富贵资源网 Design By www.hznty.com
一个生成不重复随机数的方法
//生成不重复随机数算法
private int GetRandomNum(int i,int length,int up,int down)
{
int iFirst=0;
Random ro=new Random(i*length*unchecked((int)DateTime.Now.Ticks));
iFirst=ro.Next(up,down);
return iFirst;
}
发表于 @ 2005年12月30日 3:44 PM | 评论 (0)
ASP.NET多文件上传方法
前台代码
<script language="Javascript">
function addFile()
{
var str = '<INPUT type="file" size="30" NAME="File"><br>'
document.getElementById('MyFile').insertAdjacentHTML("beforeEnd",str)
}
</script>
<form id="form1" method="post" runat="server" enctype="multipart/form-data">
<div align="center">
<h3>多文件上传</h3>
<P id="MyFile"><INPUT type="file" size="30" NAME="File"><br></P>
<P>
<input type="button" value="增加(Add)" onclick="addFile()"> <input onclick="this.form.reset()" type="button" value="重置(ReSet)">
<asp:Button Runat="server" Text="开始上传" ID="UploadButton">
</asp:Button>
</P>
<P>
<asp:Label id="strStatus" runat="server" Font-Names="宋体" Font-Bold="True" Font-Size="9pt" Width="500px"
BorderStyle="None" BorderColor="White"></asp:Label>
</P>
</div>
</form>
后台代码
protected System.Web.UI.WebControls.Button UploadButton;
protected System.Web.UI.WebControls.Label strStatus;
private void Page_Load(object sender, System.EventArgs e)
{
/// 在此处放置用户代码以初始化页面
if (this.IsPostBack) this.SaveImages();
}
private Boolean SaveImages()
{
///'遍历File表单元素
HttpFileCollection files = HttpContext.Current.Request.Files;
/// '状态信息
System.Text.StringBuilder strMsg = new System.Text.StringBuilder();
strMsg.Append("上传的文件分别是:<hr color=red>");
try
{
for(int iFile = 0; iFile < files.Count; iFile++)
{
///'检查文件扩展名字
HttpPostedFile postedFile = files[iFile];
string fileName,fileExtension,file_id;
//取出精确到毫秒的时间做文件的名称
int year = System.DateTime.Now.Year;
int month = System.DateTime.Now.Month;
int day = System.DateTime.Now.Day;
int hour = System.DateTime.Now.Hour;
int minute = System.DateTime.Now.Minute;
int second = System.DateTime.Now.Second;
int millisecond = System.DateTime.Now.Millisecond;
string my_file_id = year.ToString() + month.ToString() + day.ToString() + hour.ToString() + minute.ToString() + second.ToString() + millisecond.ToString()+iFile.ToString();
fileName = System.IO.Path.GetFileName(postedFile.FileName);
fileExtension = System.IO.Path.GetExtension(fileName);
file_id = my_file_id+fileExtension;
if (fileName != "")
{
fileExtension = System.IO.Path.GetExtension(fileName);
strMsg.Append("上传的文件类型:" + postedFile.ContentType.ToString() + "<br>");
strMsg.Append("客户端文件地址:" + postedFile.FileName + "<br>");
strMsg.Append("上传文件的文件名:" + file_id + "<br>");
strMsg.Append("上传文件的扩展名:" + fileExtension + "<br><hr>");
postedFile.SaveAs(System.Web.HttpContext.Current.Request.MapPath("images/") + file_id);
}
}
strStatus.Text = strMsg.ToString();
return true;
}
catch(System.Exception Ex)
{
strStatus.Text = Ex.Message;
return false;
}
}
发表于 @ 2005年12月30日 3:37 PM | 评论 (0)
邮件系统使用的上传附件方法
前台HTML代码
<form id="mail" method="post" runat="server">
<table border="0" cellpadding="0" cellspacing="0" style="BORDER-COLLAPSE: collapse" bordercolor="#111111"
width="39%" id="AutoNumber1" height="75">
<tr>
<td width="100%" height="37"><INPUT id="myFile" style="WIDTH: 297px; HEIGHT: 22px" type="file" size="30" name="myFile"
runat="server">
<asp:button id="Upload" runat="server" Text="上传附件"></asp:button></td>
</tr>
<tr>
<td width="100%" height="38">
共计
<asp:textbox id="P_size" runat="server" Width="65px"></asp:textbox>KB
<asp:dropdownlist id="dlistBound" runat="server"></asp:dropdownlist>
