how to calculate "InvTotalTextBox" and "InvDiscountTextBox" values then show the result in "InvNetTextBox"..?
how can i do..?
three TextBoxes in a form
InvTotalTextBox, InvDiscountTextBox and InvNetTextBox
InvTotalTextBox is Binding with Table Field "InvTotal"
[Code]....
I Have a datagrid with Item, Description of Item, Qty and Price.I would like on the 1st txtbox display subtotal depending on the quantity, price and add a tax textbox and the subtotal all from the datagrid to to those textboxes.
I already have all of that on my table of Products.
I use this code to save some TextBox values to XML, but when I try to save some more, it overwrite the first one. What am I supposed to do in order to save more contacts?
Imports System
Imports System.Xml
Private Sub ProsthikiBTN3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ProsthikiBTN3.Click
Dim settings As New XmlWriterSettings()
settings.Indent = True
[Code] ......
I have a textbox called textbox1. I wanted to limit it to only two characters, so I added the code TextBox1.MaxLength() = 2, however this textbox is for user input and only want to allow numeral values 0-99. And if the user entered a non-numerical value an exception would occur so I need help on to handle that.
View 2 RepliesI have 5 textboxes named as txt1, txt2, txt3, txt4, txt4. Only numbers are allowed in these fields. I have another textbox named txtSubTotal which is calculated (SUM) from the values entered in the above five textboxes. What is the best way to calculate totals when numbers are entered or modified in any of the five textboxes?
View 2 RepliesSo far I have code for a textbox that limits the value entered by a user to two value places. However, I would like to limit the value entered by a user to numerical values only. And to handle any exceptions that go along with it.
View 2 RepliesI have a textbox called textbox1. I wanted to limit it to only two characters, so I added the code TextBox1.MaxLength() = 2, however this textbox is for user input and only want to allow numeral values 0-99. And if the user entered a non-numerical value an exception would occur
View 3 RepliesI want to enumerate all of the values within a given registry subkey (for example 'HKLMSoftwareMicrosoftWindowsCurrentVersionRun')
View 4 RepliesI trying to draw a bar chart based on the five values getting from the user via textbox...When i run this program no error is occured, but the chat is drawn...Can anyone please help me out in this regard.
here is the code i have so far
[code]...
I've a got a homework assignment that chooses one of four values in a list box, stores it in a text file. Secondly, on the display click event it should access the text file, read the line, store it in a variable and then display the totals in a text box. Works sort of fine except that it doesn't display the totals correctly. Code for both buttons is below. The variable are assigned in the mainform (Tried also in the display button and didn't change anything). The save button works fine and stores fine in the text file, it's just the reading that's the problem.
Private Sub saveButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles saveButton.Click
'save the new vote choices to a file
Dim votes As IO.StreamWriter
votes = IO.File.AppendText("votes.txt")
Dim voteSelected As String = CStr(commercialListBox.SelectedIndex)
[Code] .....
Dim
Field1 as
Integer
() = {0, 1, 2, 3, 4, 5, 6, 7}
[code]....
I have to calculate 360 values, for every degree 1. I've calculated all the values but my problem now is that i have to put all of them in a graph with x and y axes that are labeled but I don't have a clue how to begin.
View 39 RepliesUsing VB.Net (Windows Application)[cod]e...
f1 = a + b * c means i have to pass the value a = textbox1.text, b= textbox2.text, c = textbox3.text
How can I calculate the values in a date. [code]
View 4 RepliesCalculate Values On Datagrid?[code]...
View 12 RepliesI have text1=a, text2=b, text3=c, text4=d, text5=e
Now I want to calculate the average of the values,
Here's a simple way
average=(a+b+c+d+e)/5
But what if i have values only in 3 textboxes, that means the code will still divide the sum of the values into 5, that will not be correct!
I am trying to write a function in VB.NET that takes a value and returns it's y-position on a Bell Curve.
View 4 Repliesam trying to calculate the values in rows in column 6 based on values of column 5. Bellow is the the code I am using I get a run time error about the string not formatted properly
[Code]...
How to display/calculate matching values to text boxes in (Service Details Group) and transfer/calculate it all to Rich Text Box (TOTAL $)
View 4 RepliesI'm trying to calculate an average no from data imported from a text file using streamreader. I'm not sure how the loop should read, and the result (average) I want to hold in a separate variable for future use.[code]...
View 1 Repliesi am doing a small project for my business and i got stuck with this 2 weeks ago and still no progress.
I have an access db table "store" that has columns: (filldate,brand,model,plateno,mileage,litres) where i am storing these info each time a car in my company fills gas. For example (8/25/2011,Renault,Megane,5487844,3943,20).
What i want to do now is to display in a datagrid the total consumption of gas (litres) with the kilometers driven (mileage) between 2 dates.
