Hello,
I'm using typed dataset for databinding to windows controls and I'm having
some problems.
I'm trying to move all business logic to datatable column_changing events
and the problem that I'm having is when I change some other column, control
value doesn't update immediately until I call endcurrentedit on
bindingmanager which doesnt happen until user click update button.
Here's my problem:
Private Sub BusinessPartner DataTable_Colum nChanging(ByVal sender As
System.Object, ByVal e As System.Data.Dat aColumnChangeEv entArgs) Handles
Me.ColumnChangi ng
Select Case e.Column.Column Name
Case Me.dbaColumn.Co lumnName
Me(0).categoryI D = "changed_column "
End Select
End Sub
Now, unerlying dataset.datatab le(0).categoryI D is indeed changed but
databound textbox control remains the same.
How can I force databinding.upd ate from dataset/datatable?
Thanks,
Vlado
7  2597 
Which version of .Net are you using? 2003 or 2005?
Robin S.
------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:4L******** *************** *******@giganew s.com...
Hello,
I'm using typed dataset for databinding to windows controls and I'm
having some problems.
I'm trying to move all business logic to datatable column_changing
events and the problem that I'm having is when I change some other
column, control value doesn't update immediately until I call
endcurrentedit on bindingmanager which doesnt happen until user click
update button.
Here's my problem:
Private Sub BusinessPartner DataTable_Colum nChanging(ByVal sender As
System.Object, ByVal e As System.Data.Dat aColumnChangeEv entArgs)
Handles Me.ColumnChangi ng
Select Case e.Column.Column Name
Case Me.dbaColumn.Co lumnName
Me(0).categoryI D = "changed_column "
End Select
End Sub
Now, unerlying dataset.datatab le(0).categoryI D is indeed changed but
databound textbox control remains the same.
How can I force databinding.upd ate from dataset/datatable?
Thanks,
Vlado
VB.Net 2005 and Datatable/TableAdapter.
"RobinS" <Ro****@NoSpam. yah.nonewrote in message
news:9a******** *************** *******@comcast .com...
Which version of .Net are you using? 2003 or 2005?
Robin S.
------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:4L******** *************** *******@giganew s.com...
>Hello,
I'm using typed dataset for databinding to windows controls and I'm
having some problems.
I'm trying to move all business logic to datatable column_changing events
and the problem that I'm having is when I change some other column,
control value doesn't update immediately until I call endcurrentedit on
bindingmanag er which doesnt happen until user click update button.
Here's my problem:
Private Sub BusinessPartner DataTable_Colum nChanging(ByVal sender As
System.Objec t, ByVal e As System.Data.Dat aColumnChangeEv entArgs) Handles
Me.ColumnChang ing
Select Case e.Column.Column Name
Case Me.dbaColumn.Co lumnName
Me(0).category ID = "changed_column "
End Select
End Sub
Now, unerlying dataset.datatab le(0).categoryI D is indeed changed but
databound textbox control remains the same.
How can I force databinding.upd ate from dataset/datatable?
Thanks,
Vlado
Did you figure out the answer to this, or are you still hanging?
Because I have a pretty good idea, if you still need an answer...
Robin S.
---------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:rp******** *************** *******@giganew s.com...
VB.Net 2005 and Datatable/TableAdapter.
"RobinS" <Ro****@NoSpam. yah.nonewrote in message
news:9a******** *************** *******@comcast .com...
>Which version of .Net are you using? 2003 or 2005?
Robin S.
------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:4L******* *************** ********@gigane ws.com...
>>Hello,
I'm using typed dataset for databinding to windows controls and I'm
having some problems.
I'm trying to move all business logic to datatable column_changing
events and the problem that I'm having is when I change some other
column, control value doesn't update immediately until I call
endcurrentedi t on bindingmanager which doesnt happen until user
click update button.
Here's my problem:
Private Sub BusinessPartner DataTable_Colum nChanging(ByVal sender As
System.Object , ByVal e As System.Data.Dat aColumnChangeEv entArgs)
Handles Me.ColumnChangi ng
Select Case e.Column.Column Name
Case Me.dbaColumn.Co lumnName
Me(0).categor yID = "changed_column "
End Select
End Sub
Now, unerlying dataset.datatab le(0).categoryI D is indeed changed but
databound textbox control remains the same.
How can I force databinding.upd ate from dataset/datatable?
