Error 1 'System.Data.SqlClient...

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C#

WPF

Am getting the following error "Error 1 'System.Data.SqlClient.SqlConnection' is a 'type' but is used like a 'variable'" in the below code kindly help

string imgLoc = "";
        
        public Retrieve()
        {
            InitializeComponent();
        }

        private void Browse(object sender, RoutedEventArgs e)
        {
            SqlConnection cn = SqlConnection(global::DatabaseApp.Properties.Settings.Default.Database1ConnectionString);

            try
            {
                OpenFileDialog dlg = new OpenFileDialog();
                dlg.Filter = "JPG Files (*.jpg)|*.jpg|GIF Files (*.gif)|*.gif|All Files(*.*)|*.*";
                dlg.Title = "Select Student Picture";
                if (dlg.ShowDialog() == System.Windows.Forms.DialogResult.OK)
                {
                    imgLoc = dlg.FileName.ToString();
                    picStud.ImageLocation = imgLoc;
                }
            }
            catch(Exception ex)
            {
                System.Windows.MessageBox.Show(ex.Message);
            }
        }

        private SqlConnection SqlConnection(string p)
        {
            throw new NotImplementedException();
        }