can't get Me.FindControl to work

[AAaron123]

Me.FindControl("MissionScheduleID"), below returns null.

Do you know what I'm doing wrong?

Thanks

***In my .aspx file I have:

asp:Content ID="Content3" contentplaceholderid="MainMasterLeftDataID"
runat="server">

<div class="MainMasterDataAqua">

...snip...RadioButtons

</div>

<br />

<iframe runat="server" id="MissionScheduleID" frameborder="0"
src="Schedule.htm" width="100%" height="100%" </iframe</asp:Content>

***In the .vb file:

Protected WithEvents frame1 As System.Web.UI.HtmlControls.HtmlGenericControl

Protected Sub RadioButtonMission_CheckedChanged(ByVal sender As Object,
ByVal e As System.EventArgs) Handles RadioButtonMission.CheckedChanged

frame1 = CType(Me.FindControl("MissionScheduleID"), HtmlControl)

[HillBilly]

To find controls in the content page:

1st we have to ensure we type the Master in the content page...
<%@ MasterType VirtualPath="~/Masters/MasterPage.master" %>

2nd enable trace in the content page and observe all of the parent
containers using the FindControl on each of them...

Master.FindControl("...").FindControl("...").FindC ontrol"MissionScheduleID")


"AAaron123" <aa*******@roadrunner.comwrote in message
news:uZ**************@TK2MSFTNGP02.phx.gbl...

Me.FindControl("MissionScheduleID"), below returns null.

Do you know what I'm doing wrong?

Thanks

***In my .aspx file I have:

asp:Content ID="Content3" contentplaceholderid="MainMasterLeftDataID"
runat="server">

<div class="MainMasterDataAqua">

..snip...RadioButtons

</div>

<br />

<iframe runat="server" id="MissionScheduleID" frameborder="0"
src="Schedule.htm" width="100%" height="100%" </iframe</asp:Content>

***In the .vb file:

Protected WithEvents frame1 As
System.Web.UI.HtmlControls.HtmlGenericControl

Protected Sub RadioButtonMission_CheckedChanged(ByVal sender As Object,
ByVal e As System.EventArgs) Handles RadioButtonMission.CheckedChanged

frame1 = CType(Me.FindControl("MissionScheduleID"), HtmlControl)

[AAaron123]

Your note got me closer.

First time I saw trace output.
Not sure how to recognize parents.
Mabye the part reproduced below?

I tried QuickWatch with Master.FindControl("...") with tried different
things.
aspnetForm id not work but Table1 did. So I tried :

Master.FindControl("Table1").FindControl("TableRow 9") but that didn't work.

Am I getting close or wondering afar?

Thanks for the help

__Page
ctl00
ctl00$ctl04
ctl00$Head1
ctl00$ctl00
ctl00$ctl01
ctl00$ctl02
ctl00$ctl05
ctl00$ctl03
ctl00$ctl06
ctl00$ctl07
aspnetForm
ctl00$ctl08
ctl00$Table1
ctl00$TableRow0
ctl00$TableCellR0C0S2
ctl00$TableRow1
ctl00$TableRow2
ctl00$TableCellR2C0S2
ctl00$NavigationMenu
ctl00$TableRow3
ctl00$TableCellR3C0
ctl00$TableCellR3C1
ctl00$SiteMapPath1
ctl00$TableRow4
snip...
ctl00$MainMasterDataRightID
ctl00$MainMasterDataRightID$ctl00
ctl00$TableRow8
ctl00$TableCellR8C0
ctl00$TableRow9
ctl00$TableCellR9C0
ctl00$MainMasterLeftDataID
ctl00$MainMasterLeftDataID$ctl00
ctl00$MainMasterLeftDataID$RadioButtonMission
ctl00$MainMasterLeftDataID$ctl01
ctl00$MainMasterLeftDataID$RadioButtonSchedules
ctl00$MainMasterLeftDataID$ctl02
ctl00$MainMasterLeftDataID$MissionScheduleID
ctl00$MainMasterLeftDataID$ctl03
ctl00$TableRow10


"HillBilly" <so******@somewhere.comwrote in message
news:%2****************@TK2MSFTNGP03.phx.gbl...

To find controls in the content page:

1st we have to ensure we type the Master in the content page...
<%@ MasterType VirtualPath="~/Masters/MasterPage.master" %>

2nd enable trace in the content page and observe all of the parent
containers using the FindControl on each of them...

