验证码程序

usingSystem;
usingSystem.Data;
usingSystem.Configuration;
usingSystem.Collections;
usingSystem.Web;
usingSystem.Web.Security;
usingSystem.Web.UI;
usingSystem.Web.UI.WebControls;
usingSystem.Web.UI.WebControls.WebParts;
usingSystem.Web.UI.HtmlControls;
usingSystem.Drawing;
usingSystem.Drawing.Drawing2D;
usingSystem.Drawing.Imaging;

publicpartialclassmy_ValidateImage:System.Web.UI.Page
...{
privatereadonlystringImagePath="../images/Validator.jpg";
privatestaticstringsValidator="";
protectedvoidPage_Load(objectsender,EventArgse)
...{
if(Request.Params["Validator"]!=null)
...{
sValidator=Request.Params["validator"].ToString();
}
BitmapbitMapImage=newSystem.Drawing.Bitmap(Server.MapPath(ImagePath));
GraphicsgraphicImage=Graphics.FromImage(bitMapImage);
graphicImage.SmoothingMode=SmoothingMode.AntiAlias;
graphicImage.DrawString(sValidator,newFont("Arial",20,FontStyle.Bold),SystemBrushes.WindowText,newPoint(0,0));
Response.ContentType="image/jpeg";
//bitMapImage.sava(Response.OutputStream,ImageFormat.Jpeg);
bitMapImage.Save(Response.OutputStream,ImageFormat.Jpeg);
graphicImage.Dispose();
bitMapImage.Dispose();

}
}

usingSystem;
usingSystem.Data;
usingSystem.Configuration;
usingSystem.Collections;
usingSystem.Web;
usingSystem.Web.Security;
usingSystem.Web.UI;
usingSystem.Web.UI.WebControls;
usingSystem.Web.UI.WebControls.WebParts;
usingSystem.Web.UI.HtmlControls;

publicpartialclassmy_Default:System.Web.UI.Page
...{
staticstringsValidator="134";
privatereadonlystringsValidatorImageUrl="ValidateImage.aspx?Validator=";

protectedvoidPage_Load(objectsender,EventArgse)
...{
if(!Page.IsPostBack)
...{
Randomr=newRandom(10);
sValidator=r.Next().ToString();

//sValidator=GetRandomint();
//sValidator="456789";
//sValidator=GetRandomint();
//sValidator=GetRandomint();
//sValidator=Getrandomint();
//validateimage.ImageUrl=svalidatorImageUrl+svalidator;
//ValidateImage.ImageUrl=sValidatorImageUrl+sValidator;

ValidateImage.ImageUrl=sValidatorImageUrl+sValidator;
//ValidateImage.ImageUrl="../images/index1.jpg";
}
}

privatestringGetRandomint()
...{
thrownewException("Themethodoroperationisnotimplemented.");
}

privatestringGetrandomint()
...{
thrownewException("Themethodoroperationisnotimplemented.");
}
protectedvoidButton1_Click(objectsender,EventArgse)
...{
inta=0;
if(a<1)
...{
//Response.Write("<script>window.alert('"asdkfkasd"')</script>");
//Response.Write("<script>alert("li")</script>");
return;

}
Response.Redirect("~/default.htm");
}
}

每次产生的验证码过程，继续处理中。。。。。。。。
确保产生的验证码介于（10000，999999）之间
sValidator = r.Next(100000,999999).ToString();