Thanks,
Vlado
Still need an answer.
I made a workaround by creating an event under datatable and form subscribes
to it and calls BindingManager. EndCurrentEdit but would like to know if
there's another way.
Thanks,
Vlado
"RobinS" <Ro****@NoSpam. yah.nonewrote in message
news:eO******** *************** *******@comcast .com...
Did you figure out the answer to this, or are you still hanging?
Because I have a pretty good idea, if you still need an answer...
Robin S.
---------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:rp******** *************** *******@giganew s.com...
>VB.Net 2005 and Datatable/TableAdapter.
"RobinS" <Ro****@NoSpam. yah.nonewrote in message
news:9a******* *************** ********@comcas t.com...
>>Which version of .Net are you using? 2003 or 2005?
Robin S.
------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:4L****** *************** *********@gigan ews.com...
Hello,
I'm using typed dataset for databinding to windows controls and I'm
having some problems.
I'm trying to move all business logic to datatable column_changing
events and the problem that I'm having is when I change some other
column, control value doesn't update immediately until I call
endcurrented it on bindingmanager which doesnt happen until user click
update button.
Here's my problem:
Private Sub BusinessPartner DataTable_Colum nChanging(ByVal sender As
System.Objec t, ByVal e As System.Data.Dat aColumnChangeEv entArgs)
Handles Me.ColumnChangi ng
Select Case e.Column.Column Name
Case Me.dbaColumn.Co lumnName
Me(0).catego ryID = "changed_column "
End Select
End Sub
Now, unerlying dataset.datatab le(0).categoryI D is indeed changed but
databound textbox control remains the same.
How can I force databinding.upd ate from dataset/datatable?
Thanks,
Vlado
Why are you using the Column_Changing events? Just a masochist? In my
experience, events never work the way you think they should in .Net, or in
the order you think they should.
Anyway, if I understand what you're doing, you're changing the data source
and the change is not reflected in the data displayed in the controls on
the screen that are bound to that data source.
Have you checked out the BindingSource? It is an intermediary between your
controls and your data source, and immediately reflects any changes made to
the data source in the controls. To push it the other way, you invoke
EndEdit. Then of course, you have to call Update on your adapter to push
the changes down to the data source.
So you add a Binding Source (add the component to your form from the Data
toolbox).
Set the data source of it to your data table.
myBindingSource .DataSource = myDataTable
Then bind your controls to the BindingSource.
myTextBox.DataB indings.Add(new Binding("Text", _
myBindingSource , "CompanyNam e", true))
myGrid.DataSour ce = myBindingSource
See if that gets you anywhere. And answer my question at the top; maybe I
can recommend another solution.
I use the n-layer model, so all of the data I display on the screen is
defined in Classes. I capture changes to them when the Property value is
modified.
Robin S.
-------------------------------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:ka******** *************** *******@giganew s.com...
Still need an answer.
I made a workaround by creating an event under datatable and form
subscribes to it and calls BindingManager. EndCurrentEdit but would like
to know if there's another way.
Thanks,
Vlado
"RobinS" <Ro****@NoSpam. yah.nonewrote in message
news:eO******** *************** *******@comcast .com...
>Did you figure out the answer to this, or are you still hanging?
Because I have a pretty good idea, if you still need an answer...
Robin S.
---------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:rp******* *************** ********@gigane ws.com...
>>VB.Net 2005 and Datatable/TableAdapter.
"RobinS" <Ro****@NoSpam. yah.nonewrote in message
news:9a****** *************** *********@comca st.com...
Which version of .Net are you using? 2003 or 2005?
Robin S.
------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:4L***** *************** **********@giga news.com...
Hello,
>
I'm using typed dataset for databinding to windows controls and I'm
having some problems.
>
I'm trying to move all business logic to datatable column_changing
events and the problem that I'm having is when I change some other
column, control value doesn't update immediately until I call
endcurrente dit on bindingmanager which doesnt happen until user click
update button.
>
Here's my problem:
>
Private Sub BusinessPartner DataTable_Colum nChanging(ByVal sender As
System.Obje ct, ByVal e As System.Data.Dat aColumnChangeEv entArgs)
Handles Me.ColumnChangi ng
Select Case e.Column.Column Name
>
Case Me.dbaColumn.Co lumnName
>
Me(0).categ oryID = "changed_column "
>
End Select
>
>
End Sub
>
>
Now, unerlying dataset.datatab le(0).categoryI D is indeed changed but
databound textbox control remains the same.
