Create An Error Message By Message Box To Tell The User To Enter A Number Only If They Key In A Character Value?
Feb 22, 2009
how to create an error message by message box to tell the user to enter a number only if they key in a character value?
I MEAN AFTER THEY PRESS THE CALCULATE BUTTON
Private Sub btnCalcFat_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalcFat.Click
Dim intFat As Integer
intFat = Integer.Parse(txtFat.Text)
lblResultDisplay.Text = txtFat.Text * 9
End Sub
My text box is call txtFat
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Jan 6, 2010
create a message box that stores my user name, message, and post datetime into the database as messages are sent. Soon came to realise, what if the user changed his name? So I decided to use the user id (icn) to identify the message poster instead. However, my chunk of codes keep giving me the same error. Says that there are no rows in the dataset.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim name As String
Dim icn As String
Dim message As String
[code]....
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Mar 21, 2011
I have two masked text boxes that holds Phone Numbers and Zip Codes.Since they are Masked text boxes and are set not to allow characters or letters, the user must enter numbers.However, how do I add a message telling the user to enter number and zip code since there is no prompt?I don't need to validate the numbers just to add an error message if it's left empty.
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Jul 8, 2011
I made a simple calculator console app, and pressing ALT+ENTER gives me an error message: This system does not support fullscreen mode. Is it because I am using Windows 7 Starter?
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Apr 22, 2009
I have couple of questions with datagridview 1.How to handle the Enter-Key when the user edited the columns value.?I mean, without changing the columns values we can suppress the enter-key by following. No problem. It's working Fine.
Private Sub DataGridView1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles DataGridView1.KeyDown
If e.KeyCode = Keys.Enter Then
Dim numCols As Integer = DataGridView1.ColumnCount
Dim numRows As Integer = DataGridView1.RowCount
[code]....
But after if I select any one column & changed the values then if I press <Enter> it's moving to next row. But I want to move it to next column..
2. With Datagridview - I have a column for date. and it's defaut format is mm/dd/yyyy. But Iam looking to read the date by "dd/mm/yyyy" format. Also if the user feed wrong date format then it has to display my Error message. "INVALID DATE"
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Mar 2, 2012
[code]...Basically, I'm trying to make it so when you type a number between 1 and 16, it runs it through the equation and displays a result in a label. This event happens after you press a "yes" button.The problem is when I test the program I put any number from 1 to 16 and I get my own error message, specifically the <1 error. It doesn't make since because I type in numbers that are greater than 1...
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Sep 24, 2009
I want to create vb.net dll for exe ie displaying error in message box after installation....For example if connection file is not correct after installation then it should display in error message for that db connection is failed.....It should happened after installation....
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Jun 21, 2010
i have a form with 4 text boxes on them when the user selects add the information from the textboxes saves to my database im just wondering does anyone know how i would make an error message appear if one of the textboxes was blank and stop the new data being saved until all textboxes have data in them?i did write the following peice of code but it did not work Private Sub Button1_Click(ByVal sender As System.Object, ByVal e_
[Code]...
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May 10, 2010
im trying to generate an error message to the user to let them know a file doesnt exist.So far ive got the user to enter the file name into a textbox, they click search and if successful will load a new form with a PDF file reader built in( AxAcroPDF1 )everytime i enter the right file name i get the file loaded, if enter the wrong name the File page still loads with no pdf and no message saying file doesnt exist.
Private
Sub PictureBox1_Click(ByVal
sender As System.Object,
ByVal e
[code]....
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Oct 27, 2010
I need to return an error message to the client, if they have entered invalid data when calling my web service. So if my code is: [code]Is there a way to display a more user friendly error message (such as a message box or just the words "Invalid Order ID")?
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Aug 11, 2011
I am getting the error Parser Error Message: The server tag is not well formed. on the code line below:
<asp:HyperLink ID="imgFileType" ImageUrl="images/Icon_Pdf.gif" NavigateUrl='<%#"javascript:ViewFile('erg_", Eval("DocumentName") %>' runat="server"></asp:HyperLink>
I need the url link to be parsed as:
javascript:ViewFile('erg_Invoice_3200_QRG_Restaurant.pdf');
What am I missing in the syntax?
