Code Error...

Code:

Imports System.IO Public Class srec Dim Encoder As WMEncoder Dim quality = "Windows Media Video 8 for Local Area Network (384 Kbps)" Dim savefold Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click If TextBox1.Text = "" Then MsgBox("Please type a file name") Else Button1.Enabled = False Button2.Enabled = True MakeVideo() End If End Sub Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click Button2.Enabled = False Button1.Enabled = True Encoder.Stop() End Sub Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Try AxWindowsMediaPlayer1.URL = "C:\SCVids\" + TextBox1.Text + ".avi" Catch ex As Exception End Try End Sub Private Sub CheckBox1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged If CheckBox1.Checked = True Then quality = "Screen Video/Audio High (CBR)" Else quality = "Windows Media Video 8 for Local Area Network (384 Kbps)" End If End Sub Private Sub MakeVideo() Encoder = New WMEncoder ' Retrieve the source group collection and add a source group. Dim SrcGrp As IWMEncSourceGroup2 Dim SrcGrpColl As IWMEncSourceGroupCollection SrcGrpColl = Encoder.SourceGroupCollection SrcGrp = SrcGrpColl.Add("SG_1") ' Add a video and audio source to the source group. Dim SrcVid As IWMEncVideoSource2 Dim SrcAud As IWMEncAudioSource SrcVid = SrcGrp.AddSource(WMENC_SOURCE_TYPE.WMENC_VIDEO) SrcAud = SrcGrp.AddSource(WMENC_SOURCE_TYPE.WMENC_AUDIO) ' Identify the source files to encode. SrcVid.SetInput("ScreenCap://ScreenCapture1") SrcAud.SetInput("Device://Default_Audio_Device") ' Choose a profile from the collection. Dim ProColl As IWMEncProfileCollection Dim Pro As IWMEncProfile Dim i As Integer Dim lLength As Long ProColl = Encoder.ProfileCollection lLength = ProColl.Count For i = 0 To lLength - 1 Pro = ProColl.Item(i) If Pro.Name = quality Then SrcGrp.Profile = Pro Exit For End If Next ' Specify a file object in which to save encoded content. Dim File As IWMEncFile File = Encoder.File File.LocalFileName = "C:\SCVids\" + TextBox1.Text + ".avi" ' Crop 2 pixels from each edge of the video image. SrcVid.CroppingBottomMargin = 2 SrcVid.CroppingTopMargin = 2 SrcVid.CroppingLeftMargin = 2 SrcVid.CroppingRightMargin = 2 ' Start the encoding process. Encoder.Start() End Sub Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Button2.Enabled = False If Dir("C:\SCVids", vbDirectory) = "" Then MkDir("C:\SCVids") End Sub End Class

I want to create a screen recorder with this code but I receive these errors:

Code:

Warning 1 Type library importer encountered a property getter 'sessionPlaylistCount' on type 'WMPLib.IWMPNowPlayingHelperDispatch' without a valid return type. The importer will attempt to import this property as a method instead. Intelligent Robot OS Warning 2 At least one of the arguments for 'IWMPGraphEventHandler.NotifyAcquireCredentials' cannot be marshaled by the runtime marshaler. Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. Intelligent Robot OS Error 3 Type 'WMEncoder' is not defined. C:\Users\Catalin\documents\visual studio 2010\Projects\Intelligent Robot OS\Intelligent Robot OS\srec.vb 5 20 Intelligent Robot OS Error 4 'TextBox1' is not declared. It may be inaccessible due to its protection level. C:\Users\Catalin\documents\visual studio 2010\Projects\Intelligent Robot OS\Intelligent Robot OS\srec.vb 10 12 Intelligent Robot OS Error 5 'TextBox1' is not declared. It may be inaccessible due to its protection level. C:\Users\Catalin\documents\visual studio 2010\Projects\Intelligent Robot OS\Intelligent Robot OS\srec.vb 28 56 Intelligent Robot OS Error 6 Type 'WMEncoder' is not defined. C:\Users\Catalin\documents\visual studio 2010\Projects\Intelligent Robot OS\Intelligent Robot OS\srec.vb 42 23 Intelligent Robot OS Error 7 Type 'IWMEncSourceGroup2' is not defined. C:\Users\Catalin\documents\visual studio 2010\Projects\Intelligent Robot OS\Intelligent Robot OS\srec.vb 44 23 Intelligent Robot OS Error 8 Type 'IWMEncSourceGroupCollection' is not defined. C:\Users\Catalin\documents\visual studio 2010\Projects\Intelligent Robot OS\Intelligent Robot OS\srec.vb 45 27 Intelligent Robot OS Error 9 Type 'IWMEncVideoSource2' is not defined. C:\Users\Catalin\documents\visual studio 2010\Projects\Intelligent Robot OS\Intelligent Robot OS\srec.vb 49 23 Intelligent Robot OS Error 10 Type 'IWMEncAudioSource' is not defined. C:\Users\Catalin\documents\visual studio 2010\Projects\Intelligent Robot OS\Intelligent Robot OS\srec.vb 50 23 Intelligent Robot OS Error 11 'WMENC_SOURCE_TYPE' is not declared. It may be inaccessible due to its protection level. C:\Users\Catalin\documents\visual studio 2010\Projects\Intelligent Robot OS\Intelligent Robot OS\srec.vb 51 35 Intelligent Robot OS Error 12 'WMENC_SOURCE_TYPE' is not declared. It may be inaccessible due to its protection level. C:\Users\Catalin\documents\visual studio 2010\Projects\Intelligent Robot OS\Intelligent Robot OS\srec.vb 52 35 Intelligent Robot OS Error 13 Type 'IWMEncProfileCollection' is not defined. C:\Users\Catalin\documents\visual studio 2010\Projects\Intelligent Robot OS\Intelligent Robot OS\srec.vb 57 24 Intelligent Robot OS Error 14 Type 'IWMEncProfile' is not defined. C:\Users\Catalin\documents\visual studio 2010\Projects\Intelligent Robot OS\Intelligent Robot OS\srec.vb 58 20 Intelligent Robot OS Error 15 Type 'IWMEncFile' is not defined. C:\Users\Catalin\documents\visual studio 2010\Projects\Intelligent Robot OS\Intelligent Robot OS\srec.vb 71 21 Intelligent Robot OS Error 16 'TextBox1' is not declared. It may be inaccessible due to its protection level. C:\Users\Catalin\documents\visual studio 2010\Projects\Intelligent Robot OS\Intelligent Robot OS\srec.vb 73 45 Intelligent Robot OS