<asp:button id="btnDel" runat="server" Text="删除附件"></asp:button></td>
</tr>
</table>
</form>
后台CS代码
public class Upload_Mail : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Button Upload;
protected System.Web.UI.WebControls.DropDownList dlistBound;
protected System.Web.UI.WebControls.TextBox P_size;
protected System.Web.UI.WebControls.Button btnDel;
protected System.Web.UI.HtmlControls.HtmlInputFile myFile;
private void Page_Load(object sender, System.EventArgs e)
{
if (!IsPostBack)
{
//没有附件的状态
dlistBound.Items.Clear();
ArrayList arr = new ArrayList();
arr.Add("--没有附件--");
dlistBound.DataSource = arr ;
dlistBound.DataBind();
P_size.Text = "0";
}
}
private void Upload_Click(object sender, System.EventArgs e)
{
if(myFile.PostedFile !=null)
{
HttpFileCollection files = HttpContext.Current.Request.Files;
HttpPostedFile postedFile = files[0];
string fileName = System.IO.Path.GetFileName(postedFile.FileName);
string path = Request.PhysicalApplicationPath+@"UploadMail\"+ fileName;
postedFile.SaveAs(path);
//数组对上存附件进行实时绑定
if((string)Session["udMail"]==null)
{
Session["udMail"] = fileName;
}
else
{
Session["udMail"] = (string)Session["udMail"]+"|"+fileName;
}
string[] udMail = Session["udMail"].ToString().Split('|');
ArrayList list = new ArrayList(udMail);
list.Reverse();
udMail=(string[])list.ToArray(typeof(string));
dlistBound.Items.Clear();
long dirsize=0;
for(int i = 0;i<udMail.Length;i++)
{
string IndexItem = udMail[i];
string VauleItem = Request.PhysicalApplicationPath+@"UploadMail\"+udMail[i];
dlistBound.Items.Add(new ListItem(IndexItem,VauleItem));
System.IO.FileInfo mysize = new System.IO.FileInfo(@VauleItem);
dirsize += System.Convert.ToInt32(mysize.Length/1024)+1;
}
P_size.Text = dirsize.ToString();
}
}
private void btnDel_Click(object sender, System.EventArgs e)
{
string trueDelfile = dlistBound.SelectedValue.ToString();
string Delfile = dlistBound.SelectedItem.ToString();
usageIO.DeletePath(trueDelfile);
if(Session["udMail"] != null)
{
int index = Session["udMail"].ToString().IndexOf("|");
if(index == -1)
{
Session["udMail"] = null;
dlistBound.Items.Clear();
dlistBound.Items.Add("--没有附件--");
P_size.Text = "0";
}
else
{
string[] udMail = Session["udMail"].ToString().Split('|');
ArrayList values = new ArrayList(udMail);
values.Remove(Delfile);
string s = null;
for(int i=0;i<values.Count;i++)
{
if(values.Count!=0)
{
s += values[i].ToString()+"|";
}
}
if(s!=""||s!=null)
{
s = s.TrimEnd('|');
}
Session["udMail"] = s;
string[] uMail = Session["udMail"].ToString().Split('|');
ArrayList list = new ArrayList(uMail);
list.Reverse();
uMail=(string[])list.ToArray(typeof(string));
dlistBound.Items.Clear();
long dirsize=0;
for(int i = 0;i<uMail.Length;i++)
{
string IndexItem = uMail[i];
string VauleItem = Request.PhysicalApplicationPath+@"UploadMail\"+uMail[i];
dlistBound.Items.Add(new ListItem(IndexItem,VauleItem));
System.IO.FileInfo mysize = new System.IO.FileInfo(@VauleItem);
dirsize += System.Convert.ToInt32(mysize.Length/1024)+1;
}
P_size.Text = dirsize.ToString();
}
}
}
Web 窗体设计器生成的代码#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/**//// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.Upload.Click += new System.EventHandler(this.Upload_Click);
this.btnDel.Click += new System.EventHandler(this.btnDel_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
}
发表于 @ 2005年12月30日 3:29 PM | 评论 (0)
上传图片并且生成可以控制大小图片清晰度的方法
private void Upload_Click(object sender, System.EventArgs e)
{
if(myFile.PostedFile !=null)
{
// 检查文件扩展名字
