ASP.NETÖÐʹÓÃÑéÖ¤Âë¼¼Êõ
ÓÉÓÚÑéÖ¤Âë¼¼ÊõÖзþÎñÆ÷³ÌÐòÐèÒª´´½¨ÑéÖ¤ÂëͼƬ£¬ÀïÃæÓõ½ÁËͼÐαà³Ì£¬Òò´Ë±¾½Ú¿Î³ÌÈÔÈ»ÊÇC#·¢ÏÖÖ®ÂõÄͼÐαà³ÌϵÁн̡̳£
¸ù¾ÝÑéÖ¤ÂëµÄÔÀí£¬ÎÒÃÇʹÓÃC#ÔÚASP.NETÖÐʵÏÖÁËÑéÖ¤ÂëµÄ¹¦ÄÜ¡£
checkimage.aspx
Ê×Ïȸù¾ÝÉϽڿγ̵ÄÄÚÈÝ£¬ÎÒÃÇÒª´´½¨Ò»¸öͼƬ·þÎñÒ³Ãæ£¬×¨ÃÅÓÃÓÚÌṩ°üº¬ÑéÖ¤ÂëÎı¾µÄͼƬ£¬Îª´ËÎÒÃǽ¨Á¢Ò»¸ö checkimage.aspx µÄÒ³Ãæ¡£ÆäHTML´úÂëºÜ¼òµ¥£¬Ö»ÓÐÒ»ÐУ¬²»Êä³öÈκÎÄÚÈÝ¡£ÔÚÆäPage_Load·½·¨ÖоÍÓд´½¨ÑéÖ¤ÂëͼƬµÄ¹ý³Ì¡£
// ´´½¨Ò»¸ö°üº¬Ëæ»úÄÚÈݵÄÑéÖ¤ÂëÎı¾
System.Random rand = new Random();
int len = rand.Next(4 , 6 );
char[] chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ".ToCharArray();
System.Text.StringBuilder myStr = new System.Text.StringBuilder();
for( int iCount = 0 ; iCount < len ; iCount ++ )
{
myStr.Append( chars[ rand.Next( chars.Length )]);
}
string text = myStr.ToString();
// ±£´æÑéÖ¤Âëµ½ session ÖÐÒÔ±ãÆäËûÄ£¿éʹÓÃ
this.Session["checkcode"] = text ;
Size ImageSize = Size.Empty ;
Font myFont = new Font("MS Sans Serif" , 20 );
// ¼ÆËãÑéÖ¤ÂëͼƬ´óС
using( Bitmap bmp = new Bitmap( 10 , 10 ))
{
using( Graphics g = Graphics.fromImage( bmp ))
{
SizeF size = g.MeasureString( text , myFont , 10000 );
ImageSize.Width = ( int ) size.Width + 8 ;
ImageSize.Height = ( int ) size.Height + 8 ;
}
}
// ´´½¨ÑéÖ¤ÂëͼƬ
using( Bitmap bmp = new Bitmap( ImageSize.Width , ImageSize.Height ))
{
// »æÖÆÑéÖ¤ÂëÎı¾
using( Graphics g = Graphics.fromImage( bmp ))
{
g.Clear( Color.White );
using( StringFormat f = new StringFormat())
{
&
Ïà¹ØÎĵµ£º
protected void Button1_Click(object sender, EventArgs e)
{
string fullName = this.File1.PostedFile.FileName;//»ñÈ¡ÉÏ´«ÎļþµÄȫ·¾¶
string size = th ......
µÚÒ»£º
private void Button1_Click( object sender, System.EventArgs e ) { Response.Redirect( Request.Url.ToString( ) ); } µÚ¶þ£º
private void Button2_Click( object sender, System.EventArgs e ) { Response.Write( " < script language=javascript>window.location.href=document.URL; < /sc ......
public class t3 : System.Web.UI.Page
{
private string str;//×Ö·û
&n ......
CheckBox ¿Ø¼þºÍ CheckBoxList ¿Ø¼þΪÓû§ÌṩÁËÒ»ÖÖÖ¸¶¨ÊÇ/·ñ£¨Õæ/¼Ù£©Ñ¡ÔñµÄ·½·¨¡£
Ò»¡¢¹¦ÄÜ
¿ÉÒÔʹÓà CheckBox ¿Ø¼þºÍ CheckBoxList ¿Ø¼þÖ´ÐÐÒÔϲÙ×÷£º
·µ±Ñ¡ÖÐij¸ö¸´Ñ¡¿òʱ½«ÒýÆðÒ³»Ø·¢¡£
·µ±Óû§Ñ¡ÖÐij¸ö¸´Ñ¡¿òʱ²¶»ñÓû§½»»¥¡£
·½«Ã¿¸ö¸´Ñ¡¿ò°ó¶ ......
ASP.NETÉú³ÉËæ»úÃÜÂë
ÔÚ¿ª·¢ÐèÒªÓû§×¢²áºó²ÅÄÜʹÓÃÌṩµÄ¸÷ÏÄܵÄÓ¦ÓóÌÐòʱ£¬ÔÚÐÂÓû§Ìá½»×¢²áÐÅÏ¢ºó£¬½Ï³£¼ûµÄ×ö·¨ÊÇÓɳÌÐòÉú³ÉËæ»úÃÜÂ룬Ȼºó·¢ËÍÃÜÂëµ½Óû§×¢²áʱÌîдµÄµç×ÓÐÅÏ䣬Óû§ÔÙÓÃÊÕµ½µÄÃÜÂëÀ´¼¤»îÆäÕÊ»§¡£
ʵÏÖASP.NETÉú³ÉËæ»úÃÜÂ빦ÄÜÊǺÜÈÝÒ׵ģ¬ÏÂÃæµÄ´úÂë¸ø³öÁËÍêÕûµÄʵÏÖ·½·¨£º
public static stri ......