Forms :: Subtracting A Value From A Text File Via A Button Press?
Aug 23, 2010
I have built a program in where I have to add and remove items from two listboxes. Listbox1 consists of a file which I have picked up on my C:/. Within this file, are different lines of items. At the end of the item line is a figure. I have a textbox in where when someone adds the an item from listbox1 to listbox2. On clicking the add button, it will add the total which was in the file. If I add more items, it will give me a running total of the items I have added to listbox2.
Now, I'm bamboozled in how to subtract the items from listbox2 with the remove button. So that when a user wants to remove an item that they currently placed in Listbox2. On pressing remove it will subtract the running total from the item which has been removed.. Here is my code in where I add products to the textbox. I have two other text boxes which I use to have these running totals. FYI, Textbox where value is outputted is Textbox5. Textbox6 is used to refresh the data and the other textbox is named 'Total'.
Public Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
If ListBox1.SelectedIndex < 0 Then
MsgBox("Please select a Batch")
I have a 'DataGrid' usercontrol on my simple little form and I press a button that opens a text file and populates the DataGrid like so,
A B C 1 2 3 3 4 4 3 1 3
Where A, B, and C are my column headers.
I also have a 'ListBox' on the form. What I would like to do is, allow the user to select one, two, or three rows (or all) in the datagrid, and press a button that will move the data from selected rows into my listbox (each row its own string in the list box).
I can populate the datagrib easy enough, but don't know how to access the cell data individually?
ive been trying for days to try to figure this out out on my own , and im wondering how i can have the user enter a string into a textbox and press a button and have that text appear on a label.
i have 2 forms.in form1: i have 1 combobox in form2: i have 1 textbox and 1 button...I want to make in form2 when i enter some text in the textbox and press the button the text to be added in form1 combobox
Im kinda new to visual basic, and after a days of googling and searching, i havent got answer for this So, i wanna press and HOLD a button down, not just pressing/spamming it fast 200 times. something like sendkeys.send("{HOLD W}"), not like sendkeys.send("{W 200}")Anyone know answer for this? (Answer to unhold would be nice too :') )
i'M making a program for a game a tool software I made that when I press a button in another dialog it appear a text + textboxs.text so when I press a button it appears in the dialog but all in the same line how do I do that when I press the button the textbox in the other dialog says.
i have a question about a code.So when i press a button, some text comes up in textbox1.But what is the code so that after the code there will be an "ENTER" so it will switch line.I think its something like this
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
I want to when you press the start button or stop that it displays a message output to the textbox 1
here is code from another member
HTML Private Sub OnCheckedChanged(ByVal sender As Object, ByVal e As EventArgs) Handles togglecheckbox.CheckedChanged Dim cb As CheckBox = CType(sender, CheckBox)
How do i do this. i want to be able to press a button and the text from textbox1 (25 numbers) will be added as a new line to a list box. i would also like it to save so next time the i open the program the text that went from textbox1 will still be in the list box. i am also using Visual Basic Express Edition 2010.
im doing a textbased game and im stuck on a "mathtest" i gonna do in the game on the form its many things but i just gonna write that i want help with:) [code] i want to make that the label4 (Wrong) shows if the text not "25" when you press the button/
Good Evening! I am attempting to write a code so that someone can enter characters into a text box and then press a button which will validate the string and then count the number of uppercase letters in the displayed text. I also have a button that will allow lowercase tabulation. However I cannot get either to work or display in the associated text boxes.
I have the HTML (I think its javascript) code below that is from the webapge.
I want to pass something from my textarea on my form, to the text area on the webpage, and then pres the submit button the webpage.
I cant seem to find a control that locates the textarea or button..
Here is html:
<textarea id="c4ca7d536c32ca4b6ea674_input" class="UIComposer_TextArea DOMControl_placeholder" name="status" onfocus="CSS.addClass("c4ca7d536c32ca4b6ea674", "UIComposer_STATE_INPUT_FOCUSED"CSS.removeClass("c4ca7d536c32ca4b6ea674", "hide_buttons"window.UIComposer && UIComposer.focusInstance("c4ca7d536c32ca4b6ea674"" title="What's on your mind?" placeholder="What's on your mind?">What's on your mind?
i am using vb.net 2005, in my window form i have textbox as txtbox1 and txtbox2. if i entered any text in txtbox1 and press my tab button the txtbox2 should display the same text as txtbox1 .
