dll injector help

Public Class Form1

    Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
        If IO.File.Exists(Application.StartupPath & "\" + ExeName + ".dll") Then
            Dim TargetProcess As Process() = Process.GetProcessesByName("HSUpdate")
            If TargetProcess.Length = 0 Then
                Me.TextBox1.Text = ("...Waiting For launcher")
            Else
                Timer1.Stop()
                Me.TextBox1.Text = "...Inject Succeed"
                Call Inject()
            End If
        Else
            Me.TextBox1.Text = ("..." + ExeName + ".dll Not Found ")
        End If



    End Sub
    Private Sub Injector_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Timer1.Interval = 50
        Timer1.Start()
    End Sub
    Private Sub Inject()
        On Error GoTo 1 ' If error occurs, app will close without any error messages
        Timer1.Stop()
        Dim TargetProcess As Process() = Process.GetProcessesByName("textbox2.text")
        TargetProcessHandle = OpenProcess(PROCESS_CREATE_THREAD Or PROCESS_VM_OPERATION Or PROCESS_VM_WRITE, False, TargetProcess(0).Id)
        pszLibFileRemote = Application.StartupPath & "\" + ExeName + ".dll"
        pfnStartAddr = GetProcAddress(GetModuleHandle("Kernel32"), "LoadLibraryA")
        TargetBufferSize = 1 + Len(pszLibFileRemote)
        Dim Rtn As Integer
        Dim LoadLibParamAdr As Integer
        LoadLibParamAdr = VirtualAllocEx(TargetProcessHandle, 0, TargetBufferSize, MEM_COMMIT, PAGE_READWRITE)
        Rtn = WriteProcessMemory(TargetProcessHandle, LoadLibParamAdr, pszLibFileRemote, TargetBufferSize, 0)
        CreateRemoteThread(TargetProcessHandle, 0, 0, pfnStartAddr, LoadLibParamAdr, 0, 0)
        CloseHandle(TargetProcessHandle)
1:      Me.Close()
    End Sub


    Private TargetProcessHandle As Integer
    Private pfnStartAddr As Integer
    Private pszLibFileRemote As String
    Private TargetBufferSize As Integer

    Public Const PROCESS_VM_READ = &H10
    Public Const TH32CS_SNAPPROCESS = &H2
    Public Const MEM_COMMIT = 4096
    Public Const PAGE_READWRITE = 4
    Public Const PROCESS_CREATE_THREAD = (&H2)
    Public Const PROCESS_VM_OPERATION = (&H8)
    Public Const PROCESS_VM_WRITE = (&H20)

    Public Declare Function ReadProcessMemory Lib "kernel32" ( _
        ByVal hProcess As Integer, _
        ByVal lpBaseAddress As Integer, _
        ByVal lpBuffer As String, _
        ByVal nSize As Integer, _
        ByRef lpNumberOfBytesWritten As Integer) As Integer

    Public Declare Function LoadLibrary Lib "kernel32" Alias "LoadLibraryA" ( _
        ByVal lpLibFileName As String) As Integer

    Public Declare Function VirtualAllocEx Lib "kernel32" ( _
        ByVal hProcess As Integer, _
        ByVal lpAddress As Integer, _
        ByVal dwSize As Integer, _
        ByVal flAllocationType As Integer, _
        ByVal flProtect As Integer) As Integer

    Public Declare Function WriteProcessMemory Lib "kernel32" ( _
        ByVal hProcess As Integer, _
        ByVal lpBaseAddress As Integer, _
        ByVal lpBuffer As String, _
        ByVal nSize As Integer, _
        ByRef lpNumberOfBytesWritten As Integer) As Integer

    Public Declare Function GetProcAddress Lib "kernel32" ( _
        ByVal hModule As Integer, ByVal lpProcName As String) As Integer

    Private Declare Function GetModuleHandle Lib "Kernel32" Alias "GetModuleHandleA" ( _
        ByVal lpModuleName As String) As Integer

    Public Declare Function CreateRemoteThread Lib "kernel32" ( _
        ByVal hProcess As Integer, _
        ByVal lpThreadAttributes As Integer, _
        ByVal dwStackSize As Integer, _
        ByVal lpStartAddress As Integer, _
        ByVal lpParameter As Integer, _
        ByVal dwCreationFlags As Integer, _
        ByRef lpThreadId As Integer) As Integer

    Public Declare Function OpenProcess Lib "kernel32" ( _
        ByVal dwDesiredAccess As Integer, _
        ByVal bInheritHandle As Integer, _
        ByVal dwProcessId As Integer) As Integer

    Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" ( _
        ByVal lpClassName As String, _
        ByVal lpWindowName As String) As Integer

    Private Declare Function CloseHandle Lib "kernel32" Alias "CloseHandleA" ( _
        ByVal hObject As Integer) As Integer


    Dim ExeName As String = IO.Path.GetFileNameWithoutExtension(Application.ExecutablePath)


    Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged

    End Sub

    Private Sub Timer2_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer2.Tick

    End Sub

    Private Sub Label3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)

    End Sub





    Private Sub PictureBox2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)











    End Sub

    Private Sub NotifyIcon1_MouseDoubleClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs)
    End Sub

    Private Sub PictureBox1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)

    End Sub

    Private Sub PictureBox2_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs)

    End Sub
End Class