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i just want to know how you can a form that you already created in a form that created before.
Da Intern
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Please explain yourself better. 
"Blessed are the peacemakers, for they shall be called sons of God." - Jesus
"You must be the change you wish to see in the world." - Mahatma Gandhi
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i have a windows app that runs fine i want to call another app from a menu button i don't know how.................. please help
Da Intern
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If you are wanting to start another process, use Process.Start().
"Blessed are the peacemakers, for they shall be called sons of God." - Jesus
"You must be the change you wish to see in the world." - Mahatma Gandhi
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Process.start() i good if you want to start another app, but you cannot interact with this app after it in an easy way.
You should better create a dll with the functionality from the other program and use it in the new program. .NET remotin is another solution if you want to collabarate with another app. If you want only to start another app use Process.start(), it's the easiest
From Greece:
Dimitris Iliopoulos
dimilio@yahoo.com
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dll im not really famaliar with them so could you help me
Da Intern
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I'm doing some database in C# using MS SQL.
Problem #1:
Everytime i do a connection to my database, i have to copy and paste the code over and over. I heard of a way to put these code in the configuration file, but i don't know how to.
Problem #2:
I also heard of someway(interface, object) allowing me to do SQL query indirectly instead of passing the query string directly into the SqlCommand object. And, again, I don't know how to.
Problem #3:
Is there anyway i can pass in my sql query dynamically(ie, as a varible)?
I just learn C# on my own, and having problem searching for things like this
Please help me out!
THANKS A BUNCH!!!
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You should only need one IDbConnection instance to one database, and you can just reuse it every time (just open and close it).
I am not sure what you mean by indirect query; however I think its good practice to use the interfaces rather than the specific providers as much as possible, as your provider might change. (i.e. IDbCommand cmd = new OldDbCommand("S...).
As for the queries, I keep mine as strings, not as string literals, and have them in a config file. That way I don't need to recompile every time i change a query. It also makes it easy to add on constraints on the query ( cmd.CommandText = selectString + "WHERE Cust = " + custId.ToString()).
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FYI,
Problem #1
Where are you connecting from? Are you connecting from a web service? Windows Form? Asp.net?
Problem #2
Problem #3
Read on on the .NET Documentation. Specifically with the SqlCommandBuilder.. It will automatically generate the SQL queries you require.. Its not as fast, to my understanding, as your own
- danny
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Hi,
I have been building my gui's by hand in my most recent project, and have consistently ran into trouble when trying to size controls. I mimic the form designer code with an InitComponent() method that is run from the constructor, where i create all my controls. In this method, when i try sizing the controls through controls such as:
textBox.Size = new Size(100,30);
or:
textBox.Width = 100;
textBox.Height = 30;
the controls will not be sized. Any thoughts on why they are not sizing properly, or is there another way to do it?
Thanks,
Nikolaj Baer
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Hi,
thanks for the advice. Actaully ResizeRedraw is a protected property, something i can't apply to an instance. However, i kept searching, and found that SuspendLayout() and ResumeLayout() is the proper way to do it.
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Hello,
I am building an application that requires data to be entered into a control that looks like the Data Grid. Basically, it should mimic the functionality of entering data into MS Excel. I know the Data Grid is primarily used to display data binded to a data source, such as a DataSet. Is there any way to display a blank data grid and use it for data entry? If not, what do you experts suggest that I do to get the results I'm looking for?
One possible solution that I came up with was to bind the data grid to the table that the data is destined for. Next, I would add one row of text boxes that would represent each column below the grid. The user could then add the record to the data grid (and underlying table) by typing the details into the the textboxes below the grid, followed by clicking the "Add" button. However, a grid will not appear unless there is data in the underlying table to be displayed. The empty data grid control does not look attractive on a form.
I remember building an application in vb 6.0 where I got around this by placing textboxes over the cells of the data grid control. However, I can't remember exactly how I did this, or if it would even work with the .NET data grid control.
Any help would be greatly appreciated
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you can edit on the datagrid directly (datagrid.readonly = false) without using textboxes in the end of it. If you are writing a windows forms app an empty datagrid is ok, in asp.net things are a bit difficult and i think the idea you said with the textboxes is the best.
to be more easy and more attractive your datagrid study
System.windows.datagridtablestyle and System.windows.datagridtextboxcolumn,
To validate them you can use datatable events rowchanged... or use standard techniques Causesvalidation ....
