How To Get Total Sum From A Listbox And Display It Automatically Into A Textbox
Mar 15, 2012
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 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.
Before 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
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 a text box in form1 that displays the total, I want to carry this over to form 2 into another text box as I navigate between them, how would I do this? Also I have a button on form2 to return to form1 but I need all the data that has been input by the end user to be cleared from both forms when returning, again how would this be completed?
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.....
I have 3 columns in a unbound datagridview, "length" "height" and "Total". Total = length x width and the final total in TextBox outside of the Grid. I found question simalar in this forum and tried the code but i am getting errors.The following is the code i am using
i have a datagridview binded with the datatable via its datasource property....now i want to add the Amount column of the dgv and display the total amount in the textbox,if the amount is greater than a certain value then i want the cell to coloured red so i did this code and it worked great:
Dim i, j As Integer For i = 0 To DataGridView1.RowCount - 1 j += Me.DataGridView1.Rows(i).Cells("Amount").Value Next
[code]....
but my problem is that i want the red colour of the cell to blinkafter every 2 seconds....how to do this?i need to handle the timer tick event for this but i am not able to do this.....
How cau I display the very last value of a listbox in a textbox? i.e. if there is 3 items in the listbox it displays the 3rd, if there is 5 items it displays the 5th.
when i click a button , an inputbox should come up taking say 10 numbersthen is it possible to add the numbers that are input into this inputbox and display it into a textbox or msgbox oafter inputting the numbers they will be stored in a listbox and then they will be added together and displayed in a textbox or msgbox
1 listbox, 1 textbox, and 2 buttons (for start, and stop)if I press the the buton for start the textbox will display (one by one) the items in listbox.. and if i press stop the textbox will stop displaying items..is it possible? do i have to use a timer for this?i think i have to use Do While (or Do until) Statement...but..hmmm i don't know..
I've been ttrying to code an app that will act like the VB intellisense, without the added properties. In short, when I type (in a multiline RichTextBox), the letter t I would like the populated listbox show at that point (because "Then" is a word in the listbox) and if I click "Then" in the listbox have it "autocomplete" the word and display it in the color blue.
I know this is a very simple question. But somehow I cannot solve this problem. I have a listbox and a textbox. I want to display the text in the Listbox when typed in a textbox.
How could I link a Listbox to a Textbox? So each Listbox item holds string data, and when I click that Listbox item, it shows it's string data into the multiline Textbox. For example
I have a listbox item names "Numbers". It holds this data:
1 2 45 84
So I want it to when I select this item in the listbox, it display the number data into the multi line textbox.
Suppose der is one database name Customer which have columns like Cust_ID,Cust_Name,Cust_Mob,Cust_Address And on Form der are one list box which contains all Cust_Id from database and 4 textbox so when user click on the listbox having id as 1 it should display name, mob and address of cust_id 1 in 4 textbox respectively?
I 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]...
every 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
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)
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").
I'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.
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.
I 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...]
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
I'm trying to display the total extraction progress of a zip file as below. This gives me the total file size of all uncompressed files in the zip: For Each backup In zip TotalSize = backup.UncompressedSize + TotalSize Next
I'm then using this to get the current bytes transfered: TranferTotal = e.BytesTransferred + TranferTotal
The problem is this value resets after each file is extracted from the zip. I was expecting the above to "tally up" the total so I could use it for the progress bar but it seems to still reset after each item? Also, I'm using a global varible for the transfer total, if there a better method to transfer this information to the StepEntryProgress? The reason I'm doing this is because the DotNetZip Library does not support multiple extraction in this way, so I need to tally up in this way.
Code: Imports Ionic.Zip Imports System.Threading Imports System.ComponentModel Public Class Form1 Dim TotalSize = 0 [Code] .....
This should calculate and display the total amount due. There are 3 radio buttons, A, B, C. Nonprofit should get a 20% discount from final charges.
Public Class Form1 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load End Sub Private Sub RadioButton1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles radA.CheckedChanged [Code] .....
