How can I make a MaskedTextBox only receives a rational number?The integer part of the rational number should have less than 7 digits; the fraction part of the number should have less than 4 digits.The following examples are valid:
100.23
123456.434
234
0.7
What can I do when we need to write in maskedtextbox this format
like : 0.00
result : 1235422.10
first level any digits
second level just 2 digits
i have database(ms access)in my web site i would like to get email stocked in my database to my programm(vb 2008)
View 5 RepliesI want to make an app in VB Express 2010 that receives emails. Once an email is received the program would auto reply and send one line of text from a textbox. Then next to the line in the textbox it will put the email address of the recipient and a forward slash. So look at it this way.
Textbox1.text Contains
87077-91290-20228-65481-60901
69214-41847-57634-63453-48975
[Code]....
When that finishes then the next email that comes in would receive line 2 in the textbox and line 2 in the textbox would change like above. I think i can use a message queue from the tools in vb. And the email client is gmail.
I need to know how to make a number to number if statement e.g. if min = 20 to 40 then ...
Current code:
If hour = 8 And min = 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 or 30 or 31 or 32 or 33 or 34 or 35 or 36 or 37 or 38 or 39 or 40 Then
TextBox1.Text = "Test"
Else
TextBox1.Text = "Text1"
End If
I'm trying to develop a decent answering software that can reply to anything that the person inputed. For example this would be in a chat software, when the user receives Hello? the chat program would reply to the sender "Hi, how are you?" or what ever the person away has set up.[code]
View 4 RepliesI'm not sure why, but my database receieves a syntax error when I update it. If anyone can explain to me where I am doing something wrong, let me know! I'm not the best programmer, but I am doing my best
[Code]...
i am trying to modify or make it some more different by making it general. I want to apply same action to all the textboxes in form without write code for each one... how many i dun know. As soon as i add a textbox in my form it should behave with similar action of selecting.
View 2 RepliesI need to create a program that sends & receives data via rs232. I have done it many times in VB6 with easy.
Why is so hard in vs2008?
I managed to send (or so I think). Because I can see the LEDs flashing on my board connected to the pc. But I do not get any response back from the board.
The reason I do it in vs2008, is because I need the program to run on a PDA. But to understand how rs232 works in vs2008, I just created a simple program for the pc to talk to my board.
for example, I send:
SerialPort1.Write(Chr(2) & "I" & Chr(3)) and I expect back (into a textbox), a hex string 25 characters long.
The board also send data to rs232 sometimes, without me requesting it.
I have an application that inserts data to a sql server db when it receives input. The problem is that i see many duplicate entries in the table. I have checked my code and it shouldn't do that:
[Code]...
i have to send emails when a person recieves a personal message on my website and for that i use a StringBuilder to create the HTML markup of the email.also since it is required at many other places as well i have made a Shared Fucntion (i am using VB.NET). now my only concern is that since shared functions are shared among all objects and maybe asp.net sessions, can it be possible that before one person email is being formed and another person access the same function, it would cause the data in the stringbuilder to be overwritten. currently my site doesn't have many users but can this become an issue in the future...please advise me on this...is there any better way or standard procedure to follow when using shared functions.also at one time i made the mistake of using a shared connection object and it would cause close if many people were to access it
View 3 RepliesHere is my problem. I'm not sure I am doing this correctly but I have two arrays [ strMonths(0) = "January"] etc. for each month and another one that receives input from the user concerning the amount of rainfall for a month. [decRainfall(0) = CDec(strMonths(0))] etc. for each subscript
The app. returns total rainfall for the year, average rainfall, maximum rainfall and minimum rainfall.The max. and min. should return the number that was input by the user and the month associated with that max. and min.I have everything working except for the month string being displayed (returned) after the max., min. number in the labels.
How do I work the program receives the radio waves into vb.net 2008 With the use of computer ports?
View 1 RepliesI am attempting to create an app that receives text input on a form and outputs to printer but I haven't any idea where to start for the coding. the form was relatively easy, now how to code. I have labels that give questions and 16 text boxes 5 list boxes and 10 check boxes to receive input from users how can I arrange the input into a paragraph and output to printer?
View 5 RepliesI've had a search through a number of extremely useful articles on the forums, however rather than reinvent the wheel I thought I would ask if anyone already had what I am looking for..A simply little VB app that opens a session to a specific IP port and then writes to a test file everything it receives. If the connection drops, simply re-stablish it and keep listening for text to write to the file.
