i just write code for application, in which data is get by user and entered data is to print in a particular format?give me a code for vb.net button by which after click on it will print entered data?
View 1 RepliesI'm VERY new to VB, and haven't coded since the TRS-80 days. I;m attempting to write code to read several NMEA ports and format the data for archive. When I execute the following on a port with the device turned off, the readline instruction hangs. can someone point me in the right direction to handle this exception.
View 1 RepliesPossible Duplicate: DataGridView - Validating for Cell?i have a requirement. i dont know how to get the data from the datagrid after the user entered data in textboxcolumn. i also want to validate the entered text in datagrid cell.
View 2 RepliesI have used following code to create and write the user input data to XML through Dataset. Hope it can be understood by looking the following code:[code]But the above code is not working. it is not writing the value in XML file.
View 8 RepliesOk so I have designed a program to figure out commissions for phone sales at my company. Since the devices we sell and their associated prices change over time, I had to make that data within my program dynamic. I have a form within my program (frmprice) that has 160 textboxes - 80 for the devices and 80 for the associated prices. Now I hard coded the .text members with default values for our current stock of phones and prices.
I also added code so whenever that form with the phones and prices (frmprice) closes it saves any changes that have been made to either the phones or prices and when the form loads it overwrites the default data with any data that the user had entered at last run.
HERE is my logic problem. At the very first run the program is overwriting the default hard coded values with "" because no user data has ever been entered before. So when the form with the prices loads, it passes the user entered data from last run which is null because it has never run before. If I test to see if default value <> the user entered data before it executes the code to pass the user entered values it will always test to be true because the user entered data is null at first run. If I test to see if the default value is = to the user data it will always at first run test to be false because there is no user data yet.
HOWEVER once the user entered data is initialized (anytime after the first run) I need the program to pass the user data from the previous runs back in. Just NOT at the first run. Here is the code i am using: (in the code below the variables ending in "val" are the ones that are of the type string and are saved in the application settings) The frmprice_Load Event:
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I've got a (hopefully) quick question. I've got textboxes attached to a binding source on one of my forms, and when I add, then clear, the data for the next entry to be added a small problem arises. If the user has previously entered something into, for example, Textbox3 and the user does not have the data for Textbox3 the user cannot move to the next field unless something is entered into the box.
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I am trying to show message when user didn't enter any data in datagrid and click on save button it should display message please enter the required fields but I am using this code for this purpose.
For Each cell As DataGridViewCell In DataGridView1.Rows(DataGridView1.RowCount - 1).Cells
If cell.Value Is Nothing OrElse cell.Value.ToString = String.Empty Then
MessageBox.Show("Please Enter the Required Field(s)!", "ITPCHR", MessageBoxButtons.OK, MessageBoxIcon.Stop)
Exit Sub
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When I click on save button without entering data it give me message please enter the required fields but when I enter the data in datagrid it didn't save data and gives same message please enter the required fields.
We use a database to create Data Collection forms with dynamic items
I used this code to generate labels and textboxes from a table in database (when the user hits the button "load CRF")
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click[code]...
I wish to build and display a simple diagram that is built from data entered by the user. Because I can't post a picture of the types of diagrams here I'll use the following example. Image a picture of a house as a child might draw it a large square, with a triangle for a roof, a rectangle for a door, and two smaller squares for windows. Now I want to build an application that lets the user enter data and change that drawing according. For example, by entering the length and height of the house the size changes, change the number of windows, size of the door or height of the roof.
Now this may seem like a useless application but keep in mind the house is just an example the real purpose is different but should be as simply drawn. I'm looking for suggestions on make this work. Should I use a paint? or is something like this better done with a tie into the Visio references?
$GPRMC,115432,A,2218.3118,N,11410.8105,E,0.0,204.9,050209,2.0,W,A*01
$GPRMB,A,,,,,,,,,,,,V,A*1C
$GPGGA,115432,2218.3118,N,11410.8105,E,1,12,2.0,18.4,M,-2.1,M,,*6B
$GPGSA,A,3,05,09,12,14,15,18,21,22,24,30,31,47,3.5,2.0,2.9*3D
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give me a hand on read data from TXT format file, and how to read selected data only (RED) at $GPRMC
i am just developing a library management system as one of my project. i using vb.net 2010 and the MS Access 2007 as back end. when i save some records into my database through my application it is correctly saved and i confirmed it through opening the relevant table in the database. but when i restart the application all the entered data were missing.
