System.Text.Encoding Not Working?
Nov 1, 2010
I can't use System.Text.Encoding, I get this error when trying to use it:
A first chance exception of type 'System.NullReferenceException' occurred in WindowsApplication3.exe
A first chance exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.dll
this is the
Private _TextEncoding As System.Text.Encoding
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim _DownloadedBytes() As Byte = _TextEncoding.GetBytes("teststste")
[code]....
and then it exit function.
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Oct 28, 2009
I am sending a DDE message to a client using System.Text.Encoding.ASCII.GetBytes(item) . However, before the message is actually sent, I would like to get the message coded where if the item="Ask" then item=Ask (string variable) and so on. The code is:
Protected Overrides Function OnRequest(ByVal conversation As DdeConversation, ByVal item As String, ByVal format As Integer) As RequestResult
' Return data to the client only if the format is CF_TEXT
[code]....
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Jun 12, 2010
I recently worked on a small-scale EPP Client, which is a communications protocol over TCP/IP using XML packets to exchange commands and responses. The server I'm working with specifically is employing SSL so the code contains references to an SSLStream certificates and passphrases - please don't ask me to post more code than I provide here.We're building the XML EPP Commands in raw System.Strings, then using System.Text.Encoding.UTF8.GetBytes on the string to populate a Byte Array, then writing the Byte Array into the SSLStream. The server would communicate, negotiate certificates, and
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Nov 4, 2009
I would like to pass a whitespace character by using the System.Text.Encoding.ASCII.GetBytes(" "), and System.Text.Encoding.Unicode.GetBytes(" ") , where " " is the whitespace Character required. What do I need to type (" ") to get a whitespace character passed.?
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Jul 26, 2011
if we don't mention the decoding what decoding will they use?I do not think it's System.Text.Encoding.Default. Things work well if I EXPLICITLY put System.Text.Encoding.Default but things go wrong when I live that empty.So this doesn't work well
Dim b = System.IO.File.ReadAllText("test.txt")
System.IO.File.WriteAllText("test4.txt", b)
[Code]...
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May 3, 2011
I have done very little with encoding of Text. Truthfully, I don't really even know what it means exactly.
For example, if I have something like:
CODE:
Is that 'encoded' in memory in a particular format? Does that format depend on what language I'm using?
If I were in another country, like China, for example, and I had a string of Chinese (mandarin? My apologies if I'm using the wrong words here) would the following code (that I've used fine on English strings) still work the same?
CODE:
Or would it lose all meaning when you convert that .Net string to a UTF8Encoding when that conversion isn't valid?
Finally, I've worked with .Net for a few years now and I've never seen, heard, or had to do anything with Encoding. Am I the exception, or is it not a common thing to do?
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Aug 21, 2009
I am writing an application that must generate a plain Text file with fixed sized columns.my current code is:
Dim MyFilePath As String = Path & FILE_PREFIX & FileNr & ".TXT"
IO.File.Delete(MyFilePath)
Dim FileStr As New IO.StreamWriter(MyFilePath, False, <ENCODER HERE>)
[code].....
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Mar 8, 2010
I have an ASP.Net app that allows a user to write text into a Telerik RadEditor control and then send an email.For some reason I'm sometimes getting strange characters showing up in the email that is generated.se if I use the later, the text would show up just fine. If I pull up the saved record within the ASP.Net apps interface it looks just fine. It also appears just fine when I view the text within the recorded of the MS SQL table it was stored in. Continued--->I have tried to add it to the constructor of my email class with/without mybase but that had no effect.
Public Sub New(ByVal EmailDate As DateTime, ByVal LogoPath As String)
MyBase.New()
MyBase.BodyEncoding = Encoding.GetEncoding("iso-8859-1")
[code].....
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Apr 23, 2012
I am creating xml files that contain chinese posts and it seemed to be working but I started getting an error:
This page contains the following errors:
error on line 4165 at column 25: Input is not proper UTF-8, indicate encoding ! Bytes: 0x0B 0xC3 0xA5 0xC2 Below is a rendering of the page up to the first error.
When trying to open some of the resulting files.The line it references contains chinese characters and this occurs only in some situations and my guess is that the text is sometimes containing some characters that throw it off. How can I ensure that the text for that field will always be properly encoded? I don't even understand why the issue yet.
Public Shared xwriter As XmlTextWriter = New XmlTextWriter(xmlfile, Encoding.UTF8)
I make sure the xmltextwriter is properly declared.
EDIT:
The issue is that I use vb.net and apparantly it encodes everything in utf-16 so I assume this is fine. The problem is that the text I am receiving is probably double encoded or incorrectly encoded and I need to clean it before using it; so that my xml is valid.
EDIT:
so if I need to fix my data, my question is how can I detect what encoding is used for a specific text and how do I convert into utf8 format that can be viewed in an xml file and make the file valid.