View 1 RepliesI've inherited a tested function that processes incoming data from a .NET Serial Port. (Dim RXBuffer as string = serialport1.ReadExisting) I've written a different part of the application that processes a byte array as received from an asynchronous .NET socket.
Is there a way I can convert the byte array into a string as if it arrived from the serial port?
I would prefer to rewrite a very long 'if statement' into byte array functions syntax that look like:
dim b as boolean = IsBitSet(state_buffer(i), j) 'rather than:
dim b as boolean = (Asc(Mid(RXPacket.Pdu, CInt((i - (i Mod 8)) / 8) + 1, 1)) And CInt(2 ^ (i Mod 8))) > 0
i want a button to perform a function of checking the last digit number in a field of a table in and add a digit to it and display it in a textbox.
View 1 RepliesWhat exactly is a MaskedTextProvider? What is it used for?? and How do i use it?I mostly understand the MaskedTextBox control, but I'm not sure what the connection is between to two is?how to go about using the two... Does anyone know of any??? I found plenty of the MaskedtextBox, but none with a decent explaination of the use of the MaskedTextProvider.
View 3 Repliesi recently use vs 2010 but i cant see the MaskedTextBox control in the toolbox.
View 1 RepliesI'm trying to use a MaskedTextBox for a form. I'm not sure what to put for the Name property?
Is it: maskPhone or mskPhone or mtbPhone or ......?
How do I get just the value that is typed into a MaskedTextBox?For instance, if I have a MaskedTextBox with the mask of (999) 000-0000 x000000, and the user typed in a phone number, like (905) 555-1234 x6869.How do I get back the raw number value, without the mask? (ie: 90555512346869)
View 3 RepliesAfter experimenting around with DevExpress controls and adding them to my form, Custom mask do not seem to work on the MaskedTextBox. If I place a custom mask and debug, I get a null reference exception.
It seems to be the maskedTextBox's mask property that is doing this. I have tried setting the mask through design and by code. However, neither way works.
My question is, is it possible to use a TextBox as a maskedTextbox? To be able to format it? I need the user to enter in hours, minutes, seconds like hh:mm:ss or 00:00:00.
Here's the error I get:
"NullReferenceException was unhandled. Object reference not set to an instance of an object."
[Code].....
I am creating a WinForms application using VS.NET 2005, VB.NET, and SQL Server 2000. My problem is the MaskedTextBox control. I can successfully insert the value in an SQL Server table column as smalldate such as 3/17/2009, but it displays as 31/72/009.
I tried the following with no success:mskLastPayment.Text = Format(rdr!LastPayment).ToString("MM/dd/yyyy")mskLastPayment.Text = rdr!LastPayment.ToString("MM/dd/yyyy")mskLastPayment.Text = CType(rdr!LastPayment.ToString(), DateTime).ToShortDateString
how to understand a msakeditbox in null?
View 4 Repliesfor example i want to put 0000012, but the zero number not showing.
View 1 RepliesI am trying to find a way to validate my MaskedTextBox control called mskDate which is a short date property. I need to determine whether the user entered a date in the MaskedTextBox control. I cannot use the Not IsDate function because what happens if the user does not make an entry, then the Not IsDate would not work because the user is not required to enter a date. What happens if the user only enters 03/? This would not be considered a date, but a valid date is required. I tried using the substring to see if an entry has been made but it does not work because of the / / format.
View 2 RepliesIs it possible to disable a maskedtextbox and not have it greyed out? I have several on my form, some of them I allow input and some I don't. I'd like to have the enabled boxes one color and the disabled another color.
View 2 RepliesMaskedTextBox Property does not work
View 3 RepliesI am trying to find a way to adjust the height of a MaskedTextBox. The height seems to depend only on the font size. I tried to create my own class and use SetStyle to allow me change the height but it didn't seem to have any effect. I set the parameter to True and False, both with the same result. The height changed according to the font size and I could not change it. The code is shown below.
What is the purpose of the FixedHeight style? Is there a way to control the height of the MaskedTextBox?
Public Class Form1
Dim WithEvents MTB As MyTextBox
Public Class MyTextBox
[Code]....
Does anyone know how to set the maskedtextbox to a currency format that actually works? I have set the mask to $999,999.00 but the user input looks like this 120,0 instead of this 12.00. It seems like the maskedtextbox would be able to handle this type of input without using the keypress events to alter the text.
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