title: C# MetroFrameWork how to Close a MetroForm
body: <p>Hello I'm using the metroframework UI using this <a href="https://thielj.github.io/MetroFramework/" rel="nofollow">library</a> but i cannot close a winform the This.Close(); is not working for me, Its a log in form after the MySQL select query gets a result it will open another winform(Main) then i want to close the login form. My code is below</p>
  
  <pre><code>using System;
  using System.Collections.Generic;
  using System.ComponentModel;
  using System.Data;
  using System.Drawing;
  using System.Linq;
  using System.Text;
  using System.Threading.Tasks;
  using System.Windows.Forms;
  using MySql.Data.MySqlClient;
  using MetroFramework;
  using MetroFramework.Forms;
  
  
  namespace UI
  {
      public partial class Form1 : MetroForm
  
  
      {
  
          public static string SetFname = "";
          public static string Setlname = "";
          public Form1()
          {
              InitializeComponent();
  
          }
  
          private void metroButton1_Click(object sender, EventArgs e)
          {
  
  
              try
              {
                  string MyConnection2 = "Server=localhost;Database=Blue;Uid=root;Pwd=test123;";
                  //Display query  
                  string Query = "select * from blue.members WHERE user_name = '" + this.metroTextBox1.Text + "' AND  user_pass = '" + this.metroTextBox2.Text + "' AND status = 'Activated'";
                  MySqlConnection MyConn2 = new MySqlConnection(MyConnection2);
                  MySqlCommand MyCommand2 = new MySqlCommand(Query, MyConn2);
                  //  MyConn2.Open();  
                  //For offline connection we weill use  MySqlDataAdapter class.  
  
                  MySqlDataReader myReader;
                  MyConn2.Open();
                  myReader = MyCommand2.ExecuteReader();
  
  
  
  
                  int count = 0;
                  while (myReader.Read())
                  {
                      count = count + 1;
  
  
                  }
                  if (count == 1)
                  {
  
  
  
                      string fname = myReader.GetString("firstname");
                      string lname = myReader.GetString("lastname");
  
  
  
                      MetroMessageBox.Show(this, "Log in Success! Welcome, " + fname + " " + lname + "", "Information", MessageBoxButtons.OK, MessageBoxIcon.Question);
  
  
  
                      Datarecords AddNew = new Datarecords();
                      AddNew.ShowDialog();
                      AddNew.TopMost = true;
  
                      this.Close();
  
                  }
                  else
                  {
  
                      MetroMessageBox.Show(this, "Wrong Username &amp; Password.", "Login Failed", MessageBoxButtons.OKCancel, MessageBoxIcon.Stop);
                      MyConn2.Close();
  
                  }
  
  
              }
              catch (Exception ex)
              {
                  MessageBox.Show(ex.Message);
              }  
  
  
          }
      }
  }
  </code></pre>