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Mar 7, 2011
I used WriteAllText to set the encoding for a text file. When I wrote it, everything worked out fine. However, strange characters or symbols appeared in some ofm y fields without my having typed it. why is this so? The encoding I'm using is UTF8. I used the WriteAllText to write the fields to file but did not use the ReadAllText to bring the data back into the fields or program.
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Apr 1, 2011
I have a VB2010 project where I need to read a tab delimited 50MB file using Microsoft.VisualBasic.FileIO.TextFieldParser. This technique works fine until the reader encounters a Unicode character upon which it inserts the little square thingy. The obvious choice is to change the encoding of the reader to Unicode from the default. This would probably work fine but for most files but this one is fairly large and I get the error TextFieldParser is unable to complete the read operation because maximum buffer size has been exceeded. By the way this file can be read completely without the Unicode option. Making the file smaller or breaking it up really isn't an option. Is is possible to increase the buffer size or is there another way to read this data that places the data in fields like the textparser and allows unicode characters?
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Apr 30, 2012
I have a problem with combobox. I set the DrawMode into OwnerDrawVariable so I can draw items seperately with styles, but the characters of the items are now displaying blocks. The block characters are none ASCII. It used to display well but not now and I don't know what caused it to happen. I didn't change my system locale. At the same time, other combobox that have Normal DrawMode displays nicely fine.
My custom drawing code:
e.Graphics.DrawString(combo.Items(e.Index), combo.Font, b2, rect.X, rect.Y)
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Feb 25, 2010
I am creating a Pizza Order program as part of my coursework college. why something isn't working.
Quote:
lblTotal.Text = Val(Form2.lblPizzaTotal.Text) + Val(Form3.lblDrinksTotal.Text)
The code above is what I am using to add the Value of Label 1 (Pizza Total) and Label 2 (Drinks Total), however it seems that in the final total it doesn't appear to add the value of Label 2.
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Jun 21, 2010
i would like to ask is there anyway to read a txt file with UTF-8 encoding using streamreader or filestream. the txt file is contain some extended ASCII that makes me cannot read the characters properly. I hav tried Encoding.ASCII.GetString(Encoding.UTF8.GetBytes()) but still it return wrong character when it's reading extended ASCII code.
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May 13, 2012
Im going to get started.Im setting up an hwid login for my vb.net program,
To be safe, im not directly connecting to my db from the program, because if it was cracked, my db info is leaked,so i want it running through php,
this is my current php code
<?php
$con = mysql_connect("localhost","username","password");
if (!$con)
{
die('Could not connect: ' . mysql_error());
[Code]...
of course, i have removed my db info, but im getting this error Parse error: syntax error, unexpected T_VARIABLE in db.php on line 10
I cant seem to find what the problem is, what i want to do is have the program submit the hwid like this site.com/db.php?hwid=hwid here and have it echo the name in the row of the hwid submitted.
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Dec 22, 2010
I am tring to build network toolkit for my very computer illiterate techs. What I am trying to accomplish is to embed a command prompt of sorts in a form. I have been sucessful to a point. Here are my main two problems.
1: I cannot read line by line as the output of the process is generated. Rrather I have to wait untill its complete, this is ok for "IPConfig and Maybe "Ping". But for longer diag tests this would take too long and it would look like the app has crashed. So I need to figure out how to redirect the output of the process to my text control.
2: I would like to have the ability to redirect keyboard input to the process. For telnet as an example. I would capture all keyboard commands while my text control has focus and send them to the process and with the problem solved I should be able to establish 2-way IO with the process. Is there a way to do this or am I barking up the wrong tree.
[Code]...
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May 18, 2010
i'm trying to launch mpc(media player classic) in background for playing some music.
Like it's supposed to be background, i don't want the player to be visible.
I've tryed this out (see below) without expected result. What should i do ?
Dim proc As New Process Dim IS_READING As Boolean = False Try
[Code]...
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Sep 20, 2011
I'm using Silverlight 4 OOB & elevated trust.
I need to get all the filenames on specific directory & populate an object List(Of String)
The compiler throws an error "Method not found" on .Getfiles() method.
Dim files() As String = System.IO.Directory.Getfiles(Path) 'this line is failing..
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Mar 2, 2012
I'm having issues trying to get file system watchers working properly, I'm not sure whats not right here, I want to use multiple, but I can't even get one of them to fire on an event... simple form with a listbox for folders to watch and a listbox to list changes detected and a command button to launch watchers.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
lstFolders.Items.Add("C: emp1")
lstFolders.Items.Add("C: emp2")
[code]....
