How can i save an array of string to disk??
lets say we have
Dim myStringArray() As String = {"A","B","C","D",.......,"Z"}
and wanted to save it to a binary file on my disk.
later i want to be able to read it and load it into memory.
Here's the code i've used in the past to save an integer array to settings (The setting being listed as a String on the dropdown):
Save:
vb
sec0string = String.Join(";", Array.ConvertAll(sec0, Function(n) n.ToString()))
Load:
vb
sec0string = My.Settings.sec0
sec0 = Array.ConvertAll(sec0string.Split(";"c), Function(s) Convert.ToInt32(s))
im trying to figure out how to edit this program and have it save values as a string or array and allow them to be recalled and edited however im at a terrible slup, here is the code im going to base it off of.
Public Class frmHospitalCharges
Dim introomcharge As Integer
Dim decmisccharge As Decimal
[Code].....
i have the basic program written i have to add a input box for names.
I want to save the files as pdf,jpeg,txt,gif etc to disk from database. In database it is stored as binary data.
View 2 RepliesI am wondering how to save a textbox contents to disk?? Using the MSDN help I was able to come up with this code so far. I have a menu strip item labled "save as." when I click it the prompt to allow you to pick a location to save comes up and it will save a text file to the selected location but the .txt file is blank. How do I set this code so that it knows to save the contents of the textbox.
[code]...
am wondering how to save a textbox contents to disk?? Using the MSDNI was able to come up with this code so far. I have a menu strip item labled "save as." when I click it the prompt to allow you to pick a location to save comes up and it will save a text file to the selected location but the .txt file is blank.
Dim saveFileDialog1 As New SaveFileDialog()
saveFileDialog1.Filter = "Text|*.txt"
saveFileDialog1.Title = "Save File As"
[code].....
[Code]...
HumanName (the variable, not the setting) in this code is a 1-Dimensional string array. HumanLevel is a 1-dimensional integer array. There is no error in this code, but for some reason despite the fact that the integer array actually saves to settings exactly as it is supposed to, the string array causes the program to crash.
[Code]...
I am currently working and a vb. net project and would like to know how I can save the contents that I enter into a texbox on my form into an array which I defined in a class. Class:
[Code]....
How can I transfer entries from listview to disk using System.io?
View 2 Replieshow can i save image from picturebox or from url to disk i have found a similar post but is for asp.net and i looking for vb.net and i looking a simple function.
View 2 RepliesI need to use a virtual drive (ram disk) to save data temporarily. Which ram disk program is good to use.
View 6 RepliesI made a painting on a picturebox in Visual Basic 2010. Now I wish to save that picture on my harddisk. But
pictureBox1.Image.Save("C:MyImage.jpg")
does not work.
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Drawing.Imaging
Imports System.Text
Public
Class Form
[Code] .....
I want webbrowser1 to navigate to a list of URLs that will be read in from a text file. (I left that part out of the below code and just manually entered urls as examples.) What I have found is that the webbrowser1 will navigate to the urls, but it will not stay long enough to get anything from them. In this example, not even the final page loaded ends up getting saved. Can someone tell me how to halt the attempt to save webbrowser1.documenttext until it is fully loaded?
View 5 RepliesI am using webcam and want to record video and save it on disk, the video time must be constant for such 20 or 30 sec, what i want is to change CAPTUREPARMS members which contain fLimitEnabled & wTimeLimit
'---capcaptureget function
Function capCaptureGetSetup(ByVal hWnd As Integer, ByVal s As Long, ByVal wSize As Integer)
capCaptureGetSetup = SendMessage(hWnd, WM_CAP_SET_SEQUENCE_SETUP, wSize, s)
End Function
[Code]...
I'm developing a winform application. I want to take input from user (i.e. the user provides username) and use that input as part of filename and save to file.How do I check if the username provided by the user didn't contain windows' reserved characters. And what is the list of reserved characters for windows?
View 1 RepliesI have a mySQL table(IMP_SCANS) holding the file, it's name and size for every document:
scan_1 blob
description varchar
filesize int
doc_no varchar
doc_date date
I managed to insert a file to the table. Now I need to save the file to disk.
