Injector code error..

Code:
Public Class Form1

    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)
    Dim DLLFileName As String
    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 Inject()

        Timer1.Stop()
        Dim TargetProcess As Process() = Process.GetProcessesByName(TextBox1.Text)
        TargetProcessHandle = OpenProcess(PROCESS_CREATE_THREAD Or PROCESS_VM_OPERATION Or PROCESS_VM_WRITE, False, TargetProcess(0).Id)
        pszLibFileRemote = OpenFileDialog1.FileName
        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.Show()
    End Sub
    Private Sub GroupBox1_Enter(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles GroupBox1.Enter
        If My.Settings.Inject = "auto" Then
            RadioButton1.Checked = True
        ElseIf My.Settings.Inject = "manual" Then
            RadioButton2.Checked = True
        Else
            RadioButton1.Checked = True
        End If

        If My.Settings.Close = 1 Then
            CheckBox1.Checked = True
        Else
            CheckBox1.Checked = False
        End If
    End Sub

    Private Sub CheckBox1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged
        If CheckBox1.Checked = True Then
            My.Settings.Close = 1
        Else
            My.Settings.Close = 0
        End If
        My.Settings.Save()
        My.Settings.Reload()
    End Sub

    Private Sub RadioButton2_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadioButton2.CheckedChanged
        My.Settings.Inject = "auto"
        My.Settings.Save()
        My.Settings.Reload()
        Button3.Enabled = False
        Timer1.Start()
    End Sub

    Private Sub RadioButton1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadioButton1.CheckedChanged
        My.Settings.Inject = "manual"
        My.Settings.Save()
        My.Settings.Reload()
        Button3.Enabled = True
        Timer1.Stop()
    End Sub

    Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
        If ListBox1.Items.Count > 0 Then
            Dim TargetProcess As Process() = Process.GetProcessesByName(TextBox1.Text)
            If TargetProcess.Length = 0 Then
                Label3.Text = ("Waiting for " + TextBox1.Text + ".exe")
                Label3.ForeColor = Color.Red
            Else
                Dim ProcID As Integer = Process.GetProcessesByName(TextBox1.Text)(0).Id
                Timer1.Stop()
                Timer2.Stop()
                'INJECT CODE HERE
            End If
        End If
    End Sub

    Private Sub Timer2_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer2.Tick
        If TextBox1.Text = "" Then
            Label3.Text = "Waiting for process to be set."
            Label3.ForeColor = Color.Red
            Timer1.Stop()

        ElseIf ListBox1.Items.Count = 0 Then
            Label3.Text = "Waiting for DLL path."
            Label3.ForeColor = Color.Red
            Timer1.Stop()

        Else
            Dim TargetProcess As Process() = Process.GetProcessesByName(TextBox1.Text)
            If TargetProcess.Length = 0 Then
                Label3.Text = ("Waiting for " + TextBox1.Text + ".exe")
                Label3.ForeColor = Color.Red
            Else
                If RadioButton1.Checked = True Then
                    Timer1.Start()
                End If
            End If
        End If
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        If ListBox1.Items.Count > 0 Then
            If TextBox1.Text <> "" Then
                Dim TargetProcess As Process() = Process.GetProcessesByName(TextBox1.Text)
                If TargetProcess.Length = 0 Then
                    MsgBox(TextBox1.Text + ".exe is not running.", MsgBoxStyle.Critical, "Error")
                Else
                    Timer1.Stop()
                    Dim ProcID As Integer = Process.GetProcessesByName(TextBox1.Text)(0).Id
                    'INJECT CODE HERE
                End If
            Else
                MsgBox("You haven't specificed a process.", MsgBoxStyle.Critical, "Error")
            End If
        Else
            MsgBox("You need to select a dll file to inject.", MsgBoxStyle.Critical, "Error")
        End If
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        OpenFileDialog1.Filter = "DLL (*.dll) |*.dll"
        OpenFileDialog1.ShowDialog()
    End Sub

    Private Sub OpenFileDialog1_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles OpenFileDialog1.FileOk
        Dim FileName As String = OpenFileDialog1.FileName.Substring(OpenFileDialog1.FileName.LastIndexOf("\"))
        Dim DllFileName As String = FileName.Replace("\", "")
        ListBox1.Items.Add(DllFileName)
        Me.Dlls.add(DllFileName, OpenFileDialog1.FileName)
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        If ListBox1.SelectedIndex >= 0 Then
            OpenFileDialog1.Reset()
            Me.Dlls.Remove(ListBox1.SelectedItem)
            For i As Integer = (ListBox1.SelectedItems.Count - 1) To 0 Step -1
                Dim i2 As Integer = i + 2
                ListBox1.Items.Remove(ListBox1.SelectedItems(i))
            Next
        End If
    End Sub

    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        ListBox1.Items.Clear()
        Me.Dlls.Clear()
    End Sub

    Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
        For Each inj As KeyValuePair(Of String, String) In Me.Dlls
            Inject(ProcID, inj.Value)
        Next
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    End Sub
End Class
'Dlls' is not a group of 'Injector.Form1'.

Pls help me..