关于登陆的代码简写
下面是我的登陆的代码哦。。=w=感觉有点不规范，现在我的这些代码是写在后台的，如果我想利用三层的知识，应该怎么改写好哦，或者大家还有什么登陆的好方法，能写下给我看看吗？
public int checklogin(string U_LoginName, string U_Password)
{
SqlConnection con = new SqlConnection(DBhelper.connectionString);
SqlCommand myCommand = new SqlCommand("select count(U_LoginName) from sys_User where U_LoginName=@username and U_Password=@password and (U_Type>2 or U_Type = 0) ", con);
myCommand.Parameters.Add(new SqlParameter("@username", SqlDbType.NVarChar, 50));
myCommand.Parameters["@username"].Value = U_LoginName;
myCommand.Parameters.Add(new SqlParameter("@password", SqlDbType.NVarChar, 50));
myCommand.Parameters["@password"].Value = Common.md5(U_Password,32);
myCommand.Connection.Open();
int i = (int)myCommand.ExecuteScalar();
myCommand.Connection.Close();
return i;
}
protected void denglu_Click(object sender, ImageClickEventArgs e)
{
int o = this.checklogin(txtusername.Text, txtpassword.Text);
if (o > 0)
{
Session["username"] = txtusername.Text;
Response.Write("<script> alert('登陆成功'); window.location.href='ProjectList.aspx';</script>");
}
else
{
Response.Write("<script> alert('登陆失败，账号密码有误或者权限不够');</script>");
}
}
[解决办法]
可以学习下petshop的源码。http://download.csdn.net/detail/xinhua8hao/3066476