Good luck, to make a datagrid work perfect needs lot of work
From Greece:
Dimitris Iliopoulos
dimilio@yahoo.com
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Hi,
Is it some one out there who could please help me transelate this C# code to VB.NET?
int vPos=(index <= selectedBand) ? buttonHeight*index : buttonHeight*index+selectedBandHeight;
int height=selectedBand==index ? selectedBandHeight+buttonHeight : buttonHeight;
Thanks,
Richard
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<br />
dim vPos as interger<br />
vPos = buttonHeight * index<br />
if index <= selectedBand then<br />
vPos = vPos + selectedBandHeight<br />
end if<br />
<br />
dim height as interger<br />
height = buttonHeight<br />
if selectedBand=index then<br />
height = height + selectedBandHeight<br />
end if<br />
Something like that?
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So in OnStop I create and start a thread with new Thread(new ThreadStart(funk)), right?
Thread is doing something and then Stop command comes along and naturaly I get OnStop called. Everything is OK so far. I post to my thread a message somehow for it to quit and OnStop returns right away. SCM thinks that everything was ok. But my worker thread has some work to finish before quitting and it may take time. So it continues until it's done BUT magically the service process disappears in about 20 sec after OnStop returned cutting the execution of my thread right in the middle (or so it seems) of a routine. 
How do I avoid that?  I want that thread to finish normaly.
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You are suggesting to have actual worker code in the main thread of a service? Then how would I responds to OnStart and continue at the same time with out a separate thread? I'm new to this - please advise! Also wouldn't SCM complain about being unable to stop service in "timely fashion" if that main thread works however long it needs?
I want sevrice to report back to SCM I'm done (kindof) but executable would stay until it finishes what it needs.
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AAAAAaaaaaaa see! That is not what I need to do. My service onstart begins to do the stuff from database - it doesn't respond to commands. So it lives on it's own (second tread seems natural choice, right?) And it does a very lengthy computations (recognizing images). I can not just interrupt it until it's logiñ permits it.
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Well. That is why second thread is beautiful. I don't have to wait for a lot of stuff before reporting "running". What more interesting is that in C++ (ATL template app let's say) the IS a way to tell SCM - "I'm still shutting down", but not in C# (at least I don't see it anywhere).
I just openned an issue with Microsoft. They said "WOW! You should be proud - you're the first one to report/complain about this". I wish I wasn't really. I'm hoping these is still a way to go around this without .NET SP   .
I may go to C++ service, but I really hate to do that. On the other hand it's going to be a quicker way then to reorganize code developed over past 9 years that now I have to call from service.
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Yeah. Me too. Quick and let's you concentrate on your business logic... except it seems they abstracted a little to much there this time  and now I have to concentrate on the service again.
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You need to wait in your OnStop function until your service has finished shutting down. You might do this with a ManualResetEvent like this:
ManualResetEvent done = new ManualResetEvent(false);
protected override void OnStop()
{
done.WaitOne();
}
Then in your other routine, running on the other thread, just call done.Set(); when you are all done, just before returning.
Burt Harris
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But I already tried even a message box in onstop method. That should've keep it alive for as long as there is the message box, right? Wrong! The process magicaly dissapears in 20 seconds after stop button was hit in SCM and it seem it doesn't metter what I do. The execution of a function just gets cut off right in the middle of a routine. Looks like SCM uses "terminate process" or something...
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In VB6, we had an application which created a connection through a comm port object, and with a winsock client server control, sent data to a handheld device. I was wondering if anyone knew the replacement object for the comm port object, and if the winsock has a replacement. I noticed in passing that sockets seem to be the new communication object, will a socket replace the functionality of both the winsock and comm port control?
Thanks,
Ryan
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I don't there is an exact 'replacement' control for this (not from MS that is), check out the System.Net.Sockets namespace where you will find a Socket class and all kinds of other good stuff.
-Nick Parker
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If you want to use serial port communication in the .NET world you are in trouble. I have tried to do it and needs very very much work because it's not built in and you have to work with win32 with platform invoke, here is an article from msdn that may help you
http://msdn.microsoft.com/msdnmag/issues/02/10/NETSerialComm/default.aspx
if you find something interesting, any tool maybe, please let me know
From Greece:
Dimitris Iliopoulos
dimilio@yahoo.com
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