how to convert a String to Binary code for Build a File?

Question

well in a database is saved a binary code (this is a *.jar) i need to download this code (with a select query) and Rebuild this file

What are the setps for convert since a String to a File?

someone told me i need convert it to array byte, but i dont know how to convert a String to a array byte... what are the best steps?

this code return me a table

Public Function ConseguirCatalogo() As DataTable


        Return conn.RegresarTabla("select archivo from catalogo where id= (select id from periodos where actual=1)")

    End Function

and this code i get the String

Private Sub EnviarArchivo() 'para el catalogo

Dim MyTable As DataTable = consultas.ConseguirCatalogo()
Dim binarycode As String = MyTable.Rows(0)(0).ToString()

End Sub

now what are the next setp for convert it finally to a file? ( it is a *.jar)

Guffa · Accepted Answer · 2011-10-13 23:36:22Z

1

When you have converted the data into a string, it's already ruined. You should get the data as a byte array directly:

Dim binarycode As Byte() = DirectCast(MyTable.Rows(0)(0), Byte())

answered Oct 13, 2011 at 23:36

Guffa

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4 Comments

user647336 Over a year ago

and now i have BinaryCode as Byte how do i convert it to a file? @Guffa

user647336 Over a year ago

I get a bug doing it "Dim binarycode As Byte() = DirectCast(MyTable.Rows(0)(0), Byte())"... String can't convert to '1-matriz' dimensional byte @Guffa

Guffa Over a year ago

Then it's not really binary in the database, or your RegresarTabla doesn't read it correctly into the data table.

user647336 Over a year ago

no, bug is a String can't convert to a byte array its a sintaxis error

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