Visual Basic Discussion Boards

Joshua Quick9-Apr-06 11:32

9-Apr-06 11:32

It won't do this for you.
You have to read the file and output the strings yourself. It's not that hard.
You also have to decide how to handle the file's CarriageReturn/LineFeed characters.

Re: sending serial data using rs232

hackerz839-Apr-06 20:54

hackerz83

9-Apr-06 20:54

how to do it?can you give an example?

Just Do It....

Re: sending serial data using rs232

Joshua Quick9-Apr-06 23:21

Joshua Quick

9-Apr-06 23:21

The "Commport" post above this post shows you how to open a COM port and send strings through it. Here's a link to the solution in case you missed it.
http://support.microsoft.com/default.aspx?scid=kb;en-us;823179&Product=vb6[^]

If you're using VB.NET 2005 (ie: .NET 2.0) then you can use the new System.IO.Ports.SerialPort[^] class.

You can read text from a file "line by line" by doing the following.
(This was taken from MSDN at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cpconReadingTextFromFile.asp[^].)

Try
   ' Create an instance of StreamReader to read from a file.
   Dim sr As System.IO.StreamReader = System.IO.File.OpenText("MyFile.txt")
   Dim line As String
   Do
      line = sr.ReadLine()
      <code>' Output read line to serial port here.</code>
   Loop Until line Is Nothing
Catch E As Exception
   ' Let the user know what went wrong.
Finally
   ' You must close the StreamReader once you're done using it.
   If (Not (sr Is Nothing)) Then sr.Close()
End Try

VB.NET: COM Interop. Sink event to COM Client

mdepaepe8-Apr-06 19:03

mdepaepe

8-Apr-06 19:03

Hello,

I am trying to develop a simple COM Server using VB.NET in order to be called from a VB6 existing application exe.

At build time, I always get an error like:
"COM Interop registration failed. Could not load type EventSource.evtContextWrapper from assembly DotNetServerForComClient."

I have this error as well in W2000 and WXP using VS.NET 2003.

For a basic test, I started from a MS sample and adpted it slightly: I have only one class in a class library for which the assembly is signed:

<Assembly: AssemblyKeyFileAttribute("mykeys.snk")>

Here under is the code of my class.

Any help would be very much appreciated.

------------------------------------------------------

Imports System.Runtime.InteropServices
Namespace EventSource
Public Delegate Sub TestEvtDelegate(ByVal inPar As String, ByRef outPar As String)
Public Delegate Sub TestInEvtDelegate(ByVal inPar As String)

<InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIDispatch)> _
Public Interface evtContextWrapper
Sub TestEvt(ByVal inPar As String, ByRef outPar As String)
Sub TestInEvt(ByVal inPar As String)
End Interface

<ComSourceInterfaces("EventSource.evtContextWrapper, DotNetServerForComClient")> _
Public Class Class1
Public Event TestEvt As TestEvtDelegate
Public Event TestInEvt As TestInEvtDelegate
Private WithEvents myTmr As Timers.Timer
Public Function GetTime(ByVal ShowSeconds As Boolean) As String

Dim nm As Reflection.AssemblyName
nm = System.Reflection.Assembly.GetExecutingAssembly().GetName

If (ShowSeconds = True) Then
Return ".NET server, assembly name =" + nm.ToString + " Time is:" + Now().ToLongTimeString
Else
Return ".NET server, assembly name =" + nm.ToString + " Time is:" + Now().ToShortTimeString
End If
myTmr = New Timers.Timer(2000)
myTmr.Enabled = True
End Function

Private Sub myTmr_Elapsed(ByVal sender As Object, ByVal e As System.Timers.ElapsedEventArgs) Handles myTmr.Elapsed
Dim strOut As String
RaiseEvent TestEvt("Hello", strOut)
MsgBox("Hello " & strOut)
myTmr.Enabled = False
myTmr = Nothing
End Sub
End Class
End Namespace
--------------------------------------------------------

Michel

In Code Behind, What is proper select statement syntax to retrieve the @BName field from a table?

kenn_rosie8-Apr-06 17:04

kenn_rosie

8-Apr-06 17:04

In Code Behind, What is proper select statement syntax to retrieve the @BName field from a table?
Using Visual Studio 2003
SQL Server DB

I created the following parameter:
Dim strName As String
Dim parameterBName As SqlParameter = New SqlParameter("@BName", SqlDbType.VarChar, 50)
parameterBName.Value = strName
myCommand.Parameters.Add(parameterBName)

I tried the following but get error:
Dim strSql As String = "select @BName from Borrower where BName= DOROTHY V FOWLER "

error is:
Line 1: Incorrect syntax near 'V'.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: Line 1: Incorrect syntax near 'V'.

