|
P: n/a
|
Hello,
I want to create a global class. To do this I did the followings:
1- Create a class name test. It has a public variable named mystring.
public class test
{
public string mystring = "hello world";
}
2- Create a global.asax and its coresponding global.asax.cs ( i did it using
VC2005)
3 - in global class generated by VC2005, I introduced test class as follow:
public class Global : System.Web.HttpApplication
{
public test myclass;
protected void Application_Start(object sender, EventArgs e)
{
}
protected void Application_End(object sender, EventArgs e)
{
}
}
now I want to use it in an event in a mater page.
I did this:
public partial class Site1 : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(Application.myclass.mystring);
}
}
but I am getting this error:
Error 1 'System.Web.HttpApplicationState' does not contain a definition for
'myclass'
I do this:
public partial class Site1 : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(Global.myclass.mystring);
}
}
Error 1 An object reference is required for the nonstatic field, method, or
property 'Global.myclass'
What is wrong wioth my code?
Regards
| |
Share this Question
|
P: n/a
|
You need to declare the string as
public static string mystring = "Hello World";
I would recommend making it a property
public static mystring {
get { return "Hello World"; }
}
john
nice clean examples at www.nicecleanexamples.com
"ma" <ma@nowhere.comwrote in message
news:uz**************@TK2MSFTNGP06.phx.gbl...
Hello,
I want to create a global class. To do this I did the followings:
1- Create a class name test. It has a public variable named mystring.
public class test
{
public string mystring = "hello world";
}
2- Create a global.asax and its coresponding global.asax.cs ( i did it
using VC2005)
3 - in global class generated by VC2005, I introduced test class as
follow:
public class Global : System.Web.HttpApplication
{
public test myclass;
protected void Application_Start(object sender, EventArgs e)
{
}
protected void Application_End(object sender, EventArgs e)
{
}
}
now I want to use it in an event in a mater page.
I did this:
public partial class Site1 : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(Application.myclass.mystring);
}
}
but I am getting this error:
Error 1 'System.Web.HttpApplicationState' does not contain a definition
for 'myclass'
I do this:
public partial class Site1 : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(Global.myclass.mystring);
}
}
Error 1 An object reference is required for the nonstatic field, method,
or property 'Global.myclass'
What is wrong wioth my code?
Regards
| |
|
P: n/a
|
Thanks, but I don 't want that my variable be static. It is an example but
in realworld I want a variable which is not static. What should I do?
Regards
"John Mott" <jo********@hotmail.comwrote in message
news:el**************@TK2MSFTNGP03.phx.gbl...
You need to declare the string as
public static string mystring = "Hello World";
I would recommend making it a property
public static mystring {
get { return "Hello World"; }
}
john
nice clean examples at www.nicecleanexamples.com
"ma" <ma@nowhere.comwrote in message
news:uz**************@TK2MSFTNGP06.phx.gbl...
>Hello,
I want to create a global class. To do this I did the followings:
1- Create a class name test. It has a public variable named mystring.
public class test
{
public string mystring = "hello world";
}
2- Create a global.asax and its coresponding global.asax.cs ( i did it
using VC2005)
3 - in global class generated by VC2005, I introduced test class as
follow:
public class Global : System.Web.HttpApplication
{
public test myclass;
protected void Application_Start(object sender, EventArgs e)
{
}
protected void Application_End(object sender, EventArgs e)
{
}
}
now I want to use it in an event in a mater page.
I did this:
public partial class Site1 : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(Application.myclass.mystring);
}
}
but I am getting this error:
Error 1 'System.Web.HttpApplicationState' does not contain a definition
for 'myclass'
I do this:
public partial class Site1 : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(Global.myclass.mystring);
}
}
Error 1 An object reference is required for the nonstatic field, method,
or property 'Global.myclass'
What is wrong wioth my code?
Regards
| |
|
P: n/a
|
If you're trying to create global variables you sorta do want them static.
You can have something thats modifiable, not just a constant.
static string _mystring = "";
public static string mystring {
get { return _mystring; }
set { _mystring = value;}
}
The other option is to create an instance of the global class
public class Global {
public string mystring = "a default value";
};
public Global GlobalInstance = new Global();
and then you can say
GlobalInstance.mystring = "a new value";
John
nice clean examples at www.nicecleanexamples.com
"ma" <ma@nowhere.comwrote in message
news:OF**************@TK2MSFTNGP04.phx.gbl...
