want to import createfile of kernel32

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i had tried this way

VB

<DllImport("kernel32.dll")> _
Shared Function CreateFile(Byval strPathName As String,Byval iDesiredAccess As UInteger, ByVal iShareMode As UInteger, ByRef pSecurityAttributes As IntPtr, Byval iCreationDisposition As UInteger, Byval iFlagsAndAttributes As UInteger, ByRef hTemplateFile As IntPtr) As IntPtr
    End Function

and then use createfile as

hfile = CreateFile("C:\photo.jpg", 2147483648, 1, IntPtr.Zero, 3, 128, IntPtr.Zero)

But this cant create handle of "photo.jpg" and return -1...

then anything what i could do to get this..........

Thanks advance

Posted 4-May-12 0:30am

Manoj Patter

Updated 9-May-12 21:34pm

v2

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Maciej Los · Answer 1 · 2012-05-04T09:08:00

Solution 1

CreateFile function[^]
There you'll find examples.

Posted 4-May-12 9:08am

Maciej Los

Comments

Manoj Patter 10-May-12 3:35am

sir
i used it all.....

Maciej Los 10-May-12 5:02am

Please, clarify your question. Does the application return some error? What kind of error, what kind of message?
Can't you use Image class?

Manoj Patter 11-May-12 1:24am

sir i have created handle, thanks alot
but i am facing a problem again

Manoj Patter · Answer 2 · 2012-05-10T19:29:00

VB

<DllImport("kernel32.dll")> _
    Public Shared Function CreateFile(ByVal strPathName As String, ByVal iDesiredAccess As Int32, ByVal iShareMode As Int32, ByRef pSecurityAttributes As IntPtr, ByVal iCreationDisposition As Int32, ByVal iFlagsAndAttributes As Int32, ByRef hTemplateFile As IntPtr) As IntPtr

    End Function

.....
........

VB

Const GENERIC_READ = &H80000000
        Const GENERIC_WRITE = &H40000000
        Const OPEN_EXISTING = 3
        Const CREATE_ALWAYS = 2
        Const FILE_SHARE_READ = &H1
        Const FILE_SHARE_WRITE = &H2
        Const FILE_ATTRIBUTE_NORMAL = &H80

VB

sfile_handle = CreateFile(sfileinfo.FullName, GENERIC_READ, FILE_SHARE_READ Or FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0)
                    store_handle = CreateFile("D:\FileName", GENERIC_WRITE, FILE_SHARE_READ Or FILE_SHARE_WRITE, 0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0)

this returns handle as integer value.
But when i am using this in for Loop
sfile_handle return -1 and store_handle return any integer...

What a prob with this.....plz help