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Well, firstly if it DID open a console window (and it won't), it would be on the server where you are running IIS, but most importantly, you CANNOT run a console app from a web page. It just cannot be done, otherwise there would be even more viruses than there are.
Bob
Ashfield Consultants Ltd
Proud to be a 2009 Code Project MVP
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Oh, but it DID open a console window - on the server, and on a different desktop than the one you see when you login on the server.
You cannot launch a console window on the client side from an ASP.NET application.
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Ok I sort of understand how it works now.
I've just tested and it seems like it is running the external application(just not showing the console window and I understand why it wont show it)
Sorted. Many thanks guys.
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Hi folks,
I have created an app which takes a SQL table from a SQL 2005 server (separate from the machine running the application) queries it in some nice ways and generates an Excel spreadsheet with the required data.
The problem I have is that when I publish the App and get another machine to install it using the "setup" file created, it wants to download and install:
.Net Framwork 3.5
SQL 2008 Express edition
Both take ages to download and install and I don't see why the SQL Express is required.
Can I stop this process from happening as part of the install. Are they BOTH necessary??
Just to point out, AFAIK there is definitely no requirement for SQL 2008 Express to be installed on the client, the app just uses a connection string to connect to the remote database and queries are passed as strings..
Thanks
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So, what did you do to create the installer??
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Morning....
I didn't do anything...
You click on Builds, then Publish.. You select a path and then whether the clients will want automatic updates and then that it...
The setup files appear in the designated folder, the client runs them and then get prompted to install .Net 3.5 and SQL Express 2008....
Are these components defined in the code somewhere, or when the build is completed?? As it doesn't appear obvious.
As a side note, the application was designed and tested using connections to SQL Express (Locally installed), but then the connection strings were changed to use SQL 2005 (full vers)
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nhsal69 wrote: then Publish.. You select a path and then whether the clients will want automatic updates
That's what I thought. VS Express is coming up with the dependanies itself.
I don't use the Express Editions, but in the full versions you can open the Project Properties dialog and there is a Publish tab in there. Clicking on that, you get a page that lists a bunch of information about how the project is, obviously, published, with a button labeled Prerequisits. Clicking on that button, you get a dialog that lists a of items that the installation will depend on being installed. On mine, I can just clear the dependancies I don't need, close the dialogs and re-publish the app.
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It's resolved now...
I copied the entire Form1.vb and form1design.vb etc to notepad, created a new project and then pasted the code back into the new project..
This appears to have resolved the problem, I'm guessing that there must have been some residual "reference" somewhere which forced VB Express to require the above a pre-req, even tho they weren't utilised in the code...
thanks for you thoughts anyway...
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I m doing a package in that MS Comm is using for data Receiving and sending.
I connected to machine and check communication it is working properly in VB and VB.NET.
If i short cable the package working in vb properly but in VB.NET OnComm event not working(Event not Enable). If i change Buad Rate then Junk value is comming and OnComm event enabled).
How can i solve this Problem.
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You and we can help solve this problem if you reword your question to something that makes sense.
You lost me with what you posted!
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I would like to output a decimal number and have the output routine
do the rounding for me. That is, I do not want to have to call the
routine Math.round. Please consider the following code fragment:
Console.WriteLine("Student {0} as a GPA of {1}", _
Name, gpa )
In this case, the variable gpa is of type decimal. I want to modify my format
string so that gpa will be rounded to two decimal places. Is there a way to
do this?
Thanks
Bob
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As was posted,string formatting enables you to display just the number of decimal places you require, rounding is a different matter. unless you are prepared to write your own rounding algorithm (not difficult, but tedious and slower than any built in function) then what is wrong with Math.Round? It does what it says on the tin, and it's in the System namespace and therefore unlikely to cause any slowdown due to loading excessive extraneous assemblies.
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You can use the Format() function:
Console.WriteLine("Student {0} as a GPA of {1}", _
Name, Format(gpa, "0.00"))
I don't speak Idiot - please talk slowly and clearly
'This space for rent'
Driven to the arms of Heineken by the wife
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Hi everyone,
would like to import data from an excel table into a SQL table. The problem is that the data from only one Excel table has to be imported into 3 different tables of the same sql-database. So the main problem in my eyes is to associate every excelcolumn to the matching column of one of the trhee diffferent sql-tables. Of course this has to be done manually by the user. I could immagine two listboxes on a form. First-one for the excelcolumns (source) and anotherone for the sqlcolumns(destination) A third listbox could display the columns the user put together.
I have already managed to get the excel-data displayed in a datagridview without opening the excelfile with this code.
oAdapter = New System.Data.OleDb.OleDbDataAdapter( _
"SELECT * FROM [" & strSheetName & "]", OleDbExcelConn)
thanks in advance,
Jeiss
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Why not select * to a data set, get the column names and do it yourself if you know where they should map up to? You could use LINQ or call a bunch of queries to load the data. Alternatively create a stored procedure that selects * into, processes it, and then frees the temporary table if you use one.
