I dont know how to get the program to do the total calculation after i delete an item from the listbox. Basically i have 2 forms. One is the shopping item list and the other is the shopping cart.
Here is my codes:
Public Class Form1
Public totalBuy As Single
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code].....
This is what I have, but its not working for the total at the end..the IF bit at the subtotal...
Description
Qty
Unit Price
Total
FORMTEXT
[CODE]...
I am having trouble adding a 5% discount to a subtotal of 50.00 or more and then have it display in the discount box and then having the total show up in the total box.
Here is my code.
Public Class GroceryStore
Private Sub CalculateButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CalculateButton.Click
'Calculate totals
Dim subtotal As Double
[Code] .....
I'm having trouble removing both the number of adult golfers and children golfers in a group. I want to remove the item as well as update the order subtotal.
The Minigolf form code
Dim intTotalGolfers As Integer = 0
If IsNumeric(txtNumberOfAdults.Text) Then
If CInt(txtNumberOfAdults.Text) >= 0 Then
[Code]....
I created VB.Net Win Form application in Visual Studio 2008 SP1 that connected to Microsoft SQL Server 2008.The DataGridView was used to connect the SQL Server 2008 and WinForms.When I delete or add records, run into error: Update requires a valid DeleteCommand when passed DataRow collection with deleted rows.
View 3 RepliesI am trying to get a running total to come up in the lstGtotal listbox from the list of totals in the 1stTotal listbox but all that I am getting is the numbers 1stTotal listbox to come up[code]...
View 6 Repliesevery time i select an item from the listbox (just 1 at a time), it'll add that item's price to the total. but for some reason it's not doing it. can someone check out my code and see what's wrong with it? i'm getting the item price as the total (what I want it to do is add onto the total)
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim total, grandtotal As Decimal
If lbSelect.SelectedIndex = 0 Then
total = 10
[code]....
really stuck on one part of the my coursework which is the total bit. Ive looked everywhere but i still have not found a coding that works. Basically i have 2 combo box's (cboUrban ,boUk) and 2 add buttons for each (btnAdd1, btnAdd2) and a lstTrack box. The user selects a song from each catagory and adds the song by clicking on add track button for each combo box the song then appears on the lstTrack box where a total has to be displayed. however i can not find a code for thi! each track costs 1.00
This is my coding so far for each button
Public Class frmMusicStars
Private Sub btnTrack1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code]....
What i have in a text box that is the discount. The text box talks to the label as you type and updates it accordingly The problem is that once the discount_rate.text get to 10 or above the discount is off by 5 cents and increases as the number goes up..
Private Sub discount_rate_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles discount_rate.TextChanged
Select Case radio
Case "one"
If discount_rate.Text = "" Then
[code]....
i need some help i want to add the total of the numbers inside a particular Listbox and the total should be in in Label form Like (Label1.text = "Total").
View 7 RepliesBefore I begin, want to say this is my first post and I am a newbie. My first time using VB. How can I add values in a listbox that were entered by a user to another textbox in total?For ExampleSay my code for now is this.
ListBox1.Items.Add(textBoxValue.Text)
Dim X As Double
X = textBoxValue.Text
[code].....
how to find sum to total item in listbox in vb.net
View 1 RepliesI'm have successfully did a shortcut "+" and "-" button to increase and decrease the qty ordered. But by doing so, i now have problem tabulating the cost for each item. Below is the print screen for my application. You will realised that the Lamb tandoori which is going for $3 cost only $21 after increasing the quantity ordered using the "+" button.In addition, i have created different list boxes for different food categories.Each category's food items is selling at the same price.
<img src "http://img521.imageshack.us/img521/6144/prob.png" />
When i add it up it doesn't add decimals.
Example: 12.5 + 1 = 13
I need it to be 13.5
Code:
Dim total As Integer
Dim counter As Integer
[CODE]...
How to update the total cost after every item is selected and the user clicks enter...
Private Sub calcbutton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles calcbutton.Click
Dim amount As Double
Double.TryParse(amounttextbox.Text, amount)
Dim total As Double
[Code] .....
I am trying to update my table reservation I am just trying to update only on column which is total amount but it is not updating.
Here is my code.
Dim a As Integer
a = MessageBox.Show("Are you sure you want to exit????", "ALI ENTERPRISES", MessageBoxButtons.YesNo, MessageBoxIcon.Information)
If a = vbYes Then
Me.Close()
[Code] .....
This code bellow to find total of digits from textboxs to listbox.This code don't care about how many textboxs on the form.I take this code from Cazypennie..Great code.My question is..I want to change that code from many textboxs to only one textbox MultiLine having 30 Lines of digits to count and appear to listbox.
Option Strict Off
Public Class Form1
Dim BoxValueCollection As New Collection[code].......
