Converting File Into Bytes And Then Converting Those Files Back Into Its Original Form?

Aug 22, 2011

my goal is to

1.Take an file(exe,dll,etc)

2.Convert it into hex

3.place that hex values in a stack

4.Execute the values inside the stack to its original form(i.e. take the elements out of stack and then convert it to a compile format)

Imports System.IO
Sub Main()
Dim fileName As String = "ABC.exe"

[code]....

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I've got the following simple code to convert Bytes to a Hex string :-

Code:
Shared Function BytesToHex(ByVal bytes() As Byte) As String
If bytes Is Nothing Then Return ""
Dim S As String = BitConverter.ToString(bytes)

[Code].....

The HexToBytes routine obviously can take a lot longer to complete than the BytesToHex routine and is noticeably slower when dealing with a lot of data. As I'm converting a lot of hex strings back to bytes, I wondered if there was a more efficient way of doing it without looping through the whole string as I am doing?

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[Code]...

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This has to be incredibly simple, but I must not be looking in the right place.

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'UUU'

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I am using VB.NET 2008. In VB6, I could use the LSET command, as in:

Code:
Private Type typByteArray
B(1 To 4) As Byte
End Type

[Code]....

But of course this code won't work in VB.NET. In C it would be easy to handle situations like this by using unions, but VB.NET doesn't support them.

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[Code]...

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[Code]...

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Mar 14, 2012

I have a "result" which is DataTable and I like to get the x distinct values(City) and convert it back to DataTable how do I do this the code below gives me an error

Dim query = (From x In results.AsEnumerable()
Select (x.Field(Of String)("City"))).Distinct().CopyToDataTable()

so what I want is records of distinct cities I can get that but the problem I am having is converting it back to Datable.

Edited:I am using "where" in this statement and it does convert to Table(works fine) but not on "select"

Dim results = (From myRow In ds.Tables(1).AsEnumerable()
Where (myRow.Field(Of String)("xxxx") = xxxx)
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VS 2008 - Converting Byte Array To String And Back?

Mar 4, 2012

I am looking for something that will convert a byte array to a string and back, anything in-build that does it as this method would:

To string:
vb
Dim b = ByteArrSerialize(Obj, Compress, EncryptKey)
Dim sb As New System.Text.StringBuilder
For Each item In b
sb.Append(Chr(item))
Next

To byte:
vb
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Aug 9, 2011

I have the following function,
Dim results() As Object = Me.Invoke("webdirect", New Object() {Company, LocationCode, CustomerNumber, OrderNumber, OrderRef, OrderDate, WebLines})
o_Company = CType(results(1),System.Nullable(Of Integer))
o_LocationCode = CType(results(2),String)
o_CustomerNumber = CType(results(3),String)
[Code] .....

So the return type of this function is a string, but I would like to get it back to its original form so I can access the individual sections i.e. o_LocationCode,o_CustomerNumber, etc how can I do that ?

Entire functions looks like this
Public Function webdirect(<System.Xml.Serialization.XmlElementAttribute(IsNullable:=true)> ByVal Company As System.Nullable(Of Integer), <System.Xml.Serialization.XmlElementAttribute(IsNullable:=true)> ByVal LocationCode As String, <System.Xml.Serialization.XmlElementAttribute(IsNullable:=true)> ByVal CustomerNumber As String,
[Code] .....

Called like this
Dim returnArray As String
returnArray = client.webdirect(10, "123", "123", "123", "147", "2011-11-1", webLinesArray, 10, "", "", "", "", "", webRespArray)
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[Code]...

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