Thanks, but I don 't want that my variable be static. It is an example but
in realworld I want a variable which is not static. What should I do?
Regards
"John Mott" <jo********@hotmail.comwrote in message
news:el**************@TK2MSFTNGP03.phx.gbl...
>You need to declare the string as
public static string mystring = "Hello World";
I would recommend making it a property
public static mystring {
get { return "Hello World"; }
}
john
nice clean examples at www.nicecleanexamples.com
"ma" <ma@nowhere.comwrote in message
news:uz**************@TK2MSFTNGP06.phx.gbl...
>>Hello,
I want to create a global class. To do this I did the followings:
1- Create a class name test. It has a public variable named mystring.
public class test
{
public string mystring = "hello world";
}
2- Create a global.asax and its coresponding global.asax.cs ( i did it
using VC2005)
3 - in global class generated by VC2005, I introduced test class as
follow:
public class Global : System.Web.HttpApplication
{
public test myclass;
protected void Application_Start(object sender, EventArgs e)
{
}
protected void Application_End(object sender, EventArgs e)
{
}
}
now I want to use it in an event in a mater page.
I did this:
public partial class Site1 : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(Application.myclass.mystring);
}
}
but I am getting this error:
Error 1 'System.Web.HttpApplicationState' does not contain a definition
for 'myclass'
I do this:
public partial class Site1 : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(Global.myclass.mystring);
}
}
Error 1 An object reference is required for the nonstatic field, method,
or property 'Global.myclass'
What is wrong wioth my code?
Regards
| |
|
P: n/a
|
Thanks John, But it doesn't work!
I did this in the page load event:
protected void Page_Load(object sender, EventArgs e)
{
Global GlobalInstance=new Global();
Response.Write(GlobalInstance.myclass.mystring);
GlobalInstance.myclass.mystring = "new string";
}
so the first time that I load this page, it should show "Hello World" and
the next time that I download the page ( or refresh it) it should show "new
string" but it always show "hello world"
Any suggestion?
Regards
"John Mott" <jo********@hotmail.comwrote in message
news:%2****************@TK2MSFTNGP06.phx.gbl...
If you're trying to create global variables you sorta do want them static.
You can have something thats modifiable, not just a constant.
static string _mystring = "";
public static string mystring {
get { return _mystring; }
set { _mystring = value;}
}
The other option is to create an instance of the global class
public class Global {
public string mystring = "a default value";
};
public Global GlobalInstance = new Global();
and then you can say
GlobalInstance.mystring = "a new value";
John
nice clean examples at www.nicecleanexamples.com
"ma" <ma@nowhere.comwrote in message
news:OF**************@TK2MSFTNGP04.phx.gbl...
>Thanks, but I don 't want that my variable be static. It is an example
but in realworld I want a variable which is not static. What should I do?
Regards
"John Mott" <jo********@hotmail.comwrote in message
news:el**************@TK2MSFTNGP03.phx.gbl...
>>You need to declare the string as
public static string mystring = "Hello World";
I would recommend making it a property
public static mystring {
get { return "Hello World"; }
}
john
nice clean examples at www.nicecleanexamples.com
"ma" <ma@nowhere.comwrote in message
news:uz**************@TK2MSFTNGP06.phx.gbl...
Hello,
I want to create a global class. To do this I did the followings:
1- Create a class name test. It has a public variable named mystring.
public class test
{
public string mystring = "hello world";
}
2- Create a global.asax and its coresponding global.asax.cs ( i did it
using VC2005)
3 - in global class generated by VC2005, I introduced test class as
follow:
public class Global : System.Web.HttpApplication
{
public test myclass;
protected void Application_Start(object sender, EventArgs e)
{
}
protected void Application_End(object sender, EventArgs e)
{
}
}
now I want to use it in an event in a mater page.
I did this:
public partial class Site1 : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(Application.myclass.mystring);
}
}
but I am getting this error:
Error 1 'System.Web.HttpApplicationState' does not contain a definition
for 'myclass'
I do this:
public partial class Site1 : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(Global.myclass.mystring);
}
}
Error 1 An object reference is required for the nonstatic field,
method, or property 'Global.myclass'
What is wrong wioth my code?
Regards
| |
|
P: n/a
|
"ma" <ma@nowhere.comwrote in message
news:Oo**************@TK2MSFTNGP06.phx.gbl...
Thanks John, But it doesn't work!
