Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

C#ÖÐString.EmptyÓë""

    ÕâÁ½¸öÔÚÒ»°ãÇé¿öÏÂÊÇÏàµÈµÄ£¬µ«ÊÇϵͳ´¦Àí»úÖÆÉÏÈ´ÓÐËù²»Í¬¡£
    ""»áÔÚÄÚ´æÀï»®Ò»¿é³¤¶ÈΪ0µÄ´æ´¢¿Õ¼ä£¬¶øString.EmptyÄÚ´æ²¢²»ÎªËü·ÖÅä¿Õ¼ä£¬ËùÒÔÎÞÂÛÐÔÄÜ»¹ÊÇËÙ¶ÈÉÏString.Empty¶¼ÓÅÓÚ""¡£
    Ôø¾­¿´¹ýһƪÅжÏ×Ö·û´®¿ÕÖµµÄÐÔÄÜÎÄÕ£¬ÀÏÍâдµÄ¹úÈË·­Ò룬ÎÄÕ´óÒâÈçÏ£º
    ¶ÔÓÚÒ»¸östringÀàÐ͵ıäÁ¿a£¬Äã»áÓÃÄÄÖÖ·½Ê½ÅжÏËüΪ¿Õ£¬Ò»°ãÓÐÒÔÏÂÈýÖÖ£º
    a == ""
    a == String.Empty
    a.length == 0
    ÄÇô£¬Äã»áÓÃÄÄÖÖ·½Ê½Åжϣ¿ÀÏÍâÎÄÕÂÖÐÖ¸³öЧÂÊÉÏ 3 > 2 > 1£¬Ò²¾ÍÊÇa.length == 0 > a == String.Empty > a == ""¡£
    ÄÇô£¬½áÂÛÊÇ£¬¸³¿Õ×Ö·û´®ÇëÓÃString.Empty£¨NULL²»ÄÜÊä³ö£¬Empty¿ÉÒÔÊä³ö£©£¬ÅжϿÕ×Ö·û´®ÇëÓÃlength¡£


Ïà¹ØÎĵµ£º

ÊÖ°ÑÊÖ½ÌÄãC#¶ÁÈ¡XMLÎļþ

C#¶ÁÈ¡XML×ÊÁÏ
Ò» C#¶ÁÈ¡XML×ÊÁÏ
À©³ä±ê¼ÇÓïÑÔXML£¨eXtensible Markup Language£©£¬ÊÇÓÉWÈýC»ú¹ØÖƶ©µÄ¡£×öΪÓÃÒÔ´úÌæHTMLÓïÑÔµÄÒ»ÖÖÐÂʽµÄ±ê¼ÇÓïÑÔ£¬XMLÄÚ²¿ÓÐןܶà¸ù±¾»ù×¼£¬XMLÄËÊǾ­¹ýÓëÕâЩÏà¸É»ù×¼µØ×éºÏ£¬Ó¦ÓÃÓÚ¿ÆÑ§¼ÆËã¡¢µç×Ó³ö°æ¡¢¶àýÌåϵÌåÀý×÷ºÍµç×ÓÉÌÎñµÄ¡£C££×÷ΪһÖÖÐÂʽµÄ³ÌÐòÓïÑÔ£¬ÊÇ.Net¹¹¼ÜµÄÒ»¸öÖ ......

C#²Ù×÷SQL ServerÊý¾Ý¿â(ת)


Visual C#Öж¯Ì¬²Ù×÷SQL ServerÊý¾Ý¿â £¨1£©
 
·¢²¼Ê±¼ä£º2003.01.14 10:09     À´Ô´£ºÈüµÏÍø    ×÷ÕߣºÍõ¿­Ã÷
ÔÚ±àдÊý¾Ý¿âÓ¦ÓóÌÐòµÄʱºò£¬ÎÒÃÇ¿ÉÒÔͨ¹ýSQLÓï¾äÀ´¶¯Ì¬´´½¨¡¢ÐÞ¸ÄÊý¾Ý¿âÒÔ¼°ÆäÖеĶÔÏó¡£±¾ÎÄÎÒ¾ÍÏò´ó¼Ò½éÉÜÈçºÎÔËÓÃVisual C#À´¶¯Ì¬²Ù×÷SQL ServerÊý¾Ý¿ ......

c#(asp.net) updatepanel ¾Ö²¿Ë¢ÐÂʵÀýÊÕ²Ø

1
<asp:UpdatePanelID="UpdatePanel1"
        UpdateMode="Conditional"
        runat="server">
    <ContentTemplate>
        <asp:Button ID="Button1"
      ......

C#СTip£ºXml²Ù×÷¼òÃ÷ÊÖ²á 2


2£©ÈçºÎ´´½¨Ò»¸öxmlÎĵµ
ÓÉÓÚxmlʵÖÊÒ²Ö»ÊÇÒ»¸öÎı¾Îļþ£¬ËùÒÔ×î¼òµ¥Äã¿ÉÒÔÖ±½ÓʹÓÃSystem.IOϵÄÀàÉú³ÉÒ»¸öÎļþ£¬²¢´æ´¢³ÉxmlÎļþ£¬µ±È»£¬ÄãÐèÒªÊÖ¶¯±£Ö¤¸ÃÎļþÐÎʽÁ¼ºÃ£¬±ÈÈç±ØÐëÓиùÔªËØ¡¢±ØÐëÓйرձêÇ©¡¢±ØÐëÕýȷǶÌ׵ȵȡ£
 
Èç¹ûÄãÀÁµÃ×Ô¼ºÈ¥ÏëÎļþµÄÐÎʽ£¬¿ÉÒÔʹÓÃSystem.XmlϵÄÀà¡£
 
Code
Xml ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