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Rheal_Notes wrote:
When the user hits the run button, I set it to true and then do the Fill... but it doesn't display until after the SP returns, 10 seconds later, with the data.
When you set the visible property the system will fire an event to say that the visible property has changed. However the events are only processed when the application is about to become idle, which your application is not about to do.
Off the top of my head: You could call DoEvents() after setting the visible property to get the paint event to get processed. Alternatively you could force a refresh by calling Refresh() on the form.
Does this help?
"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar
The Second EuroCPian Event will be in Brussels on the 4th of September
Can't manage to P/Invoke that Win32 API in .NET? Why not do interop the wiki way!
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Colin,
Awesome! A most excellent answer. I tried them both and either one worked perfectly!
I cannot thank you enough, much appreciated!
Cheers,
- Andrew
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Aargh. Reentrancy is not a fun thing. Steer well clear of DoEvents - IMO, it's dangerous.
The OP should be using a function called by a worker thread to perform the SQL query, then use Control.Invoke to get back on to the UI thread to update the UI. You can use the thread pool in .NET by calling ThreadPool.QueueUserWorkItem, passing in a WaitCallback delegate.
I don't think what you say about events is true in .NET. It was in VB6, IIRC, but events are called directly in .NET. What the poster is seeing is simply that the thread isn't processing the Windows message queue (since it's blocked doing the stored procedure call) and so isn't getting the WM_PAINT message to repaint itself. If the user brings up a window that covers the UI and then brings this app up again, whole areas won't be redrawn on some operating systems (XP caches some current displays, but IIRC not invalid areas).
Leave the UI thread solely for user interaction - do all processing on another thread, unless you're sure that it cannot possibly take less than about 0.3 seconds. More than that is noticeable delay.
If you do need to update a control synchronously, call Update.
Stability. What an interesting concept. -- Chris Maunder
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Mike Dimmick wrote:
Steer well clear of DoEvents - IMO, it's dangerous
A few months ago someone shot me down for suggesting Refresh() and "suggested" DoEvents() instead. So, to play it safe I suggested both ways. I think Bart Simpson said it best "Your damned if you do and your damned if you don't"
However, I do agree that if there are other events waiting it can go off and do some weird stuff.
Mike Dimmick wrote:
I don't think what you say about events is true in .NET. It was in VB6
I've never used VB6 so I don't know. I come from an C++/MFC background.
Mike Dimmick wrote:
, but events are called directly in .NET. What the poster is seeing is simply that the thread isn't processing the Windows message queue
Looking back at my post, it would appear that I misused the terminology somewhat. But, like I said "events[*] are only processed when the application is about to become idle"
[*] events here are the ones that are fired off in the Application.Run method that come from the Windows Message Queue.
"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar
The Second EuroCPian Event will be in Brussels on the 4th of September
Can't manage to P/Invoke that Win32 API in .NET? Why not do interop the wiki way!
My Blog
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Mike,
Thanks for your reply. I think that once I understand what you're trying to tell me, I'll be able to have a lot more fun.
I was looking at an example here on the The Code Project:
Proper Threading in Winforms .NET
By Shawn Cicoria
http://www.thecodeproject.com/csharp/winformthreading.asp
but I'm still having trouble wrapping my mind around it.
I don't think I have any trouble with the concept or anything, but the exact syntax and calling procedures are still confusing me.
I'll keep at it.. I'm definitely enjoying this Visual Studio thing. 
While Colin's suggestion works (thanks again Colin) .. I can still only display a static message... To the user, I don't think it will make any difference at all.. but I think it would be a lot more fun to put up an animated icon or busy-bar or something... and hey, if it's safer, and it'll make my code more re-usable down the line, all the more reason to keep playing. I'm sure I'll figure it out eventually.
In the mean time, any pointers to other sample code or tips or whatever are always much appreciated.
Thanks again to both of you.
Cheers
- Andrew
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I have to transfer a data base from old to new one in batch.
I am working with the Data transformation services at the sql server.
How can i run/excute a dts package from a stored procedure or from the query analyzer? .
Thanks in advance
Be Good...
Dudi
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Any master in SQL Queries
Help: Complicated query
I have a table, as similar to this
ID Status Deleted
1 Repeat y
2 Repeat y
3 Repeat N
4 Repeat N
5 sUBMIT y
6 sUBMIT y
7 sUBMIT N
8 sUBMIT N
9 Pending Y
.
.
.
.
from the table like this i have to retrive distinct records where
delted = N
eg: in the above table after executing query result should be
ID Status Deleted
3 Repeat N
7 SUBMIT N
9 Pending Y
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irshu wrote:
from the table like this i have to retrive distinct records where
delted = N
eg: in the above table after executing query result should be
ID Status Deleted
3 Repeat N
7 SUBMIT N
9 Pending Y
The query does not seem to be complicated, but it is not clear what you want. You said "deleted = N" and your result set has a record with "deleted = Y". Please explain.
