How can i have multiple base classes.

[iKiLL]

hi all,

I would like to be able to create an umbrella class for all my main global
sections but I would still like to keep them all in separate file something
like the below but I keep getting an error saying you are not allowed
Multiple base classes.
/// <summary>

/// This is the umbrella Object for loading all the Global classes at once.

/// It should only ever be used for this task.

/// </summary>

public class myGlobal : GlobalVariables , Settings , ErrorHandler ,StopWatch

{
}

Does any one know a way of doing this.

Thanks

ink

[Willy Denoyette [MVP]]

"iKiLL" <iK***@NotMyEma il.comwrote in message
news:%2******** ********@TK2MSF TNGP02.phx.gbl. ..

hi all,

I would like to be able to create an umbrella class for all my main global sections but I
would still like to keep them all in separate file something like the below but I keep
getting an error saying you are not allowed Multiple base classes.
/// <summary>

/// This is the umbrella Object for loading all the Global classes at once.

/// It should only ever be used for this task.

/// </summary>

public class myGlobal : GlobalVariables , Settings , ErrorHandler ,StopWatch

{
}

Does any one know a way of doing this.

Thanks

ink

..NET does not support Multiple Inheritance, so the answer is you can't derive from multiple
base classes.

Willy.

[Ebbe Kristensen]

iKiLL wrote:

public class myGlobal : GlobalVariables , Settings , ErrorHandler
,StopWatch
{
}

..NET/C# does not support multiple inheritance. Anders Hejlsberg doesn't like
it :-)

Does any one know a way of doing this.

You should use "using" directives for the classes, you want to reference.

Ebbe

[iKiLL]

Thanks for your comments both of you,

Ebbe what do you mean by ("using" directives for the classes) is this a
simple work around.
i have found a complicated work around using Interfaces.

Thnaks,
ink


"Ebbe Kristensen" <eb**@ekologic. dkwrote in message
news:eL******** ******@TK2MSFTN GP05.phx.gbl...

iKiLL wrote:

>public class myGlobal : GlobalVariables , Settings , ErrorHandler
,StopWatch
{
}

.NET/C# does not support multiple inheritance. Anders Hejlsberg doesn't
like it :-)

>Does any one know a way of doing this.

You should use "using" directives for the classes, you want to reference.

Ebbe

[Peter K]

"iKiLL" <iK***@NotMyEma il.comwrote in
news:#q******** ******@TK2MSFTN GP02.phx.gbl:

I would like to be able to create an umbrella class for all my main
global sections but I would still like to keep them all in separate
file something like the below but I keep getting an error saying you
are not allowed Multiple base classes.

/// <summary>

/// This is the umbrella Object for loading all the Global classes at
once.

/// It should only ever be used for this task.

/// </summary>

public class myGlobal : GlobalVariables , Settings , ErrorHandler
,StopWatch

{
}
Does any one know a way of doing this.

Can you have instance variables for your "global" classes in your
"umbrella" class?

Eg.
public class MyGlobal
{
private GlobalVariables globalVariables ;
private Settings settings;
private ErrorHandler errorHandler;
...
}

And of course you set the instances as appropriate, and expose them as
appropriate...

/Peter

[Ebbe Kristensen]

iKiLL wrote:

Ebbe what do you mean by ("using" directives for the classes) is this
a simple work around.
i have found a complicated work around using Interfaces.

I am tempted to ask why you are asking that question? Surely you do know
what the "#using" directive does, don't you?

For example, if you insist on using global variables (you shouldn't but
that's another discussion), you collect them in a class in a .cs file and
get access to them in other files through a "#using" directive.

Ebbe

[Jon Skeet [C# MVP]]

iKiLL <iK***@NotMyEma il.comwrote:

I would like to be able to create an umbrella class for all my main global
sections but I would still like to keep them all in separate file something
like the below but I keep getting an error saying you are not allowed
Multiple base classes.

Indeed you're not. However, I would question your design anyway. Does
your class really represent something which *is* a StopWatch and *is* a
Settings, and *is* an ErrorHandler? Or does it just *have* or use those
things? It sounds to me much more likely that composition is more
appropriate than inheritance here. (I would also worry about any class
called GlobalVariables , btw.)

