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hi all..
thanks dave.. ok.. i'll explain what i whant to do..
actually, i want to make a project using vb. i want to make some interface in vb to my hardware using MSCOMM.. actually, about the hardware, i want to control motor.. but for this moment i want to learn simple application, for example i want to turn on LED( the hardware ) from the interface(VB).
for your information.. i use PIC16F877A and microC software(from microelektronika) to program the PIC16F877A.. and i use rs232 protocol
for this moment i want to send data from vb using MSCOMM to turn on the LED..
for example, in my vb there are two command button, button1 and button2.. button1 is for turn on the LED1 and button2 is to turn on the LED2..
does someone know how to do it.. can someone please help me..
areon25
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First, which version of VB are you using?? VB6, VB.NET 2002, 2003, or 2005?
Now, those are two entirely seperate projects that don't have anything to do with each other...
The first one, programming a controller over serial, is easy enough to do. All you have to do is setup the COMM port with the correct parameters and start sending and receiving data, just like you type it in HyperTerminal. The exact procedure for which is dependant on your controller requirements. You can find example projects all over the 'Net, just Google for "VB Serial Comm".
The LED one isn't so easy. The serial port isn't normally used for this because of its low pin count and the programmability of the port only gives you a brief "ON" for the LED, unless you continuously send data to the port. The parallel port is customarilly used for LEDs, switches, and stepper motors. Again, just Google for "VB control LED" and you'll find a few projects, but on the parallel port.
Dave Kreskowiak
Microsoft MVP - Visual Basic
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hi all..
thanks dave for replying my msg..
for your in formation i use vb 6.0..
areon25
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Hello, I'm sorry for asking such a basic question but I cannot find the answer to it by searching any forums..
All I need is to be able to do something simple like make a msbgox pop up when the user clicks enter on a text box. Basically a user will type a number in the textbox and then a pop up box will appear showing the number they have just typed.
Could someone help me with this please?
Thanks
John C
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There are several possible ways to do this, depending on your needs. You could use the "Leave" event of the textbox to popup your messagebox when the control loses focus (either by pressing enter, tab, or clicking the mouse on another control).
If you only want the popup to occur when the enter key is pressed, you should use the textbox control's "Keypress" event to check whether the key pressed was the return key, and run your popup code if it was.
Hope this helps.
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Hi,
I think the following code will fulfill your requirement.
TextBox1_KeyPress
-----------------
If Asc(e.KeyChar) = 13 Then
MsgBox("The Data You Have Entered : " & TextBox1.Text, MsgBoxStyle.Information)
End If
With Regards,
Pandian S
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iam working in vb.net 2003 the default datetime format is 'mdy' when i try to store datetime in database in format 'dmy' error apear i want to store datetime n database in format 'dmy' and when reterive and dir in application dir it in format 'dmy'
ma_refay
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That is impossible. You can not store a date in a specific format, as a date field doesn't have a format.
Specify the format to use when you convert the date into a string for displaying.
Example for ISO 8601 standard format:
lblDate.Text = reader.GetDateTime("mydate").ToString("yyyy-MM-dd")
---
b { font-weight: normal; }
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If you use myTextBox.Text.ToLongDateString() the return value will always be in the format of the current culture of the machine (regional settings) or that has been set in your app.
Other methods are:
.ToShortDateString()
.ToLongTimeString()
.ToShortTimeString()
etc...
Steve
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I need to clear my visible tables and reload them regularly. When I use tableadapter.clear, however, the daa table completely disappears and then is redrawn with the new data. This is annoying! Can I clear and refill a table in another way that doesn't do this?
Thanks!
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If you are loading data into your dataset using a Fill method, you can set the ClearBeforeFill property of the tableadapter to true. This will prevent you from having to explicitly call the clear method. I have not tested this, so I am not sure if the control will redraw the way you would like, but it's worth a shot.
Another possibility would be to call the SuspendLayout method on the control prior to calling clear, then call resumelayout after the table is reloaded. Again, I have not tested this option either but I believe it will suspend redrawing of the control until ResumeLayout is called.
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I have attached the database programmatically in 2003 by running the sp_attach_db function on sql.
But when i try to do tha same in 2005 then the problem is is says
"Cannot associate files with different databases."
this is when i try to add both MDF and LDF files.
Can any when tell me how can i attach database progmt in 2005
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Hi Everyone,
How to uninstall specific program from the control panel/ Add remove programs using vb6. Can anyone help me in this regard.