HttpFileCollection files = HttpContext.Current.Request.Files;
HttpPostedFile postedFile = files[0];
string fileName,fileExtension,file_id,file_path;
//取出精确到毫秒的时间做文件的名称
int year = System.DateTime.Now.Year;
int month = System.DateTime.Now.Month;
int day = System.DateTime.Now.Day;
int hour = System.DateTime.Now.Hour;
int minute = System.DateTime.Now.Minute;
int second = System.DateTime.Now.Second;
int millisecond = System.DateTime.Now.Millisecond;
string my_file_id = year.ToString() + month.ToString() + day.ToString() + hour.ToString() + minute.ToString() + second.ToString() + millisecond.ToString();
//获得文件类型
fileName = System.IO.Path.GetFileName(postedFile.FileName);
fileExtension = System.IO.Path.GetExtension(fileName);
//重新命名文件,防止重复
file_id = "topnews_"+my_file_id+fileExtension;
file_path = "images/article_images/"+file_id;
//文件上传到服务器的根目录
postedFile.SaveAs(Request.PhysicalApplicationPath+@"images\article_images\"+ file_id);
//处理图片大小
int width,height,level;
width=120;
height=90;
level=100;//从1-100
GetThumbnailImage(width,height,level,file_id);
}
}
//生成缩略图函数
public void GetThumbnailImage(int width,int height,int level,string file_id)
{
string newfile= Request.PhysicalApplicationPath+"images/article_images/"+"top_"+ file_id;
System.Drawing.Image oldimage = System.Drawing.Image.FromFile(Request.PhysicalApplicationPath+"images/article_images/"+ file_id);
System.Drawing.Image thumbnailImage = oldimage.GetThumbnailImage(width, height,new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback), IntPtr.Zero);
Bitmap output=new Bitmap(thumbnailImage);
//处理JPG质量的函数
ImageCodecInfo[] codecs=ImageCodecInfo.GetImageEncoders();
ImageCodecInfo ici=null;
foreach(ImageCodecInfo codec in codecs){if(codec.MimeType=="image/jpeg")ici=codec;}
EncoderParameters ep=new EncoderParameters();
ep.Param[0]=new EncoderParameter(Encoder.Quality,(long)level);
output.Save(newfile,ici,ep);
//释放所有使用对象
ep.Dispose();
output.Dispose();
oldimage.Dispose();
thumbnailImage.Dispose();
//删除源图片
string file_path = "images/article_images/"+"top_"+file_id;
usageIO.DeletePath(Request.PhysicalApplicationPath+"images/article_images/"+ file_id);
Response.Write("<script >parent.Form1.A_Simg.value ='"+file_path+"';location.replace('Upload_Img.aspx')</script>");
}
bool ThumbnailCallback()
{
return false;
}
发表于 @ 2005年12月30日 3:25 PM | 评论 (0)
生成高清晰度的缩略图[方法1]
public void pic_zero(string sourcepath,string aimpath,int scale)
{
string originalFilename =sourcepath;
//生成的高质量图片名称
string strGoodFile =aimpath;
//从文件取得图片对象
System.Drawing.Image image = System.Drawing.Image.FromFile(originalFilename);
int iImgWidth = image.Width;
int iImgHeight = image.Height;
int iScale = (iImgWidth / scale)>(iImgHeight/scale) ? (iImgWidth / scale) : (iImgHeight / scale);
//取得图片大小
System.Drawing.Size size = new Size(image.Width / iScale , image.Height / iScale);
//新建一个bmp图片
System.Drawing.Image bitmap = new System.Drawing.Bitmap(size.Width,size.Height);
//新建一个画板
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
//设置高质量插值法
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
//设置高质量,低速度呈现平滑程度
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
//清空一下画布
g.Clear(Color.Blue);
//在指定位置画图
g.DrawImage(image, new System.Drawing.Rectangle(0, 0, bitmap.Width, bitmap.Height),
new System.Drawing.Rectangle(0, 0, image.Width,image.Height),
System.Drawing.GraphicsUnit.Pixel);
//保存高清晰度的缩略图
bitmap.Save(strGoodFile, System.Drawing.Imaging.ImageFormat.Jpeg);
g.Dispose();
}
发表于 @ 2005年12月30日 3:23 PM | 评论 (0)
