i need the program to reject letters and words which are entered into the text boxes and only accept numbers. At the moment i am using IF statements but i need a more pratical approach to this.
View 4 RepliesI need to validate that my textbox is a number. I found this example online, but it says that Type RegExp is not defined. How do I fix it?? Here is what I have:
Private Sub txtAnswer_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtAnswer.TextChanged
Dim myReg As RegExp
[Code].....
I am trying to keep track of the total number of discounts given (whole numbers) I keep getting .75 after the first discount, and it adds .75 for every trans action after that. I have tried to pick it apart but I just don't see it. You can follow by tracking the comments that relate to the summary. I know that is an Integer but the book has it declared as a decimal so I went with it.
Public Class BookSaleForm
'Declare module level variables
Private QuantitySumInteger, SaleCountInteger As Integer
Private DIscountSumDecimal, DiscountedPriceSumDecimal As Decimal
Const DISCOUNT_RATE_Decimal As Decimal = 0.15D
[Code] .....
I have this code that is supposed to validate that the value a user enters into the textbox is a number and not blank, but it is displaying the error message even if the user enters a number.
Private Sub txtAnswer_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtAnswer.TextChanged
If Not IsNumeric(txtAnswer.Text) And (txtAnswer.Text <> " ") Then
MsgBox("Please enter a number! Try Again!")
txtAnswer.Focus()
Exit Sub
End If
End Sub
I just realized I already have another section that checks if the textbox is left blank, but I still need to check that it is numeric.
I have an application that has 3 list boxes, one selects a workshop, the other a location. the third is to display selected costs.to do the calculation a loop is required. i have written the code but when i calculate the cost the final result to be displayed ends up as being the cost of the last work shop and location * 3,What is supposed to happen is the location is multiplied by the number of days(3 in this case) and added to the workshop cost.the loop is supposed to add all cost from the list box till all have been added.what is happening is the calculation goes to the last entry as stated the multiplys this total by number of days(dbl)?
View 1 Replieshow to validate 4 textboxes so that only numbers 1 to 4 can be entered but no number can be repeated.i already have code but it only validates some of the boxes and allows numbers to be repeated in other
Public Class frmGrid
Private Grid() As Short
Private Const intDimension As Short = 3
[Code]....
I have designed a form with textboxes for numerical entry. I need to validate each textbox so the number entered is an integer, and is between 0-1000. I am struggling to find how to validate the data entry.
View 4 RepliesCan someone tell me how to validate numeric, alphanumeric, currency, and 4-digit number in textboxes ?
View 2 Repliesi try to make a regular expression format to validate phone number at this format: (555) 555-5555 Dim IsPhoneValid As New System.Text.RegularExpressions.Regex("^/([0-9]{3}/)*[0-9]{3}*[0-9]{4}$")
View 3 Repliesallow the user to enter a stock transaction and determine the stockbroker's commission. Each transaction includes the following data: the stock name, price per share, number of shares involved, and the stock broker's name. Assume price per share = P. The stockbroker's commission is computed in the following manner: If the P (price per share) is less than or equal to $50, the commission rate is $0.19 per share, if P is greater than $50, thecommission rate is $0.26 per share. If the number of shares sold is less than 150, the commission is 1.5 times the rate per share. Display the results in a message box, including the total commission earned.
View 2 RepliesFist off, I am new at this and only learning it for a class. We have a program to create using Visual Studio 2008. The teacher doesn't give us much to go by so I really have no idea where to even start so any code will be a great help. Here is what i have to create:Your project will allow the user to enter a stock transaction and determine the stockbroker's commission. Each transaction includes the following data: the stock name, pricer per share, number of shares involved, and the stock broker's name. Assume price per share = P. The stockbroker's commission is computed in the following manner: If the P (price per share) is less than or equal to $50, the commission rate is $0.19 per share, if P is greater than $50, the commission rate is $0.26 per share.
View 1 RepliesI just need help with my Pizza Program in calculations. It keeps on adding on top of the original calculations. I did try to set the variables to 0, but that really didn't work out since the price that is shown turns out to be 0.
View 1 RepliesI'm new to VB and I'm doing a calculations program for test scores. I got everything setup for my clear and exit buttons but not sure what I have to put in the calculate button code for it to calculate. Here is what I have so far.
Public Class Form1
Private Sub Label5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lblTestScore5.Click
End Sub
Private Sub btnExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExit.Click
[Code] .....
I am having trouble with a program for the calculation of bicycle gears. you are required to enter the wheel radius the the teeth on the front sprocket followed by the teeth on the rear sprocket. On the first entry of the rear sprocket number, the program will calculate the effictive radiusand display it in a label. If there are subsequent entries of sizes for the rear sprocket then the effective radius is calculated as before as well as the ratio between the current and previous radius.
[Code]...
I'm setting up a quote calculation program for my business.I'm just a beginner with Visual Basic (2010 Express) and am finding it very interesting.I already did some reading and followed the tutorials but I'm getting stuck with my program now.
