vb.net byte array string copy

[marfi95]

Hi all.

I need to copy a byte array into a string, but starting at a specific
location in the byte array. This is where I get hung up. For example if
my byte array is (100) big, I might want to start at position 60 for
example and copy from 60 to the next null byte in the array to my
string. The starting position is variable, as is where the next null
byte is in the byte array.

The array I'm dealing with is much bigger than that, so doing it char
by char (which is what I was doing) is way, way too slow.

Many TIA.

 

[Herfried K. Wagner [MVP]]

I need to copy a byte array into a string, but starting at a specific
location in the byte array. This is where I get hung up. For example if
my byte array is (100) big, I might want to start at position 60 for
example and copy from 60 to the next null byte in the array to my
string. The starting position is variable, as is where the next null
byte is in the byte array.

'System.Text.Encoding.<encoding>.GetString(<bytes>, <index>, <count>)'.

 

[Christiaan Nijdam]

Did you use StringBuilder as in?:

Dim sb As New System.Text.StringBuilder(1000)
Dim i As Integer
Dim b As Byte() = {65, 66, 67, 68, 69}
For i = b.GetLowerBound(0) To b.GetUpperBound(0)
sb.Append(ChrW(b(i)))
Next
Console.WriteLine(sb)

 

[Cor Ligthert [MVP]]

Marfi,

I think that you have using the sample from Herfried to create a byte array
and than copy that using the buffer class to copy that into your existing
bytearray (or do that direct without creating tempory data)

http://msdn.microsoft.com/library/d...us/cpref/html/frlrfsystembufferclasstopic.asp

There is as well an array.copyto method for this if you not succeed using
this.

I hope this helps,

Cor