Hi,

when uing session("myvar"), or viewstate("myvar") or cache("myvar), are the 
values always strings?
I mean:

dim dt as date
viewstate("test")=dt
.....
dt=vieswtate("test")

Does here occur a conversion first from date to string, then from string to 
date or the value remains always a date?


Thanks
Britt

You have to cast the object.


Employee e = new Employee();

viewstate("test")=e;


Employee anotherEmp = ViewState["test"] as Employee;

also, you may have to set the [Serializable] attribute for ViewState, and 
non In Proc Session usage.





"Britt"  wrote in message 
news:unxgeV04HHA.1212@TK2MSFTNGP05.phx.gbl...

> Hi,
>
> when uing session("myvar"), or viewstate("myvar") or cache("myvar), are 
> the values always strings?
> I mean:
>
> dim dt as date
> viewstate("test")=dt
> ....
> dt=vieswtate("test")
>
> Does here occur a conversion first from date to string, then from string 
> to date or the value remains always a date?
>
>
> Thanks
> Britt
> 

The values are of type "Object", so you can store just about anything in 
there. In your code, it's storing a Date object in ViewState since 
that's what you added in there.


Steve C.
MCAD,MCSE,MCP+I,CNE,CNA,CCNA


Britt wrote:

> Hi,
> 
> when uing session("myvar"), or viewstate("myvar") or cache("myvar), are the 
> values always strings?
> I mean:
> 
> dim dt as date
> viewstate("test")=dt
> .....
> dt=vieswtate("test")
> 
> Does here occur a conversion first from date to string, then from string to 
> date or the value remains always a date?
> 
> 
> Thanks
> Britt 
> 
> 

> are the  values always strings?


No, you can store anything in the session.


> Does here occur a conversion first from date to string, then from string 
> to date or the value remains always a date?


Not 100% on casting in VB, but there should be no conversion from string to 
date.

If you'd turn on

Option Explicit ON
Option Strict ON

You'd see this much earlier (that its an object).  And that you'd have to 
use some casting or convert function.


Convert.ToString ( ViewState("test") )

OR

ctype ( Employee , ViewState ("employeekey")



"Britt"  wrote in message 
news:unxgeV04HHA.1212@TK2MSFTNGP05.phx.gbl...

> Hi,
>
> when uing session("myvar"), or viewstate("myvar") or cache("myvar), are 
> the values always strings?
> I mean:
>
> dim dt as date
> viewstate("test")=dt
> ....
> dt=vieswtate("test")
>
> Does here occur a conversion first from date to string, then from string 
> to date or the value remains always a date?
>
>
> Thanks
> Britt
> 

Thanks to all

"sloan"  schreef in bericht 
news:%23tMyjp04HHA.4436@TK2MSFTNGP03.phx.gbl...

>
> If you'd turn on
>
> Option Explicit ON
> Option Strict ON
>
> You'd see this much earlier (that its an object).  And that you'd have to 
> use some casting or convert function.
>
>
> Convert.ToString ( ViewState("test") )
>
> OR
>
> ctype ( Employee , ViewState ("employeekey")
>
>
>
> "Britt"  wrote in message 
> news:unxgeV04HHA.1212@TK2MSFTNGP05.phx.gbl...
>> Hi,
>>
>> when uing session("myvar"), or viewstate("myvar") or cache("myvar), are 
>> the values always strings?
>> I mean:
>>
>> dim dt as date
>> viewstate("test")=dt
>> ....
>> dt=vieswtate("test")
>>
>> Does here occur a conversion first from date to string, then from string 
>> to date or the value remains always a date?
>>
>>
>> Thanks
>> Britt
>>
>
> 

Amen bro.
-- 
Recursion: see Recursion
site:  http://www.eggheadcafe.com
unBlog:  http://petesbloggerama.blogspot.com
BlogMetaFinder:    http://www.blogmetafinder.com



"sloan" wrote:


> 
> If you'd turn on
> 
> Option Explicit ON
> Option Strict ON
> 
> You'd see this much earlier (that its an object).  And that you'd have to 
> use some casting or convert function.
> 
> 
> Convert.ToString ( ViewState("test") )
> 
> OR
> 
> ctype ( Employee , ViewState ("employeekey")
> 
> 
> 
> "Britt"  wrote in message 
> news:unxgeV04HHA.1212@TK2MSFTNGP05.phx.gbl...
> > Hi,
> >
> > when uing session("myvar"), or viewstate("myvar") or cache("myvar), are 
> > the values always strings?
> > I mean:
> >
> > dim dt as date
> > viewstate("test")=dt
> > ....
> > dt=vieswtate("test")
> >
> > Does here occur a conversion first from date to string, then from string 
> > to date or the value remains always a date?
> >
> >
> > Thanks
> > Britt
> > 
> 
> 
> 

What is functionality of viewstate collection?

"Steve" wrote:


> The values are of type "Object", so you can store just about anything in 
> there. In your code, it's storing a Date object in ViewState since 
> that's what you added in there.
> 
> 
> Steve C.
> MCAD,MCSE,MCP+I,CNE,CNA,CCNA
> 
> 
> Britt wrote:
> > Hi,
> > 
> > when uing session("myvar"), or viewstate("myvar") or cache("myvar), are the 
> > values always strings?
> > I mean:
> > 
> > dim dt as date
> > viewstate("test")=dt
> > .....
> > dt=vieswtate("test")
> > 
> > Does here occur a conversion first from date to string, then from string to 
> > date or the value remains always a date?
> > 
> > 
> > Thanks
> > Britt 
> > 
> > 
> 

That's a client-side caching mechanism, whereas SessionState is server 
side. ViewState is actually embedded in the HTML page (near the top), 
and is sent back and forth between the server and client. This is how it 
works. Other than that, they serve the same purpose. For "light" 
caching, ViewState works great, and there's virtually NO performance hit 
on the server. You just can't really store a LOT of data here because of 
how large the HTML page gets.


Steve C.
MCAD,MCSE,MCP+I,CNE,CNA,CCNA


Aleks Kleyn wrote:

> What is functionality of viewstate collection?
> 
> "Steve" wrote:
> 
>> The values are of type "Object", so you can store just about anything in 
>> there. In your code, it's storing a Date object in ViewState since 
>> that's what you added in there.
>>
>>
>> Steve C.
>> MCAD,MCSE,MCP+I,CNE,CNA,CCNA
>>
>>
>> Britt wrote:
>>> Hi,
>>>
>>> when uing session("myvar"), or viewstate("myvar") or cache("myvar), are the 
>>> values always strings?
>>> I mean:
>>>
>>> dim dt as date
>>> viewstate("test")=dt
>>> .....
>>> dt=vieswtate("test")
>>>
>>> Does here occur a conversion first from date to string, then from string to 
>>> date or the value remains always a date?
>>>
>>>
>>> Thanks
>>> Britt 
>>>
>>>

"Aleks Kleyn"  wrote in message 
news:337AE727-117F-4544-B05A-58246A8EE3DD@microsoft.com...


> What is functionality of viewstate collection?


Google is your friend:
http://www.google.co.uk/search?sourceid=navclient&aq=t&hl=en-GB&ie=UTF-8&rlz=1T4GGIH_en-GBGB220GB220&q=ViewState


-- 
Mark Rae
ASP.NET MVP
http://www.markrae.net

So are experienced developers. :)


Steve C.
MCAD,MCSE,MCP+I,CNE,CNA,CCNA


Mark Rae [MVP] wrote:

> "Aleks Kleyn"  wrote in message 
> news:337AE727-117F-4544-B05A-58246A8EE3DD@microsoft.com...
> 
>> What is functionality of viewstate collection?
> 
> Google is your friend:
> http://www.google.co.uk/search?sourceid=navclient&aq=t&hl=en-GB&ie=UTF-8&rlz=1T4GGIH_en-GBGB220GB220&q=ViewState 
> 
> 
>