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

[iKiLL]

hi all,

i am have been developing in VB6 for over 6 years.

I am having a hard time coming to grips with the development environment of
OOP.

The hole concept of not being able to access stuff that i need when i need
it with out loading up a entire class is really bugging me.

So fare in fact it is the most annoying part of this whole learning curve.

i am just trying to make development less time consuming with out effecting
the over program.

i really am open to suggestions but so fare all i have had from anyone is
[Why don't you just create the class when you need it.]

Below are a few things that i would like in my Global variables

public static string APPPATH =
System.IO.Path. GetDirectoryNam e(System.Reflec tion.Assembly.G etExecutingAsse mbly().GetName( ).CodeBase);

public string APP_PATH = APPPATH;

public string LOCAL_DB_PATH = APPPATH + @"\DB\";

public string ERROR_LOG_PATH = APPPATH + @"\Log\";

public string DIALOG_TITLE = "Mitie Cleaning";

public Boolean LOG_ERROR = false;

Now this means that ever time i want to access one of my paths i have to
Write the code to create the class before i can us my Variable and it is the
same with everything else.

if someone has a better suggestion then [just do it the long way like
everyone else] i would love to hear it.

thanks

ink


"Jon Skeet [C# MVP]" <sk***@pobox.co mwrote in message
news:MP******** *************** *@msnews.micros oft.com...

iKiLL <iK***@NotMyEma il.comwrote:

>I would like to be able to create an umbrella class for all my main
global
sections but I would still like to keep them all in separate file
something
like the below but I keep getting an error saying you are not allowed
Multiple base classes.

Indeed you're not. However, I would question your design anyway. Does
your class really represent something which *is* a StopWatch and *is* a
Settings, and *is* an ErrorHandler? Or does it just *have* or use those
things? It sounds to me much more likely that composition is more
appropriate than inheritance here. (I would also worry about any class
called GlobalVariables , btw.)

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

[=?Utf-8?B?SGFucw==?=]

You might want to try

public class MySettings
{
private static MySettings m_MySettings = null;
private string m_Path;

private static MySettings GetInstance()
{
if(m_MySettings = null)
{
m_MySettings = new MySettings();
m_MySettings.m_ Path =
System.IO.Path. GetDirectoryNam eSystem.Reflect ion.Assembly.Ge tExecutingAssem bly().GetName() .CodeBase);
}
return m_MySettings;
}

public static string GetLocalDbPath( )
{
MySettings mySettings = MySettings.GetI nstance();
return m_MySettings.m_ Path + @"\DB\";
}

public static string GetErrorLogPath ()
{
MySettings mySettings = MySettings.GetI nstance();
return m_MySettings.m_ Path + @"\Log\";
}
}

in your source code you can use

string errorFile = MySettings.GetE rrorLogPath() + "error.log" ;

The contents of MySettings apply to your entire application. Does this
answer your question?

Hans.
"iKiLL" wrote:

>

hi all,

i am have been developing in VB6 for over 6 years.

I am having a hard time coming to grips with the development environment of
OOP.

The hole concept of not being able to access stuff that i need when i need
it with out loading up a entire class is really bugging me.

So fare in fact it is the most annoying part of this whole learning curve.

i am just trying to make development less time consuming with out effecting
the over program.

i really am open to suggestions but so fare all i have had from anyone is
[Why don't you just create the class when you need it.]

Below are a few things that i would like in my Global variables

public static string APPPATH =
System.IO.Path. GetDirectoryNam e(System.Reflec tion.Assembly.G etExecutingAsse mbly().GetName( ).CodeBase);

public string APP_PATH = APPPATH;

public string LOCAL_DB_PATH = APPPATH + @"\DB\";

public string ERROR_LOG_PATH = APPPATH + @"\Log\";

public string DIALOG_TITLE = "Mitie Cleaning";

public Boolean LOG_ERROR = false;

Now this means that ever time i want to access one of my paths i have to
Write the code to create the class before i can us my Variable and it is the
same with everything else.

if someone has a better suggestion then [just do it the long way like
everyone else] i would love to hear it.

thanks

ink


"Jon Skeet [C# MVP]" <sk***@pobox.co mwrote in message
news:MP******** *************** *@msnews.micros oft.com...

iKiLL <iK***@NotMyEma il.comwrote:

I would like to be able to create an umbrella class for all my main
global
sections but I would still like to keep them all in separate file
something
like the below but I keep getting an error saying you are not allowed
Multiple base classes.