Master.FindControl("...").FindControl("...").FindC ontrol"MissionScheduleID")


"AAaron123" <aa*******@roadrunner.comwrote in message
news:uZ**************@TK2MSFTNGP02.phx.gbl...

>Me.FindControl("MissionScheduleID"), below returns null.

Do you know what I'm doing wrong?

Thanks

***In my .aspx file I have:

asp:Content ID="Content3" contentplaceholderid="MainMasterLeftDataID"
runat="server">

<div class="MainMasterDataAqua">

..snip...RadioButtons

</div>

<br />

<iframe runat="server" id="MissionScheduleID" frameborder="0"
src="Schedule.htm" width="100%" height="100%" </iframe</asp:Content>

***In the .vb file:

Protected WithEvents frame1 As
System.Web.UI.HtmlControls.HtmlGenericControl

Protected Sub RadioButtonMission_CheckedChanged(ByVal sender As Object,
ByVal e As System.EventArgs) Handles RadioButtonMission.CheckedChanged

frame1 = CType(Me.FindControl("MissionScheduleID"), HtmlControl)

[AAaron123]

Typos??? Maybe. but what I couldn't get to working yesterday works OK today.
So I'm all set.

Except I'm wondering.
I find it works with or without:
<%@ MasterType VirtualPath="~/Main.master" %>

Is that some how covered in:

<%@ Page AutoEventWireup="false" Language="VB"
MasterPageFile="~/Main.master" Title="Internet Site"

CodeFile="Default.aspx.vb" Inherits="Default_aspx"
MaintainScrollPositionOnPostback="true" Trace="true" %>

I read the help about MasterType but don't fully understand it.

Is it that "Master" can return different things so what I want needs to be
specified?

Thanks for the help
"HillBilly" <so******@somewhere.comwrote in message
news:%2****************@TK2MSFTNGP03.phx.gbl...

To find controls in the content page:

1st we have to ensure we type the Master in the content page...
<%@ MasterType VirtualPath="~/Masters/MasterPage.master" %>

2nd enable trace in the content page and observe all of the parent
containers using the FindControl on each of them...

Master.FindControl("...").FindControl("...").FindC ontrol"MissionScheduleID")


"AAaron123" <aa*******@roadrunner.comwrote in message
news:uZ**************@TK2MSFTNGP02.phx.gbl...

>Me.FindControl("MissionScheduleID"), below returns null.

Do you know what I'm doing wrong?

Thanks

***In my .aspx file I have:

asp:Content ID="Content3" contentplaceholderid="MainMasterLeftDataID"
runat="server">

<div class="MainMasterDataAqua">

..snip...RadioButtons

</div>

<br />

<iframe runat="server" id="MissionScheduleID" frameborder="0"
src="Schedule.htm" width="100%" height="100%" </iframe</asp:Content>

***In the .vb file:

Protected WithEvents frame1 As
System.Web.UI.HtmlControls.HtmlGenericControl

Protected Sub RadioButtonMission_CheckedChanged(ByVal sender As Object,
ByVal e As System.EventArgs) Handles RadioButtonMission.CheckedChanged

frame1 = CType(Me.FindControl("MissionScheduleID"), HtmlControl)

[HillBilly]

I might have it bass ackwards but typing the Master is required to reference
controls found in the content page after the master has been merged with the
content page by the compiler which must generate separate control trees that
get merged into one; referencing controls in the MasterPage itself would not
then require typing as their type is already known. Its something like that.

Go to K. Scott Allen's definitive discussion of the topic at
http://odetocode.com/
"AAaron123" <aa*******@roadrunner.comwrote in message
news:%2****************@TK2MSFTNGP05.phx.gbl...

Typos??? Maybe. but what I couldn't get to working yesterday works OK
today.
So I'm all set.

Except I'm wondering.
I find it works with or without:
<%@ MasterType VirtualPath="~/Main.master" %>

Is that some how covered in:

<%@ Page AutoEventWireup="false" Language="VB"
MasterPageFile="~/Main.master" Title="Internet Site"

CodeFile="Default.aspx.vb" Inherits="Default_aspx"
MaintainScrollPositionOnPostback="true" Trace="true" %>

I read the help about MasterType but don't fully understand it.

Is it that "Master" can return different things so what I want needs to be
specified?

