代码如下:先谢谢各位了
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.OleDb;namespace LoginApp
{
public partial class frmChange : Form
{
public frmChange()
{
InitializeComponent();
} private void btnOK_Click(object sender, EventArgs e)
{
if (txtOldPwd .Text ==""||txtNewPwd .Text ==""||txtNewPwd2 .Text =="")
{
if (MessageBox.Show(" 您输入的信息不完整!,是否关闭窗口", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
this.Close();
}
}
else
if (txtNewPwd.Text !=txtNewPwd2 .Text )
{
if (MessageBox.Show(" 您的新密码输入不一致!,是否关闭窗口", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
this.Close();
}
}
else
if (txtOldPwd .Text !="")
{
string connString = Properties.Settings.Default.connString;
OleDbConnection connection = new OleDbConnection(connString);
string sq1 = "select password from users where username='admin'";
OleDbDataAdapter OleDbDataAdapte1 = new OleDbDataAdapter(sq1, connString);
DataSet dt1 = new DataSet();
OleDbDataAdapte1.Fill(dt1, "users");
string sq2 = txtOldPwd.Text;
string sq3 = (string)dt1.Tables["users"].Rows[0]["password"];
if (sq2 .Equals (sq3 .Trim ()) && txtNewPwd .Text ==txtNewPwd2 .Text )
{
string constr1 = Properties.Settings.Default.connString;
string sq4 = "UPDATE users set password ='" + txtNewPwd.Text.Trim() + "' where username='admin'";
OleDbConnection conn = new OleDbConnection(connString);
conn.Open();
OleDbCommand cd = new OleDbCommand(sq4,conn );
OleDbDataReader sr = cd.ExecuteReader();
MessageBox.Show("密码已修改成功 ", "提醒");
}
}
}
}
}
C#密码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.OleDb;namespace LoginApp
{
public partial class frmChange : Form
{
public frmChange()
{
InitializeComponent();
} private void btnOK_Click(object sender, EventArgs e)
{
if (txtOldPwd .Text ==""||txtNewPwd .Text ==""||txtNewPwd2 .Text =="")
{
if (MessageBox.Show(" 您输入的信息不完整!,是否关闭窗口", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
this.Close();
}
}
else
if (txtNewPwd.Text !=txtNewPwd2 .Text )
{
if (MessageBox.Show(" 您的新密码输入不一致!,是否关闭窗口", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
this.Close();
}
}
else
if (txtOldPwd .Text !="")
{
string connString = Properties.Settings.Default.connString;
OleDbConnection connection = new OleDbConnection(connString);
string sq1 = "select password from users where username='admin'";
OleDbDataAdapter OleDbDataAdapte1 = new OleDbDataAdapter(sq1, connString);
DataSet dt1 = new DataSet();
OleDbDataAdapte1.Fill(dt1, "users");
string sq2 = txtOldPwd.Text;
string sq3 = (string)dt1.Tables["users"].Rows[0]["password"];
if (sq2 .Equals (sq3 .Trim ()) && txtNewPwd .Text ==txtNewPwd2 .Text )
{
string constr1 = Properties.Settings.Default.connString;
string sq4 = "UPDATE users set password ='" + txtNewPwd.Text.Trim() + "' where username='admin'";
OleDbConnection conn = new OleDbConnection(connString);
conn.Open();
OleDbCommand cd = new OleDbCommand(sq4,conn );
OleDbDataReader sr = cd.ExecuteReader();
MessageBox.Show("密码已修改成功 ", "提醒");
}
}
}
}
}
C#密码
=>
[password]
MessageBox.Show("密码已修改成功 ", "提醒");