View 1 RepliesI want to write the data to a file which in an format that is only understandable by my program, and if any one opens it in notepad must not be able to read(understand) it.
View 8 RepliesI have a software that writes data to Excel sheet. I'm using Microsoft Excel 11.0 Object Library for this. Everything is working fine so far, but apparently the drivers require Microsoft Office installed onto the computer.
Is there a way to write data to Excel format without having Microsoft Office installed?
I have already wrote my own Registration checking software in VB.NET, however I wanted a Special key that I could use in the Registration, and I want to get this from the user, so when they download my software I will with online feature send them a Serial Number, which they will enter when they install the software, I then want to write it to the Registry using the Setup and Deployment project, so that my application can retrieve it every time it is run to check Registration.
View 1 RepliesI want to access (read/write) the user entered text for a document.The document text is housed inside a CONTENTEDITABLE DIV tag within a html document.The html document is loaded into the webbrowser object (webbrowser.navigate(path and filename)).When the html document (bulletin.htm) loads,An error is popped up such as ACCESS DENIED to toolbar.htc and menu.htc And the toolbar and menubar are missing or corrupted.I have tried to generate the code for the document using the code below.
Function ScriptEditorHeader() As String
Dim sBuf As String = Nothing
sBuf = ""
sBuf = sBuf & "<html "
[code]....
I am trying to essentially allow the user to merge data from a database onto a document and print it. I am new to working with the PrintDocument, but I believe this would be the way to accomplish this. I know how to print the text onto the PrintDocument at a certain position, but what I am trying to figure out is how to deal with the coordinates of the text I am drawing on the PrintDocument. Ideally, I would love to click on the PrintDocument in a PrintPreviewControl and capture the coordinates of the PrintDocument.
View 9 RepliesI crated a VB.NET program to write some data to registry. Its working proprely the user loged on Administrator user. But its not working when loged on guest user. Its shows error like
View 4 Repliesi have a problem with the sales transaction. i need to show all the product purchase and i need to show it on the data grid but everytime i input a product it keeps on replacing the data i entered. need code for adding data in the rows of data grid.
View 1 RepliesI'm trying to figure out a way to validate the user data entered:
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This is in MVC3, VB.net. I'm looking for an easy way to validate a users input data into the editorfor field.
The problem is I am able to extract the data by giving cell reference like: TextBox1.Text = objWorksheet.Cells(5, 2).value
But I want to select a row as per input given by user and want to extract data from that row.
The input given by user is in text format, in my case name of employee. And I have to extract address of that name.
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I would like to write a code to read data from .gpx file, but I get stucked with classes: I have a problem with creating working array of objects in object and setting or getting data from it.
I wrote this:
Module Module1
Sub Main()
Dim i As Integer
[code]....
but I get always the latest values of points for all slots of array... Lets say we got 3 points as an input: 1. lon: 5, lat: 1; 2. lon: 2, lat: 3; 3. lon: 4, lat:9. I always get the same values for i = 0 to 2... lon: 4, lat: 9.
I am designing a fairly small application to manage a waiting area for a clinical department. There will be a receptionist who books appointments and updates exisiting appointments to say that a patient has "Arrived". In seperate rooms will be nurses who call patients who have "Arrived" and update the appointment as "In Session" and finally as "Discharged". The appointments are viewed in a flexgrid with nurses across the top and time down the left, patient names are displayed at the relevant times and the cells are shaded a colour to represent the current appointment status ("Booked", "Arrived", "In Session" and "Discharged").
I am using SQL Server as the back-end and Visual Basic 6 (I know) as my front-end.I have been told that there will be 2 or 3 nurses plus the receptionist logged in to the system but I would like to cater for growth.My question is what is the best mechanism to use in order to reflect the status change made by one user on the screens of the other users currently logged in?