I have managed a listbox with two columns (the items and their quantities). I am trying to sum up all the qtys together for a grand total, but cannot manage. I tried with listviewitem.contains and listviewitem. items. Now I'm lost.
View 3 RepliesI am having an issue with trying to calculate a running total from items in a listbox. I am getting an InvalidCastException with the btnCalc_Click event. I think I understand why I am getting this exception, just not sure exactly how I fix it.
I need to have the lblTotalCost display the Grand Total of all the workshop totals. Ca anyone point me in the right direction here, I have been struggling with this part for about 2 weeks.[code...]
Ive got a Listbox which displays a data/record from a SQL database, it displays "Amount" and only numbers would appear. it has a datasource.
Goal: I'd Like to get the total sum of those numbers from the Listbox and Display it to a textbox automatically or by button click event.
I thought of two ways to do this, but I don't have a clue on what to do.
1. I tried summing it all up on that exact Listbox and display the total on the textbox, here's the code that i came up with..
[CODE]...........
But the data im working with is from a database, so i got this error:Conversion from type 'DataRowView' to type 'Double' is not valid.
2. I thought of having another Listbox and "Copy" the contents shown on the Listbox1 and then sum it all up on the Listbox2, then lastly display the Total on the Textbox. I did a little research on how to accomplish that but all the clue i found is that i have to disconnect the listbox data from the datasource from being bound, and reconnect it again.. I really don't have any idea on how i could do that with an SQL database.
Here's a quick flow on what im trying to accomplish to make things.
Record from Database -----Displays on---> Listbox1 -----User Clicks--> Button1 ----Displays Total sum on----> Textbox1
I know how to get Total, Average, Highest and Lower number from using input boxes and so on, but how do you get them from within a listbox?I kno the format of the code, I'm just lost in how to get them from a listbox...I just need a few hints.
View 7 RepliesHow do I code the total cost to give me a pound sign with the total cost at the moment when the total comes up for an example it gives me 3.6 when I need it to show 3.60 here is the code I have so far. [code]
View 2 RepliesI have a basic Table and I can add and save data, but when I try to delete, I het this error:
[Code]....
I am trying to create a textbox that will display the total duration of all video files in a listbox. I am not using the windows media player in the project, I just want to show total duration of the listbox items. I have tried looking for snippets because I'm new to programming and I have also tried my luck at creating a class with no success. If anyone could show me some sample code or tell me what it will take to accomplish my goal it would be greatly apperciated. I am coding with Visual Basic 2010 express.
View 1 Repliesi successfully load data from database to listbox, what i want to do is to add a record and then directly the listbox will update as well as in the delete.
[Code]...
I really am stuck. I can add records to a table ok . when i close and restart my code the new records are still there but deleteing does not work. I delete the records, they disappear. I close and restart the code agian but the deleted records return. this is my code.
[Code]...
I'm pulling the data from a database (via dataset) and presenting in a Datagridview.
I need to have a column to display the total of �amount� column.
How can I do this?
This is not for ASP.NET but for VB.NET 2008.
I'm pulling data from a database (via dataset) and presenting in a Datagridview.
And i need to have a column to display the total of amount column.
I have list box with item priced. when a user select item and add to the cart then calculate it should display subtotal. My error is when I do it again my previous subtotal add to the next one.
this is my code
Option Explicit On
Option Strict On
Option Infer Off
[Code]......
The pay rates for the project are:
a. Level 1 - $10.00
b. Level 2 - $12.00
c. Level 3 - $14.00
d. Level 4 - $16.00
e. Benefit Deduction Rate - 0.10
f. Overtime Factor - 1.5
For ease of program maintenance, all of the above rates and factors must be stored in module level constants. All references to pay rates in the program must refer to the module level constants.
When the Calculate button is clicked:
a. The value in the Hours text box must be validated to insure that it is numeric value greater than zero.
1. If the value is not valid, a message box must appear as shown below and the user must be offered the option to continue processing or quit the program.
2. If the user chooses to continue processing, the focus must be set to the Hours text box.
3. If the user chooses to quit, the program must close immediately.
b. If the value is valid, the program must calculate and display the total pay in the Total Pay label.
1. The pay rate is determined by which Job Grade radio button is checked.
2. For hours less than or equal to 40, the total pay is the hours times the pay rate.
3. For hours greater than 40, the total pay is 40 hours times the pay rate plus the hours in excess of 40 hours times the pay rate times the Overtime Factor.
4. If the Full Time radio button is selected, the total pay must be reduced by the Benefit Deduction Rate.
5. The value displayed in the Total Pay label must be formatted with a dollar sign and with two decimal
places.
6. The focus must be set to the Hours text box.
Why i get an error when i try to run this code
Code:
Also the message box, both yes and no close the program.....