大家都说说,自己是怎么处理错误信息的,就是比如密码输入错误,怎么提示?标题是空的怎么提示?等等..

[daobanshang]

大家都说说,自己是怎么处理错误信息的,就是比如密码输入错误,怎么提示?标题是空的怎么提示?等等..

[whoami333]

密码错误一般都说“用户名或者密码错误”

标题是空，文本框后面显示一个红色的*号

...

[daobanshang]

[Quote=引用 1 楼 whoami333 的回复:]
密码错误一般都说“用户名或者密码错误”

标题是空，文本框后面显示一个红色的*号

...
[/Quote]

汗....我的意思是说,大致怎么实现的?

比如是转到一个提示错误的页,还是alert()之类的...

[whoami333]

个人感觉最好就是放个Label用于显示错误消息，不要弹来弹去的，省得浏览器提意见。

[NqIceCoffee]

[Quote=引用 3 楼 whoami333 的回复:]
个人感觉最好就是放个Label用于显示错误消息，不要弹来弹去的，省得浏览器提意见。
[/Quote]

有一点
当前的页又加载一遍
如果是数据加载量稍微大一点，有性能问题哦

[lijin84100]

response.write("<script>alert('用户或密码错误');location.href='页面名称';</script>")

[twin21cn]

[Quote=引用 5 楼 lijin84100 的回复:]
response.write(" <script>alert('用户或密码错误');location.href='页面名称'; </script>")
[/Quote]
或
使用Label都可以。登陆页面一般的数据都不应该很大吧

[color2002]

我是放在类库中进行处理的：
/// <summary>
/// 显示信息提示对话框 2007-3-23
/// </summary>
/// <param name="curPage">当前页面指针，一般为this</param>
/// <param name="msg">提示信息</param>
public static void ShowMsg(System.Web.UI.Page curPage, string msg)
{
if (curPage == null)
throw new ArgumentNullException("curPage");
else if (msg == null)
throw new ArgumentNullException("msg");
else
{
Type cstype = curPage.GetType();
curPage.ClientScript.RegisterStartupScript(cstype, "dd", "<script language='javascript' defer>alert('" + msg.ToString() + "');</script>");
}
} /// <summary>
/// 控件点击信息确认提示框 2007-3-23
/// </summary>
/// <param name="curPage">当前控件指针</param>
/// <param name="msg">弹出信息</param>
public static void ShowConfirm(System.Web.UI.WebControls.WebControl curPage, string msg)
{
if (curPage == null)
throw new ArgumentNullException("curPage");
else
curPage.Attributes.Add("onclick", "return confirm('" + msg + "');");
} /// <summary>
/// 显示信息提示对话框并进行页面跳转 2007-3-23
/// </summary>
/// <param name="curPage">当前页面指针，一般为this</param>
/// <param name="msg">提示信息</param>
/// <param name="reurl">跳转的目标URL</param>
public static void ShowAndRedirect(System.Web.UI.Page curPage, string msg, string reurl)
{
if (curPage == null)
throw new ArgumentNullException("curPage");
else if (msg == null)
throw new ArgumentNullException("msg");
else if (reurl == null)
throw new ArgumentNullException("reurl");
else
{
StringBuilder Builder = new StringBuilder();
Type cstype = curPage.GetType();
//使用StringBuilder类来创建字符串，StringBuilder类位于命名空间System.Text
//对字符串可以做一些基本的操作，比如Append、Replace、Insert、Remove等
Builder.Append("<script language='javascript' defer>");
Builder.AppendFormat("alert('{0}');", msg);
Builder.AppendFormat("window.location.href='{0}'", reurl);
Builder.Append("</script>");
curPage.ClientScript.RegisterStartupScript(cstype, "信息", Builder.ToString());
}
}
/// <summary>
/// 弹出信息并后退 2007-3-23
/// </summary>
/// <param name="curPage">当前页面指针，一般为this</param>
/// <param name="msg"></param>
public static void ShowAndGoBack(System.Web.UI.Page curPage, string msg)
{
if (curPage == null)
throw new ArgumentNullException("curPage");
else if (msg == null)
throw new ArgumentNullException("msg");
else
{
Type cstype = curPage.GetType();
curPage.ClientScript.RegisterStartupScript(cstype, "信息", "<script language='javascript' defer>alert('" + msg.ToString() + "');history.go(-1);</script>");
}
}
/// <summary>
/// 弹出信息并关闭 2007-3-23
/// </summary>
/// <param name="curPage">当前页面指针，一般为this</param>
/// <param name="msg"></param>
public static void ShowAndClose(System.Web.UI.Page curPage, string msg)
{
if (curPage == null)
throw new ArgumentNullException("curPage");
else if (msg == null)
throw new ArgumentNullException("msg");
else
{
Type cstype = curPage.GetType();
curPage.ClientScript.RegisterStartupScript(cstype, "信息", "<script language='javascript' defer>alert('" + msg.ToString() + "');window.close();</script>");
}
}
/// <summary>
/// 直接跳转页面 2007-3-23
/// </summary>
/// <param name="curPage">当前页面指针，一般为this</param>
public static void Redirect(System.Web.UI.Page curPage)
{
if (curPage == null)
throw new ArgumentNullException("curPage");

else
{
Type cstype = curPage.GetType();
curPage.ClientScript.RegisterStartupScript(cstype, "信息", "<script language='javascript' defer>window.location.href='" + HttpContext.Current.Request.Url.ToString() + "';\n</script>");
}
}
/// <summary>
/// 直接跳转页面 2007-3-23
/// </summary>
/// <param name="curPage">当前页面指针，一般为this</param>
/// <param name="reurl">要跳转的页面</param>
public static void Redirect(System.Web.UI.Page curPage, string reurl)
{
if (curPage == null)
throw new ArgumentNullException("curPage");
else if (reurl == null)
throw new ArgumentNullException("reurl");
else
{
Type cstype = curPage.GetType();
curPage.ClientScript.RegisterStartupScript(cstype, "信息", "<script language='javascript' defer>window.location.href='" + reurl + "';\n</script>");
}
}

................后面的就不贴了，很多

[BuleMiniCoper]

JS客户端验证最为合适的

[zhulinghappy]

用ajax + js 判断

一般都是用Label 提示的