C#

dgv_TraceItems.DataSource =liste2;

dgv_TraceItems.DataSource = new List<string> { "hello", "goodbye" };

public void seedatagrid(List<myClass> liste2)
{
    dgv_TraceItems.DataSource =liste2;
}

void pChannelKonfig_EnabledChanged(object sender, EventArgs e)
        {
                list_to_dgv.seedatagrid(testInfo.Information);
        }

public class TestInfoClass : INotifyPropertyChanged
    {
        private string fileName;

        
        private List<BLF_InfoClass> information;

        public event PropertyChangedEventHandler PropertyChanged;

        public string FileName
        {
            get
            {
                return this.fileName;
            }
            set
            {
                this.fileName = value;
                this.OnPropertyChanged("BlfFileName");
            }
        }

       public List<InfoClass> Information
        {
            get
            {
                return this.information;
            }
            set
            {
               this.information = value;
                this.OnPropertyChanged("Information");
            }
        }

        private void OnPropertyChanged(string propertyName)
        {
            if (this.PropertyChanged != null)
            {
                this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }
    }

public partial class UC_ChannelConfiguration : UserControl
   {


       public UC_ChannelConfiguration()
       {
           InitializeComponent();

       }

       public void seedatagrid(List<BLF_InfoClass> liste2)
       {
           dgv_TraceItems.DataSource = liste2;

       }


     }

public partial class MainForm : Form
    {
        ParserClass file = null;
        UC_ChannelConfiguration list_to_dgv = new UC_ChannelConfiguration();        
        TestInfoClass testInfo = null;
        

        public MainForm()
        {
            InitializeComponent();
            testInfo = new TestInfoClass();
             
            testInfo.PropertyChanged += new PropertyChangedEventHandler(testInfo_PropertyChanged);
            tbTraceFile.DataBindings.Add(new Binding("Text", testInfo, "FileName"));
            pConfig.EnabledChanged += new EventHandler(pConfig_EnabledChanged);
            
        }

        void pConfig_EnabledChanged(object sender, EventArgs e)            
        {
             list_to_dgv.seedatagrid(testInfo.Information);
        }
        private void btlLoadfile_Click(object sender, EventArgs e)
        {           
            OpenFileDialog openFileDialog_file = new OpenFileDialog();          
            openFileDialog_file .RestoreDirectory = false;
            openFileDialog_file .Multiselect = false;

            if (openFileDialog_file .ShowDialog() == DialogResult.OK)
            {
                testInfo.FileName = openFileDialog_file.FileName;
                
            }           
        }          
    }