Databases
StackOverflow2013
Postsdbo
POHow to copy the data from file to array in VB
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow to copy the data from file to array in VB
    primarykey
    data
    text
    <p>I am pasting code ..which I am able to read file and but not able to put into array there is runtime error I am getting.I have made line bold where i am getting error.Anyone help me out I am quite new to VB.</p> <pre><code>Imports System.Drawing.Imaging Imports System.Runtime.InteropServices Imports System.IO Imports System.IO.Compression Public Class Form1 Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim openFileDialog1 As OpenFileDialog = New OpenFileDialog ' Set filter options and filter index. openFileDialog1.Filter = "BMP Files (*.bmp)|*.bmp|All Files (*.*)|*.*" openFileDialog1.FilterIndex = 1 openFileDialog1.Multiselect = True ' Call the ShowDialog method to show the dialogbox. Dim UserClickedOK As Boolean = openFileDialog1.ShowDialog PictureBox1.Image = Image.FromFile(openFileDialog1.FileName) Dim data() As Byte = File.ReadAllBytes(openFileDialog1.FileName) ' Dim hexval As String ' Dim objStreamWriter As StreamWriter Dim buff(data.Length()) As String Dim counter As Integer Dim Arr() As String = Nothing ' the file path and the file name to the StreamWriter constructor. ' objStreamWriter = New StreamWriter("C:\users \karmic\My Documents\Text.txt") 'Write a line of text. For i = LBound(data) To UBound(data) **Arr(i) = Hex(data(i))** -runtime error If i = data.Length() - 1 Then Continue For End If If (Hex(data(i))) = (Hex(data(i + 1))) Then counter = counter + 1 ' MsgBox(counter) Continue For Else 'objStreamWriter.Write(hexval) 'MsgBox(hexval) ' Array.Copy(hexval, Arr(i), data.Length) 'objStreamWriter.Write(", ") 'objStreamWriter.Write(Hex(counter + 1)) MsgBox(Hex(counter + 1)) 'objStreamWriter.Write(", ") End If 'MsgBox(Array.Length()) Next End Sub End Class </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USuser3064718
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COWhat does your error say? And BTW, no lines are bold. Use 2 asterisks ("*") before and after the code you want to make bold.
      singulars
      1. POHow to copy the data from file to array in VB
      1. USFoxHound
    2. COI am getting runtime error as NullReference exception was unhandheld.To make line bold I have 2 * before and after to make that line bold.
      singulars
      1. POHow to copy the data from file to array in VB
      1. USuser3064718
    3. COYou're trying to set one of the array values when the array (Arr) itself is set to nothing.
      singulars
      1. POHow to copy the data from file to array in VB
      1. USFoxHound
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload