高人帮忙看看，这是什么原因啊？

源码如下：
<script language="c#" runat="server">
private void Page_Load(object sender,System.EventArgs e)
{
 if(Page.IsPostBack)
 {    if(Title.Text.Trim()=="")
   {
   Response.Write("<script language=javascript>alert('请填入文章标题 !!')</script> ");
   }
       else if(UserName.Text.Trim()==""){Response.Write();}
       else if(WebAddress.Text.Trim()=="" ){Response.Write();}
       else if(Email.Text.Trim()=="" ){Response.Write();}
       else if(QQ.Text.Trim()==""){Response.Write();}
       else if(Where.Text.Trim()==""){Response.Write();}
   else if(Aticle.Text.Trim()==""){Response.Write();}

       else{
string strTitle=Title.Text.Trim().ToString();
                string strUserName=UserName.Text.Trim().ToString();
             string strWebAddress=WebAddress.Text.Trim().ToString();
string strEmail=Email.Text.Trim().ToString();
string strQQ=QQ.Text.Trim().ToString();
string strWhere=Where.Text.Trim().ToString();
string strAticle=Aticle.Text.Trim().ToString();


string strInsert="";
string Mycon="";
SqlCommand strCom = new SqlCommand(strInsert,Mycon);
Mycon.Open();
strCom.ExecuteNonQuery();
Mycon.Close();
                Response.Write();
      }
   }}
</script>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
</head>
<body>
<form runat="server"><table width="700" border="1" align="center" bordercolor="#000000" bgcolor="#CCCCCC">
  <tr>
    <td height="31" colspan="2"><div align="left">&gt;&gt;&gt;填写留言：</div></td>
    </tr>
  <tr>
    <td width="148" height="30"><div align="right">主题：</div></td>
    <td width="536" height="30"><asp:TextBox ID="Title" runat="server" TextMode="SingleLine" /></td>
  </tr>
  <tr>
    <td height="30"><div align="right">姓名：</div></td>
    <td height="30"><asp:TextBox ID="UserName" Height="30"  runat="server" TextMode="SingleLine" /></td>
  </tr>
  <tr>
    <td height="30"><div align="right">主页地址：</div></td>
    <td height="30">
     http://
       <asp:TextBox ID="WebAddress"    Height="30" runat="server" TextMode="SingleLine" />      </td>
  </tr>
  <tr>
    <td height="30"><div align="right">电子邮件：</div></td>
    <td height="30">
      <asp:TextBox ID="Email"  Height="30"  runat="server" TextMode="SingleLine" />    </td>
  </tr>
  <tr>
    <td height="30"><div align="right">QQ号码：</div></td>
    <td height="30">
      <asp:TextBox  TextMode="SingleLine" ID="QQ" Height="30" runat="server" />
</td>
  </tr>
  <tr>
    <td height="30"><div align="right">来自那里：</div></td>
    <td height="30">
      <asp:TextBox ID="Where" Height="30"  runat="server" TextMode="SingleLine" />    </td>
  </tr>
  <tr>
    <td height="107"><div align="right">留言内容：</div></td>
    <td>
      <asp:TextBox Height="107" ID="Aticle"  runat="server" TextMode="MultiLine" Width="536" Wrap="true" />      </td>
  </tr>
  <tr>
    <td height="32" colspan="2">
      <div align="center">
        <asp:Button ID="Button2" runat="server" Text="提交" BorderStyle="solid" />  
&nbsp;&nbsp;      
        <asp:Button ID="Button3" Text="重写" runat="server" />
&nbsp;&nbsp;        
        <asp:Button ID="Button1" runat="server" Text="返回" />        </div>
      <div align="center"></div>    </td>
  </tr>
  <tr bgcolor="#666666">
    <td height="60" colspan="2"> 1）留言者不能发布任何不符合当地法规、国家法律和国际法律的资料； <br>
2）留言者不得发布任何非法的、骚扰性的、中伤他人的、辱骂性的、恐吓性的、伤害性的、庸俗的，淫秽等信息资料； </td>
  </tr>
</table></form>
</body>
</html>

解决方案 »

  1.   

    都已经说明了“常数中有换行符”
    行 12：     Response.Write("<script language=javascript>alert('请填入文章标题 !!')</script> ");把它写为一行
    Response.Write("<script language=javascript>alert('请填入文章标 !!');</script> ");
      

  2.   

    Response.Write(@"<script language=javascript>
    <!--
    window.alert('请填入文章标题 !!');
    //-->
    </script>");
    ===================================================================Response.Write("<script>alert('请填入文章标题 !!')</script>");
    ==================================================================
    以上两种都可以
      

  3.   

    to reaperwu(RQ):
          wxlada(绿茶)： 
    我在DW里式写成一行的啊
      

  4.   


    试试看：
    Response.Write("<script language=javascript>alert('请填入文章标题 !!')</"+"script> ");