Thanks for the help
"HillBilly" <so******@somewhere.comwrote in message
news:%2****************@TK2MSFTNGP03.phx.gbl...

>To find controls in the content page:

1st we have to ensure we type the Master in the content page...
<%@ MasterType VirtualPath="~/Masters/MasterPage.master" %>

2nd enable trace in the content page and observe all of the parent
containers using the FindControl on each of them...

Master.FindControl("...").FindControl("...").Find Control"MissionScheduleID")


"AAaron123" <aa*******@roadrunner.comwrote in message
news:uZ**************@TK2MSFTNGP02.phx.gbl...

>>Me.FindControl("MissionScheduleID"), below returns null.

Do you know what I'm doing wrong?

Thanks

***In my .aspx file I have:

asp:Content ID="Content3" contentplaceholderid="MainMasterLeftDataID"
runat="server">

<div class="MainMasterDataAqua">

..snip...RadioButtons

</div>

<br />

<iframe runat="server" id="MissionScheduleID" frameborder="0"
src="Schedule.htm" width="100%" height="100%" </iframe</asp:Content>

***In the .vb file:

Protected WithEvents frame1 As
System.Web.UI.HtmlControls.HtmlGenericControl

Protected Sub RadioButtonMission_CheckedChanged(ByVal sender As Object,
ByVal e As System.EventArgs) Handles RadioButtonMission.CheckedChanged

frame1 = CType(Me.FindControl("MissionScheduleID"), HtmlControl)

[HillBilly]

Can you pull the control your trying to reference out of the HtmlTable
control and write the HTML yourself? Your control and its parent containers
will be easier to read and access. Generally speaking parent containers will
be controls templates used in the content pages.

But otherwise, keep trying with each table item like
Master.FindControl("Table1").FindControl("TableRow 9").FindControl("TableCellR9C0").FindControl("..." )
until you find it. Another way to determine a container is to read the
control's Type in the Control Tree. Its often a guessing game and trying
until you get the right containers identified. Very messy with MasterPages
"AAaron123" <aa*******@roadrunner.comwrote in message
news:uM**************@TK2MSFTNGP04.phx.gbl...

Your note got me closer.

First time I saw trace output.
Not sure how to recognize parents.
Mabye the part reproduced below?

I tried QuickWatch with Master.FindControl("...") with tried different
things.
aspnetForm id not work but Table1 did. So I tried :

Master.FindControl("Table1").FindControl("TableRow 9") but that didn't
work.

Am I getting close or wondering afar?

Thanks for the help

__Page
ctl00
ctl00$ctl04
ctl00$Head1
ctl00$ctl00
ctl00$ctl01
ctl00$ctl02
ctl00$ctl05
ctl00$ctl03
ctl00$ctl06
ctl00$ctl07
aspnetForm
ctl00$ctl08
ctl00$Table1
ctl00$TableRow0
ctl00$TableCellR0C0S2
ctl00$TableRow1
ctl00$TableRow2
ctl00$TableCellR2C0S2
ctl00$NavigationMenu
ctl00$TableRow3
ctl00$TableCellR3C0
ctl00$TableCellR3C1
ctl00$SiteMapPath1
ctl00$TableRow4
snip...
ctl00$MainMasterDataRightID
ctl00$MainMasterDataRightID$ctl00
ctl00$TableRow8
ctl00$TableCellR8C0
ctl00$TableRow9
ctl00$TableCellR9C0
ctl00$MainMasterLeftDataID
ctl00$MainMasterLeftDataID$ctl00
ctl00$MainMasterLeftDataID$RadioButtonMission
ctl00$MainMasterLeftDataID$ctl01
ctl00$MainMasterLeftDataID$RadioButtonSchedules
ctl00$MainMasterLeftDataID$ctl02
ctl00$MainMasterLeftDataID$MissionScheduleID
ctl00$MainMasterLeftDataID$ctl03
ctl00$TableRow10


"HillBilly" <so******@somewhere.comwrote in message
news:%2****************@TK2MSFTNGP03.phx.gbl...

>To find controls in the content page:

1st we have to ensure we type the Master in the content page...
<%@ MasterType VirtualPath="~/Masters/MasterPage.master" %>

2nd enable trace in the content page and observe all of the parent
containers using the FindControl on each of them...