比较完美的图片验证码
需要引用的名字空间
using System.IO;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
public class ValidationCodeImg : System.Web.UI.Page
{
private void Page_Load(object sender, System.EventArgs e)
{
this.CreateCheckCodeImage(GenerateCheckCode());
}
private string GenerateCheckCode()
{
int number;
char code;
string checkCode = String.Empty;
System.Random random = new Random();
for(int i=0; i<5; i++)
{
number = random.Next();
if(number % 2 == 0)
code = (char)('0' + (char)(number % 10));
else
code = (char)('0' + (char)(number % 10));
checkCode += code.ToString();
}
Response.Cookies.Add(new HttpCookie("CheckCode", checkCode));
return checkCode;
}
private void CreateCheckCodeImage(string checkCode)
{
if(checkCode == null || checkCode.Trim() == String.Empty)
return;
System.Drawing.Bitmap image = new System.Drawing.Bitmap((int)Math.Ceiling((checkCode.Length * 12.5)), 24);
Graphics g = Graphics.FromImage(image);
try
{
//生成随机生成器
Random random = new Random();
//清空图片背景色
g.Clear(Color.White);
//画图片的背景噪音线
for(int i=0; i<2; i++)
{
int x1 = random.Next(image.Width);
int x2 = random.Next(image.Width);
int y1 = random.Next(image.Height);
int y2 = random.Next(image.Height);
g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2);
}
Font font = new System.Drawing.Font("Tahoma", 12, (System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic));
System.Drawing.Drawing2D.LinearGradientBrush brush = new System.Drawing.Drawing2D.LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), Color.Black, Color.Black, 1.2f, true);
g.DrawString(checkCode, font, brush, 2, 2);
//画图片的前景噪音点
for(int i=0; i<100; i++)
{
int x = random.Next(image.Width);
int y = random.Next(image.Height);
image.SetPixel(x, y, Color.FromArgb(random.Next()));
}
//画图片的边框线
g.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
Response.ClearContent();
Response.ContentType = "image/Gif";
Response.BinaryWrite(ms.ToArray());
}
finally
{
g.Dispose();
image.Dispose();
}
}
发表于 @ 2005年12月30日 3:09 PM | 评论 (0)
IE订单的打印处理办法
在一个商城项目应用中我需要把客户在网上下的订单使用IE打印出来
首先必须控制订单不能出现IE的页眉页脚(需要使用ScriptX)
<OBJECT id="factory" style="DISPLAY: none" codeBase="http://www.meadroid.com/scriptx/ScriptX.cab#Version=5,60,0,360"
classid="clsid:1663ed61-23eb-11d2-b92f-008048fdd814" viewastext>
</OBJECT>
<SCRIPT defer>
function println() {
factory.printing.header = ""
factory.printing.footer = ""
factory.printing.Print(true)
factory.printing.leftMargin = 0.2
factory.printing.topMargin = 0.5
factory.printing.rightMargin = 0.2
factory.printing.bottomMargin = 1.5
window.print();
}
</SCRIPT>
然后主要是控制订单数据输出用什么办法显示出来,为了灵活的控制输出效果,我这里使用的是循环读入数据(定购的商品)的办法(下面的代码是我使用的)
public string myOrder(string B_No)
{
doData.conn.Open();
string strFirstMenu =null;
string strSql = "select Items_Type,Items_Name,Items_Unit,Items_Count,Items_Price from [OrderItems] where Order_No = '"+B_No+"' order by ID desc";
SqlDataAdapter da = new SqlDataAdapter(strSql,doData.conn);
DataSet ds = new DataSet();
da.Fill(ds,"myOrder");
int count = ds.Tables[0].Rows.Count;
string Items_Type,Items_Name,Items_Price,Items_Count,Items_Unit,Items_TotalPrice;
Double Items_AllTotalPrice = 0;
int Items_TotalCount = 0;
string begin = "<table id =\"inc\"style=\"BORDER-COLLAPSE: collapse\" borderColor=\"#111111\" height=\"35\" cellSpacing=\"0\" cellPadding=\"0\" width=\"95%\" border=\"1\"><tr><td align=\"center\" width=\"14%\" height=\"35\">商品编号</td><td align=\"center\" width=\"25%\" height=\"35\">商品名称</td><td align=\"center\" width=\"10%\" height=\"35\">单位</td><td align=\"center\" width=\"10%\" height=\"35\">数量</td><td align=\"center\" width=\"20%\" height=\"35\">单价(元)</td><td align=\"center\" width=\"21%\" height=\"35\">金额(元)</td></tr>";
