does not contain a constructor that takes '0' arguments Hatası

 
   
  using System; 
  using System.Collections.Generic; 
  using System.ComponentModel; 
  using System.Data; 
  using System.Drawing; 
  using System.Linq; 
  using System.Text; 
  using System.Windows.Forms; 
  using Un4seen.Bass; 
  using Un4seen.Bass.AddOn.Wma; 
  namespace WindowsFormsApplication1 
  { 
      public partial class Form1 : Form 
      { 
          public Form1() 
          { 
              InitializeComponent(); 
           
   
          private void button1_Click(object sender, EventArgs e) 
          { 
  #region WebTuner - Verbindung herstellen  
              int _stream = 1; 
              // Verbindung zum WebStream - Server herstellen 
              Bass.BASS_StreamFree(1); 
              string stream_url = "http://www.sercankara.com/ENPLUS.pls"; 
   
              DOWNLOADPROC myStreamCreateURL = new DOWNLOADPROC(); 
   
              // Create the Stream - mp3 - steram 
              bool isWMA = false; 
              if (stream_url != String.Empty) 
              { 
                  _stream = Bass.BASS_StreamCreateURL(stream_url, 0, BASSFlag.BASS_STREAM_STATUS, myStreamCreateURL, IntPtr.Zero); 
                  if (_stream == 0) 
                  { 
                      // grab WMA Stream 
                      _stream = BassWma.BASS_WMA_StreamCreateFile(stream_url, 0, 0, BASSFlag.BASS_DEFAULT); 
                      if (_stream != 0) 
                      { 
                          isWMA = true; 
                          lblConInfo.Text = "Aktif"; 
                          lblConInfo.ForeColor = Color.Green; 
                      } 
                      else 
                      { 
                          //Error 
                          lblConInfo.Text = "Pasif"; 
                          lblConInfo.ForeColor = Color.Red; 
                          return; 
                      } 
                  } 
   
                  // Play the Stream 
                  Bass.BASS_ChannelPlay(_stream, false); 
              } 
  #endregion 
          } 
          } 
          } 
          }