Master.FindControl("...").FindControl("...").Find Control"MissionScheduleID")


"AAaron123" <aa*******@roadrunner.comwrote in message
news:uZ**************@TK2MSFTNGP02.phx.gbl...

>>Me.FindControl("MissionScheduleID"), below returns null.

Do you know what I'm doing wrong?

Thanks

***In my .aspx file I have:

asp:Content ID="Content3" contentplaceholderid="MainMasterLeftDataID"
runat="server">

<div class="MainMasterDataAqua">

..snip...RadioButtons

</div>

<br />

<iframe runat="server" id="MissionScheduleID" frameborder="0"
src="Schedule.htm" width="100%" height="100%" </iframe</asp:Content>

***In the .vb file:

Protected WithEvents frame1 As
System.Web.UI.HtmlControls.HtmlGenericControl

Protected Sub RadioButtonMission_CheckedChanged(ByVal sender As Object,
ByVal e As System.EventArgs) Handles RadioButtonMission.CheckedChanged

frame1 = CType(Me.FindControl("MissionScheduleID"), HtmlControl)

[AAaron123]

"HillBilly" <so******@somewhere.comwrote in message
news:Ov****************@TK2MSFTNGP02.phx.gbl...

Can you pull the control your trying to reference out of the HtmlTable
control and write the HTML yourself?

I don't know what this means. A way of doing it without FindControl maybe??

>Your control and its parent containers will be easier to read and access.
Generally speaking parent containers will be controls templates used in the
content pages.

But otherwise, keep trying with each table item like
Master.FindControl("Table1").FindControl("TableRow 9").FindControl("TableCellR9C0").FindControl("..." )
until you find it. Another way to determine a container is to read the
control's Type in the Control Tree. Its often a guessing game and trying
until you get the right containers identified. Very messy with MasterPages

As I mentioned in the other post I did succeed. And I noticed you pulled the
correct format from the tree without any trouble!

Thanks

>

"AAaron123" <aa*******@roadrunner.comwrote in message
news:uM**************@TK2MSFTNGP04.phx.gbl...

>Your note got me closer.

First time I saw trace output.
Not sure how to recognize parents.
Mabye the part reproduced below?

I tried QuickWatch with Master.FindControl("...") with tried different
things.
aspnetForm id not work but Table1 did. So I tried :

Master.FindControl("Table1").FindControl("TableRo w9") but that didn't
work.

Am I getting close or wondering afar?

Thanks for the help

__Page
ctl00
ctl00$ctl04
ctl00$Head1
ctl00$ctl00
ctl00$ctl01
ctl00$ctl02
ctl00$ctl05
ctl00$ctl03
ctl00$ctl06
ctl00$ctl07
aspnetForm
ctl00$ctl08
ctl00$Table1
ctl00$TableRow0
ctl00$TableCellR0C0S2
ctl00$TableRow1
ctl00$TableRow2
ctl00$TableCellR2C0S2
ctl00$NavigationMenu
ctl00$TableRow3
ctl00$TableCellR3C0
ctl00$TableCellR3C1
ctl00$SiteMapPath1
ctl00$TableRow4
snip...
ctl00$MainMasterDataRightID
ctl00$MainMasterDataRightID$ctl00
ctl00$TableRow8
ctl00$TableCellR8C0
ctl00$TableRow9
ctl00$TableCellR9C0
ctl00$MainMasterLeftDataID
ctl00$MainMasterLeftDataID$ctl00
ctl00$MainMasterLeftDataID$RadioButtonMission
ctl00$MainMasterLeftDataID$ctl01

ctl00$MainMasterLeftDataID$RadioButtonSchedules
ctl00$MainMasterLeftDataID$ctl02
ctl00$MainMasterLeftDataID$MissionScheduleID
ctl00$MainMasterLeftDataID$ctl03
ctl00$TableRow10


"HillBilly" <so******@somewhere.comwrote in message
news:%2****************@TK2MSFTNGP03.phx.gbl...

>>To find controls in the content page:

1st we have to ensure we type the Master in the content page...
<%@ MasterType VirtualPath="~/Masters/MasterPage.master" %>

2nd enable trace in the content page and observe all of the parent
containers using the FindControl on each of them...

Master.FindControl("...").FindControl("...").Fin dControl"MissionScheduleID")


"AAaron123" <aa*******@roadrunner.comwrote in message
news:uZ**************@TK2MSFTNGP02.phx.gbl...
Me.FindControl("MissionScheduleID"), below returns null.

