i'm trying to pull information out of my listbox and put them into a set of textboxes. I then want to be able to take the data from the textboxes and the labels i have and save it into my database.
Here is a screenshot of how the form looks
[URL]
The listbox is populated like something from database with 3 fields - ID, Name, Date
ID - Name
1 - John
2- Susy
[code].....
I'm having a problem with my software.
This is are the parts of my system where my problem occurs:
- Search Button
- List Box1
- TotalTextbox
- Button
- SQL Database with a Column named "Amount" and it only contains numbers Datatype is System.String
So, basically a user clicks the Search button and searches for a data in the SQL Database, and the result of the search displays in different Listboxes including the "Amount" Column from the database, which has it's own Listbox named "Listbox1". the Listbox is now filled with numbers.
Goal: The goal is to get the Sum of all the "Numbers" Displayed in the Listbox1, and the Total is then Displayed into a Textbox via using Click event or automatically.
The Code:
Dim sum As Double
For x As Integer = 0 To ListBox1.Items.Count - 1
sum += CDbl(ListBox1.Items(x))
Next
TotalTextBox.Text = sum.ToString
And i got this Error: Conversion from type 'DataRowView' to type 'Double' is not valid.
I ended up with this..
Dim sum As Double
For x As Integer = 0 To ListBox1.Items.Count - 1
sum += Val(ListBox1.Items.Item(x).ToString)
Next
TotalTextBox.Text = sum.ToString
But the values are not adding up, the total is always at 0. i've been searching for hours now from the net to a better way of doing this.
Here's a quick Flow on what im trying to accomplish here. Record from Database -----Displays on---> Listbox1 -----User Clicks--> Button1 ----Displays Total sum on----> Textbox1
I'm having a problem with my software. Im totally new to Vb.net and only learning through ebooks and google.This is are the parts of my system where my problem occurs:
- Search Button
- List Box1
- TotalTextbox
[code].....
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?
View 18 RepliesOk, so I`ve been studying a bit of VB lately.. bought a few books and read lot`s of articles and seen hours of instructional videos, and I slightly start to get the hang of a few things.. :) I`ve recently started a fun little project, but I seem to lack a bit of knowledge to reach my goal. I`ll first try to describe my project:
[Cde]...
I am using a TextBox to search in a ListBox.My requirement is to search the list box for the string entered in the TextBox and if the string is found select that row (this work fine) and then look for a second occurrence of the string and if none is found set the TextBox text to the value in the ListBox selected item.
[Code]....
I have Editbox1 and Listbox1..Inside Listbox1 are the items "#FIRSTNAME# " and "#LASTNAME# "How would I go about adding the text in Editbox1 BELOW the item "#LASTNAME# " in Listbox1 ?
View 3 RepliesI want to add all items from a listbox to a single textbox like this
Listbox:
1 2 3 44
I want the textbox to display the items in the textbox like this (including the dashes and spaces):
1 - 2 - 3 - 44
How do I add text box text to a list box?
View 3 RepliesI have an application in VB.Net that displays the results of a math operation to a listbox. For example I have the 12345 + 12345 = 24690. What I'm trying to do is to have the first 2 numbers (12345 and 12345) copied to 2 different textboxes when listbox item is selected. Here's the code I have so far:
'Make sure that we have a selected item before continuing
If listBox1.SelectedIndex = -1 Then
Return
[Code]....
During runtime it only works with index 1 when it gets selected. I have 10 records being displayed (0 to 9). None of other indexes are being shown at the textboxes.
I'm currently pulling in records from a text file into a textbox control (see code below). I want to get more control over this by adding multiple columns and want the ability to select 1 line or multi-line and "delete selected". I believe this should then be a listbox but can't figure out how to convert my code to work with a list box.
Private Sub btn_fromFile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_fromFile.Click
btn_fromFile.Visible = False
btn_fromManual.Visible = False
[code]....
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.
View 7 RepliesI currently have a massive list of names and want to narrow it down via a filter from a listbox. I honestly am new enough that a datagridview is beyond me and something I want to tackle eventually, but this is the last thing I need to roll out the project and just want to finish it.So I am running the contents of the textbox through an if statement and populating a new LB based on the results:
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
If TextBox1.Text = "" Then
[code].....
