LoadViewState not firing

[William F. Robertson, Jr.]

I am having difficulty in diagnosing this problem and was throwing it out
for some other eyes.

I have derived my own Page class from System.Web.UI.Page and have overridden
the LoadViewState method. I derive all of my application pages from my own
Page.

For some reason on two of my pages the LoadViewState derived method is not
firing and thus not setting up some of my controls on the page. On the
other 240 ish pages, the LoadViewState method is running properly.

Interesting though, one time during the debugger it did LoadViewState, but
it seemed to only be a fluke because it didn't work the next time in debug
mode. ( no code changes )

What are some of the reasons that would cause the LoadViewState method to
not fire? I have checked and the postback page request is being correctly
identified as a postback. EnableViewState is also set to true.

TIA,

bill

1.1 .Net framework

[William F. Robertson, Jr.]

I have turned on tracing for the page and it is listing the LoadViewState in
the trace information, but it is not calling the overridden method on this
page only.

Any ideas?

bill
"William F. Robertson, Jr." <wf*********@kpmg.com> wrote in message
news:Oj**************@TK2MSFTNGP12.phx.gbl...

I am having difficulty in diagnosing this problem and was throwing it out
for some other eyes.

I have derived my own Page class from System.Web.UI.Page and have overridden the LoadViewState method. I derive all of my application pages from my own Page.

For some reason on two of my pages the LoadViewState derived method is not
firing and thus not setting up some of my controls on the page. On the
other 240 ish pages, the LoadViewState method is running properly.

Interesting though, one time during the debugger it did LoadViewState, but
it seemed to only be a fluke because it didn't work the next time in debug
mode. ( no code changes )

What are some of the reasons that would cause the LoadViewState method to
not fire? I have checked and the postback page request is being correctly
identified as a postback. EnableViewState is also set to true.

TIA,

bill

1.1 .Net framework

[Kevin Spencer]

Are you calling the Base class's LoadViewState in your override?

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"William F. Robertson, Jr." <wf*********@kpmg.com> wrote in message
news:Oj**************@TK2MSFTNGP12.phx.gbl...

I am having difficulty in diagnosing this problem and was throwing it out
for some other eyes.

I have derived my own Page class from System.Web.UI.Page and have overridden the LoadViewState method. I derive all of my application pages from my own Page.

For some reason on two of my pages the LoadViewState derived method is not
firing and thus not setting up some of my controls on the page. On the
other 240 ish pages, the LoadViewState method is running properly.

Interesting though, one time during the debugger it did LoadViewState, but
it seemed to only be a fluke because it didn't work the next time in debug
mode. ( no code changes )

What are some of the reasons that would cause the LoadViewState method to
not fire? I have checked and the postback page request is being correctly
identified as a postback. EnableViewState is also set to true.

TIA,

bill

1.1 .Net framework

[William F. Robertson, Jr.]

Hi Kevin...haven't heard from you in a while.

Here is my relevant code from my derived page:

public class SqlPage : System.Web.UI.Page
{
protected override void LoadViewState( object savedState )
{
base.LoadViewState( savedState );
_Builder = ( SqlProcedureBuilder ) ViewState[
SqlProcedureBuilder.GetGuid() ];
if ( _Builder == null )
_Builder = new SqlProcedureBuilder();

_Builder.ConnectionString = SqlConnectionString;
}
protected override object SaveViewState()
{
//if ( !Builder.IsEmpty ) ************* <---
ViewState[ SqlProcedureBuilder.GetGuid() ] = _Builder;
return base.SaveViewState();
}
}
********
When I comment the line out, the derived classes LoadViewState is called, or
when the Builder is NOT empty it works. It seems ( I am probably wrong)
that if I don't adjust the ViewState in the SaveViewState method, the
LoadViewState method will not be called on the following postback.

bill
"Kevin Spencer" <ks******@takempis.com> wrote in message
news:eG**************@TK2MSFTNGP09.phx.gbl...

Are you calling the Base class's LoadViewState in your override?

--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"William F. Robertson, Jr." <wf*********@kpmg.com> wrote in message
news:Oj**************@TK2MSFTNGP12.phx.gbl...

I am having difficulty in diagnosing this problem and was throwing it out for some other eyes.

I have derived my own Page class from System.Web.UI.Page and have

overridden

the LoadViewState method. I derive all of my application pages from my

own

Page.

For some reason on two of my pages the LoadViewState derived method is not firing and thus not setting up some of my controls on the page. On the
other 240 ish pages, the LoadViewState method is running properly.

Interesting though, one time during the debugger it did LoadViewState, but it seemed to only be a fluke because it didn't work the next time in debug mode. ( no code changes )

What are some of the reasons that would cause the LoadViewState method to not fire? I have checked and the postback page request is being correctly identified as a postback. EnableViewState is also set to true.

TIA,

bill

1.1 .Net framework

[Kevin Spencer]

Hi Bill,

I'm wondering if the SaveViewState may be erroring out, causing the
ViewState not to load. You might try putting a try/catch in there, and using
the Finally block to load the base's ViewState. It is possible that you may
be experiencing a null reference error in that method (if _Builder is null).

