private bool newUser(string username, string pw, int type)
{
try
{
DataRow row = dataset.Tables["users"].NewRow();
row["users_name"] = username;
row["users_password"] = PasswordUtil.toMd5(pw);
row["users_type"] = type;
dataset.Tables["users"].Rows.Add(row);
dataAdapter.Update(dataset, "users");
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
return(false);
}
return(true);
}
private void bt2_Click(object sender, EventArgs e)
{
DataRow[] rows = dataset.Tables["users"].Select("users_name = '" + tb_username2.Text + "'");
if (rows.Count() == 1)
{
if (string.Compare(rows[0]["users_password"].ToString(), PasswordUtil.toMd5(tb_oldpw2.Text)) == 0)
{
rows[0]["users_password"] = PasswordUtil.toMd5(tb_newpw2.Text);
dataAdapter.Update(dataset, "users");
MessageBox.Show("修改成功");
}
else
{
MessageBox.Show("旧密码输入错误");
}
}
}
private void login(string username, string pw)
{
SqlConnectionStringBuilder sqlbuilder = new SqlConnectionStringBuilder();
sqlbuilder.DataSource = cb_server_ip.Text;
sqlbuilder.InitialCatalog = "PosDB"; //数据库名
sqlbuilder.IntegratedSecurity = true;
using (SqlConnection connection = new SqlConnection())
{
try
{
connection.ConnectionString = sqlbuilder.ConnectionString;
connection.Open();
}
catch (Exception e)
{
MessageBox.Show("连接至服务器失败，请检查连接.\n" + e.ToString(), "连接错误");
}
if (connection.State != ConnectionState.Open)
{
MessageBox.Show("连接至服务器失败，请检查连接.", "连接错误");
return;
}
string md5Pw = PasswordUtil.toMd5(pw);
StringBuilder builder = new StringBuilder();
builder.Append("select * from tb_users where users_name = ");
builder.Append("@users_name ");
builder.Append("and users_password = "******"@users_pw");
SqlParameter para1 = new SqlParameter("@users_name", SqlDbType.Char);
SqlParameter para2 = new SqlParameter("@users_pw", SqlDbType.Char);
para1.Value = username;
para2.Value = md5Pw;
SqlCommand cmd = new SqlCommand(builder.ToString(), connection);
cmd.Parameters.Add(para1);
cmd.Parameters.Add(para2);
SqlDataReader reader = cmd.ExecuteReader();
if (reader.Read())
{
//检查身份
int userType = Convert.ToInt32(reader.GetValue(3));
if (rb_stock.Checked)
{
if (userType != 2 && userType != 3)
{
MessageBox.Show("权限不足");
return;
}
else
{
Thread ShowMainThread = new Thread(
new ThreadStart(delegate { System.Windows.Forms.Application.Run(new PurchaseForm(username)); }));
ShowMainThread.SetApartmentState(ApartmentState.STA);
Connection.ServerIP = cb_server_ip.Text;
ShowMainThread.Start();
this.Close();
}
}
else
{
Thread ShowMainThread = new Thread(
new ThreadStart(delegate { System.Windows.Forms.Application.Run(new UsersManagerForm(userType)); }));
ShowMainThread.SetApartmentState(ApartmentState.STA);
Connection.ServerIP = cb_server_ip.Text;
ShowMainThread.Start();
this.Close();
}
}
else
{
MessageBox.Show("用户名或密码错误！", "错误");
}
}
}