js部分(default.aspx)
<script>
var xmlHttp;
function CreateXMLHttpRequest()
{
if(window.XMLHttpRequest)
{
xmlHttp =new XMLHttpRequest();
}else if(window.ActiveXObject)
{
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP") ;
}
}
function login()
{
CreateXMLHttpRequest(); //创建组建
var name=document.getElementById("<%=txtName.ClientID %>").value;
var password=document.getElementById("<%=txtPwd.ClientID %>").value;
var url="Login.aspx?name="+name+"&password="+password;
xmlHttp.open("get",url,true); //初始化数据
xmlHttp.onreadystatechange=iscallback; //设置回调函数
xmlHttp.send(null);
}
function iscallback()
{
if(xmlHttp.readyState==4&& xmlHttp.status==200 && xmlHttp.responseText=="true")
{
document.getElementById("txtmsg").value="success";
}
else
document.getElementById("txtmsg").value="fail";
}
</script>
//body 部分(default.aspx)
<body>
<form id="form1" runat="server">
<div>
username:
<asp:TextBox ID="txtName" runat="server"></asp:TextBox><br />
passowrd: <asp:TextBox ID="txtPwd" runat="server"></asp:TextBox><br />
<input id="Button2" onclick="login()" type="button" value="login" /> <br />
<input id="txtmsg" type="text" /></div>
</form>
</body>
//处理部分(Login.aspx.cs)
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string name = Request.QueryString["name"];
string pwd = Request.QueryString["password"];
if (name != "" || name != "null" || pwd != "" || pwd != "null")
{
int result = geruser(name, pwd);
if (result > 0)
{
Response.Write("true");
Response.End();
}
}
}
}
public static string conStr = @"Server=(local);DataBase=TengDa;Trusted_Connection=Yes";
public static SqlConnection connection;
public static SqlConnection getConnection
{
get
{
if (connection == null)
{
connection = new SqlConnection(conStr);
connection.Open();
}
else if (connection.State == System.Data.ConnectionState.Closed)
{
connection.Open();
}
else if (connection.State == System.Data.ConnectionState.Broken)
{
connection.Close();
connection.Open();
}
return connection;
}
}
//
public static int geruser(string name, string pwd)
{
string sql = "select * from Role where RoleName='" + name + "' and RoleRemark='" + pwd + "'";
SqlCommand cmd = new SqlCommand(sql, getConnection);
return Convert.ToInt32(cmd.ExecuteScalar());
}