private void button2_Click(object sender, EventArgs e) { if (textBox1.Text.Length > 1) { try { if (textBox2.Text.Trim().Length > 1) { DbHelperSQLite.connectionString = "Data Source=" + textBox1.Text.Trim() + ";Version=3;Password="******""; } else { DbHelperSQLite.connectionString = "Data Source=" + textBox1.Text.Trim() + ";Version=3;"; } DbHelperSQLite.ChangePSW(textBox3.Text.Trim()); MessageBox.Show("修改密码成功!"); } catch (System.Exception ex) { MessageBox.Show("修改密码失败!"); } } else { MessageBox.Show("请选择SQLITE文件!"); } }