Visual Basic

Re: Create XL sheet or CSV from vb.net

26-Aug-04 18:36

I can't test this with your data source of course on my end, and you'll have to de-bug it over there too, but it should give you an idea of how I would go about getting it to go.

You could call somthing like this on your return from GetClientView with your DataTable dt.

Private Function OpenWorkbook(ByVal dt As DataTable)
Dim oExcel As New Excel.Application
Dim oBook As Excel.Workbook
Dim oBooks As Excel.Workbooks
Dim oSheet As Excel.Worksheet
Dim oSheets As Excel.Sheets
Dim oCells As Excel.Range
Dim dr As DataRow
Dim ary() As Object
Dim iRow As Integer, iCol As Integer

'Start a new workbook in Excel.
oExcel = CreateObject("Excel.Application")
oBook = oExcel.Workbooks.Add
oBook = oBooks.Item(1)
oSheets = oBook.Worksheets
oSheet = CType(oSheets.Item(1), Excel.Worksheet)
oSheet.Name = "First Sheet"
oCells = oSheet.Cells
'Output Column Headers
For iCol = 0 To dt.Columns.Count - 1
oCells(2, iCol + 1) = dt.Columns(iCol).ToString
Next
'Output Data
For iRow = 0 To dt.Rows.Count - 1
dr = dt.Rows.Item(iRow)
ary = dr.ItemArray
For iCol = 0 To UBound(ary)
oCells(iRow + 3, iCol + 1) = ary(iCol).ToString
Next
Next
'Save the workbook and quit Excel.
oBook.SaveAs(Application.StartupPath & "Book1.xls")
oSheet = Nothing
oBook = Nothing
oExcel.Quit()
oExcel = Nothing
GC.Collect()
End Function

Note:
Don't forget to add the Com reference to Excel10 in your Solution Explorer.

partt27-Aug-04 6:19

partt

27-Aug-04 6:19

Thank you for your help!

Playing .wav in VB .NET, with notification

ckoverman25-Aug-04 8:40

ckoverman

25-Aug-04 8:40

I'm pretty new to VB, .NET, and windows in general. I'm trying to write a simple app (VB .NET) that plays a wav file and gets notified when the playing is complete. I've been trying to use MCI with a callback function, etc. but I can't get it to work. Does anybody have any sample code for doing this in .NET? Is using MCI the best approach? Would it be better to use windows media player or directX, or ...?

thanks

Re: Playing .wav in VB .NET, with notification

Anonymous25-Aug-04 16:27

Re: Playing .wav in VB .NET, with notification

25-Aug-04 16:27

Mentalis has a multimedia class I like to use it's more in the Intermediate catagory but, you may want to give it a look at:

http://www.mentalis.org/soft/class.qpx?id=1

Aaron Eldreth26-Aug-04 13:25

Aaron Eldreth

26-Aug-04 13:25

I like the Mentalis media a lot. I've used it several times previously and it works pretty good for me.

Clickety[^]

Aaron Eldreth

TheCollective4.com
My Articles

I hereby boycott this poll. Really....
- Leppie

Best method for pulling and displaying multiple count queries as an aspx page??

cavall25-Aug-04 6:57

cavall

25-Aug-04 6:57

I have about 6-10 different moderately complex queries that are returning a count.

I am wanting to figure out the best, most efficient method for running those queries and displaying the counts either in a table or a datagrid type view.

Currently, I have a function that gets all the SQL Commands that I need and places them in and array.

I setup a data adapter and fill a separate table on a dataset for each Count query I have.

TO display I set a table's specific cells to show the dataset.tables("whatever").row(0).Item(0)

It seems to take quite a long time for this method....

Does someone know something better??
I am still a beginner so any advice would be helpful.

Thanks
cavall

"Nothing is at last sacred, but the integrity of your own mind."
"What lies behind us and what lies before us are nothing compared to what lies within us." - Ralph Waldo Emerson

Re: Best method for pulling and displaying multiple count queries as an aspx page??

Dave Kreskowiak25-Aug-04 8:01

Using ActiveX in Visual Basic to connect to MATLAB

25-Aug-04 8:01

From your description, is would appear that 99% of the time it takes to come up with the final result is being taken up by the SQL queries themselves. The code to put the final table with the results is nearly nothing. If these queries are static, meaning you always use the same set of queries the same way, then you might want to look into have the SQL Server run a stored procedure that runs all of your queries for you and returns a small table with the results you want. Then, you would only have to write code to handle the returned table of results, bind your datagrid to it, and not worry about dataset.tables("whatever").row(0).Item(0).

