public Search() { InitializeComponent(); Width = listView2.Left; comboBox_Source.SelectedIndex = 0; MySqlite.InitDB(); if (!File.Exists(MySqlite.path)) { Tools.CreateTable(); //不存在数据库,创建新表 } UIColors.SetControlColors(this); webTools = new Tools(); //网络请求结束的事件 webTools.HTMLGetCompleted += Tools_HTMLGetCompleted; }