用户登录代码
来源:互联网 发布:欧洲四猪 知乎 编辑:程序博客网 时间:2024/06/06 02:22
using System;
using System.Data.SqlClient;
using System.Windows.Forms;
using CRM.BaseClass;
namespace CRM
{
public partial class frmLogin : Form
{
public static string M_str_name; //记录登录用户名字
public static string M_str_pwd; //记录登录用户密码
public static string M_str_right; //记录登录用户的权限
private readonly BaseOperate boperate = new BaseOperate();
private readonly OperateAndValidate opAndvalidate = new OperateAndValidate();
public frmLogin()
{
InitializeComponent();
}
private void frmLogin_Load(object sender, EventArgs e)
{
opAndvalidate.cboxBind("select UserName from tb_User", "tb_User", "UserName", cboxUName);
}
private void cboxUName_SelectedIndexChanged(object sender, EventArgs e)
{
SqlDataReader sqlread =
boperate.getread("select UserName,UserRight from tb_User where UserName='" + cboxUName.Text + "'");
if (sqlread.Read())
{
labURight.Text = sqlread["UserRight"].ToString();
M_str_right = labURight.Text;
}
sqlread.Close();
}
private void btnLogin_Click(object sender, EventArgs e)
{
SqlDataReader sqlread =
boperate.getread("select UserName,UserPwd from tb_User where UserName='" + cboxUName.Text.Trim() +
"' and UserPwd='" + txtPwd.Text.Trim() + "'");
sqlread.Read();
if (sqlread.HasRows)
{
M_str_name = cboxUName.Text;
M_str_pwd = txtPwd.Text.Trim();
frmMain fmain = new frmMain();
Hide();
fmain.Show();
}
else
{
MessageBox.Show("用户名或密码错误!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
txtPwd.Text = "";
cboxUName.Focus();
}
sqlread.Close();
}
private void btnExit_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void frmLogin_FormClosing(object sender, FormClosingEventArgs e)
{
Application.Exit();
}
}
}
using System.Data.SqlClient;
using System.Windows.Forms;
using CRM.BaseClass;
namespace CRM
{
public partial class frmLogin : Form
{
public static string M_str_name; //记录登录用户名字
public static string M_str_pwd; //记录登录用户密码
public static string M_str_right; //记录登录用户的权限
private readonly BaseOperate boperate = new BaseOperate();
private readonly OperateAndValidate opAndvalidate = new OperateAndValidate();
public frmLogin()
{
InitializeComponent();
}
private void frmLogin_Load(object sender, EventArgs e)
{
opAndvalidate.cboxBind("select UserName from tb_User", "tb_User", "UserName", cboxUName);
}
private void cboxUName_SelectedIndexChanged(object sender, EventArgs e)
{
SqlDataReader sqlread =
boperate.getread("select UserName,UserRight from tb_User where UserName='" + cboxUName.Text + "'");
if (sqlread.Read())
{
labURight.Text = sqlread["UserRight"].ToString();
M_str_right = labURight.Text;
}
sqlread.Close();
}
private void btnLogin_Click(object sender, EventArgs e)
{
SqlDataReader sqlread =
boperate.getread("select UserName,UserPwd from tb_User where UserName='" + cboxUName.Text.Trim() +
"' and UserPwd='" + txtPwd.Text.Trim() + "'");
sqlread.Read();
if (sqlread.HasRows)
{
M_str_name = cboxUName.Text;
M_str_pwd = txtPwd.Text.Trim();
frmMain fmain = new frmMain();
Hide();
fmain.Show();
}
else
{
MessageBox.Show("用户名或密码错误!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
txtPwd.Text = "";
cboxUName.Focus();
}
sqlread.Close();
}
private void btnExit_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void frmLogin_FormClosing(object sender, FormClosingEventArgs e)
{
Application.Exit();
}
}
}
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