GPA 1.0, 1.1, 1.2 through 4.0 alredy entered in a listbox in propertiesradFemale, radMale, btnCalc btnExit: lblMale, lblFemale, lblAll to store averages. There are no text boxes.Please look at my code and tell me what I'm missing.... I'm sure it has something to do with the listbox...
Option Explicit On
Option Strict On
Option Infer Off
[code]....
i'm having problems coding the codes myself. It's an assignment for me from school , after attemtping it for a few hours , I'm almost finish but i'm having trouble in the calculation for average , you see. I feel so tiny in this world when i get to know that there's still more for me to learn. And I'm also having problem with the MsgBox where i need to write the code to notify me like " Please enter integers! " , the teacher would want to test on that availablity either it is present or not.
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I wanted to post a picture of my interface but it kept on saying here that " failed to upload bmp "...
I'm trying to generate a simple average pace calculator. I have coded the calculator to a stage where it seems to work although on testing it i have noted my average pace rounding seems to vary slightly from others online. Although i have also note different calculators online seem to vary from each other.
I have used the .tostring("0.##") as a means of converting my calculation back to actual time rather than a decimal. Is this the correct method or is there a better way?
[code...]
I am getting this error cannot convert string to datatable
The code is
dt = CType(Session("result"), DataTable)
I am trying to store the session value in dt which is a datatable. The session result contains string values.how to convert the session to datatable and store the session value in the datatable.
How do we convert a calculator on Vb from Rad to Grad??
View 1 RepliesIn my fresh installation of Visual Studio Professional 2005 Visual Basic I have typed this code
dim olddate as date
olddate=datevalue("01-01-2006")
I receive an error: index out of range exception
On an other pc with the same fresh installation this do not happen. Why ? I have tried with other funtions : ctype, cdate but I receive the same error, while on an other pc this code is fine.
This question is based on VS 2008 using VB I have a detail Window form which is bound to a SQLServer table using a BindingSource &TableAdapter. The Table is mostly Text & Date fields with the Table Key has an Identity field
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Super newbie here and I recently signed up just to address my problem. Please help me convert or at least tell me what to do on the following code to my vb2008.I saw this listing on a website and I like its simplicity. It was written in vb6.
here's the snippet:Design the form. Create a Command Button named as Command1 and copy that and paste it 11 times. This will create a control array.Then assign the text naming it 0-9 plus (.)dot and they are under one control array. Likewise create cmdOperator control array for the operators Add, Subtract, Multiply and Divide. One button for equals and one for clear. All in all 17 buttons. 1 textbox serves as input and output.
Sorry if I'm in a rush here( I am already) but vb2008 its hard for me to learn control array. I have read a few post awhile here dealing with arrays in vb2008 but I'm overwhelmed with info and confusing for me to grasp the idea.
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I have this code but the problem is that I get an error which says "Failed to convert parameter value from a String to a Int32." Here is the code that I am using:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim conn As New OleDb.OleDbConnection
conn.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = C:Documents and Settings1B09158My DocumentsUser.mdb"
conn.Open()
[CODE]...........................
I want to include an average in a column where the average ignores zero values in a report cell where the column may have
17
19
0
[code].....
I want 16, not 11 so (17 + 19 + 12 + 13 + 19) / 5 not (17 + 19 + 0 + 0 + 12 + 13 + 19) / 7 Something like this if it would work.
=SUM(Fields!fieldname.Value) / Count(iif(Fields!count_cycle_per_hour.Value >= 0,Fields!fieldname.Value,0))
Essentially just average everything in the column NOT a zero?
I'm working on a function to return a exponential average and there are a lot of examples of exponential moving averages but they all start with a moving average that is just the mean as a lead in to calculating the continuing moving average. I needed just a exponential average of a value set. After Googling my Bing off I still haven't seen anything so here is my attempt at a basic exponential average. Is this correct? Are there any errors? I have seen some text about adding a smoothing value to change the curve of the exponential average but not how that would be implemented.
[Code]...
I put comments on the average output since I kept getting error messages about that. My out keeps saying:
Maximum value: 33
Minimum value: 33
what am I doing wrong?
Option Explicit On
Option Strict On
[Code]...
I'm in a computer science class, and we are writing simple programs using Visual Basic 2008. I am really inept when it comes to this, as I have never done it before. I need to write a program that: "Asks the user for 5 numbers and computes the average. It then displays the average with an appropriate message before the average."
I have been really close with this, but I can't get the numbers to add up, then divide by 5, and display a pop up message.
I have calulator while pressing the calculator buttons that corrsponding caption will display in text box
ex:(12 + 2+ (text1) - sum1+[Ref1]/[ref2])
1. how to remove [i have button for remove] string upto previous oprator
2. ex now if i cliked the remove button ex :(12 + 2+ (text1) - sum1+[Ref1]/ should be like this
3. again i clicked it should be like this ex :(12 + 2+ (text1) - sum1+
I'm making a calculator that would read a "string" from a textbox and parse it and follow Order-of-Operations/PEMDAS on the string. I have a couple of questions:
1) What would be the best way to parse the code so that it won't just take a "left expression" and "expression" and perform the operation on those 2.
