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string ConStr="data source=C:\ceshi.db;verson=3;password=123456";
  SQLiteConnection MyConnection = new SQLiteConnection(ConStr);
  try
  {
  MyConnection.Open();
  MessageBox.Show("OK");

  using (SQLiteCommand SQLCom = new SQLiteCommand(MyConnection))
  {
  string strSQL = @"SELECT num from ceshi;";

  SQLCom.CommandText = strSQL;

  SQLiteDataReader SQLReader = SQLCom.ExecuteReader();

  while (SQLReader.NextResult() != false)
  {

  this.label1.Text = SQLReader["num"].ToString();

  }

  }

  MyConnection.Close();

  }

  catch (Exception err)
  {

  throw err;

  }


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