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

murphypa25-Aug-04 4:50

murphypa

25-Aug-04 4:50

I am trying to connect to MATLAB trough a Visual Basic GUI progam. I found the documentation on ActiveX for MATLAB, and it had a very simple example in VB. However, when i try to run this simple execution, i get an error.

Code:Dim Matlab As Object
Dim res As String

Set Matlab = CreateObject("Matlab.Application")
res = Matlab.Execute("surf(peaks)")

Error: ActiveX component can't creat object
this occurs at the the set Matlab line.
Any suggestions? I am far from a pro at programing. Are there better examples of connecting VB to MATLAB out there? I couldn't find one. Or any better suggestions on how to go about connecting to MATLAB? (I learn best from examples)

Thank you!!!!!

Re: Using ActiveX in Visual Basic to connect to MATLAB

Purple Monk25-Aug-04 5:19

Purple Monk

25-Aug-04 5:19

Can you not add a reference to the application in the project references.

Then you should be able to address it through

Dim oMatlab as new Matlab.application

oMatlab.Whatever

if the reference is not there to be added, or if it is one of those inaccessible ones i'm not sure what you could do.

What it Matlab by the way?

"Small Pink Cheese"

Re: Using ActiveX in Visual Basic to connect to MATLAB

murphypa25-Aug-04 6:04

murphypa

25-Aug-04 6:04

That does not seem to be working either. it won't tatke matlab.application as an argument.

Matlab is a powerfull program used alot in the sciences. It has very powerfull computaional abilities. It can also be use as a programing language to develop prgrams for things such as signal processing and control systems.

I still need some information on how to link Visual Basic to MATLAB. My main purpose for this is to use Matlabs graphing capabilites, because the ones in VB are horrible.

Also, it anyone knows how to write a .MAT file directly from Visual Basic, that would be just as helpful!!

Re: Using ActiveX in Visual Basic to connect to MATLAB

Dave Kreskowiak25-Aug-04 7:45

Re: Using ActiveX in Visual Basic to connect to MATLAB

25-Aug-04 7:45

This may seem like a dumb question, but if the CreateObject call fails, I have to ask is MATLAB installed on your development machine? And if there is an SDK available for it, is that installed also?

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

murphypa25-Aug-04 8:21

murphypa

25-Aug-04 8:21

MATLAB is installed and i'm not exactly sure what an SDK is. I am not a "programmer", i'm an entry level electrical engineer, with minimal programing experience. I am having alot of trouble with this problem, becasue i don't know much about the intricate details of different programs. I just want to get VB and MATLAB to connect! please help

Re: Using ActiveX in Visual Basic to connect to MATLAB

Anonymous25-Aug-04 6:36

Re: Using ActiveX in Visual Basic to connect to MATLAB

25-Aug-04 6:36

Try here.

http://www.mathworks.com/access/helpdesk/help/toolbox/combuilder/examples26.html

Anonymous25-Aug-04 6:42

Flash player in a C# application

25-Aug-04 6:42

One other note of Interest,
COM components from the Matlab for Excel version
will not work in VB.Net.

Member 130484924-Aug-04 22:17

Member 1304849

24-Aug-04 22:17

I have to play flash movies (.swf) files inside a C# application. The problem is I need an event to tell me when the playing of the file is complete, which the Shockwave Flash Control imported through ActiveX is not offering. Am I missing something on the Shockwave Flash Control or am I using the bad tool?

Any help in this matter will be much apreciated.

Re: Flash player in a C# application

Dave Kreskowiak25-Aug-04 3:38

Re: Flash player in a C# application

25-Aug-04 3:38

The Flash ActiveX control only fires three events, FSCommand, OnProgress, and OnReadyStateChange. The last one is probably the one your looking for. I think it will pass you a single int value:

0 - Loading
1 - Uninitialized
2 - Loaded
3 - Interactive
4 - Complete

If you get the Complete value, I THINK(!) the movie might be done playing.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Dave Kreskowiak25-Aug-04 3:40

Printing in 136 column wide mode

25-Aug-04 3:40

By the way, This is teh VB Forum, not C#.

Cross posting in multiple forums is usually frowned upon.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Member 132035224-Aug-04 21:29

Member 1320352

24-Aug-04 21:29

Can I print by using 136 column wide printing in Visual Basic.NET? I want to print to A4 but to specify a row-column (fixed character width) rather than pixel to specify x-y coordinate to print. In PrintDocument fonts are not in fixed width and normal printdocuments graphics does not do my job. I have to print to some speedy dot printers some does not have graphical methods.