>
>
>
How can I force databinding.upd ate from dataset/datatable?
>
>
>
Thanks,
>
>
>
Vlado
>
>
Robin,
I'm using Column_Changing mostly to validate input.
In this case, Column_Changing should change different column depending on
current column's value.
I know about BindingSource and I'm using BindingManager but that's on form
level.
I didn't find a way to force databinding update from a datatable except as a
workaround with raising Event as described.
Also, I do use n-tier model but Business and Data tier is contained in one
layer (Datasets/Datatable). All the validation/ updating datasource happens
here. This is acceptable scenario for us as we don't anticipate having
database source other than MSSQL and don't have problem with BusinessObjects
and DataLayer not being loosely coupled.
Again, the only problem is how to force Databinding, EndCurrentEdit from
Datatable.
"RobinS" <Ro****@NoSpam. yah.nonewrote in message
news:Fr******** *************** *******@comcast .com...
Why are you using the Column_Changing events? Just a masochist? In my
experience, events never work the way you think they should in .Net, or in
the order you think they should.
Anyway, if I understand what you're doing, you're changing the data source
and the change is not reflected in the data displayed in the controls on
the screen that are bound to that data source.
Have you checked out the BindingSource? It is an intermediary between your
controls and your data source, and immediately reflects any changes made
to the data source in the controls. To push it the other way, you invoke
EndEdit. Then of course, you have to call Update on your adapter to push
the changes down to the data source.
So you add a Binding Source (add the component to your form from the Data
toolbox).
Set the data source of it to your data table.
myBindingSource .DataSource = myDataTable
Then bind your controls to the BindingSource.
myTextBox.DataB indings.Add(new Binding("Text", _
myBindingSource , "CompanyNam e", true))
myGrid.DataSour ce = myBindingSource
See if that gets you anywhere. And answer my question at the top; maybe I
can recommend another solution.
I use the n-layer model, so all of the data I display on the screen is
defined in Classes. I capture changes to them when the Property value is
modified.
Robin S.
-------------------------------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:ka******** *************** *******@giganew s.com...
>Still need an answer.
I made a workaround by creating an event under datatable and form
subscribes to it and calls BindingManager. EndCurrentEdit but would like
to know if there's another way.
Thanks,
Vlado
"RobinS" <Ro****@NoSpam. yah.nonewrote in message
news:eO******* *************** ********@comcas t.com...
>>Did you figure out the answer to this, or are you still hanging?
Because I have a pretty good idea, if you still need an answer...
Robin S.
---------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:rp****** *************** *********@gigan ews.com...
VB.Net 2005 and Datatable/TableAdapter.
"RobinS" <Ro****@NoSpam. yah.nonewrote in message
news:9a***** *************** **********@comc ast.com...
Which version of .Net are you using? 2003 or 2005?
>
Robin S.
------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:4L**** *************** ***********@gig anews.com...
>Hello,
>>
>I'm using typed dataset for databinding to windows controls and I'm
>having some problems.
>>
>I'm trying to move all business logic to datatable column_changing
>events and the problem that I'm having is when I change some other
>column, control value doesn't update immediately until I call
>endcurrent edit on bindingmanager which doesnt happen until user click
>update button.
>>
>Here's my problem:
>>
>Private Sub BusinessPartner DataTable_Colum nChanging(ByVal sender As
>System.Obj ect, ByVal e As System.Data.Dat aColumnChangeEv entArgs)
>Handles Me.ColumnChangi ng
>Select Case e.Column.Column Name
>>
>Case Me.dbaColumn.Co lumnName
>>
>Me(0).cate goryID = "changed_column "
>>
>End Select
>>
>>
>End Sub
>>
>>
>Now, unerlying dataset.datatab le(0).categoryI D is indeed changed but
>databoun d textbox control remains the same.
>>
>>
>>
>How can I force databinding.upd ate from dataset/datatable?
>>
>>
>>
>Thanks,
>>
>>
>>
>Vlado
>>
>>
>
>
Did you *try* the BindingSource? Because if you use one, and update the
underlying data source, the changes will be reflected on the bound
controls.