I have been thinking about using a timer to refresh the data at a set interval but I do not want to keep hitting the server excessively (although what is considered excessive? we would be talking about a call for data every 60 secs per user). Plus the server could be serving data for many other applications so this is another consideration.Alternatively I have been thinking about sending some kind of message via Winsock to the other users notifying them of data changes as they happen. I don't have a lot of experience with this and am concerned about clients not receiving messages and users seeing old data. It also seems strange to me that once the days appointments have been retrieved from the database that "in theory" a client could go the whole day without having to query the database again to pick up changes - kind of scary.Some information on the data:We would probably be looking at around 100 appointments per day We capture patient name, date of birth, date and time of appointment and appointment status.What is the standard approach / best practice for this kind of scenario?
I'm having difficulty figuring out how to run different programs with my VB program. Using Excel and other MS office programs is easy enough since I just add in the relevant COMs, but I can't for the life of me find out how to run other programs. I promise I spent many hours searching before bothering you kind folks here! I'd think this is a common issue so maybe I haven't been searching for the right thing.how to write code that will control and read data from applications.I know you can do "Process.Start" to open any application, and it looks like there are ways to determine the controls available on an open application, but I can't figure out how to do it. Is this possible? Or do I have to import a .dll file for every program I want to control? Or are both possible?
View 12 RepliesI'm trying to write some code which parses data and then populates a listbox. I'm using the IPWorks IPPort component which basically does the reading of port 30003. The ipport1_OnDataIn event is where all the action is. I parse the data, which works great.. however when I try and do something simple such as add text to a listbox, I get the dreaded error "Cross-thread operation not valid: Control 'lstListBox1' accessed from a thread other than the thread it was created on".I've googled the error and tried copy and pasting some workarounds but nothing seems to fix the issue.
If anyone can offer help, it would be greatly appreciated. If you could possibly show the code already implemented into mine, it would be even better so I can see how it works. It would make more sense to me. My code is below. The part i'm trying to get working is the lstlistbox1.items.add("Test") in Case "2". This is to just get it working.. I'll be adding listbox items in the other cases as well, and they'll be parsed values instead of "Test". This is just to simplify things at the moment.
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I work in an engineering design house and programming is not my actual profession. And I am relatively new to VB .net (previous i had worked in vb 6)
I am working on an in house application. I am coding a simple application in vb .net. This applications takes a few inputs from user and calculates a result. Now I want to implement a simple functionality that user should be able to save the input and results just like most of the windows programs can in a new file format. And user should be able to open the save file when desired.
I Create an application that when a user enters a positive integer value in a input box(the default number is 10) when the OK button is clicked, the application should display a message box with the sum of all the integers form 1 through the value entered by the user. If the user enters a negative value, the application should display an error message. I believe I have to use a loop condition but I have no idea what to do.
EX: User enters 10 in the input box once OK button is pressed a message box pops up and says "The sum of the numbers 1 through 10 is 55". Use the following test data to determine if the application is calculating properly
VALUE SUM
5 15
10 55
20 210
100 5050
Ypos = TopMargin + Count * PrintFont.GetHeight(ev.Graphics)
ev.Graphics.DrawString(ROData(x, 3), PrintFont, Brushes.Black, LeftMargin, Ypos, New StringFormat())
Count = Count + CInt(ROData(x, 4))
The above line prints the data contents of the ROData array in position three. I would like to be able to assign a specific position accross the line to have the printer print the data at without left padding the array data.
i have a form which search data in specific date and show result in the datagridview, what i want is that when delete button is clicked all datas that in the datagridview will be deleted sameway in the database
View 3 RepliesI am trying to write a code which will combine these values and format it in the following format to be used as control/validation ID. I have written a line of code that will merge these values together into a long string but I can't get the zeros to fill in. For month, I get 4 instead of 04 and for numeric value I get 1 digit number instead of having numbers with 0 padding to the left.
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Vb is not my language of choice , but I have to do this for school and I'm not having a very easy time with VB's documentation.I'm just creating a very simple console application that accepts user input: degrees in Celsius, and converts it into Fahrenheit. I want to make sure that if the user just hits enter without entering the degrees in Celsius, then an if else statement will catch and write to enter Celsius again.Here's what I've tried:
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