Temperature Conversion - Final Result Not Displaying
Mar 23, 2010
I am currently writing a code that prompts a user if they want to convert F to C or C to F, two functions with the calculations. My problem is my loop, it exits one time through and doesn't prompt again. And also doesn't display the final result.
' VB Script Document
option explicit
const menuBar = "Temperature Conversion"
Dim userPrompt, prompt, Temperature, toCelcius, toFahrenheit
prompt = vbOk
Do While prompt <> ""
[Code] .....
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Oct 13, 2010
I am having trouble displaying my results from a temperature conversion program. I am sure it is something simple that I have overlooked. Here is the code.
[Code]...
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Nov 19, 2010
this application for computing the gcd but it give me just the value for first iteration but i need the final values of x2 y2 a
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim x1 As Integer
Dim x2 As Integer
Dim y1 As Integer
Dim y2 As Integer
[Code]...
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Nov 20, 2010
phi(n) to any number in this code give me one?
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim n As Integer
n = CStr(TextBox1.Text)
[code]....
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Aug 9, 2011
THis code extract a value from a table to a var...
Dim var_IES_fornecedores as double = 0
For Each dRow In ds.Tables("Tabelavalor").Rows
If dRow("numeroconta").Equals("221") Then
[CODE]...
This is the problem...the numbers after the period should be just 2 and not a lot of numbers...everythin wrong with the code?
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Nov 20, 2010
this application for computing the gcd by using extended euclidean but it give me just the value for first iteration but i need the final values of x2 y2 a
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim x1 As Integer
Dim x2 As Integer
Dim y1 As Integer
[code]....
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Nov 20, 2009
[code...]
So far, my friend has this, and we're trying to figure out how to get the code to tell convert F to C, and back. All we can use for input is (example:) 10,f and it will change it to 40,C.
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Nov 25, 2009
Module Module1
Sub Main()
Dim number1 As Long
[Code].....
My question is I'm trying to let the user input the temperature number and the temperature type at the same time and the program will convert the temperature as instructed
But when I run the program and I type in for example 5,c I get an overflow error but if I just type 5 then it just converts.I'm trying to get the letter to work and not overflow.For example I want the user to have a choice of either typing in a number,f or number,c.
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Nov 14, 2010
I'm relatively new to VB, started a programing course in Uni recently What I'm looking to do is to add the following formulae into the program.
[Code]...
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Nov 15, 2011
i am creating a temperature conversion tool with vb 2010. i am trying to use radio buttons to choose the type of temperature that i am converting to and from.
Option Strict On
Public Class project
Private Sub txbInital_TextChanged(sender As System.Object, e As System.EventArgs) Handles txbInital.TextChanged
[Code].....
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May 2, 2010
I'm new to visual basic and have decided to make a temperature conversion program. I've attached a screenshot to aid in my description. The program reads the temperatures on the left(from text boxes), converts them, and displays the answers on the right in text boxes. The program has a fever check at the bottom which displays whether or not the converted values are a fever.
I've managed to get this to work no problem, but I'm trying to get it so if the user enters the temperatures directly into the "result" textboxes, that the fever check still works. Unfortunately I'm having no luck, the fever check will only display a message if the values have been converted, not directly entered by the user. Here is the code I tried(fever.Text is what is displayed in a textbox above the fever check button):
Private Sub FeverCheck_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FeverCheck.Click
'Turn string values entered into Decimal Values so they can be compared to decimal values
Dim fahrfever As Decimal
Dim Celsfever As Decimal
'The following two lines have problems when debugging
[Code] .....
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Apr 13, 2011
I hav copied my whole cde in form 1 to give a better insight of my question.what I want is to search for a string example title of a song then display my result to a richtextbox but the result should include the title the location and number.[code]
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Oct 3, 2011
I created a small databse program, when I created the search field I wanted to display the results in "listbox" which I found some code that work perfectly
For each row in ds.tables("Tablename").rows
me.listbox1.items.add(row(1).tostring())
Next
but I also need to display "row 2" ACCORDING to the selected item from listbox in a textbox.
since the listbox is displaying the result of a search, it's been hard to find, how to do this?