I'm current doing a computer course at college, one unit being event driven programming - for this I must design and program a till interface?
- One being on each form I have a virtual receipt named lstbox, and I have multiple forms! The problem is the content of each form is not transfering to the next virtual receipt on the next form e.g. drinks selection form 1 you select a tea, it adds to the virtual receipt, but when you hit the button to go to the next selection form, the content of the virtual receipt does not carry over. Could you please help me ?
- Secondly, I have a payment form on my till interface which obviously allows the user to finalise the transaction by taking payment from a customer, what would be appropriate code to use for when working out customers change e.g. If you hit a �10.00 button for customers change, and the charge of the transaction is �6.00 - I wish for an output of amount of change to go to the customer!
Note - I have a vat, subtotal and total text box for where the data displays. So whether to take away from the total text box and work out change that way, or to use the correct variables in my program such as itemcost variable, order variable etc.
Events - - Selection of item - Private Sub PictureBoxchocolatebrownies_Click(sender As System.Object, e As System.EventArgs) Handles PictureBoxchocolatebrownies.Click
I want to create one help file for my whole application. and once user press help button next to any input control then appropriate help topic from file should get display. how can i create this functionality in vb.net?
What control should i use if i want a button with default text on it and when i press on it, it give a drop down menu that i can select different commands. I tried a combobox which seems to be very close to what i want. i set the dropdownstyle to dropdownlist so it looks like a button. but i cant seem to set a default text on the box and i dont want this text to be in the item list. also when i set the dropdownwidth to a value larger than the combobox width, it will align left.
I have one combobox, two buttons (Add and View) and listbox. When I click button Add text from combobox is added to text file. This is code for Add button:
1. how do I make a button press a certain button in another application? (i.e - for example it goes to application "iexplorer" and press insert, home, a, b, or other button in the keyboard)
2. How do I make a virtual keyboard (for example a button opens form 2 or 3 and when you click on a button in the keyboard it goes to a certain text box in form 1)?
Main Form is my startup form and then 2 buttons on the form button 1 open form2 and main form hidden. button 2 closes and in the form 2 I have a textbox where I write some text and a button to save the text in a txt. File Once I've saved my text in txt. file so I click on a button that closes form2 and open main form My problem is that the button on the main form I should like to have button text is from the txt. file. And I do not know how I reload the button or form.
if I close the program and start it again, then my button text has change to what i write in txt file..
I am using a thread to call a process which is spliting a text file into various text file and folder using the system.io , now when calling the Textsplit() with thread on click of a button i am getting the error below , how to use thread and why this error occurs.
Cross-thread operation not valid: Control 'txtbox_destn' accessed from a thread other than the thread it was created on.
I am writing a program that programmatically generates buttons based on database information. The buttons CANNOT be more than 75,75 in size. The problem is, if the text is longer than 9 characters, it moves the rest on to a second line. How can I make the font size automatically adjust to have larger text if it can, and if not, have smaller text to fit on one line
i want to make the Grid view Button(Time In) invisible until the User press Time Out Button. Once the user press the Time Out Button,Time in Button must be shown
I have a form with a panel on it that is attached to 3 buttons that when pressed display a different image.How do I make the panel cycle through the images on pressing the "Z" key for example?
Public Class Master Private Sub Master_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
I Have A App That i made all i wish to do is hit enter and it will press buttoI under stand that i could maybe just submit the data that is in the text box but i don't wish to do so. i just want to set up keys so i don't need to point and click.
I have 2 buttons on my form. Button 1 and button 2. When Alt+A is pressed (when you hold alt and press A), I want button1.performclick. when F2 is pressed (the one above number 2), I want button2.perform click. how to do this?
I am new to Visual Basic.NET and I am just playing around with it. I have a book that tells me how to read from a file but not how to write to the file with a button click. All I have is a button and a textbox named fullNameBox. When I click the button it gives me an unhandled exception error.[code]...