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Oct 5, 2011
I need to create a small application that will force a user to enter an even number but i MUST use a loop. Here's what i've come up with:
Quote:
Dim bynombrepair As Byte
bynombrepair = InputBox("Entrez un nombre pair")
If bynombrepair Mod 2 = 0 Then
[Code]....
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Apr 16, 2012
i'm having a bit of a hard time on setting up the calculations.There are three seating categories at a stadium. For a baseball game, Class A seats cost $15, Class B seats cost $12, and Class C seats cost $9. Create an application that allows the user to enter the number of tickets sold for each class and the total revenue.
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Apr 17, 2012
I'm using Microsoft Visual Basic 2008 Express Edition. I have a Folder Dialog Browser added in my form and I call it when the user presses a button. The folder path string is stored in a string variable and displayed as text in a text box. (maybe I should use a combo box)
My question is: If the user inputs by hand a non existent path, how do I return an error message, stop the file creation into the invalid path, and return to my main form?
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Nov 10, 2010
I never got into detailed error processing too much when I played in VBA/VB6 a lot. Mostly then, if you ran into a user error (such as some input of theirs failing a validation test of some kind), you popped a MsgBox() with some error information and the critical (or warning) icon, and safely aborted out of the code
In .NET, my reading basically points to exceptions as the end-all in error handling. It looks to me that if you know a spot of code where a user can screw up, you're supposed to catch it with either try...catch blocks (for things like data conversions), or standard if...the...else constructs for other things, and then throw a new exception if needed.
Isn't throwing an exception essentially a forced crash of a program in a sense (granted, you get the option of continuing)? Or are exceptions geared specifically for things like data conversion errors and other "things that shouldn't happen", and resume use of MsgBox() and friends for minor user screwups?
Consider the case of where you have a TextBox that is only supposed to accept numeric data (or heck, just a specific set of characters). Barring some other trick that lets you restrict that field (let's just assume it's freeform, programatically), it would seem a bit of a waste to throw new exceptions everytime they type in an invalid character, or even if the error checking doesn't happen until they press a submit button (like on a webpage). Popping a MsgBox() seems more sane in that case.
So what's the straight dope on exceptions and throwing new ones on user errors? How about if your program also exposes a programmatic framework? Bad usage of one of the programmatic functions definitely seems like new exception territory to me.
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Sep 11, 2010
I was just wondering if there was a way with, using VB.net, be able to create a program to detect when a message is received in Windows Live Messenger, and alert the user?Essentially, MSN is minimized in background and our program, Program A, is also running in backgroung.Friend X sends us a message, the MSN icon blinks as usualy, but also a window pops up and shows the name of the user and the message.I was just wondering if there was a way to connect to MSN in some fom to be able to do this?
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Jul 7, 2011
Create a program which promps the user to enter an unlimited number of test scores. The program should show the high score and the low score. You should use a loop of your choice within this program. The program should look similar to the one below:
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May 11, 2009
For my VB assignment I need to encrypt message and decrypt it again I managed to do it all pretty easily but the problem is the enter key. How can I turn it into ASCI and back again example
user entered - Hello
My Name is kurt
encrypted Message - Hello13My Name is kurt
Decrypted Messafe - Hello
My Name is kurt
The Space is no problem I managed to encrypted well but the enterkey is coming wrong (btw 13 because its the asci value for enter key).
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Jul 8, 2011
I cannot seem to figure out why VB keep throwing me this exception but here is the code
[Code]...
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Mar 3, 2010
I have a password form that contains a load of buttons. The user has to enter a four digit, numeric, password to procede. They do this by pressing one of 10 number buttons on the screen, the keyboard isn't used. If they enter the wrong password an error message pops up (this isn't using the error tool I just added a message box msgbox("Error Code #638492") or something) if the user doesn't enter a password, after 5 seconds (I use a timer called Timer1 with an interval of 5 seconds) the form closes and it goes back to the previous page.