I did this in the page load event:
protected void Page_Load(object sender, EventArgs e)
{
Global GlobalInstance=new Global();
Response.Write(GlobalInstance.myclass.mystring);
GlobalInstance.myclass.mystring = "new string";
}
so the first time that I load this page, it should show "Hello World" and
the next time that I download the page ( or refresh it) it should show
"new string" but it always show "hello world"
Any suggestion?
Regards
Make the Global class itself static, like this
public static class Global {
public static string myString = "default";
}
Then you should be able to just refer to it without creating it with
Global.myString = "set me";
john
nice clean examples at www.nicecleanexamples.com | |
|
P: n/a
|
Thanks.
Is there any other way to instantiate an object with application scope?
Regards
"John Mott" <jo********@hotmail.comwrote in message
news:Ok**************@TK2MSFTNGP03.phx.gbl...
>
"ma" <ma@nowhere.comwrote in message
news:Oo**************@TK2MSFTNGP06.phx.gbl...
>Thanks John, But it doesn't work!
I did this in the page load event:
protected void Page_Load(object sender, EventArgs e)
{
Global GlobalInstance=new Global();
Response.Write(GlobalInstance.myclass.mystring) ;
GlobalInstance.myclass.mystring = "new string";
}
so the first time that I load this page, it should show "Hello World" and
the next time that I download the page ( or refresh it) it should show
"new string" but it always show "hello world"
Any suggestion?
Regards
Make the Global class itself static, like this
public static class Global {
public static string myString = "default";
}
Then you should be able to just refer to it without creating it with
Global.myString = "set me";
john
nice clean examples at www.nicecleanexamples.com
| |
|
P: n/a
|
You can create a static member of the Application class (a static member can
be an object that can be modified, it doesn't have to be read-only). That
was my first idea but you didn't want a static variable. You may have
thought from that context that static meant 'readonly', it doesn't.
Does that help?
here's a link as well: http://support.microsoft.com/default...;en-us;Q312607
john
"ma" <ma@nowhere.comwrote in message
news:%2****************@TK2MSFTNGP04.phx.gbl...
Thanks.
Is there any other way to instantiate an object with application scope?
Regards
"John Mott" <jo********@hotmail.comwrote in message
news:Ok**************@TK2MSFTNGP03.phx.gbl...
>>
"ma" <ma@nowhere.comwrote in message
news:Oo**************@TK2MSFTNGP06.phx.gbl...
>>Thanks John, But it doesn't work!
I did this in the page load event:
protected void Page_Load(object sender, EventArgs e)
{
Global GlobalInstance=new Global();
Response.Write(GlobalInstance.myclass.mystring );
GlobalInstance.myclass.mystring = "new string";
}
so the first time that I load this page, it should show "Hello World"
and the next time that I download the page ( or refresh it) it should
show "new string" but it always show "hello world"
Any suggestion?
Regards
Make the Global class itself static, like this
public static class Global {
public static string myString = "default";
}
Then you should be able to just refer to it without creating it with
Global.myString = "set me";
john
nice clean examples at www.nicecleanexamples.com
| |
|
P: n/a
|
Hi there,
Usually, when the class cannot be static and you require one global instance
of a class, singleton pattern should be used (this is thread safe variant):
public class Global
{
private Global()
{
}
private static object sync = new object();
private static Global instance = null;
public Global Instance
{
get
{
lock(sync)
{
if (instance == null)
{
instance = new Global();
}
}
return instance;
}
}
}
// usage
Global global = Global.Instance;
In addition, in ASP.NET there's build-in mechanism for such scenarios called
Application state (instance can be initialized in the Global.asax
Application_Start event) or Caching (you'd have to make sure race condition
is eliminated).
HTH
--
Milosz
"ma" wrote:
Thanks.
Is there any other way to instantiate an object with application scope?
Regards
"John Mott" <jo********@hotmail.comwrote in message
news:Ok**************@TK2MSFTNGP03.phx.gbl...
"ma" <ma@nowhere.comwrote in message
news:Oo**************@TK2MSFTNGP06.phx.gbl...
Thanks John, But it doesn't work!
I did this in the page load event:
protected void Page_Load(object sender, EventArgs e)
{
Global GlobalInstance=new Global();
Response.Write(GlobalInstance.myclass.mystring);
GlobalInstance.myclass.mystring = "new string";
}
so the first time that I load this page, it should show "Hello World" and
the next time that I download the page ( or refresh it) it should show
"new string" but it always show "hello world"
Any suggestion?