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"William F. Robertson, Jr." <wf*********@kpmg.com> wrote in message
news:uW*************@tk2msftngp13.phx.gbl...

Hi Kevin...haven't heard from you in a while.

Here is my relevant code from my derived page:

public class SqlPage : System.Web.UI.Page
{
protected override void LoadViewState( object savedState )
{
base.LoadViewState( savedState );
_Builder = ( SqlProcedureBuilder ) ViewState[
SqlProcedureBuilder.GetGuid() ];
if ( _Builder == null )
_Builder = new SqlProcedureBuilder();

_Builder.ConnectionString = SqlConnectionString;
}
protected override object SaveViewState()
{
//if ( !Builder.IsEmpty ) ************* <---
ViewState[ SqlProcedureBuilder.GetGuid() ] = _Builder;
return base.SaveViewState();
}
}
********
When I comment the line out, the derived classes LoadViewState is called, or when the Builder is NOT empty it works. It seems ( I am probably wrong)
that if I don't adjust the ViewState in the SaveViewState method, the
LoadViewState method will not be called on the following postback.

bill
"Kevin Spencer" <ks******@takempis.com> wrote in message
news:eG**************@TK2MSFTNGP09.phx.gbl...

Are you calling the Base class's LoadViewState in your override?

--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"William F. Robertson, Jr." <wf*********@kpmg.com> wrote in message
news:Oj**************@TK2MSFTNGP12.phx.gbl...

I am having difficulty in diagnosing this problem and was throwing it out for some other eyes.

I have derived my own Page class from System.Web.UI.Page and have

overridden

the LoadViewState method. I derive all of my application pages from my

own

Page.

For some reason on two of my pages the LoadViewState derived method is not firing and thus not setting up some of my controls on the page. On

the other 240 ish pages, the LoadViewState method is running properly.

Interesting though, one time during the debugger it did LoadViewState,

but it seemed to only be a fluke because it didn't work the next time in debug mode. ( no code changes )

What are some of the reasons that would cause the LoadViewState method to not fire? I have checked and the postback page request is being correctly identified as a postback. EnableViewState is also set to true.

TIA,

bill

1.1 .Net framework

[William F. Robertson, Jr.]

Kevin,

I have checked through debugger and no exceptions are through and the
accessor for the Builder will check _Builder and create if null.

When I change the SaveViewState method to

ViewState["Bob"] = new object();
return base.SaveViewState();

The LoadViewState is always called.

I am leaning more and more to the LoadViewState method is not called on the
page when the page doesn't put anything into viewstate regardless if any of
the contained controls have viewstate. (which they do.)

Thanks,

bill
"Kevin Spencer" <ks******@takempis.com> wrote in message
news:eN****************@TK2MSFTNGP09.phx.gbl...

Hi Bill,

I'm wondering if the SaveViewState may be erroring out, causing the
ViewState not to load. You might try putting a try/catch in there, and using the Finally block to load the base's ViewState. It is possible that you may be experiencing a null reference error in that method (if _Builder is null).
--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"William F. Robertson, Jr." <wf*********@kpmg.com> wrote in message
news:uW*************@tk2msftngp13.phx.gbl...

Hi Kevin...haven't heard from you in a while.

Here is my relevant code from my derived page:

public class SqlPage : System.Web.UI.Page
{
protected override void LoadViewState( object savedState )
{
base.LoadViewState( savedState );
_Builder = ( SqlProcedureBuilder ) ViewState[
SqlProcedureBuilder.GetGuid() ];
if ( _Builder == null )
_Builder = new SqlProcedureBuilder();

_Builder.ConnectionString = SqlConnectionString;
}
protected override object SaveViewState()
{
//if ( !Builder.IsEmpty ) ************* <---
ViewState[ SqlProcedureBuilder.GetGuid() ] = _Builder;
return base.SaveViewState();
}
}
********
When I comment the line out, the derived classes LoadViewState is called,

or

when the Builder is NOT empty it works. It seems ( I am probably wrong)
that if I don't adjust the ViewState in the SaveViewState method, the
LoadViewState method will not be called on the following postback.

bill
"Kevin Spencer" <ks******@takempis.com> wrote in message
news:eG**************@TK2MSFTNGP09.phx.gbl...

Are you calling the Base class's LoadViewState in your override?

--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"William F. Robertson, Jr." <wf*********@kpmg.com> wrote in message
news:Oj**************@TK2MSFTNGP12.phx.gbl...
> I am having difficulty in diagnosing this problem and was throwing

it out

> for some other eyes.
>
> I have derived my own Page class from System.Web.UI.Page and have
overridden
> the LoadViewState method. I derive all of my application pages from my own
> Page.
>
> For some reason on two of my pages the LoadViewState derived method

is not

> firing and thus not setting up some of my controls on the page. On the > other 240 ish pages, the LoadViewState method is running properly.
>
> Interesting though, one time during the debugger it did

LoadViewState, but

> it seemed to only be a fluke because it didn't work the next time in

debug

> mode. ( no code changes )
>
> What are some of the reasons that would cause the LoadViewState

method to

> not fire? I have checked and the postback page request is being

correctly

> identified as a postback. EnableViewState is also set to true.
>
> TIA,
>
> bill
>
> 1.1 .Net framework
>
>