What the peoblem is that I used the DrawString and measureString methods and a graphical printing. It works fine with new printers but majority of my customers has old dot-matrix printers. Especially in win98 it prints a big SPAGETTİ or NOTHING Frown | :(

I want to do a raw text printing. Printers has a wide mode printing option. I want to tell printer that this is a wide mode (wide mode is 136 columns while normal mode is 80 columns).

There is a famous article Microsoft Knowledge Base Article - 322090 HOW TO: Send Raw Data to a Printer by Using Visual Basic.NET. But the code inside does not work in win98.

I need immediate help. Thanks...

Dave Kreskowiak25-Aug-04 3:23

25-Aug-04 3:23

What is the problem that your having with the code? What are the errors? The code will work with Win98, but it may take a little modification to do so.

For instance, since Unicode support on anything other than an NT/2000/XP/2003 is questionable, you can have DLLImport hunt down the correct version of the imported functions without you having to guess at which version is available by making the following changes:

* Make sure that the EntryPoint names DON'T end in W or A.
* Change the CharSet option to CharSet.Auto.
* Change the ExactSpelling option to False.

You might want to start with this:

    <DllImport("winspool.Drv", EntryPoint:="OpenPrinter", _
       SetLastError:=True, CharSet:=CharSet.Auto, _
       ExactSpelling:=False, CallingConvention:=CallingConvention.StdCall)> _
    Public Shared Function OpenPrinter(ByVal src As String, ByRef hPrinter As IntPtr, ByVal pd As Long) As Boolean
    End Function
 
    <DllImport("winspool.Drv", EntryPoint:="ClosePrinter", _
       SetLastError:=True, CharSet:=CharSet.Auto, _
       ExactSpelling:=False, CallingConvention:=CallingConvention.StdCall)> _
    Public Shared Function ClosePrinter(ByVal hPrinter As IntPtr) As Boolean
    End Function
 
    <DllImport("winspool.Drv", EntryPoint:="StartDocPrinter", _
       SetLastError:=True, CharSet:=CharSet.Auto, _
       ExactSpelling:=False, CallingConvention:=CallingConvention.StdCall)> _
    Public Shared Function StartDocPrinter(ByVal hPrinter As IntPtr, _
       ByVal level As Int32, ByRef pDI As DOCINFOW) As Boolean
    End Function
 
    <DllImport("winspool.Drv", EntryPoint:="EndDocPrinter", _
       SetLastError:=True, CharSet:=CharSet.Auto, _
       ExactSpelling:=False, CallingConvention:=CallingConvention.StdCall)> _
    Public Shared Function EndDocPrinter(ByVal hPrinter As IntPtr) As Boolean
    End Function
 
    <DllImport("winspool.Drv", EntryPoint:="StartPagePrinter", _
       SetLastError:=True, CharSet:=CharSet.Auto, _
       ExactSpelling:=False, CallingConvention:=CallingConvention.StdCall)> _
    Public Shared Function StartPagePrinter(ByVal hPrinter As IntPtr) As Boolean
    End Function
 
    <DllImport("winspool.Drv", EntryPoint:="EndPagePrinter", _
       SetLastError:=True, CharSet:=CharSet.Auto, _
       ExactSpelling:=False, CallingConvention:=CallingConvention.StdCall)> _
    Public Shared Function EndPagePrinter(ByVal hPrinter As IntPtr) As Boolean
    End Function
 
    <DllImport("winspool.Drv", EntryPoint:="WritePrinter", _
       SetLastError:=True, CharSet:=CharSet.Auto, _
       ExactSpelling:=False, CallingConvention:=CallingConvention.StdCall)> _
    Public Shared Function WritePrinter(ByVal hPrinter As IntPtr, _
       ByVal pBytes As IntPtr, ByVal dwCount As Int32, ByRef dwWritten As Int32) As Boolean
    End Function

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Member 132035225-Aug-04 4:27

Member 1320352

25-Aug-04 4:27

I get no error. It just does not print. Do you have any knowledge about printers wide mode (136 columns)?

Dave Kreskowiak25-Aug-04 5:13

25-Aug-04 5:13

It's been a VERY long time since I played with a dot matrix printer, but yes I do know how the command set for them works.

Have you tried the modifications to the code that I posted?

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Member 132035228-Aug-04 2:12

Member 1320352

28-Aug-04 2:12

I had no time to try your modification because of other deadlines. I will try it out. Thanks a lot.

Anonymous25-Aug-04 7:43