Regards
Make the Global class itself static, like this
public static class Global {
public static string myString = "default";
}
Then you should be able to just refer to it without creating it with
Global.myString = "set me";
john
nice clean examples at www.nicecleanexamples.com
| |
|
P: n/a
|
Thanks,
Where can I read more about application instance or caching? Any good
tutorial on the web?
Regards
"Milosz Skalecki [MCAD]" <mi*****@DONTLIKESPAMwp.plwrote in message
news:00**********************************@microsof t.com...
Hi there,
Usually, when the class cannot be static and you require one global
instance
of a class, singleton pattern should be used (this is thread safe
variant):
public class Global
{
private Global()
{
}
private static object sync = new object();
private static Global instance = null;
public Global Instance
{
get
{
lock(sync)
{
if (instance == null)
{
instance = new Global();
}
}
return instance;
}
}
}
// usage
Global global = Global.Instance;
In addition, in ASP.NET there's build-in mechanism for such scenarios
called
Application state (instance can be initialized in the Global.asax
Application_Start event) or Caching (you'd have to make sure race
condition
is eliminated).
HTH
--
Milosz
"ma" wrote:
>Thanks.
Is there any other way to instantiate an object with application scope?
Regards
"John Mott" <jo********@hotmail.comwrote in message
news:Ok**************@TK2MSFTNGP03.phx.gbl...
>
"ma" <ma@nowhere.comwrote in message
news:Oo**************@TK2MSFTNGP06.phx.gbl...
Thanks John, But it doesn't work!
I did this in the page load event:
protected void Page_Load(object sender, EventArgs e)
{
Global GlobalInstance=new Global();
Response.Write(GlobalInstance.myclass.mystring) ;
GlobalInstance.myclass.mystring = "new string";
}
so the first time that I load this page, it should show "Hello World"
and
the next time that I download the page ( or refresh it) it should show
"new string" but it always show "hello world"
Any suggestion?
Regards
Make the Global class itself static, like this
public static class Global {
public static string myString = "default";
}
Then you should be able to just refer to it without creating it with
Global.myString = "set me";
john
nice clean examples at www.nicecleanexamples.com
| |
|
P: n/a
|
Hi,
There are many tutorials out there, ie: http://samples.gotdotnet.com/quickst...eoverview.aspx
Google is your friend
Regards
--
Milosz
"ma" wrote:
Thanks,
Where can I read more about application instance or caching? Any good
tutorial on the web?
Regards
"Milosz Skalecki [MCAD]" <mi*****@DONTLIKESPAMwp.plwrote in message
news:00**********************************@microsof t.com...
Hi there,
Usually, when the class cannot be static and you require one global
instance
of a class, singleton pattern should be used (this is thread safe
variant):
public class Global
{
private Global()
{
}
private static object sync = new object();
private static Global instance = null;
public Global Instance
{
get
{
lock(sync)
{
if (instance == null)
{
instance = new Global();
}
}
return instance;
}
}
}
// usage
Global global = Global.Instance;
In addition, in ASP.NET there's build-in mechanism for such scenarios
called
Application state (instance can be initialized in the Global.asax
Application_Start event) or Caching (you'd have to make sure race
condition
is eliminated).
HTH
--
Milosz
"ma" wrote:
Thanks.
Is there any other way to instantiate an object with application scope?
Regards
"John Mott" <jo********@hotmail.comwrote in message
news:Ok**************@TK2MSFTNGP03.phx.gbl...
"ma" <ma@nowhere.comwrote in message
news:Oo**************@TK2MSFTNGP06.phx.gbl...
Thanks John, But it doesn't work!
I did this in the page load event:
protected void Page_Load(object sender, EventArgs e)
{
Global GlobalInstance=new Global();
Response.Write(GlobalInstance.myclass.mystring);
GlobalInstance.myclass.mystring = "new string";
}
so the first time that I load this page, it should show "Hello World"
and
the next time that I download the page ( or refresh it) it should show
"new string" but it always show "hello world"
Any suggestion?
Regards
Make the Global class itself static, like this
public static class Global {
public static string myString = "default";
}
Then you should be able to just refer to it without creating it with
Global.myString = "set me";
john
nice clean examples at www.nicecleanexamples.com
| | This discussion thread is closed Replies have been disabled for this discussion. | |  Question stats - viewed: 3191
- replies: 10
- date asked: Aug 11 '07
|
