前台<body>中的代码：
<body>
<div id="top"> </div>
<form id="login" name="login" action="?Action=Login" method="post">
<div id="center">
<div id="center_left"></div>
<div id="center_middle">
<div class="user">
<label>用户名：
<input type="text" name="UserName" id="UserName" />
</label>
</div>
<br />
<div class="user">
<label>密 码：
<input type="password" name="UserPassword" id="UserPassword" />
</label>
</div>
</div>
<div id="center_middle_right"></div>
<div id="center_submit">
<div class="button"> <img alt="" id="loginin" src="images/dl.gif" width="57" height="20" onclick="document.login.submit()"/> </div>
<div class="button"> <img alt="" id="loginreset" src="images/cz.gif" width="57" height="20" onclick="document.login.reset()"/> </div>
</div>
<div id="center_right"></div>
</div>
</form>
<div id="footer"></div>
</body>
通过图片的点击事件，执行form.submit()传递form中的参数。
后台cs代码：
protected string Action = "";
myBaseClass myData = new myBaseClass();
protected class UserLoginInfo
{
public string UserName = "";
public string UserPassword = "";
}
protected UserLoginInfo _UserLoginInfo = new UserLoginInfo();//创建对象
protected void Page_Load(object sender, EventArgs e)
{
Init_WebControls();
}
public void Init_WebControls()
{
try
{
if (!string.IsNullOrEmpty(Request.QueryString["Action"]))//获取form的Action中的参数
{
Action = Request.QueryString["Action"].Trim().ToLower();//去掉空格并变小写
}
switch (Action)
{
case "login":
if (!string.IsNullOrEmpty(Request.Form["UserName"]) && !string.IsNullOrEmpty(Request.Form["UserPassWord"]))//获取form中的参数
{
_UserLoginInfo.UserName = Request.Form["UserName"].ToString();
_UserLoginInfo.UserPassword = Request.Form["UserPassWord"].ToString();
string user = "select 管理员名称,密码 from T_管理员表 where 管理员名称='" + _UserLoginInfo.UserName + "' and 密码='" + _UserLoginInfo.UserPassword + "'";
if (myData.readDataSet(user).Tables[0].Rows.Count == 1)
{
Response.Redirect("Main.aspx", false);//防止Response.End 方法终止页的执行
}
else
{
Response.Write("<Script Language=JavaScript>alert('密码或用户名错误，请重试！');</Script>");
}
}
break;
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}