private void btnChange_Click(object sender, EventArgs e) { if (tbOldPwd.Text.Trim().Length <= 0) { MessageBox.Show("请输入原密码"); tbOldPwd.Focus(); return; } if (tbNewPwd.Text.Trim().Length <= 0) { MessageBox.Show("请输入新密码"); tbNewPwd.Focus(); return; } if (tbConfirmPwd.Text.Trim().Length <= 0) { MessageBox.Show("请再次输入新密码"); tbConfirmPwd.Focus(); return; } if (string.Compare(tbNewPwd.Text.Trim(), tbConfirmPwd.Text.Trim()) != 0) { MessageBox.Show("输入的密码不一致,请重新输入!"); tbNewPwd.Focus(); return; } int t; string sql = "select count(*) from manager where username='******'and pwd='" + com.md5(tbOldPwd.Text.Trim()) + "'"; t = db.runSqlInt(sql); if (t > 0) { string updateSql = "update manager set pwd='" + com.md5(tbNewPwd.Text.Trim()) + "'where username='******'"; db.runSql(updateSql); MessageBox.Show("密码修改成功"); } else { MessageBox.Show("旧密码输入错误"); tbOldPwd.Focus(); } }
private void button1_Click(object sender, EventArgs e) { if (tbUser.Text.Trim().Length == 0) { MessageBox.Show("请输入用户名!"); tbUser.Focus(); return; } if (tbPWD.Text.Trim().Length == 0) { MessageBox.Show("请输入密码!"); tbPWD.Focus(); return; } common com = new common(); database db = new database(); int t = 0; string sql = "select count(*)from manager where username='******'and password='******'"; t = db.runSqlInt(sql); if (t > 0) { this.Hide(); main fmain = new main(); fmain.User = tbUser.Text.Trim(); fmain.Show(); } else { MessageBox.Show("用户名或者密码错误!"); } }