C#winform用户密码修改界面怎么做

1、修改密码的地方我觉得要足够方便和显眼才更合理，所以，我将其布局在用户登录系统界面上。

3、新增一个winform页面，这个页面用来修改用户密码，基本内容包含用户名、旧密码、新密码以及一个提交修改的按钮。

5、编写修改密码页面代码，这里主要是通过确认修改这个button控件来实现。代码如下：private void button2_Click(object sender, EventArgs e) { SqlConnection conn = new SqlConnection(Read_Xml(Application.StartupPath + "\\Sqlconnection.xml")); conn.Open(); SqlCommand cmd3 = new SqlCommand("select count(*) from Employee where User_id='" + textBox6.Text.Trim() + "'", conn); int b = (int)cmd3.ExecuteScalar(); if (b == 1) { SqlCommand cmd4 = new SqlCommand("select pwd from Employee where User_id='" + textBox6.Text.Trim() + "'", conn); string c = cmd4.ExecuteScalar().ToString(); string oldpwd = textBox7.Text.Trim(); string newpwd = textBox8.Text.Trim(); string dnewpwd = textBox9.Text.Trim(); if ((b == 1) && (c == oldpwd) && (newpwd == dnewpwd)) { SqlCommand cmd5 = new SqlCommand("update Employee set pwd ='" + newpwd + "'where User_id='" + textBox6.Text.Trim() + "'", conn); int k = (int)cmd5.ExecuteNonQuery(); if (k > 0) { MessageBox.Show("密码修改成功！", "提示"); } else { MessageBox.Show("密码修改失败！", "提示"); } } else { MessageBox.Show("新旧密码填写错误，请检查！", "提示"); } } else { MessageBox.Show("用户名不存在！", "提示"); } conn.Close(); }