In the discussion in this thread: [URL] it was reveiled to me that vb.net, using double, could only calculate values up to 18 digits after decimal.... so I started thinking and came up with this class
Public Class LargeNumber
Private pNumber As String
Public Sub New()
[CODE].............
I want to split the string into a series of doubles.... and than combine them into a large number.... The size of each double component should be 18 digits on a 32 bit computer... so that I will have room to add the last carrier...
To pass decimal values to radio buttons so I can calculate an output answer. it is a tip calculator. I am using radio buttons as options to choose what amount to tip, ie. 10, 15, and 20%. I need to figure out how to pass the value to the buttons in code so I can calculate the tip amount.
View 1 Repliesm trying to calculate the width of a textbox given x number of characters. So how, given a random instance of a textbox and a random number of characters, can I calculate this? little extra spacing is allowed - for example if you were basing the widthupon the greatest width of a character given the current font. Actually, this is preferable
View 4 Repliesdoes anyone know how to calculate a textbox string to be a CRC16 value?
View 7 RepliesI am trying to calculate two columns in a DataGridView. The first column is the points column and the second column is the Rental_charge column. I would like one text box to display the total of points and the second text box to display the total Rental_charge.
Private
Sub Rental_ItemDataGridView_CellEndEdit(ByVal
sender As
Object,
[code]....
I'm using Visual Basic Express 2010. I have the prompt, the textbox and the calculate button. For the answer do I have to make a separate label for the answer in seconds and the actual response "That will take (separate label for answer) seconds" I made a click event button and assigned the following as global variables at the start of the form:
Const intSpeed As Integer = 1207
Const intTime As Integer = 3600
Then I made a click event for the button. I don't know what the formula is. Basically the user inputs a distance in the box, the calculate button tells you how long it will take for the vehicle to travel that distance in seconds.
Here's the interface: [URL]
Criteria:
Are We There Yet?
The Thrust SSC, a super fast vehicle tracked at 1207 Km per hour (750 mph) was clocked on the Black Rock desert back in 1977. Build an application that will tell people how many seconds it would take to get to their destination if they were driving the vehicle. Of course this doesn't include having to stop for stop signs, travel through school zones, or slow down for corners.
You need to include the following:
1.) Design the application with a prompt label and textbox to collect the distance from the user.
2.) A calculate time button
3.) The form must have the text property changed to read "Are we there yet?"
4.) The objects must have both the Text property and Name property changed to an appropriate value.
5.) A constant global variable should be used to represent speed of the vehicle.
6.) A constant global variable should be used for seconds (there are 3600 seconds in an hour)
8.) A local Dim variable declaration can be used within the button click to hold the distance value.
7.) Variables should be declared with the most appropriate data types.
8.) Include a "Text Changed" event to reset the time in seconds to a blank value when the user starts entering in a new distance.
9.) Comment code should be included
So I need to get a button to take the number that a user enters into a textbox, calculate the factorial from that number, and display it in another textbox. I can't seem to get this to come out right.
Here's some of the code I've been playing with.
Private Sub btnCalculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculate.Click
Function Factorial(ByVal txtFactorial As Decimal) As Decimal
If txtFactorial <= 1 Then
MessageBox.Show("Enter a number greater than 1")
Else
txtAnswer = Factorial(txtfactorial - 1)
End If
End Function
Now I have to just work out the code part. Can a function be under a button? I'm getting an error about that. I'm also getting an error about the txtAnswer=Factorial(txtfactorial-1) part of the code.
1.prompt a text string in 0 to 20 characters and then pass it as a input parameter to a Boolean-valued Function to check if the string is symmetric or not. Display the result.
2.The Einstein's equation E=mc2 relates three variables, E, m, and c. create four TextBoxes, two for the names of variables (E, m, c) and the other two for the values of corresponding variables. Based on the entered names and values, calculate and display the unknown variable in another TextBox.
I'm using a pattern of buttons verticle, & horizonal, to produce a 2 dimensional matrix (6 deep, 25 wide .) The sequence is repeating, but offset from horizonal line to line. the values are 1 thru 12. there are corresponding files in the "My.resources." file carrying names related to the buttons. If the "my. Resources" filename is say.., "1,3,4,6,8,9,11,12 " & the buttons pushed have produduced the string "1","4","6" then the prestated file carries all these values, and therefore should be selected. All integers of the textbox list must be present in a "my.resources" file to show the file. There will be multiple files in the resource file that will fit. (My ultimate intention is to show all files that fit, somehow. I'll have to, eventually. I'm still writing this, and changing it constantly. )the question is, "How do I get the computer to link the textbox integers to the resources files? Textbox = "1", "4", "6" to My.Resources.1,3,4,6,8,9,11,12
View 1 Replies