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Jul 8, 2011
If txtLog is a RichTextBox control:
Dim text = "hi" & vbCrLf
Debug.WriteLine("t:" & text.Length) ' --> 4, as expected
txtLog.Text = text
Debug.WriteLine("tL:" & txtLog.TextLength) ' --> 3. muh?! :(
Having looked at the RTF spec, the end of a paragraph is notated as par, which is neither CR nor LF. This makes sense since RTF is markup language; like in HTML, line endings have little meaning on their own.
So presumably, on writing into the RichTextBox, my line ending is being encoded into par. And then, on extraction, the par is being translated back to a real line ending for use.
It turns out that this line ending is vbLf.
Why, since Microsoft near-consistently employ CRLF for line endings, would RichTextBox translate par to vbLf instead of vbCrLf?
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Jun 2, 2009
I am building a scientific calculator.
1. After I clicked the Sine button, I get the result in a textbox.. When the result is there, for example: 1 radians Sine = 0.8414.... I can still put numbers at the end of this result.. like button 5 will be 0.84145, so how can I disable that?
2. After I get the result from a calculation, the textbox should be cleared when I insert a new number.
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Feb 23, 2011
Im writing a program and its pulling data from a .MDB to put in a .DAT file.
Here is my while loop:
vb
database_connection()
sql = "SELECT * FROM tlalist"
[Code].....
In my database there are currently 6 rows. and only 1 row has the TLA_DAY column equal to 1, but for some reason when I look at the .DAT file it creates it outputs the result twice rather than only once.
Once JTLA_count increments it becomes "2", but the while loop still outputs as if its still equal to "1". Ive used breakpoints and the counter is incrementing fine.
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Oct 22, 2009
I want to use explicit conversion (CType function in VB.NET) to convert the variable d from double type to integer type and store the result as 132.
Imports System.Console
Module Module1
Sub Main()
[CODE]...
This is my code. But Visual Basic tells me an error: Error1Type 'i' is not defined.C:\Users\mihaispr\Desktop\Conversie explicita\Conversie explicita\Module1.vb1922Conversie explicita
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Aug 22, 2009
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click.[code]the program enters a number and display its factorial, our program has error, eg. if your going to input 7, the result would be {num1}5040.we are having difficulty in its result... the required output should be 1*2*3*4*5*6*7=5040
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Dec 10, 2010
I am currently having a headache on how to solve this problem that i am facing. here is the situation: I have a combobox and a list box on the main form. The combobox will get the data from the ms access database. In the database, i have the details of a person's IC, Name and DOB say for eg on one entry I have D215311523C,SHAWN,13/04/1987 So now, my combobox on form load will show the list of dates in the database to allow the user to search base on the date itself by clicking on the selected date. So when the user clicks on the particular date say 13/04/1987, people in the database whose birthday is 13/04/1987 will be shown on the listbox.Meaning to say if i have 3 entries whose dates are the same 13/04/1987, 3 entries will appear. If there is only two entry, then two results will be shown. But now, when i do a single click on the date, one result will be shown. That is correct. But the problem is when i click on the same date again, three of the same results will be shown on the list box. that is it will display : 13/04/1987 13/04/1987 13/04/1987 which is not the case. Then it will show more duplicates of the same results if i click more times on the same date which should not be the case.
Dim n As Integer
Dim numbers() As Integer
Dim StartFrom As Integer
Dim EndAt As Integer
[code].....
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Sep 25, 2010
I am using a datagrid in my where i am having four columns. In first column the parameter values are entered and in the second column measured value is entered and in third column the nominal value is entered.Inthe fourth column the result is displayed by subtracting the measured value and nominal values. I am doing this calculation in Datagrid cell validated event. What i want is,there will be many rows in the grid,when typing the value in the third column the corresponding result will be displayedin the rowof theresult column,save button will be displayed while the form loads,when the calculate part is completed that is there should not any cell of the resut column empty then i should enable the save butto.
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Oct 14, 2009
I am encountering the following issue So i have a device that sends stuff at the serial port, i then parse it and put it into an array of bytes like that:
Dim HCI_Command_Rcvd_Byte() As Byte All good till here What i wanna do is make an array and put this result every time the serial port gives me a new result, for example:
[Code]...
Basically what i wanna do is let the port parse the messages, fill in the array with the result at an empty spot in this array and then i will have a separate thread that will look in into this array in each non empty space and after it looks into the non empty space it will use or discard the info and also mark this space as empty (after it checked)
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Apr 16, 2010
I just read about DataSet in VB.NET, it uses disconnected concept. My question is: if my apps has "List All" button that query data from 1 table in the database, and that table has "very very very" many rows, so my DataSet will be filled with those data and eat up memory. Can I limit the data that being put to the DataSet from that query? But I want to be able to retrieve the next data from the same query if the user want to see it?
