Use Existing Object by String Name

[Damon Gravning via DotNetMonster.com]

I am trying to use one function to handle a SelectedIndexCh anged event for 5 radio button groups that correspond to 5 populated Datagrids. The radio buttons have a choice of 5,10 25 for a datagrid.pagesi ze.

I am having trouble trying to find a way to pass the name of the existing datagrid object to the function and to have it assign its the appropriate datasource, pagesize and rebind.

I found a post with this ControlFromName Function and have tried to use it but it fails with s SystemNullExcep tion in the function. Please bear with my lack of knowledge on this, reflection and some of this heavy programming is new to me. Here i my code blurb and the function as I have it. I did change it to use WebControl instead of Control since this is on as aspx page.

Thanks for any help. Damon
Dim dv As DataView
Dim dg As DataGrid
dg = CType(ControlFr omName("dgToH1" ), DataGrid)
dg.DataSource = dv
dg.DataBind()

Private Function ControlFromName (ByVal name As String) As WebControl
Dim o As Object
o = Me.GetType().Ge tField(name, Reflection.Bind ingFlags.Public Or _
Reflection.Bind ingFlags.NonPub lic Or _
Reflection.Bind ingFlags.Instan ce Or _
Reflection.Bind ingFlags.Ignore Case).GetValue( Me)

Return (CType(o, WebControl))
End Function

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[Zoury]

hi!

i've just answered this one on the french ng.. the answer is still in my
clipboard :O)
http://groups.google.com/groups?thre...TNGP10.phx.gbl

--
Best Regards
Yanick
"Damon Gravning via DotNetMonster.c om" <fo***@DotNetMo nster.com> a écrit
dans le message de
news:ab******** *************** *******@DotNetM onster.com...

I am trying to use one function to handle a SelectedIndexCh anged event for 5 radio button groups that correspond to 5 populated Datagrids. The radio
buttons have a choice of 5,10 25 for a datagrid.pagesi ze.
I am having trouble trying to find a way to pass the name of the existing datagrid object to the function and to have it assign its the appropriate
datasource, pagesize and rebind.
I found a post with this ControlFromName Function and have tried to use it but it fails with s SystemNullExcep tion in the function. Please bear with
my lack of knowledge on this, reflection and some of this heavy programming
is new to me. Here i my code blurb and the function as I have it. I did
change it to use WebControl instead of Control since this is on as aspx
page.
Thanks for any help. Damon
Dim dv As DataView
Dim dg As DataGrid
dg = CType(ControlFr omName("dgToH1" ), DataGrid)
dg.DataSource = dv
dg.DataBind()

Private Function ControlFromName (ByVal name As String) As WebControl
Dim o As Object
o = Me.GetType().Ge tField(name, Reflection.Bind ingFlags.Public Or _
Reflection.Bind ingFlags.NonPub lic Or _
Reflection.Bind ingFlags.Instan ce Or _
Reflection.Bind ingFlags.Ignore Case).GetValue( Me)

Return (CType(o, WebControl))
End Function

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[Dennis]

Could you just pass the control as an object to the Function;

Function myfunction(mygr id as DataGrid)
mygrid.property ...
End Function

"Zoury" wrote:

hi!

i've just answered this one on the french ng.. the answer is still in my
clipboard :O)
http://groups.google.com/groups?thre...TNGP10.phx.gbl

--
Best Regards
Yanick
"Damon Gravning via DotNetMonster.c om" <fo***@DotNetMo nster.com> a écrit
dans le message de
news:ab******** *************** *******@DotNetM onster.com...

I am trying to use one function to handle a SelectedIndexCh anged event for

5 radio button groups that correspond to 5 populated Datagrids. The radio
buttons have a choice of 5,10 25 for a datagrid.pagesi ze.

I am having trouble trying to find a way to pass the name of the existing

datagrid object to the function and to have it assign its the appropriate
datasource, pagesize and rebind.

I found a post with this ControlFromName Function and have tried to use it

but it fails with s SystemNullExcep tion in the function. Please bear with
my lack of knowledge on this, reflection and some of this heavy programming
is new to me. Here i my code blurb and the function as I have it. I did
change it to use WebControl instead of Control since this is on as aspx
page.

Thanks for any help. Damon
Dim dv As DataView
Dim dg As DataGrid
dg = CType(ControlFr omName("dgToH1" ), DataGrid)
dg.DataSource = dv
dg.DataBind()

Private Function ControlFromName (ByVal name As String) As WebControl
Dim o As Object
o = Me.GetType().Ge tField(name, Reflection.Bind ingFlags.Public Or _
Reflection.Bind ingFlags.NonPub lic Or _
Reflection.Bind ingFlags.Instan ce Or _
Reflection.Bind ingFlags.Ignore Case).GetValue( Me)

Return (CType(o, WebControl))
End Function

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