2)How would I be able to make is so that 0 is considered valid, but prevent a 00 or 020 or 002 to be inputed.
The object of this project is to create code for a 4 function calculator that takes a character string like: 5 + 123 + 6 = and generates a new string: 134 There are multiple tasks to be done. First the string must be broken into tokens; in this case, there are 6 tokens:
5, +, 123, +, 6, and =
Dim input As String = (txtIn.Text)
Dim x() As String = input ?????
[Code]....
I am working on a mortgage payment calculator that has three user input textboxes (amount, interest, term). The interest input is a MaskedTextBox masked to (00.0). The issue I have is that if the MaskedTextBox is has no user input when the calculate button is selected then I get the error "FormatException was not handled" "Input string was not in the correct format", I highlighted the section in the code below. I'm quite positive the error stems from the MasketTextBox mask of 00.0, the decimal I believe causes the issue when no other data is entered.
[Code]...
I am using two textBox's. The first to enter the data. The second to convert to answer the program complies with no error, the debugger cannot convert data type from string to double.
[Code]....
why does the program not convert the textbox txtFahrenheit from string to double?
I posted this in the wrong part of the forums. Using visual basic 2008 and keep geting this message whenever I try and test this calculator program I've been mucking around with for the past 2 hours.
[Code]....
I just switched to VS 2010 for Windows phone 7 developement... I am trying to create a basic BMI calculator app...This is what I have now...
CODE:
However I have these errors which are as below
Quote:
CODE:
Quote:
CODE:
Did I forget to declare something? This does not happens when I am using the divide and multiply in VS 2008.
Error Screenshot as attached below...
I'm doing a simple calculator program calculating Pennies, Nickels, Dimes and Quarters. I made a Try-Catch statement so that if the user enters letters into the text boxes, they get an error message. However, if the user leaves one field blank, the error message still pops up. What's the code so that I can get Visual Basic to recognize that an empty field is the same as 0 so that that message doesn't pop up? [Code]. What do I need to add to it to get that Error Message to stop showing when the user doesn't enter a value into one of the text boxes?
View 7 RepliesI'm having an issue trying to get a wage calculator to recognize an overtime formula. The calculator has to have the overall function of figuring the gross pay, Federal Tax Withheld (15%), and the net pay based on the hourly wage and hours worked for the week. The issue I am having is the wage * 1.5 entry (underlined) where it sates it is not an array or a method and cannot have an argument list. If anyone can take a look at this for me and guide me as to why this error keeps coming up and what I can do to make sure it doesn
View 36 RepliesI tried many things but I always get "cannot convert string to membershipuser" from the ASP.Net MVC Membership Starter Kit
this line from file ListUsers.aspx
var users = (ViewData["Users"] as List<MembershipUser>);
ViewData["Users"] come from
public virtual ViewResult Index( int? pageIndex, int? pageSize )[code].....
I have written the below code for a payroll calculator. When I run the program, it gives me my own error message box no matter if my number of hours fall within the 5-60 hours range as I have stipulated. Is there something wrong with my code? (well, obviously there is something wrong--I just cant find it!)
CODE:
'This program calculates the Gross and Net Pay as well as the Tax Deduction amount of an employee's wages when given the input of Employee Name, Tax Rate, Hours Worked, and Hourly Pay Rate.
CODE:
It's just a small calculator project so it's no big deal, but after I had built the project, I wanted to change the project name and all the file names that had that string in it (and all internal references to that string). I had played with this before and knew that it was asking for trouble but I thought, "What the hell, I'll try it again." feeling a bit brash.
Well, everything works fine in debug mode, but there is this DOS window that pops up just before the main form does, and it doesn't go away for the entire debugging session. I think I see that window pop up on all other projects too (if the main form doesn't cover it up completely), but normally, it's only there for a split second.
. I get this error: "Cannot convert lambda expression to type 'string' because it is not a delegate type" - keyword select become underlined in blue
[Code]...
Above code should displays drop list of employees first name and last name in a combo box
I'd like to convert a string which contains a decimal number into string that contains the binary value, the octal and the hexadecimal value of that decimal number.Afterwards I also like to convert a string containing a binary, octal and hexd. number into a decimal string.Basically I'm looking for the functions:
dec2bin
dec2oct
dec2hex
bin2dec
oct2dec
hex2dec
I'd not prefer to rewrite a function, I'm sure the framework must have these functions already.
i cant seem to create a datetime object in vb.net with datetime string that's in this format "hh:mm:ss tt MM/dd/yy".The error im getting says its not a recognisable string datetime format.
View 15 RepliesWhats the best way to convert a list(of string) to a string with the values seperated by ,
View 3 RepliesIs there any way to convert null terminated string to normal string.I mean I can easily make a program to find the location of vbnull but there has to be a built in function for that.
View 1 Replies