For example:
I have 1000 rows in my database, and i query all of them. But I just want 200 rows being inserted to my DataSet, but if the user want to see rows number 201 and so on, I want to be able to retrieve the next 200 rows, and so on. So it just like cutting those data into a group of 200 rows. Can I do this with the concept of "disconnected" of the DataSet?
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Dec 18, 2011
Does anyone know how to implement in VB an algorithm for final differences that changes the network (the matrix) during the computation (decrease its dimensions)?
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May 5, 2011
The program I am making contains many Form ,and I see that adding Forms increase the size of the final .exe . Is there any way to avoid making the large .exe ,as I have came to know that Large .exe is not good and also consume more RAM memory.
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Aug 4, 2009
I've looked up this answer and changed 'build' option to embed the files but I still get a io file not found error. where exactly are my resources located? atm my code is this:
Private Sub TextBox1_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox1.KeyDown
Select Case e.KeyCode
[Code].....
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Nov 5, 2010
Dim Test_Output As System.Byte = 0
Try
For test_value As System.Byte = 0 To 255
Test_Output = test_value
Next test_value
Catch ex As Exception
MsgBox("Exception occurred: " & vbNewLine & "Test_Output is: " & Test_Output.ToString & vbNewLine & ex.Message)
End Try
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Apr 8, 2009
a user will enter a number, n, which ranges from 1 to 30. they will also enter a "P" or an "S" (sum or product). depending on which was selected, it will calculate the sum or product of the numbers from 1 to n.i'm having a conversion error on line 5 stating "Conversion from string "S" to type 'Double' is not valid." [code]
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May 11, 2012
I'm creating a program in VB.net that does the following:At a high level I receive a file in email, put the attachment in a monitored folder, import the text file to excel, format the excel, and then email the excel file to a list of recipients.
Here is my plan:
Completed: Outlook VBA to monitor all incoming email for specific message. Once message is received drop attached .txt file in a specific network folder.
Completed: (VB.net) Monitor folder, when text file is added begin processing
Not Complete: (VB.net) Import text file to Excel
Not Complete: (VB.net) Format Excel Text file.(add in a row of data,format column headers with color/size, add some blank columns, add data validation to some of the blank columns that allow drop down selections)
Completed: (VB.net) Save file.
Completed: (VB.net) Send file to list of recipients.
Obviously the items above that are not complete are the bulk of the work, but I wanted to get some advice on what some of you think would be the best way to approach something like this. The import and formatting of the file are causing me some problems because I just can't decide what would be the most efficient way to do this.
The way stated above. Import to excel -> format Having a template excel that contains all of the formatting already done for me and attempting to transition the data to this document (no clue if/how I can do this). Is it even feasible? Have the template already created and then import the text file to a new excel file, then transition that data to the excel template?
Something I thought about, in terms of formatting the document, was to record a macro of me doing all of the formatting that I'm going to need and then attempt to convert that macro into my vb.net code, but I'm not sure if that will work. I will need to verify that the text file comes in the EXACT format every time correct?
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Sep 6, 2010
I have a BaseClass, a DerivedClass1 and a DerivedClass2 from a third party library. DerivedClass1 and DerivedClass2 both inherit from BaseClass.There's a ContainerClass, from the same library, with a member variable ActiveItem, which can be of DerivedClass1 or DerivedClass2, so it is declared as BaseClass.I want to know if ActiveItem is of DerivedClass1, as it can change in runtime without notice.If I do
Dim isDerivedClass1 as boolean = TypeOf(oject.ActiveItem) Is DerivedClass1
then I get a compile time error, telling me that ActiveItem can never be of DerivedClass1 type.I have tried several combinations of GetType and TypeOf but it doesn't seem possible to check this. I have also tried to declare an auxiliary DerivedClass1 variable and comparing their types, but haven't got any luck either.
Edit:The following code doesn't compile in vs2005 SP1.
Public Class Base
Public x As Integer
End Class
Public Class Derived1
[code]....
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Mar 1, 2012
Is there a way to delete the final line of a DataTable? I use - DataTable.Rows.Remove()But how can I find out which is the final line in the DataTable
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