Source Error:

Line 59:
Line 60:
Line 61: myCommand.ExecuteNonQuery() 'Execute the query

Re: In Code Behind, What is proper select statement syntax to retrieve the @BName field from a table?

kenn_rosie8-Apr-06 17:49

kenn_rosie

8-Apr-06 17:49

Sorry: To further clarify
My database table name is borrower and two of the fields are BName and TaxID, I am trying to select a particular borrower (BName) with a taxid OF 767, lets say in this case THE BORROWER IS Bill Jones

I declared the following variables:
Dim strName As String
Dim parameterBName As SqlParameter = New SqlParameter("@BName", SqlDbType.VarChar, 50)
parameterBName.Value = strName
myCommand.Parameters.Add(parameterBName)
Dim strTaxID As String
Dim ParameterTaxID As SqlParameter = New SqlParameter("@TaxID", SqlDbType.VarChar, 15)
ParameterTaxID.Value = strTaxID
myCommand.Parameters.Add(ParameterTaxID)

I inserted the folowing command:

Dim strSql As String = "select BName from Borrower where TaxID= @333-00-1492 "

I get error:
Must declare the variable '@333'.

Re: In Code Behind, What is proper select statement syntax to retrieve the @BName field from a table?

Colin Angus Mackay8-Apr-06 19:09

Colin Angus Mackay

8-Apr-06 19:09

You pass in two parameters but you don't use them in the SQL statement. You then use a parameter (@333) that does not exist.

Maybe somthing like this would work:

SELECT BName from Borrower WHERE TaxID = @TaxID

You can drop the parameter @BName as it is not being used. To get the BName back into your application you can use ExecuteScalar().

"On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question."
--Charles Babbage (1791-1871)
My: Website | Blog

Panel control movement problem

MWashburn8-Apr-06 14:30

MWashburn

8-Apr-06 14:30

I am using multiple dynamically created text box controls placed inside a panel control. I use the panels scrollbar to scroll down and view the data in the textbox's within the panel. It is also feasable that a textbox's size could be larger than the panel is in its height.

Problem is that when a users first clicks on the textbox's data to make an edit for example the panel then auto centers the textbox controls position within the panel. This unwanted control movement moves the text's position and causes undisirable highlighting of a portion of the text as it scrolls past the clicked cursor. Is there anyway to disable this auto control positioning action of the panel control when a control first recieves focus while still preserving the panels scrollbar functionality???

Any help is appreciated,
SBD

How to Capture image from WebCam Or IP Camera

WindDance8-Apr-06 2:12

WindDance

8-Apr-06 2:12

Hi,

I am newbie here.I hope you all can give me some help for the above.

I need to know :

1. Will WebCam store video images captured into a Folder?

2. How to set up a Folder for the WebCam's images captured?

ie : http://domainname/foldername ? is this correct?

If I write a code to retrieve images from the folder, I would only capture the latest image?

Is there any code out there I can use it as reference?

Thanks

How can Remoting From vb.net code

Arag038-Apr-06 1:15

Arag03

8-Apr-06 1:15

I want source code to Remoting

Server - Client

Ahmed

Re: How can Remoting From vb.net code

Colin Angus Mackay8-Apr-06 19:11

Colin Angus Mackay

8-Apr-06 19:11

You are going to have to be clearer about what you are wanting.

Crystal Report Problem

microuser_20008-Apr-06 1:09

microuser_2000

8-Apr-06 1:09

hellow to all ..
i am building a crystal report that have a Boleen fields ..
now i wanna count them , but i wanna only count the true fields ..
it is not working for me how i do it ?
thxx

small error

Amit Agarrwal7-Apr-06 23:39

Amit Agarrwal

7-Apr-06 23:39

Dim id As Integer = dgCustomer.DataKeys(e.Item.ItemIndex)
it gives error

Index was out of range. Must be non-negative and less than the size of the collection.Parameter name: index

why??????

