i have 4 TextBoxes, TextBox1, TextBox2, TextBox3, TextBox4..When i press the button1 If any of them is blank, i want to get the message "You cannot leave any text field blank!" and do not execute the command from the other side, if the user has input text it should execute the commands..How can i do this, because if i had 1 text box it would be easy to make it now i have 4 and i don't know what to do!
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I do not know why this does not work. Obviously, I made a mistake somewhere.
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I have a form reading from an Access file now everything seems fine until i go to add record if i then press the first Btn or pre Btn without entering any data then it gives me the error Column 'Membership ID' does not allow nulls. [code] i have been trying to get it to show a msgbox saying the box cannot be left empty but so far no luck.
View 4 Repliesi have made a button that opens a msgbox dialog what i need is to make it show a msgbox with an empty textbox inside and an ok cancel button,so when a user clicks it,it appears and asks for an url string and then,if uses pressed ok,the url should be placed as a movie to axshochwaveflashobject like this Private Sub FromUrlToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FromUrlToolStripMenuItem.Click If FromUrlToolStripMenuItem.Pressed Then MsgBox("emptytextbox",title "Enter the url") If MsgBoxResult = ok Then AxShockwaveFlash1.Movie = "msgbox answer"AxShockwaveFlash1.Refresh() End Sub
View 6 RepliesI Have a problem whit my code.I want to receive 4 character variables (0-255) all the time and put them in the corresponding textboxes:
Public Class Form1
'Dim WithEvents Comm1 As New IO.Ports.SerialPort
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Comm1.Encoding = System.Text.Encoding.GetEncoding("Windows-1252")
[code]....
I Want to send date when I want , but I want to receive data all the time (i want that textboxes 3,4,5,6 to update whenever data is comming an form is load).
I have a code which runs a check. User inputs values into textboxes in inputform, then runs the check, and the msgbox is displayed. if msg is yes then program continues, else I want it to return to the input for to change values in textboxes. How can I do that?
Below is the code.
If (optanodespacing > 300) Then
optanodespacing = 300
Dim answerspc As Integer = MsgBox("Anode Spacing Must NOT Exceed 300m,
[CODE]...
I have a code in Save Button, and part of it, a code that checks if the dynamic text boxes that has been created is empty. But when the system runs, it only check the first set of text box and an an message appears "Collection was Modified; enumareation operation may not execute.".
Here's the code:
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
Try
For Each txt As TextBox In TextBoxes2
If String.IsNullOrEmpty(txt.Text) Then
[Code]...
I have numerous textboxes which I use to gather data to be placed into an array. But I want to ensure, before I place them to the array,that there is at least one character (letter or number, no space) in each textbox. Seeing as I have about two dozen, it would seem tedious to write an If...Then statement for each of them. And I cannot use a custom textbox class for this. So how can this be done?
View 3 RepliesWhen clearing input from users. What is the difference between clearing it in these two forms
txtExample.Clear()
versus
txtExample.Text = String.Empty
The only difference that I could find was that the labels aren't cleared with .Clear() (or at least from what I inferred from my book that's not possible). Is there a noticeable speed difference or should I just clear both labels and txt boxes with String.Empty
if its possible to have a msgbox cleared without having the user do it manually? what would be my best option here?
View 8 RepliesI'd like to display a form with some information on it (i.e. this is what's happening now inside the program) and essentially two buttons, "dismiss" and "halt" that would either close the form & continue processing, or tell the code to stop right away.
I can do all of that, no problem. What I ALSO want, though, is that if NO button is pressed within 5 seconds, then the "dismiss" option happens automatically. That way if I'm away from my desk, I can see what was happening from the logs, and the processing doesn't pause until I get back. But at the same time, if I DO happen to be watching the screen & see something I want to investigate, I can halt things right now.
Dim launchexe As String = "lol.exe"
Dim text() As String = Data.Split(",")
For Each item As String In text
[CODE]...
In the msgbox the LauncherExe isn't changed!?
here is the exception error System.IndexOutOfRangeException i want a msgbox saying device not detected
View 2 RepliesI have what might just be the most retarded problem ever...the thing is, I have this loop, and it runs just fine(except for the boringness it is to run it) if I use Msgbox("whatever") after some of its lines. But it won't run otherwise...I guess it has to do with the time my local server takes to awnser, but I tried System.Threading.Thread.Sleep() up to 10000 and nothing worked...even tough it did on msgbox's which I went trough faster than those. I am building a very basic local program to test my website for vulnerabilities,a s you can probably figure by the code.