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Hi Ted2102,
i suppose that your suggested solutions would do for an excel file with known columnnames and a constant number of columns. But that's not my case. The files i want to be able to import will not always have the same number of columns and their columnames will change from file to file. The only thing these files have in common is that they will contain contact informantions, like name, address, telephonenumber... a.s.o. That's why i wanted to be able to assign the columns of the Excel-file manually (in the listboxes of the form) to the ones of my SQL database.
I'm sorry for your efforts in helping me, but in the mean time the situation has changed and i have found a nice code snippet which does the kind of work i need.
As a beginner in VB i would like to progress in programming. And that's why i think it would be more important to practice a little bit with the technics used in this snippet. So my new question is now: Does anybody have a link to a good tutorial about learning "List(of Type)" and about "LINQ-queries" for beginners?
Any link or code-snippet would be appreciated.
Thanks for your help
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Unfortunately, I have not found an ideal reference yet. I only found some documentation on a Microsoft website so far.
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Hi Ted2102,
never mind. The documentation from Microsoft is not that bad. But there are not really enough easy code examples. They tend to explain everything only once, showing only one example. All that i can tell by now is that working with linq seems to be much more efficient.
By the way i discovered a pretty well-filled collection (not a collection in the Visual basic sense) in a separate CodeProject Forum.
Last but not least, don't bother about the continuously changing name under my messages. I only experienced little logon problems.... But everything should be fine now. 
Anyway, thanks you for your help.
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Ask this in the ASP.NET forum. You're question is specific to the functionality of the GridView control, not VB.NET.
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Thanks I wasn't sure which one to ask in.
Carolyn
If you can’t have fun at work, then why go to work?
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I have a form that displays a list of records in a DataGridView. The recordset in question is about 9,000 records. I know that is a lot but is required by the application.
The problem I am experiencing is the form closing. I call the dispose methods of some class level variables which slows the close down quite a bit. I have seen it take anywhere from 10 seconds to 2+ minutes. This is a hinderence to the users of the application. I have written some Debug.Writeline() statements with timestamps to see how long each dispose call is taking. The slowdown is on my unfiltered datatables which are bound to the DGV combobox columns. A filtered version is bound to each individual cell that is edited but after the edit the original unfiltered datatable is bound to the cell again. The unfiltered tables only contain 20 or so records but are taking 8+ seconds minimum to clear and dispose compared to the milliseconds it is taking all of the other tables.
Here is my current iteration of the close (please note that the original call was only to dispose of the _Utilities object, I have added the other calls to try tracking down the issue):
uxRecords.Clear()
uxRecordsBindingSource.DataSource = Nothing
uxRecordDataGrid.DataSource = Nothing
uxRecordDataGrid.Rows.Clear()
CType(uxRecordDataGrid.Columns("uxVersionNameGrid"), DataGridViewComboBoxColumn).DataSource = Nothing
For Each versionNameCell As DataGridViewComboBoxCell In CType(uxRecordDataGrid.Columns("uxVersionNameGrid"), DataGridViewComboBoxColumn).Items
versionNameCell.DataSource = Nothing
Next
CType(uxRecordDataGrid.Columns("uxDepartmentNameGrid"), DataGridViewComboBoxColumn).DataSource = Nothing
For Each departmentNameCell As DataGridViewComboBoxCell In CType(uxRecordDataGrid.Columns("uxDepartmentNameGrid"), DataGridViewComboBoxColumn).Items
departmentNameCell.DataSource = Nothing
Next
CType(uxRecordDataGrid.Columns("uxSizeGrid"), DataGridViewComboBoxColumn).DataSource = Nothing
For Each sizeCell As DataGridViewComboBoxCell In CType(uxRecordDataGrid.Columns("uxSizeGrid"), DataGridViewComboBoxColumn).Items
sizeCell .DataSource = Nothing
Next
_Utilities.Dispose()
The _Utilities.Dispose call disposes of each table and that is where the slowdown is. Everything up to that call occurs within the same second.
CleaKO
"Now, a man would have opened both gates, driven through and not bothered to close either gate." - Marc Clifton (The Lounge)
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Why are you calling Dispose on your DataTables? You don't have to unless you've created your own DataTable objects and there is stuff that needs to be freed/done before your DataTable object is destroyed.
The tables will get Destroyed/Collected by the GC when they go out of scope automatically. Unless you have a valid reason to, by default, there is no need to call Dipose on DataTables.
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The DataTables that I am disposing of are instantiated at the class level for specific data. It is not the DataSet bound DataTables that I am disposing of, it is those individual datatables. Didnt I have a discussion with you a few years ago where you said to dispose of anything that implements IDisposable?
CleaKO
"Now, a man would have opened both gates, driven through and not bothered to close either gate." - Marc Clifton (The Lounge)
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When I get this project done we are upgrading to 2008. 
) This is on an asp.net datagrid on an aspx form - not a windows form. Is there a way to get this information? I can see the _RowID in the watch window but I don't know how to access it from code. I have tried searching on Google and I have found nothing that explains how to do it in 2003. I don't want to search or limited the datagrid. I just want to jump to the page it's on and highlight it.