Re: small error

Colin Angus Mackay8-Apr-06 0:01

Colin Angus Mackay

8-Apr-06 0:01

aavesh wrote:
why??????

What is the value of e.Item.ItemIndex?
How big is dgCustomer.DataKeys?

please help how to pass enter

Amarni7-Apr-06 21:08

Amarni

7-Apr-06 21:08

how can i pass enter from Vb.net to other programs, so that i need to copy one line after that i want to pass enter after the line not the ascii code for enter just enter cklick without pressing manually on enter

amarni

Re: please help how to pass enter

Chatura Dilan8-Apr-06 1:00

Chatura Dilan

8-Apr-06 1:00

You can use

AppActivate("Title Of other Application")<br />
        SendKeys.Send("{ENTER}")

Regards,

Chatura Dilan

If at first you don't succeed, try; try again, so that you know
what not to do the next time. The answer is out there.

Datareports in vb6

rais patel7-Apr-06 20:03

rais patel

7-Apr-06 20:03

i want invoice and bill monthly for per customer indiviually using datareports and database msaccess.plz reply.

rais

Re: Datareports in vb6

Vikrant Badhai7-Apr-06 23:17

Vikrant Badhai

7-Apr-06 23:17

Hi Rias,
By executing SQL queries u can get the records for each customer individyally.

Thanx & Regards.

Success is not a Destination,
... But a Journey !!

Repeater Control is not working

Amit Agarrwal7-Apr-06 19:09

Amit Agarrwal

7-Apr-06 19:09

My Repeter control in not displaying the images from databse when i use the following statement.

<asp:image id="Image1" imageurl="<%" container.dataitem%=""> Runat=server>

actuall i want to display all the images from data base along with the price of image.
what should i do?

i'm not getting a point when i give any image path instead of

ImageURL= <% Container.DataItem%> replace ImageURL= "pic.gif"

then it shows no of times this image that i have no record in my database

suggest me.

thanx

Re: Repeater Control is not working

Guffa7-Apr-06 22:46

Guffa

7-Apr-06 22:46

Use the "Ignore HTML" option when you post the message so that your code will be visible.

---
b { font-weight: normal; }

Re: Repeater Control is not working

Amit Agarrwal7-Apr-06 23:12

Amit Agarrwal

7-Apr-06 23:12

actually what i want to do i have a table category
in this a user can upload the images for the category.
now i want to display the all the category information with the image on the home page of the site in a 4 * 4 matrix.

what should i do?

thanx

Re: Repeater Control is not working

Guffa8-Apr-06 0:23

Guffa

8-Apr-06 0:23

Read my previous post again. Repeat until it sinks in. There is noone that can help you with your code if they can't see it.

---
b { font-weight: normal; }

printing

maytel7-Apr-06 18:06

maytel

7-Apr-06 18:06

in vb.net
i have an epson printer
and i have added a custom paper
how do i use it in my code?

tried the code below but it says that the kind should be custom, how do i set it as custom i tried but it cant be set.

With oPrintDoc.PrinterSettings
.PrinterName = oDlgPrint.PrinterSettings.PrinterName
.DefaultPageSettings.PaperSize.Kind = _
Printing.PaperKind.Custom
.DefaultPageSettings.PaperSize.PaperName = "TFSC DR Form"
End With

tnx in advance

saving .net remoting to file

blucas20057-Apr-06 17:48

blucas2005

7-Apr-06 17:48

I'm trying to serialize and save a remoting object and keep getting this error

runtime error: "Remoting cannot find field __identity on type
System.MarshalByRefObject."

I simply open a filestream
then serialize with binaryformater
and try to save to a file

any suggestion?

How to Remove Balloon Tip on Right Click

Devraj Raut7-Apr-06 10:59

Devraj Raut

7-Apr-06 10:59

Hi Guys!! I have minimised a window into the Sys Tray. When i hover over it, a Balloon Tip Pops up. But when i Right Click on it, the Context Menu shows up but the Balloon Tip doesnt go away. How do i get to remove the Balloon Tip once i click the Right mouse Button on it?

The Code for getting the Balloon Tip is:

NotifyIcon.ShowBalloonTip([interval in millisec], [Title], [Text], [Icon])

Plz if someone could help me, i would be much Obliged. Thanx. Cya Bye!!

Devraj Raut!!!

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