So I have the code:
Dim conn As New MySqlConnection
Dim cmd As New MySqlCommand
Dim myData As MySqlDataReader
Dim SQL As String
Dim FileSize As UInt32
Dim fs As FileStream
[CODE]............
I all works fine up to the line: myData.GetBytes(myData.GetOrdinal("scan_1"), 0, rawData, 0, filesize) Where it says "Object reference not set to an instance of an object". I cannot figure out why I receive this error.
I have a program for collecting data of people. Now i also have a picture of these people... what is the best thing to do? what is the fastest? the safest?
1. Converting a picture to a bytearray an then insert it into a sql -table (with al ready 5 columns).
2. making an new table on the sql database with just two columns (id-ref, picture-column)
3. or saving a file on to the hard drive? (if nescessary saving the url into the database?)
where do can I find the save disk icon on the toolstrip.
View 2 RepliesI would like to know how to save data without click on the floppy disk on binding navigator. IS there any coding which i can use under a button to do the same function as binding navigator.I just want to use button to save and delete data rather than binding navigator.the data which i am using is in datagridview and details view?
View 2 RepliesI have webcontrol inside windows application now i want save image inside page on my local hard disk?
I was thinking to make an app to save images [or download images] to local hard disk. But to keep it easy, I want this app to create a small picturebox on form to show the thumbnail of downloaded image. Lets say a 5 pictureboxes has to be added with the thumbnails to show the recent downloads. A user can save the location where he wants to save the files on hard disk. A listbox or a dropdown menu will help in categorizing the images, like image1 in friends section, image2 in family section, image3 in others, etc... When the program restarts all the latest 5 thumbnails has to be loaded in pictureboxes and the directory that was chosen. Finally, a button that shows the downloaded images into original image file size one by one or a slide show. Is it possible to make such program?
View 2 RepliesI have following instance of System.Collections.Specialized.NameValueCollection:
Dim UserSelection As New System.Collections.Specialized.NameValueCollection
UserSelection.Add("D_Color1", "Black")
UserSelection.Add("D_Color2", "Green")
UserSelection.Add("D_Color3", "Purple")
I need to save this instance to hard disk and then load it back from hard disk as an instance. How do I do that?
Can I save an array into my .bin file then read the array again just like a string or Integer??
View 2 RepliesI want to compare two array and save the miss match character into 3rd array.
View 1 Repliesmy code is :
[Code]...
The error is Value of type '1-dimensional array of string' cannot be converted to 'String'.
These is the content of my txt file which is saved in D drive in my pc abc,1,2,3..I tried the flowing but it didn't work:[code]I am getting error on this line.. data = line.Split(","c)...it says this line isn't in use anymore or something and that I rather use LineInput but thats asks for filenumber and i don't know what that is. I am sorry but I am a complete beginner. what else can I try? [code]ok that error is gone now but now if I want to add these values to a list box..how can i do that?
View 1 Repliesi have an array contains a-z.Then i have a textbox and when click on the button, it will replace the text inside the textbox to the index number of the array.Example, from "abc" will become "0 1 2" The code below do the job.how to do so that i can replace the text inside the textbox from "0 1 2" back to "abc" based on the array?
Dim txtKey As String = readKeyTxt.Text
readKeyTxt.Text = ""
For Each b As String In txtKey[code].....
I need to append STRINg to Array and cast it 1-dimensionalArray
Dim remoteFileNames(0)
As
String
[Code]....
Here "FtpRemoteDirectory" is a string and ftpFileNames() is the Array String which list the FileNames.
and remoteFileNames is 1-dimension array
I am writing an OPC Client in VB.NET (2008) and I am using an OPC wrapper from Graybox. I am having some problems with the data types. I have an Array of String that contains all of the OPC Items that I wish to read from the OPC Server. When I attempt to use the Array of String, Option Strict causes the following compile error message:Error 5 Option Strict On disallows narrowing from type 'System.Array' to type '1-dimensional array of String' in copying the value of 'ByRef' parameter 'ItemIDs' back to the matching argument. How do I pass the Item ID's (all strings) in an array?
View 1 RepliesI'm having problems with marshaling in VB.NET to C++, here's the code :
In the C++ DLL :
struct APP_PARAM
{
[code].....