ต้องการจะเขียน Kill หรือ Terminate process ntdll.dll!RtlUserThreadStart เขียนอย่างไรครับ

Public Class Form1
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        'Call killprocess function and send the name of the program you'd like to kill
        killprocess("calc") 'ชื่อ process ที่จะ kill
    End Sub
 
    Public Function killprocess(ByVal processname As String)
 
        'Get list of all running processes
        Dim proc() As Process = Process.GetProcesses
 
        'Loop through all processes
        For i As Integer = 0 To proc.GetUpperBound(0)
            If proc(i).ProcessName = processname Then
                'kill process if name is calc
                proc(i).Kill()
                MessageBox.Show("ปิด process calculator เรียบร้อยแล้ว!", "www.thaicreate.com", MessageBoxButtons.OK, MessageBoxIcon.Information)
            End If
        Next
 
    End Function
 
End Class