I keep getting an IOException, because the file is apparently already in use. I'm pretty sure I closed every handle, and I don't know what to do.
High-Score
If haswon Then
Dim strFormat As New StringFormat()
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I am doing a project for part of my coursework which involves the creation of a series circuit designer.
I am having some trouble with the saving and loading functions; I had intended to save them to a text file with commas separating the component name and the value (if any) attributed with it.
Grid(xcoord, ycoord, 0) contains the component name. Grid(xcoord, ycoord, 1) contains the attached value (resistance or voltage- components such as wires have a value here of 0)
Once the save button is pressed, the text file contains 50 rows of "0".
P.S. Let me know if any other parts of my program are required.
Dim comp(maxsize) as ccircuits[globally declared]
Const maxsize = 50
Structure ccircuits
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I would like to enable my app to run from a central database, but I dont want to recompile should the DB server change. Are my only two options saving the connection string to an XML file or the registry?
If so I think the XML file will probably be the way I go at least for me. I dont really want to mess with the registry. I just wanted to check what my options are.
I am quite new to VB.NET and I am attempting to create a console application that can write, save, load and edit sets of data. Lets say I have something like this:
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However, I have no idea how to load the data so I can manipulate it in the EMPLOYEE structure system. I am not sure if I have made my question clear enough, for as you can see I'm quite new to programming and am not essentially familiar with the terms of speech.
Is it possible to create a kinda virtual storage in a vb application so that data created during run time are stored right in the applicaion instead of its environment?
View 11 RepliesHow do i fill my ObservableCollection(of Monitors) with data so that I can save it in an MVVM friendly manner. I normally use a FileNumber to load a DataSet using a DataAdapter and pass the monitors table via monitorDT - should I be loading it differently? How do I save the changes? Right now I have the following for loading data:
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How do i fill my ObservableCollection(of Monitors) with data so that I can save it in an MVVM friendly manner. I normally use a FileNumber to load a DataSet using a DataAdapter and pass the monitors table via monitorDT - should I be loading it differently? How do I save the changes?Right now I have the following for loading data:
Public Class Monitors
Inherits ObservableCollection(Of Monitor)
Public Shared Function LoadMonitors(ByVal monitorDT As DataTable) As Monitors
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1) How can I load data from Text file to DatagridView. I want it because I'm making a listener. And when I load a data from text file, i want to edit rows. And this calling the second question.
2) How can I save data, Datagrid to Text file.
I found a code
Dim obj_oledb_da As System.Data.Odbc.OdbcDataAdapter
Public Function ConnectCSV1(ByVal filetable As String) As DataSet
Dim dataSet As New DataSet
[Code] .....
I can load data with this code but I can't save.
My Text File must be like this:
#IP
127.0.0.1 localhost
no beating around the bush, here's the code.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim myXMLFile As String = Application.StartupPath & "creditors.xml"
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I have been given the below form but here i cant understand the use of this checkbox named LoanCredit card number.I am told that when user checks it then all master data will be displayed. does it mean that when i am entering some data in the database then the data will not not appear in the dropdownlist of the creditcard no. combobox automatically,on checking the checkbox the creditcard no. which is saved in the database will be added in its dropdown list? again when i uncheck it then again the dropdownlist of the combobox will become empty?
View 3 Repliesi have a listview and everytime I load a 10,000 data my listview hang up. Is there any alternative on how to load data to listview that will not hang up.
View 10 Repliesam trying to load data from an excel worksheet & its really giving me headache. A particular column contains both string and numeric data. its picking only the numeric data & loading the string data as blank entries. I tried checking what may be wrong, i think i saw a documentation that says Excel scans the first 8 rows of a column & determines it data type.plz, how can i load everything on the sheet (i can get everything as string, but i dont want to lose any entry)
View 3 Repliescolumn name = CustomerName
SQL server database name = SQLDEV6.
I have been given a task to create a application in vb that is supose to load data from a table named tblCustomers from a DataBase.
I am trying to load CustomerName and PrintStreamACNO from tblCustomers to my dropdownlist. I am not getting the correct syntax on the binding and displaying.
Imports System
Imports System.IO
Imports System.Reflection
Imports PSXSTL.Data
Imports PSXSTL.Data.DataAccess
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this is a reference to the thread:he problem I was having while loading data into a datagrid from Excel is solved when I have changed the connection string property IMEX to 1 in:
HTML
con = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & filename & ";Extended Properties=""Excel 8.0;HDR=Yes;IMEX=1;""")
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I am trying to save(export) data from a table in sql 2005. the version of office used is 2007.
I through something together quickly, thinking it would work.. but now I am not sure why its not.? everything seems to work, no errors or anything.. just no excel file either.