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say if i have records with same status field and with deleted ='N' and delted = 'Y' then i should select one record with deleted = 'N' and i should not select deleted = 'Y'
and say if i have records with the same status and with deleted ='y' and No records with delted='N' with the same status then i should select delted ='Y'
and one more thing in this is, ID is the primary Key
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Wow, that is complicated, but not impossible. Here is the SQL statement that will get what you want (using union and nested query):
SELECT min(ID), Status, 'N'
FROM myTable
WHERE Status in (select distinct Status from myTable where Deleted = 'N')
GROUP BY Status
UNION
SELECT min(ID), Status, 'Y'
FROM myTable
WHERE Status in (select distinct Status from myTable where not Status in (select distinct Status from myTable where Deleted = 'N'))
GROUP BY Status;
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Oops, the following is simpler:
<br />
SELECT min(ID), Status, 'N'<br />
FROM myTable<br />
WHERE Status in (select distinct Status from myTable where Deleted = 'N')<br />
GROUP BY Status<br />
<br />
UNION <br />
<br />
SELECT min(ID), Status, 'Y'<br />
FROM myTable<br />
WHERE not Status in (select distinct Status from myTable where Deleted = 'N')<br />
GROUP BY Status;<br />
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Thank you very much for helping in this regard.
with regards
irsh
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Thank you very much for helping in this regard.
with regards
irsh
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Thank you very much for helping in this regard.
with regards
irsh
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Does MS SQL Server support dates in 'mmyy' format?
If so, how??
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Left(Convert(char(6),getdate(),12),4)
michanne
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Thanks...
But i want the data to retain datetime datatype, so that i can apply datetime functions to the data.
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Hi,
I have an ACCESS DB populate by an automation.
I am looking for reading this database and populate it in a sql database.
For the first time, when I reading the ACCESS DATABASE, I using DTS WIZARD in enterprise Manager for create the same ACCES DB in an SQL DATASE.(I would like to use a STORPROC for this).
After I would like to use TRIGGER or SQL AGENT, ... for detecting that new records were inserted in the ACCESS DB.
And populate new records to the appropriated TABLE in SQL DB.
If you have any suggestions for my question it is great.
youssef
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I'm not sure I quite understand what you are trying to achieve. Why are you continuing to have an Access database? Why not migrate it all to SQL Server and leave it in there? If you need to access the data in Access then why not link the tables back from SQL Server?
"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar
The Second EuroCPian Event will be in Brussels on the 4th of September
Can't manage to P/Invoke that Win32 API in .NET? Why not do interop the wiki way!
My Blog
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Thanks for your answer.
I can't change the DB because it isn't my Automation and the customer wont migrate to SQL Server (probably for license).
So, I used Linked servers in Entreprise Manager.
But How can I do for reading each table with a storproc and how can I do for create a Linked servers by storproc because the filename of the log change each day ?
youssef
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youssef wrote:
the customer wont migrate to SQL Server (probably for license)
cough, MSDE, cough cough....
"Now I guess I'll sit back and watch people misinterpret what I just said......"
Christian Graus At The Soapbox
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So, I find all of my questions.
Now I would like to use a TRIGGER for populate with my Linked server (ACCESS) my Table in SQL.
How can I do or is it possible ?
youssef
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Hi,
I have an ACCESS DB (.mdb) generate by an Automation.
Now, I would like to:
1/ Copy all datas from the ACCESS DB in my SQL Database.
I using DTS. All are working.
But, after copying, I would like at each time a new record is inserted in the ACCESS DB, I copy this Record in my SQL DATABASE (synchronize the SQL DATABASE).
For this, I create LINKED SERVERS for the ACCESS DB (Named LOG).
In my SQL DATABASE, I create a VIEW that read one TABLE from LOG (linked ACCESS DB).
Now, I would like to create a TRIGGER from this VIEW for retrieve each INSERT and copy this insert in my SQL DATABASE.
Please find the CODE below :
CREATE TRIGGER trgLog on [dbo].[VIEW_LOG]
INSTEAD OF INSERT
AS
BEGIN
declare
@Log_Date datetime,
@Log_Input smallint,
@Log_Level smallint,
@Log_Milliseconds smallint,
@Log_Output smallint,
@Log_Panel smallint,
@Log_Response smallint,
@Log_Status smallint
set @Log_Date ='05/07/2004 00:00:00'
set @Log_Input =1
set @Log_Level =1
set @Log_Milliseconds =1
set @Log_Output =1
set @Log_Panel =1
set @Log_Response =1
set @Log_Status =1
exec InsertLog @Log_Date,@Log_Input,
@Log_Level,@Log_Milliseconds,
@Log_Output,@Log_Panel,
@Log_Response,@Log_Status
END
So in this code I Insert a test message after hat a select "insert".
But when I refresh my SQL DATABASE, I see nothing whereas I the ACCESS DATABASE the AUTOMATION insert record.
Can You Help me about that ?
Best Regards
youssef
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How to overcome that? I'm using MFC ODBC classes. I need sometimes to send a prety long statements. Is there a way to lift the limit?
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I don't know, but you should also be aware that the underlying DBMS may also have a statement limit, so even if you do override the ODBC limit, you may still be stuck.
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