Also, how can I clean Webbrowser1 cookie's?
Here is the code
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]....
Taking the following
vb.net
Dim ImageMagick As String = ""
Dim convert As String = ""
Dim mogrify As String = ""
[Code]...
When I run it, it works because I have MsgBox() in there (at the end of the script). As soon as I remove MsgBox() it stops working properly, why?
What it should do: When the program loads, it will call my sub, the sub will check to see if the two files exist, if they don't exist a folder dialog box is opened and you select the folder that they are in, it will then call it's self again and do the same thing. If the files do exist it should continue with the program.
The Problem is, that it only works the way I want when I have the MsgBox() function there otherwise it only works if you select the correct folder the first time the dialog pops up.
How is it possible to receive Bluetooth-messages through vb 2010?
View 1 RepliesI just want to alert when user hit "enter" key.
I tried this one in keyup event,
If e.KeyCode = Keys.Enter Then
MsgBox("msg")
End If
It didnt work, is that wrong ?
I just want a button to check if a certain process or window is running and if it is i just want it to show a message box.
View 2 RepliesI've seen that there are several options out there for being able to send email from within a Visual Basic program, but I've seen much less written about how to use the program to receive emails. What I'd like to do is set up a dedicated email account (probably g-mail or Yahoo or something similar, although it could be through the email package that comes with my web hosting) that I'd use to send short text commands to the program from my laptop or smart phone. Periodically the program would download new emails (if any), and parse the body to see what I'm telling it to do. Something like, "cmd a" tells it to e-mail me Report A, "cmd b" tells it to e-mail me Report B, etc.
[Code]...
I've looked through a lot of snippets online and I see a lot of things similar to
Dim bytes(tcpClient.ReceiveBufferSize) As Byte
networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize))
but what I am unsure of when to call such a thing? How do I know when there is data to receive...in visual basic 6 with winsock, there was a specific routine which was called upon data arrival, but I see nothing of the sort for vbNet.
I want to receive email messages in VB 2010 Express Edition. I use gmail. It can be pop3 or imap. I would prefer imap but what ever is easier is fine. Then when an email is received i want it to auto reply.
View 2 RepliesI am testing out packet sending with some friends and I've made a chat program which seems good and all...(not really, its really bad actually), But anyway... The users cant receive incoming messages unless they portforward port 1337 to their computer... How can I get users to receive messages without portforwarding?
View 7 RepliesI have a simple tcp server listening for clients. I use a mud client to test if it's working. The mud client says that it's connected to 127.0.0.1, but the server doesn't show the msgbox that a client has connected.[code]
View 3 RepliesRecently I created a Windows Form database project in VS 2010 and it worked great.I am now trying to port this project into VS 2008 (Using VB.NET in both btw).When I run it in VS 2008 I receive the following error message:[code]
View 1 RepliesThis is the first time I have used this messaging library and used some example code to implement it. The first time I ran it it worked perfectly but I abruptly stopped the code since my parsing method seemed wrong. So when I restarted it, the code freezes at the following line:
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Using the following
If GeBrowse.DownloadString("URL GOES HERE").Contains("CHECKS FOR TEXT HERE.") Then
Something goes here
If there is no apparent internet connection, how would i create an error handling Message box or something of the sort?
the application I'm building is ALMOST done. The ONLY final feature I NEED to add is the ability to receive email. Now I'm using VB 2010. How would I go about doing this? Would I use 2 listboxes and a form with labels on it to display the message. I haven't any code yet. How in the world do I do this??
View 2 Repliesim trying to empty a datarepeater control because when the user selects the button twice it throws an error about double binding to the same control.i tried setting the datasouce to nothing and stating databindings.clear() but still didnt work?
View 1 RepliesThe data source is an Access 2003 table. I create the table in code and then populate it with 70 rows (each one empty apart from a date field). This unfortunately adds a 71st row (the placeholder for a new table row). Is there a way to stop this row appearing (I don't allow users to add rows anyway, only to edit existing ones, so this final empty row is just untidy and always empty).
Here is the code I use to create the 70 rows:
Conn.Open()
da.Fill(ds)
dsNewRow = ds.Tables(0).NewRow()
[code]....
My DateTimePickers are retaining their values from one added record to the next. How do I empty their Value contents after each record is saved?
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