Do you know what I'm doing wrong?

Thanks

***In my .aspx file I have:

asp:Content ID="Content3" contentplaceholderid="MainMasterLeftDataID"
runat="server">

<div class="MainMasterDataAqua">

..snip...RadioButtons

</div>

<br />

<iframe runat="server" id="MissionScheduleID" frameborder="0"
src="Schedule.htm" width="100%" height="100%" </iframe>
</asp:Content>

***In the .vb file:

Protected WithEvents frame1 As
System.Web.UI.HtmlControls.HtmlGenericControl

Protected Sub RadioButtonMission_CheckedChanged(ByVal sender As Object,
ByVal e As System.EventArgs) Handles RadioButtonMission.CheckedChanged

frame1 = CType(Me.FindControl("MissionScheduleID"), HtmlControl)

[AAaron123]

I think it saves add CType.
But I have this in my .aspx
Note it is commented out.
The comments are Allen's
<%--<%@ MasterType VirtualPath="~/Main.master" %>--%>

<%--<%@ MasterType VirtualPath="~/otc.master" %>

Now when ASP.NET codegens the page, it puts the following inside a partial
class definition.

Public Shadows ReadOnly Property Master() As otc

Get

Return CType(MyBase.Master,otcMaster)

End Get

End Property

--%>

And this in my .vb

frame1 =
Me.Master.FindControl("Table1").FindControl("Table Row9").FindControl("TableCellR9C0").FindControl("M ainMasterLeftDataID").FindControl("MissionSchedule ID")

and it works OK.

Seems I should need a CType around Me.Master.

It's academic at this point but interesting.

thanks


"HillBilly" <so******@somewhere.comwrote in message
news:%2****************@TK2MSFTNGP02.phx.gbl...

>I might have it bass ackwards but typing the Master is required to
reference controls found in the content page after the master has been
merged with the content page by the compiler which must generate separate
control trees that get merged into one; referencing controls in the
MasterPage itself would not then require typing as their type is already
known. Its something like that.

Go to K. Scott Allen's definitive discussion of the topic at
http://odetocode.com/
"AAaron123" <aa*******@roadrunner.comwrote in message
news:%2****************@TK2MSFTNGP05.phx.gbl...

>Typos??? Maybe. but what I couldn't get to working yesterday works OK
today.
So I'm all set.

Except I'm wondering.
I find it works with or without:
<%@ MasterType VirtualPath="~/Main.master" %>

Is that some how covered in:

<%@ Page AutoEventWireup="false" Language="VB"
MasterPageFile="~/Main.master" Title="Internet Site"

CodeFile="Default.aspx.vb" Inherits="Default_aspx"
MaintainScrollPositionOnPostback="true" Trace="true" %>

I read the help about MasterType but don't fully understand it.

Is it that "Master" can return different things so what I want needs to
be specified?

Thanks for the help
"HillBilly" <so******@somewhere.comwrote in message
news:%2****************@TK2MSFTNGP03.phx.gbl...

>>To find controls in the content page:

1st we have to ensure we type the Master in the content page...
<%@ MasterType VirtualPath="~/Masters/MasterPage.master" %>

2nd enable trace in the content page and observe all of the parent
containers using the FindControl on each of them...

Master.FindControl("...").FindControl("...").Fin dControl"MissionScheduleID")


"AAaron123" <aa*******@roadrunner.comwrote in message
news:uZ**************@TK2MSFTNGP02.phx.gbl...
Me.FindControl("MissionScheduleID"), below returns null.

Do you know what I'm doing wrong?

Thanks

***In my .aspx file I have:

asp:Content ID="Content3" contentplaceholderid="MainMasterLeftDataID"
runat="server">

<div class="MainMasterDataAqua">

..snip...RadioButtons

</div>

<br />

<iframe runat="server" id="MissionScheduleID" frameborder="0"
src="Schedule.htm" width="100%" height="100%" </iframe>
</asp:Content>

***In the .vb file:

Protected WithEvents frame1 As
System.Web.UI.HtmlControls.HtmlGenericControl

Protected Sub RadioButtonMission_CheckedChanged(ByVal sender As Object,
ByVal e As System.EventArgs) Handles RadioButtonMission.CheckedChanged

frame1 = CType(Me.FindControl("MissionScheduleID"), HtmlControl)