I want to sum the first column put the textbox1, second column put the textbox2,third column put the textbox3 I have only cod to break items from listbox1. Dim m, n, c As String
[Code]...
I did bind the list box, the bind table contains prod_id, prod_name
on the list box task,i made the displayed member is prod_name, the value member is prod_name and the selected value is set to none
what i would like to happen is, when the user clicks on the value(product name) in the listbox
that value would be passed to 2 textboxes(hidden), yes im getting the product name on the textbox but i want to get also the prod_id
TextBox1.Text = ListBox1.SelectedValue.ToString
Private Sub frmStudentScores_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
ListBox1.Items.Clear()
ListBox1.Items.Add("Joel Murach|97|71|83")
ListBox1.Items.Add("Doug Lowe|99|93|97")
[code]....
The code works accept for the txtScoreTotal I need to Add the Numbers together but all it does is For Example Joel Murach|97|71|83 it will put 977183 Instead of actually adding them together.
This is probably just a basic thing but for the life of me i can't figure it out XD i have data being entered into a listbox (card values that have been drawn) i want these to be totalled up into a textbox.how would i go about coding this and would it be in the listbox or the textbox code
View 1 RepliesHow 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. How would I do this?
i have 1 listbox and 10 textbox on my form in the listbox there is 40 names is there anyway i can click a button and add line one of the listbox to textbox 1 and line 2 of the listbox to textbox 2 and etc. and also remove each line from the listbox after added to the texbox.
View 1 RepliesHow Can I Make Button 1 be pressed and all the text in listbox1 will be transfered to textbox1. I am using VB Express 2010.
View 4 RepliesI'm doing a win form application in visual studio 2008 and using 7 listboxes where my sql query will populate all customer from customertable. It's 7 cause it's one for each day, my problem is to get customerid when I select one of the customers from any of the listboxes to my textbox. Since there are 7 listboxes I can't use "data bound item" function, in that case it would be easy to write code like this: textbox1.text = listbox1.selectedvalue.tostring(
View 6 RepliesI am making a random name generator. what I got is a large list of first names in listbox1 and a large list of last names in listbox2. when I hit a button, I am randomly pulling a name from both listboxes and putting them into 2 textboxes. for some reason they arent always random. I would say out of 50 names I will get 2 or 3 sets that are identical. why??keep in mind I probably have 400 first names and 200 last names. I should never get a duplicate! here is my
'randomize first names
Dim rnd As New Random()
Dim randomnumber As Integer = rnd.Next(1, ListBox1.Items.Count)
[code]....
i want to split textbox to listbox
example place a question mark in the place where you want to fill the number. if you want fill series like 1spider 2spider then type ?spider in textbox in the series box and type the from number and to number in the boxes
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
If ListBox1.Text = "kg" And ListBox2.Text = "lbs" Then
[code]....
[code]....I have a dialog that comes up and asks for a reason for declining the business.I don't want the code to move on after not enabling the "me" until the reason has been entered and saved into the database. Also, at that point where it says "I WANT...." I want to copy the textbox fields into a new database and then delete this entry from the database, how can I do that. I am using VS 2008 and SQL.
View 2 RepliesI don�t want to use built-in data binding through Visual Studio, I would like to learn and code directly. I have created a form with a listbox on the left side and several texbox on the right side. I have code working that populates a listbox from my data reader (MyReader). The listbox works fine. There are two (2) buttons over the listbox to select All Active records or All Inactive records that queries the field �Status� in the �tblAdvocates� table.So the listbox works fine. Problem is trying to setup the SelectedIndexChanged function. I can�t figure out how to take the selected record from the listbox and use that to fill the textboxes. Do I �re-query� the database using the ID field from the table? Do I use the MyReader from the form load code and pull the data from that?
Here is my code:
Imports System.Data.SqlClient
Imports System.Windows.Forms.ListBox
Imports System.Data
Imports System.Data.OleDb
[code]....
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
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
[code].....
I Know how to Search in a Listbox[code]...
While user enters character "w" then "w" should appear in the textbox.Now if user enters character "h" then "wh" should appear in the textbox .Now suppose user enters character "e" Then "wh" should remain with a beep means "e" should not be written in the textbox.