Thanks in Advance,
Regards,
Manowj
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I am making an eyedropper tool for my program and want to use GetPixel. The problem is everytime i call the getpixel function, it only seems to see the pixels of my form's backcolour and clicks right through my picture box.
Can anyone suggest a reason and/or solution for this problem, or even an alternative more effective method.
this is my code:
Dim EyeD as boolean = true
Private Function GetPixel(ByVal x As Integer, ByVal y As Integer) As Color
End Function
Private Sub ButtonEyeDropper_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles EyeDropper.Click
EyeD = True
End Sub
rivate Sub PictureBoxDisplay_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Display.Click
If Me.EyeD = True Then
PixelColour = GetPixel(Windows.Forms.Cursor.Position.X, Windows.Forms.Cursor.Position.Y)
Me.panColour.BackColor = PixelColour
Dim strImage As Bitmap = Display.Image
strImage.MakeTransparent(PixelColour)
Me.Display.Image = strImage
EyeD = False
Else
If Keys.RButton Then
Me.Display.SizeMode = PictureBoxSizeMode.Zoom
End If
End If
End Sub
Posted by The ANZAC
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You managed to show all the code except the code where the problem is. What does your GetPixel function contain?
---
b { font-weight: normal; }
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How about:
Dim c As Color
c = PictureBox1.Image.GetPixel(PictureBox1.PointToClient(Windows.Forms.Cursor.Position))
This should work, so long as the Image property of the PictureBox returns a Bitmap object.
Dave Kreskowiak
Microsoft MVP - Visual Basic
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When i put this code in, i get a message that says "GetPixel is not a member of system.Drawing.Image"
where am i supposed to put this code anyhow, you were a bit vague on that matter.
Posted by The ANZAC
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Whoops! My fault! Try this:
Dim b As Bitmap
b = PictureBox1.Image
c = b.GetPixel(blah, blah)
Dave Kreskowiak
Microsoft MVP - Visual Basic
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Dear Guy's
I'd like to asking your favor to give me some advise how to export or import data from Excel file to access data base through out Visual basic.net Command program.
thank's a lot for your great favor to me
Best regards
ICE
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I have read several articles about deploying applications with vb and every article mentions going under "add new project" and selecting the setup and deployment projects to implement a file named setup wizard which will guide you through installing your program. The problem is I cant find this anywhere in the copy of visual basic that I am using (Visual basic 2005 express edition). I have considered that it may be due to the fact that I am using an express edition, but none of the articles that I have read mention anything of this nature. I have also looked around the downloads section on Microsoft and found no extra add-ins or anything that assist one in deployment.
What I am wanting to do is have a folder created a several files placed in this folder for reference when the user attempts to install the application. Seems easy enough but I have yet to figure out how to do this. Also is it possible to build in the .net framework as a reference so the user can still install the program if he or she does not have access to the internet.
Any help with these problems would be great. I have searched for hours and had no luck, but in no hurry would just like to solve these issues.
-Erik-
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ok mr Erik
i did not use .net express edition but now am using professional Edition
but i will try to help you
ok after working on your project if you want to deploy it
1- don't close your project
2- write click on solution (project name ) in solution Explorer
3- Add new project
4- you will see three lists first one your default language, 2nd one other languages, third one other project type
5- choose 3rd one (other projects type) (expand it)
6- choose Setup and Deployment
then choose type of deployment which you prefer
ok mr Erik i wish if i have helped you
IsMAiL
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After I perform Step 2 (right click on the solution in solution explorer) my options are
Build
Rebuild
Publish
Add-(under this button you can add a new form not a project)
Add Reference
Add Web Reference
Debug
Rename
Properties
so I do not have the option to add a new project. I have come to the conclusion that it must be due to the fact that I am using an express edition. If you know of any other way to create a folder when the app is installed I could possibly go that route.
Thanks alot for the help.
-Erik-
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Try left-clicking on the name of your project in solution explorer, then going to the File menu, Add, New Project.
Add new project does not appear in the right-click context menu.
Hope this helps.
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I performed these steps and when the add new project window opens i have six options
Windows application
my movie collection starter kit
class library
screen saver starter kit
console application
search online templates.....
Keith are you using vb 2005 express edition. Just curious because because I have a feeling that it is some feature that is not built into the express edition. Also is there any other way to force the program to create a folder and store some files in the folder upon installation.
thanks for the help guys.
-Erik-
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