for(int rb = 0; rb < count;rb++)
{
Items_Type = ds.Tables[0].Rows[rb][0].ToString();
Items_Name = ds.Tables[0].Rows[rb][1].ToString();
Items_Unit = ds.Tables[0].Rows[rb][2].ToString();
Items_Count = ds.Tables[0].Rows[rb][3].ToString();
Items_Price = Double.Parse(ds.Tables[0].Rows[rb][4].ToString()).ToString("0.00");
Items_TotalPrice = (Double.Parse(Items_Price)*Double.Parse(Items_Count)).ToString("0.00");
Items_AllTotalPrice += Double.Parse(Items_TotalPrice);
Items_TotalCount += Int32.Parse(Items_Count);
strFirstMenu += "<tr><td width=\"14%\" height=\"20\"> "+Items_Type+"</td><td width=\"25%\" height=\"20\">"+Items_Name+"</td><td width=\"10%\" height=\"20\">"+Items_Unit+"</td><td width=\"10%\" height=\"20\">"+Items_Count+"</td><td width=\"20%\" height=\"20\">"+Items_Price+"</td><td width=\"21%\" height=\"20\">"+Items_TotalPrice+"</td></tr>";
}
string FirstMenu = begin+strFirstMenu+"</table>";
doData.conn.Close();
return FirstMenu;
}
发表于 @ 2005年12月30日 3:06 PM | 评论 (0)
URL传输参数加密解密
最近做一个论坛入口时要实现帐号和密码不在IE地址栏出现而做的
index.aspx.cs (加密处理)
Byte[] Iv64={11, 22, 33, 44, 55, 66, 77, 85};
Byte[] byKey64={10, 20, 30, 40, 50, 60, 70, 80};
public string Encrypt(string strText)
{
try
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
Byte[] inputByteArray = Encoding.UTF8.GetBytes(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey64, Iv64), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
return Convert.ToBase64String(ms.ToArray());
}
catch(Exception ex)
{
return ex.Message;
}
}
private void btnLogin_Click(object sender, System.Web.UI.ImageClickEventArgs e)
{
DateTime nowTime = DateTime.Now;
string postUser = txtUser.Text.ToString();
string postPass = txtPassword.Text.ToString();
Response.Redirect("Login.aspx?clubID="+Encrypt(postUser+","+postPass+","+nowTime.ToString()));
}
login.aspx.cs (解密处理)
//随机选8个字节既为密钥也为初始向量
Byte[] byKey64={10, 20, 30, 40, 50, 60, 70, 80};
Byte[] Iv64={11, 22, 33, 44, 55, 66, 77, 85};
public string Decrypt(string strText)
{
Byte[] inputByteArray = new byte[strText.Length];
try
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
inputByteArray = Convert.FromBase64String(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey64, Iv64), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
System.Text.Encoding encoding = System.Text.Encoding.UTF8;
return encoding.GetString(ms.ToArray());
}
catch(Exception ex)
{
return ex.Message;
}
}
private void Page_Load(object sender, System.EventArgs e)
{
if(Request.Params["clubID"]!=null)
{
string originalValue = Request.Params["clubID"];
originalValue = originalValue.Replace(" ","+");
//+号通过url传递变成了空格。
string decryptResult = Decrypt(originalValue);
//DecryptString(string)解密字符串
string delimStr = ",";
char[] delimiterArray = delimStr.ToCharArray();
string [] userInfoArray = null;
userInfoArray = decryptResult.Split(delimiterArray);
string userName = userInfoArray[0];
User userToLogin = new User();
userToLogin.Username = userInfoArray[0];
userToLogin.Password = userInfoArray[1];
......
}
}
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稳了!魔兽国服回归的3条重磅消息!官宣时间再确认!
昨天有一位朋友在大神群里分享,自己亚服账号被封号之后居然弹出了国服的封号信息对话框。
这里面让他访问的是一个国服的战网网址,com.cn和后面的zh都非常明白地表明这就是国服战网。
而他在复制这个网址并且进行登录之后,确实是网易的网址,也就是我们熟悉的停服之后国服发布的暴雪游戏产品运营到期开放退款的说明。这是一件比较奇怪的事情,因为以前都没有出现这样的情况,现在突然提示跳转到国服战网的网址,是不是说明了简体中文客户端已经开始进行更新了呢?