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Dec 14, 2009
I have this code for my shortcut keys
Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
If e.Shift = True And e.KeyCode = Keys.F3 Then
'Do something
End If
But I also have a button to send my program to the System tray like so:
NotifyIcon1.Visible = True
Me.Visible = False
How can I get my shortcut key to work while my program is in the system tray?
It doesn't work while its a notify icon
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Jun 23, 2012
I am coding myself a Visual Basic.Net 2005 Slot Machine program. I've been hard at work on this for about a week and half now. From what I have with it it works and all. However there are so many annoying errors with the program.
LIST: - I am not winning when I should be. My winning conditions is set when you get 3 of the same picture you are to be awarded with some credits. It works but sometimes when it does land on 3 of the same pictures it still says that I've lost. This is the main problem and I am about to pull my hair out about this - The image with the lowest value is showing up the least and the picture with the most value is showing up more frequent? I don't want to change them around to fix that.
[Code]...
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Feb 5, 2010
i've made a tabbed webbrowser (but i'm new and a noob with VB.NET)The tabs system is working, but the progressbar doesn't work and my titles aren't changing.
Imports System.Web
Imports System.IO
Imports System.Text
[code].....
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Oct 11, 2010
Has anyone used a system wide hotkey and notice it no longer works? But the program is still running fine. When I run my program and it starts the hotkey, sometimes it will work fine all day, other times within 15 minutes I press the keys and the program does not react to it. I am using the keys Control-F2. Here is my
Public Sub SetHotkey()
Try
Select Case ComboBox2.SelectedIndex
[code]....
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Jul 24, 2009
I don't know why or how but my project just turned into a not working system with hundreds of warnings... I didn't touch any of the assembly or anything that could do this and I don't have a clue. I have backups but one days' work will be gone if I can't resolve this.I got warnings like these:Warning1Could not find type 'crm.MyTextBox'. Please make sure that the assembly that contains this type is referenced. If this type is a part of your development project, make sure that the project has been successfully built.00 Warning2The variable 'txtQty' is either undeclared or was never assigned.L:MartynascrmEquipmentSale .Designer.vb3270Warning3Could not find type 'crm.Mycombox'. Please make sure that the assembly that contains this type is referenced. If this type is a part of your development project, make sure that the project has been successfully built.00 Warning4The variable 'cmbProduct' is either undeclared or was never assigned.L:MartynascrmEquipmentSale.Designer.vb3310 Warning5Could not find type 'crm.MyTextBox'. Please make sure that the assembly that contains this type is referenced. If this type is a part of your development project, make sure that the project has been successfully built.00
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Oct 22, 2009
This is really a continuation from my earlier post. I've never worked with this datatype/collection (system.collection.generic.Ienumerable) before so I'm struggling to declare the query globally so I can reference the results within other sub routines/functions. I also am struggling to convert it to other types.how I can convert the collection of xml elements/system.collection.generic.Ienumerable into an xmltextreader (I know I will have to change the query below as it select the value of the node and not the node itself) I imagine by converting the query result to system.IO.stream My first port of call was MSDN but I find the material very difficult to understand for this particular subject.
[Code]...
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Jan 28, 2011
I have VB.NET Window based project built on .NET 3.5 Framework that is working on the Windows7 32 bit System but when I try to run this same application in Windows7 64 bit System it gives an error message: "System.BadImageFormatException: An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)"
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Jul 29, 2011
Full Program: Option Strict On : Option Explicit On Module Module1
[Code]...
After I ran it, I had a file a.txt in my debug folder but the size is 0 bytes (and when i open it is empty of course) Shouldn't the output had "asd" in it ?
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Mar 24, 2011
I am using timers in a windows service and facing problem that anytime some exception happens ( say i unplug LAN wire from my computer ) service stops running, What i am expecting is that service should keep on running as i am catching generic exception which should catch the exception on one tick event and again work (next tick)when i plug in LAN wire (i am plugging/un plugging ) LAN wire as this service is reading database from LAN so i want to replicate a failover scneario)
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Sep 21, 2011
I'm having a problem with this code in the highlighted line(*); getting the error in the heading.
Dim htmlarraylist As New List(Of iTextSharp.text.IElement)
htmlarraylist = *HTMLWorker.ParseToList(New StreamReader(tempFile), New StyleSheet())*
[Code].....
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Dec 31, 2011
I am working on an applictation to scan windows files to check for missing files, i have a couple questions on how to do this.I would like to use the %systemroot%system32 that way that it doesn't matter what drive letter it is, i'm not sure how to do this because when i tried it, it told me the file i was looking for didn't exist (in this case C:windowssystem32 undll32.exe) which does exist. Is there some way to use the %systemroot%?
Also, i am trying to print the resaults to a rich text box such as if rundll32.exe is missing put in the box "rundll32.exe is missing". How do I allow it to write it in the box, I tried the print command, but it didn't work.
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