My only problem is when I close the form using Me.close(), the message box is still displayed. And if the message box is still displayed it doesn't work. The form is miminized (I have the application in full screen) so this is very bad. What I need is to simulate the enter key press then close the form so the enter key is pressed, the messagebox close then the password form closes.I can do this using SendKeys.Send("{ENTER}"). Here's the sub I use:
[code]...
However, if I don't have the 'Close()' line of code in the message box closes as it should. If I don't have the message box open and I don't use the SendKeys.Send("{ENTER}") then the close() line works perfectly and close the password form as it should?
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Apr 24, 2009
I need to insert a msg in a random gen character block.
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Jun 16, 2010
I created a simple user control and everything went fine.Then I created another of the same control (as a different project) from scratch (creating the controls in a different configuration; but pasting code from the previous one from a text file).As far as I know I did everything the same for creating a user controlCreate a Class Library project Then Project>Add New Item> User Control Then delete the initial class that was added automatically (usually named Class1.vb) Put all of my code and components into the user control class.However, when I wanted to run it in the debugger as I did in the previous project, I now get an error message:"A project with an Output Type of Class Library cannot be started directly."
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Mar 30, 2010
How can I provide an error message if the user does not provide a value in my textbox. I found this example, but it doesn't work in my
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e_
As System.EventArgs) Handles Button1.Click
If TextBox1.Text = "" Then
[code]....
It says that Error Provider1 is not declared. How do I do this the right way?
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Jul 15, 2009
In my datagriedview i have 5 column called T,C,F,S and H.I want to specify in column C that the user must enter 3 digit. For column H the maximun value should be 2000 so user should not enter more than 2000.how i can specify this condition for my datagriedview column?
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Jun 23, 2011
this is a web response:
<RESP>104</RESP><BAL>0.72</BAL><VER>4</VER><UID>171683</UID><PID>152045</PID><MSG>Invalid password</MSG>
how to get this done im try to do is to get the <resp>104</resp> if this is the response my message box in vb says invalid username or password?
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Mar 11, 2009
I'm having a little difficulty sending mail using VB.Net (2003). I'm attempting to use the company mailhost, and the usual System.Mail methods to do the send, but i get blocked by the "Could not create CDO.Message" error. I've been on MSDN, and looked through the various threads on here, and they all point to a problem with the dll.
The trouble is, that this is not a consistent error. Sometimes it works, sometimes it doesn't. It will work on one user's PC profile, but not another's on the same PC. It will send a mail for a particular user, and then 2 mins later fail to send the same mail. I've tried re-registering the dll anyway, and faffing about in the registry as per the MSDN recommendation, but no joy. And because it's so inconsistent it's proving pretty tricky to narrow down the cause.
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May 21, 2009
I have Visual Basics 2008 express and I tried to make a autotyper, so this is my
Button1: Timer1.Start
Timer1: Timer2.Start
Timer2: SendKeys.Send(Textbox.text)
Button2: Timer2.Stop
So it was my first try ever with VB and it kind of worked... Only 2 problems;
1. Button 2 doesn't really work, I have to click it really many times, then go to a different window, then click it really many times again, in the meantime it keeps on spamming
2. How do I make my autotyper press enter every single time after the textbox message was typed?
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Dec 13, 2010
just curious if there was a way to make the text in a message box scroll across the message box
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Apr 3, 2009
For some reason i keep getting an error whenver i try to display a number in a message box. If i write some simple code like this:Code:Private Sub btn1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn1.Click
[Code]...
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Oct 4, 2009
I am supposed to create a program in my VB.net class to do the following:
1. Prompt the user to enter the beginning number and the ending number.
2. Find the sum of the even numbers between these two values, inclusive.
[Code]...
We are currently using for next statements in the class. I know how to prompt for and utilize the numbers that are input etc. My problem is the EVEN numbers part. I obviously have to determine if the number is even and then use a step value of 2 from there. But not sure how to determine if number is even or odd (guessing to use mod, but totally lost).
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