So I tries to read txt file to memory, sometimes (just sometimes) I getting this error: The output char buffer is too small to contain the decoded characters, encoding 'Unicode (UTF-8)' fallback 'System.Text.DecoderReplacementFallback'. Parameter name: chars
[Code]...
Dim r As New IO.BinaryReader(New IO.FileStream(path,IO.FileMode.Open))
While r.PeekChar() <> 0
End While
[code]......
i want to read a character 1 by 1 from a string and a .txt, i know all about stream reader so for the .txt would it be somthing like:textbox1.text = tr.readCharacter.i would prefer to be able to read from a textbox or String array though.
View 10 RepliesWe are going to create a compiler like program where when we inputed character or multicharacter it will retrieve to the database the equivalent symbol of that character and place it to another textbox.[code]...
View 1 RepliesWhen I try to read the file, I am getting an error = "Option strict on disallows implicit conversion from string to Char"
[Code]...
I want to read a text file(.txt) character by character into a database.There are 28 characters on each line and I want to read the first 16 into a column in a database and the rest in another column in the database.
View 7 RepliesI can't seem to find how to recast a char to Ascii, the VB6 way was to ASC(thechar/thestring).What is the new method? or how to perform the recast while converting to a byte so it will fit and not buffer overrun.
View 10 RepliesI want to read a text file(.txt) character by character into a database.There are 28 characters on each line and I want to read the first 16 into a column in a database and the rest in another column in the database.
View 17 RepliesI am trying to write a VB function to strip unwanted characters from a string. It is for generating a 'clean' url from data that has been inputted into a CMS. Someone has copied and pasted from a Word document and so there appears to be an mdash or ndash in the product title. This results in ─ appearing instead of -
I have tried a Replace(text, Chr(196), Chr(45)) but it isn't working so it can't be 196. Is there a tool or something where I can copy this character and paste it into the tool and it will tell me what char code it is?
i want to convert following number to character equivalent but without using any special character.
View 1 Repliesi'm trying to add textbox1.text as the file name for the save file dialog.. this code works fine when there are no invalid char inputed in the textbox. if there are, my app shuts down.. here's the code that i'm using:
Public Sub saveas()
With SaveFileDialog1
.InitialDirectory = Label1.Text
[code].....
i'm working on saving a text file.. the code i have, works without a question, no problem there.Imports System.IO
[Code]...
I have a block of text in a text .txt file that looks like this: [code]I've tried reading every character and entering them into a 2D array (failed)I've tried splitting them into individual lines and entering them into a 1D array (Success, but very difficult to target individual characters from this, and will take a long time to set up as I only did this for 10 lines)
View 2 RepliesHow to read a single character each time, from a text file using vb.net? I mean that if the txt file contains code as " my name is...".It should be read initially as :'m'..after some time it should show 'y'. then 'n'.'a'..'m'.'e'.like that..
View 7 RepliesI have a program to read line by line from text file. [code]There is run time error while TextLine data has ' or "May I know how to read the data with ' or " character?
View 6 RepliesI'm trying to read a text file with multiple lines and then display it in a textbox. The problem is that my program only reads one line.
Imports System.IO
Imports Microsoft.VisualBasic.FileIO
Public Class Form1
[code]....
I know how to read user input using textbox but it only can read character and numbers. Is it possible that I want to read user input equation?
Example:
User type A+B
User put range of A and B.
1.25<A< 3.56
2.45<B< 9.87
I failed to read the equation using textbox. Is it there are other ways that can use to read equation input A+B?I am using VS2005 and VB.Net. I really new in this programming using VB.Net.
Visual Basic 2008 Express Edition. I completed a few projects earlier this year and have just returned to build a new project and find that I am getting an error on the build. I get the following message: Unable to output file '<Projects location><Project_name>objDebug<Project_name>.exe'. Could not execute CVTRES.EXE.
I also get this message on projects I have completed previously. I have reinstalled (repair) and then un-installed and reinstalled Visual Basic 2008 Express Edition to no avail. I also notice that Help topics such as Technical Support and Check for Updates give the following response: The operation could not be completed. I am unaware of any changes to the environment that could have caused these errors.
Is it possible to encrypt certain string and it output 10 character?.
View 6 RepliesI am trying to addd a record to a .txt file that happens to have the same couln name for two different columns. So i get an error message Duplicate Output Destination 'ST" 'ST' is my duplicate coulmn name, being used for Street and State poor design
code
Dim da As New OleDbDataAdapter("Select * From " & Me.OpenFileDialog1.SafeFileName & "", con)[code]...
There is nothing I can do about the .txt file it comes from a 3rd party and is there design,
Unable to write to output file 'D:DevelopmentJob_TrackerJob_List_and_TrackerobjDebugJob_List_and_Tracker.exe': The process cannot access the file because it is being used by another process. Job_List_and_Tracker
View 6 RepliesI want to calculate the instance of * in the text file.... but I am not able to do it.... can anyone tell me which file funtion to use for it... I first tried to read the file --- its just one line file then see if the character '*' exists in the file... I am done till here...i dont to know to proceed further....
View 3 RepliesMay I know instead of using WriteLine(MyTextBox.Text) to send data to a serial port, how do I send character by character? Use BaseStream.Write?
Now:
Dim ComLine As Ports.SerialPort
ComLine.WriteLine(MyTextBox.Text)
[Code]...
This is my code for retrieving pictures, it was working before but then i accidentally deleted the table and i created it again with the same name and same fields. and now whenever i open the form with the picture, there was a message box error. it says Buffer cannot be null. Parameter name: buffer I don't know what i did wrong.
I don't know whether it is simple or not because i am new to programming. my requirement is : In my vb.net winform application, the filenames of the files present in "D:Project" willbe displayed in DataGridView1 control. Now I want to load these files one after another into memory stream buffer and add the headers("ID","Name","Class") to the content in the file. Then I want to save these files in "C:" with "_de" as suufix to the filename i.e.,sample_de.csv.
View 1 RepliesI have this gamepad: [URL]I want to write a small application that is able to read what button is pressed on the gamepad.I've seen this thread:[URL]but this does not read the input of the controller, it only initialize it.[URL]
View 7 RepliesI'm creating a small program to read from an SQL server, loading result into an array, pivoting the array to my liking and mailing it out to selected members of a group. It's going to be run once a day with Windows schedule. I have the connection, query and mail sorted, but not the datareader to array bit.
(line 26)?
Imports System.Data
Imports System.Data.SqlClient
Imports System.Net.Mail
[CODE]...
What this code will do to the copy?
vb
Using source As New IO.FileStream("source path here", IO.FileMode.Open)
Using target As New IO.FileStream("destination path here", IO.FileMode.Create)
Const BUFFER_SIZE As Integer = 1024
Dim buffer(BUFFER_SIZE - 1) As Byte
[Code] .....
I need validation for string to comply with next: no space char starts with one delimiter char ends with one delimiter char has no other char as delimiter char. Updated sorry missed that should only be one delimiter char at start and at the end
View 2 RepliesI am concerned that this code is copying bytes into a temporary buffer before writing directly to file.
I feel like there should be some method of copying bytes directly from the tail end of the main buffer directly to file.'this code copies all bytes starting at integer index from the main buffer into a new file: ga.exe
'declare temporary buffer
Dim EXEBytes(bytes.Count - index) As Byte
'copy subset of bytes over, starting at index
System.Buffer.BlockCopy(bytes, index, EXEBytes, 0, bytes.Count - index)
'write bytes from temporary array into file
File.WriteAllBytes(Server.MapPath("/BIN/ga.exe"), EXEBytes)