Try
Dim strfilename As String = ""
Dim intOpenResult As Integer = vbOKCancel
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I have created a access database and have sucsessfully connected to it.I have three records in it (just for testing) and have got the BindingNavigator to connect to it as well.I can move through the (3) records that I have previously entered, and when I click on the Add Record button it zero's the text fields that I have displayed.When I enter NEW DATA it does not SAVE it.
View 7 Repliesan application i developed using vb 2008 express, to fill a web form with data from an access database, one after another when a button is clicked hasn't given me what i expected. the loop was suposed to stop after filling web form with the first data on clicking a button and continue to fill the webform with the next(2nd) data from the database on clicking the button again. Below is the code i wrote
Private
Sub STARTButton_Click(ByVal
sender As System.Object,
ByVal e
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I am building a chat client/server. And I can connect and chat just fine, but when a user disconnects, the server does not recognize this and acts weird, often spamming the last message that was sent by the user..Also, it's like the client does not disconnect from the server even when I close the client app. Once I exit the program, VB acts like it is still debugging. Once the server is shut down however, I get this error:
IOException was unhandled:Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
serverStream.Read(inStream, 0, buffSize)I don't know how to make my client and server accept the fact that a client has disconnected...
rewriting a class I use for saving Treeview data to a XML file for use of saving ListView data I can't really figure out the rewrite, I'm stucked, unfortunately Listviews seems to be a big problem for me in general.
Option Strict On
''' <summary>
''' The TreeViewDataAccess class allows the nodes within a TreeView to be
''' persisted to xml for later retrevial.
''' </summary>
[Code]....
I have a rather straightforward question.How to I get a DataGrid in WPF to save/load raw XML files and have the ability to display/edit them with other controls? The application will only work offline so I won't need SQL. Just simply open, edit and save data to XML.
View 2 RepliesI am attempting to create a program that users can create "cards" that have user inputted data. There are textboxes for each field such as Name, Location, Description, etc What is the best way to save and load this information?
View 1 RepliesI'm making a log for my application.I have made the log and it works.I use the streamreader and the streamwriter to save and load the data. I thought that it would be more organized to have columns inside the log.The problem is how will i save the information to the text file and load it up again so that it could organize itself again. The code that i used to make the columns.
log.Columns.Add("Task performed ", CInt((log.Width - 4) * 0.3), HorizontalAlignment.Left)
log.Columns.Add("Time and date", CInt((log.Width - 4) * 0.2), HorizontalAlignment.Left)
log.Columns.Add(" Amount of detected files(s)", CInt((log.Width - 4) * 0.2), HorizontalAlignment.Left)
log.Columns.Add(" App version", CInt((log.Width - 4) * 0.4), HorizontalAlignment.Left)
The code that i use to add the information to the log.
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I have a window application develpoed in vs 2008, framework 3.5, in which i have put a button.. Now where i click that button the other text boxes are filled up with the data from database thru web service.. what i want is while all text boxes are being filled i want to show an animated loading gif image till data loading is completed in all the text boxes.. i have tried to use image picture box but while data is loading gif image is displyes but in static mode.. cant see animation... i think this is because data loading and animation both are done thru one UI thread..
View 8 Replieshow to create a bitmap image of a specified size? then how to save and reload such a bitmap to and from a file?VB2005 starter
View 1 RepliesI've been looking into the SaveFileDialog and OpenFileDialog features, but have been failing to implement them. The actualy program that I would be implementing this in is much larger, so alternative methods are welcomed.
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I'm looking to work on a project at work and I'm preparing to do my home screen of my program and I'm stuck on how to prep for all of this. I want to be able to save projects (and its not just one form that will be saved, 26 future forms to be exact), load projects, create new projects and view available projects to be selected from in the home screen. Really a very standard home screen when concerning professional programming. I'm not quite sure how to go about this or when looking ahead what might be a best practice. I haven't worked with databases, so my knowledge is limited.
View 17 Repliesi want to save and load an array as and xml file. what is the easiers way to do so.
View 2 Replieslike when i close a program, i want it to save its location (i guess to the registry, idk) and then when it loads, i want it to load back where it was.this is what i have so far. it saves to the registry ok, but it doesnt load where it should. also, my button1 click is what saves the location for now, but this code is just a test app for this.
Code:
Imports System.IO
Imports Microsoft.Win32
[code].....
Using the Microsoft VB 2008 Express program, I'm making a SWd20 character sheet (D&D) to be distributed to a few friends. It's a program where the user can figure out stats, species, class, etc without having to make any calculations him/herself.. but this will all be in vain without saving it..
So I'd love to know how I could make it so the user can save and load the entire file(including buttons, labels, text boxes, menu strips, possibly multiple forms, etc) on his/her own computer.. Is this possible, and if so, how can I go about this?
I've already searched through and found lots on saving text in the files to .txt files, but that doesn't cover everything I need