CheckBox in a DataGrid and a datatable field

  • Thread starter Thread starter Just D
  • Start date Start date
J

Just D

Hi All,

Does anybody know how to write the following code?

I have a database table with a few columns including: ID [int], "Task"
[varchar], ForceRun [bit]. I need to show the DataGrid on the ASPX page with
these selected fields and allow user to click one or more CheckBox controls
to activate this bit on the database table for a required ID.

I have already added a template column to the DataGrid and I can get the
CheckBox status from this CheckBox for each string. If I click a button
"Apply" on this page I can get a full list of changed items and send a SQL
command to the database to activate these bits. It works, but...

The customer wants this aspx page to be updated automatically, once per
selected time, for example one time per 10 seconds. I think that I have only
two possible ways to do that.

1. I need to read the status of these CheckBox controls from the DataGrid
and create a SQL string to send to the database immediately after changes,
just after the user clicked this control.
2. Wait for the auto refresh and work with the whole DataGrid before the
page is updated. I have this functions but I don't know how to call it
before updating of the page.

I used this tag to reload the page automatically. It works fine.

<meta http-equiv="refresh" content="10">

But it causes a full reload of the page including the datagrid and I can't
get the CheckBox status on Page_Load() because the DataGrid resets every
time on Page_Load(). I think that I need some event to check the status of
these CheckBox controls in the DataGrid before content reloading. But how?
If I go the first way, what event should I use to understand that the user
clicked the CheckBox to work with these changes after the changes have been
done before page refreshing?

Thanks,
Just D.
 
Just D,

I think I would look in to the ItemCreated even on the datagrid. You should be able to access the controls property from each cell. Very creative solution BTW. Did you think about just making a background process to reset these values?


-Calvin Luttrell
ProjectThunder.com
 
Hi Calvin,

Thanks for your answer. Yes, I'm able to get the CheckBox status in every
cell. You can take a look, it was very helpful to write my own code based on
this example:

http://support.microsoft.com/default.aspx?scid=kb;EN-US;320707

But the problem was - I can't get the event when this click happened to
create a SQL command and send to the database automatically, without "Apply"
button as was used in this example. That's a problem for me.

ItemCreated... It's really not like ItemCreated, I just change the status of
the CheckBox control in the cells, I can get all cells with these changes
using foreach like in the example above, but to catch this moment when I
should do that, it's a real problem.

Probably I could use Select/Edit/Cancel ot whatever, it has its own event
that I can catch, but the customer wants to get a CheckBox only.

Thanks,
Just D.
message Just D,

I think I would look in to the ItemCreated even on the datagrid. You
should be able to access the controls property from each cell. Very creative
solution BTW. Did you think about just making a background process to reset
these values?


-Calvin Luttrell
ProjectThunder.com
Does anybody know how to write the following code?

I have a database table with a few columns including: ID [int], "Task"
[varchar], ForceRun [bit]. I need to show the DataGrid on the ASPX page with
these selected fields and allow user to click one or more CheckBox controls
to activate this bit on the database table for a required ID.

I have already added a template column to the DataGrid and I can get the
CheckBox status from this CheckBox for each string. If I click a button
"Apply" on this page I can get a full list of changed items and send a SQL
command to the database to activate these bits. It works, but...

The customer wants this aspx page to be updated automatically, once per
selected time, for example one time per 10 seconds. I think that I have only
two possible ways to do that.

1. I need to read the status of these CheckBox controls from the DataGrid
and create a SQL string to send to the database immediately after changes,
just after the user clicked this control.
2. Wait for the auto refresh and work with the whole DataGrid before the
page is updated. I have this functions but I don't know how to call it
before updating of the page.

I used this tag to reload the page automatically. It works fine.

<meta http-equiv="refresh" content="10">

But it causes a full reload of the page including the datagrid and I can't
get the CheckBox status on Page_Load() because the DataGrid resets every
time on Page_Load(). I think that I need some event to check the status of
these CheckBox controls in the DataGrid before content reloading. But how?
If I go the first way, what event should I use to understand that the user
clicked the CheckBox to work with these changes after the changes have been
done before page refreshing?
Click to expand...
 
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