网上好多关于ReadprocessMemory、WriteprocessMemory使用方法的贴子都不能用，下面是本人亲自测过可用的，望对大家有用。

创新互联专注于高唐网站建设服务及定制，我们拥有丰富的企业做网站经验。 热诚为您提供高唐营销型网站建设，高唐网站制作、高唐网页设计、高唐网站官网定制、小程序设计服务，打造高唐网络公司原创品牌,更为您提供高唐网站排名全网营销落地服务。

   '''

    ''' 读取内存地址
    '''

    ''' 进程句柄
    ''' 内存地址
    ''' 数据存储变量
    ''' 长度sizeof(lpBuffer)
    ''' 读取长度
    '''
    '''
    Declare Function ReadProcessMemory Lib "kernel32.dll" (ByVal hProcess As Integer, ByVal lpBaseAddress As IntPtr, ByVal lpBuffer As IntPtr, ByVal nSize As Integer, ByRef lpNumberOfBytesRead As Integer) As Boolean

   '''

    ''' 写入内存地址
    '''

    ''' 进程句柄
    ''' 写入进程的内存地址
    ''' 数据存储变量
    ''' 长度sizeof(lpBuffer)
    ''' 实际数据的长度
    '''
    '''
    Declare Function WriteProcessMemory Lib "kernel32" Alias "WriteProcessMemory" _
        (ByVal hProcess As Integer, ByVal lpBaseAddress As IntPtr, _
         ByVal lpBuffer As Byte(), ByVal nSize As Integer, ByVal lpNumberOfBytesWritten As IntPtr) As Boolean

Declare Function OpenProcess Lib "kernel32.dll" (ByVal dwDesiredAccess As Integer, ByVal bInheritHandle As Integer, ByVal dwProcessId As Integer) As Integer

   Friend Const PROCESS_ALL_ACCESS = &H1F0FFF = 2035711
    Friend Const PROCESS_VM_READ = &H10
    Friend Const PROCESS_VM_WRITE = &H20

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim hw As Integer = OpenProcess(PROCESS_VM_READ, False, 4304)
        Dim getstr(12) As Byte
        Dim GetStrIntptr = Marshal.UnsafeAddrOfPinnedArrayElement(getstr, 0)
        Button1.Text = "read结果：" & ReadProcessMemory(hw, CType(&H4D45A0, IntPtr), GetStrIntptr, 12, 0)
        TextBox1.Text = Marshal.PtrToStringUni(GetStrIntptr)
        TextBox3.Text = "GLE:" & GetLastError
        CloseHandle(hw)
    End Sub
‘需要注意：readprocessmemory的lpBuffer放的地数组地址的基址，需要用marshal转化一下。Marshal.PtrToStringUni(GetStrIntptr)输出内容。

   Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Dim hw As Integer = OpenProcess(&H1F0FFF, False, 4304)
        Dim Wrtstr(12) As Byte
        Wrtstr = System.Text.Encoding.Unicode.GetBytes("vbWrit")
        Button2.Text = "Write结果：" & WriteProcessMemory(hw, CType(&H4D45A0, IntPtr), Wrtstr, 12, 0)
        TextBox3.Text = "GLE:" & GetLastError
        CloseHandle(hw)
    End Sub

创新互联www.cdcxhl.cn，专业提供香港、美国云服务器，动态BGP最优骨干路由自动选择，持续稳定高效的网络助力业务部署。公司持有工信部办法的idc、isp许可证， 机房独有T级流量清洗系统配攻击溯源，准确进行流量调度，确保服务器高可用性。佳节活动现已开启，新人活动云服务器买多久送多久。

分享文章：vb.netReadProcessMemory使用方法-创新互联
文章网址：http://cdweb.net/article/dsddhc.html