I've never used the Binding Manager; I always use a BindingSource because
it's to nifty. Give it a try, and let me know if it works.
Robin S.
Ts'i mahnu uterna ot twan ot geifur hingts uto.
-----------------------------------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:IZ******** *************** *******@giganew s.com...
Robin,
I'm using Column_Changing mostly to validate input.
In this case, Column_Changing should change different column depending on
current column's value.
I know about BindingSource and I'm using BindingManager but that's on
form level.
I didn't find a way to force databinding update from a datatable except
as a workaround with raising Event as described.
Also, I do use n-tier model but Business and Data tier is contained in
one layer (Datasets/Datatable). All the validation/ updating datasource
happens here. This is acceptable scenario for us as we don't anticipate
having database source other than MSSQL and don't have problem with
BusinessObjects and DataLayer not being loosely coupled.
Again, the only problem is how to force Databinding, EndCurrentEdit from
Datatable.
"RobinS" <Ro****@NoSpam. yah.nonewrote in message
news:Fr******** *************** *******@comcast .com...
>Why are you using the Column_Changing events? Just a masochist? In my
experience, events never work the way you think they should in .Net, or
in the order you think they should.
Anyway, if I understand what you're doing, you're changing the data
source and the change is not reflected in the data displayed in the
controls on the screen that are bound to that data source.
Have you checked out the BindingSource? It is an intermediary between
your controls and your data source, and immediately reflects any changes
made to the data source in the controls. To push it the other way, you
invoke EndEdit. Then of course, you have to call Update on your adapter
to push the changes down to the data source.
So you add a Binding Source (add the component to your form from the
Data toolbox).
Set the data source of it to your data table.
myBindingSource .DataSource = myDataTable
Then bind your controls to the BindingSource.
myTextBox.DataB indings.Add(new Binding("Text", _
myBindingSource , "CompanyNam e", true))
myGrid.DataSour ce = myBindingSource
See if that gets you anywhere. And answer my question at the top; maybe
I can recommend another solution.
I use the n-layer model, so all of the data I display on the screen is
defined in Classes. I capture changes to them when the Property value is
modified.
Robin S.
-------------------------------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:ka******* *************** ********@gigane ws.com...
>>Still need an answer.
I made a workaround by creating an event under datatable and form
subscribes to it and calls BindingManager. EndCurrentEdit but would like
to know if there's another way.
Thanks,
Vlado
"RobinS" <Ro****@NoSpam. yah.nonewrote in message
news:eO****** *************** *********@comca st.com...
Did you figure out the answer to this, or are you still hanging?
Because I have a pretty good idea, if you still need an answer...
Robin S.
---------------------------
"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
news:rp***** *************** **********@giga news.com...
VB.Net 2005 and Datatable/TableAdapter.
>
"RobinS" <Ro****@NoSpam. yah.nonewrote in message
news:9a**** *************** ***********@com cast.com...
>Which version of .Net are you using? 2003 or 2005?
>>
>Robin S.
>------------------------
>"Vlado Jasovic" <vladoDOTjasovi cATexcelleincDO Tcomwrote in message
>news:4L*** *************** ************@gi ganews.com...
>>Hello,
>>>
>>I'm using typed dataset for databinding to windows controls and I'm
>>having some problems.
>>>
>>I'm trying to move all business logic to datatable column_changing
>>events and the problem that I'm having is when I change some other
>>column, control value doesn't update immediately until I call
>>endcurren tedit on bindingmanager which doesnt happen until user
>>click update button.
>>>
>>Here's my problem:
>>>
>>Private Sub BusinessPartner DataTable_Colum nChanging(ByVal sender As
>>System.Ob ject, ByVal e As System.Data.Dat aColumnChangeEv entArgs)
>>Handles Me.ColumnChangi ng
>>Select Case e.Column.Column Name
>>>
>>Case Me.dbaColumn.Co lumnName
>>>
>>Me(0).cat egoryID = "changed_column "
>>>
>>End Select
>>>
>>>
>>End Sub
>>>
>>>
>>Now, unerlying dataset.datatab le(0).categoryI D is indeed changed
>>but databound textbox control remains the same.
>>>
>>>
>>>
>>How can I force databinding.upd ate from dataset/datatable?
>>>
>>>
>>>
>>Thanks,
>>>
>>>
>>>
>>Vlado
>>>
>>>
>>
>>
>
>
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