[Code]...
Make it possible for users to enter necessary data in the "new quote" screen. The data needs to be written into the database table of "new quote"Make it possible for users to lookup previously made quotes in the "open quote" screen. I want them to be able to select a quote based on "quotenumber" or "customername".They then must be able to select a quote, which will open a new window with all quote information from the tables. This information needs to be editable and savable to the databaseGenerate a PDF of a "finished" quote and mail it as attachment to a customerthe "customer information" table contains information for the quote concering address and name of customer. I want this so that users can select a customer in the "quote screen" and all other data will be filled in automatically. I also want that users
can give in a new customer in the quote screen and that that customer will be saved in the "customer information" table.point 4 is also applicable for the "material information table".
I am having a problem with the syntax of this calculation for a bowling program that I am writing for school,
If radMale.Checked = True Then
(200 - decAverage) * .75
lblAverage.Text = FormatNumber(decAverage)
I've got a requirement where I need to calculate a value, however also refer to this value when calculating it. So I've got for example[code]...
I can see how this can be achieved in excel using Circular Reference, however I'm not sure how I go about it when using VB.Net. Is there a similar method to create a Circular Reference as in excel or any other way I can possibly work out the TotalValue?
I am making a quote calculation program with Visual Basic. Per quote there can be multiple parts/products.
What I want now:
1) insert productinformation (dimensions, quantity etc.) in one form
2) write this data into a table or something
The program then needs to calculate prices etc. but first it is important to get the data right for the calculation.
What I am thinking of myself is putting the data into textboxes and then let this data be transported to a table and have one product per line in that table. from this it can be calculated
I need to store a calculation to use later and obtain a new calculation
[Code]...
I'm trying to figure out a way to validate the user data entered:
[Code]...
This is in MVC3, VB.net. I'm looking for an easy way to validate a users input data into the editorfor field.
I am trying to get my program to validate the hexadecimal range entered by the user, the range being between 00 - FF,
View 17 RepliesHow to validate two textboxes at single button click using vb.net ?[code]...
View 3 RepliesImports System.Net
Imports System.Net.Mail
Public Class Form1
Sub sendMail()
Try
Dim AnEmailMessage As New MailMessage
[Code]...
I use this code to send an email through gmail account but the thing I want to do is, I want to check whether the given email and password exists or not and if it exists then pop out a text box with the body of the mail and type the text and then send it as a mail. But in the above code you have to log in and type body and when you send the mail , It verifies for the email and password while sending and if anything goes wrong says there is no such gmail account.but i want to check it whether the email and password exists or not, when the user enters the email and password at the beginning itself.So that he enters the right email to log on to compose a mail.Is there any way to check whether the given email and password is correct at the beginning only ?
just forgot, I knew this "Textbox1.text = format(textbox1.text, "####.00")" will set up the format to 4number with two decimal - 1234.00, how about if the user enter 12345.00, five number with two decimal, how did you do the check and give error message?
View 1 RepliesI need to write a program that requests a high number and a low number from the user, then the program searches the array and finds all elements within the two numbers. The program is used to search for past presidents, so if I type 43 for low number and 44 for high number, the program will display:
George Walker Bush
Barack Hussein Obama
I think I have an idea of how to search up to a certain point, but not to stop at a certain point....Here is the code that I have for that particular sub procedure:
Quote:
Private Sub btnDisplayRqst_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDisplayRqst.Click
Dim sr As IO.StreamReader = IO.File.OpenText("PRESIDENTS.TXT")
[CODE]...
I need to be abble to validate user input in VB, where the user writes 5 numbers like this "### ##", 3 numbers, a gap and 2 more numbers.
View 3 RepliesI am making a program which generates a random number between 1 and 10 and when 7 appears it is suppose to tell you how many tries it took to get the number 7 and then end the application. This is the code I have used:
CODE:
This code only generates the number 7 and exits the application, each time i click the random button but i want it to show the other number it randomizes too for example 1 2 3 4 .. etc, if u dont understand, please try it, but im trying to say, when i clikc random it just says number 7 (does randomizing in background) and tells you how much tries it took but i want it to show the other number it randomized also and when 7 appears, then exit the program
With a Time value in my program. Basically, I am importing a travel Time from a database e.g. 3:45 so it takes 3 hrs and 45 minutes to get from a to b. I then want to double this - 3:45 * 2 = 7:30, and then want to multiply it by a cost e.g. travel is charged at 25 per hour. so it would be total travel time = 7:30. Travel cost = 25. Total Travel Cost = 7:30 * 25. In the access db, it is stored as a text field, and then imported in vb as a string.
View 1 RepliesPrivate Sub cmdReport_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdReport.Click[code]...
View 2 RepliesI have a code which generates next number after clicking the button NEW like if there is 1 in table while clicking NEW it displays 2. what i want is default im inserting 001 in table then after clicking NEW button it must show 002 instead it is showing 2 only.[code]...
View 1 Replies