Indeed you're not. However, I would question your design anyway. Does
your class really represent something which *is* a StopWatch and *is* a
Settings, and *is* an ErrorHandler? Or does it just *have* or use those
things? It sounds to me much more likely that composition is more
appropriate than inheritance here. (I would also worry about any class
called GlobalVariables , btw.)

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

[iKiLL]

Thanks Hans,

This looks like exactly what i am after.

But i am sorry i am not sure i understand how it is working.

Is this a Singleton Design Pattern. i recognize the GetInstance() from
something i was reading earlier.

How is it that this is working with out having to write all the create
object code, And at what point is this loaded into memory and destroyed from
memory?

Thanks
ink

"Hans" <Ha**@discussio ns.microsoft.co mwrote in message
news:B2******** *************** ***********@mic rosoft.com...

You might want to try

public class MySettings
{
private static MySettings m_MySettings = null;
private string m_Path;

private static MySettings GetInstance()
{
if(m_MySettings = null)
{
m_MySettings = new MySettings();
m_MySettings.m_ Path =
System.IO.Path. GetDirectoryNam eSystem.Reflect ion.Assembly.Ge tExecutingAssem bly().GetName() .CodeBase);
}
return m_MySettings;
}

public static string GetLocalDbPath( )
{
MySettings mySettings = MySettings.GetI nstance();
return m_MySettings.m_ Path + @"\DB\";
}

public static string GetErrorLogPath ()
{
MySettings mySettings = MySettings.GetI nstance();
return m_MySettings.m_ Path + @"\Log\";
}
}

in your source code you can use

string errorFile = MySettings.GetE rrorLogPath() + "error.log" ;

The contents of MySettings apply to your entire application. Does this
answer your question?

Hans.
"iKiLL" wrote:

>>

hi all,

i am have been developing in VB6 for over 6 years.

I am having a hard time coming to grips with the development environment
of
OOP.

The hole concept of not being able to access stuff that i need when i
need
it with out loading up a entire class is really bugging me.

So fare in fact it is the most annoying part of this whole learning
curve.

i am just trying to make development less time consuming with out
effecting
the over program.

i really am open to suggestions but so fare all i have had from anyone is
[Why don't you just create the class when you need it.]

Below are a few things that i would like in my Global variables

public static string APPPATH =
System.IO.Path .GetDirectoryNa me(System.Refle ction.Assembly. GetExecutingAss embly().GetName ().CodeBase);

public string APP_PATH = APPPATH;

public string LOCAL_DB_PATH = APPPATH + @"\DB\";

public string ERROR_LOG_PATH = APPPATH + @"\Log\";

public string DIALOG_TITLE = "Mitie Cleaning";

public Boolean LOG_ERROR = false;

Now this means that ever time i want to access one of my paths i have to
Write the code to create the class before i can us my Variable and it is
the
same with everything else.

if someone has a better suggestion then [just do it the long way like
everyone else] i would love to hear it.

thanks

ink


"Jon Skeet [C# MVP]" <sk***@pobox.co mwrote in message
news:MP******* *************** **@msnews.micro soft.com...

iKiLL <iK***@NotMyEma il.comwrote:
I would like to be able to create an umbrella class for all my main
global
sections but I would still like to keep them all in separate file
something
like the below but I keep getting an error saying you are not allowed
Multiple base classes.

Indeed you're not. However, I would question your design anyway. Does
your class really represent something which *is* a StopWatch and *is* a
Settings, and *is* an ErrorHandler? Or does it just *have* or use those
things? It sounds to me much more likely that composition is more
appropriate than inheritance here. (I would also worry about any class
called GlobalVariables , btw.)

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too