTo Use
Public Sub New
'this is the constructor
End Sub
Public function CountTheWhateve r(byval Counter as integer)
return Counter + 1
end sub

To use you say
public sub WhatIWantToDo as TheClassIWantTo Use

You can than use it as.
counter = WhatIWantToDo.C ountTheWhatever (1)

I hope this gives an idea

Cor
"Jan" <cbcbc@xcvxschr eef in bericht
news:OQ****** ********@TK2MSF TNGP05.phx.gbl. ..
Hi,

I defined a function like this:
Public Function myfunction(ByVa l myvar As Object) As String
...
Return xyz
End Function

in aspx file, i use it like this:

<asp:Liter al ID="lit" runat="server" Text='<%#
myfunction(E val("myfield")) %>' />
Now i defined a class with the same function like this:

Public Class descr
Public Shared Function myfunction(ByVa l myvar As Object) As
String
.....
Return xyz
End Function
End Class
My question is: how to use that class in the aspx file?

Thanks
Jan