.net 上传图片的2中方式

<script type="text/javascript">
        var i=1
        function addFile()
        {
    
         if (i<8)
            {var str = '<BR> <input type="file" name="File" runat="server" style="width: 300px"/>描述：<input name="text" type="text" style="width: 150px" maxlength="20" />'
            document.getElementById('MyFile').insertAdjacentHTML("beforeEnd",str)
       
            }
        else
            {
                alert("您一次最多只能上传8张图片！")
            }
            i++
        }
function verCode()
{
    alert("验证码输入错误");
}
</script>

<INPUT onclick="addFile()" type="button" value="增加图片(Add)"><br />
                                    <input />
===========================================================

.cs 代码
 


using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Drawing;
using System.Data.SqlClient;
using System.Text;   
protected void btnUpload_Click(object sender, EventArgs e)
    {
        if (Session["userid"] != null && Session["user"] != null && Session["model"] != null && Session["userid"].ToString() != "" && Session["user"].ToString() != "" && Session["model"].ToString() != "")
        {
            if (this.ddlAlbum.SelectedValue == "请选择产品的类别")
            {
                Jsp.Alert("请选择类别");
            }
            else
            {
                if (this.txtVerifyCode.Text.Trim().ToUpper() != Session["VerifyCode"].ToString())
                {
                    this.Page.ClientScript.RegisterStartupScript(this.GetType(), "define", "<script>verCode()</script>");//动态注册脚本
                }
                else
                {

                    lblMessage.Text = "";
                    lblMessage.Visible = false;
                    System.Web.HttpFileCollection files = System.Web.HttpContext.Current.Request.Files;
                    System.Text.StringBuilder strmsg = new System.Text.StringBuilder("");
                    string[] rd = Request.Form[1].Split(',');//获得图片描述的文本框字符串数组，为对应的图片的描述
                    string albumid = ddlAlbum.SelectedValue.Trim();
                    int ifile;
                    for (ifile = 0; ifile < files.Count; ifile++)
                    {
                        if (files[ifile].FileName.Length > 0)
                        {
                            System.Web.HttpPostedFile postedfile = files[ifile];

                            string fex = Path.GetExtension(postedfile.FileName);
                            if (fex != ".jpg" && fex != ".JPG" && fex != ".gif" && fex != ".GIF")
                            {
                                strmsg.Append(Path.GetFileName(postedfile.FileName) + "---图片格式不对，只能是jpg或gif<br>");
                                int num2 = ifile + 1;
                                Jsp.Alert("您选择的第" + num2 + "张图片错误！图片格式不正确只能是jpg或gif");
                                imgState = false; break;
                            }
                            if (postedfile.ContentLength > 200 * 1024)//单个文件不能大于200k
                            {
                                strmsg.Append(Path.GetFileName(postedfile.FileName) + "---不能大于1024k<br>");
                                int num1 = ifile + 1;
                                Jsp.Alert("您选择的第" + num1 + "张图片错误！图片大小不能大于200K");
                                imgState = false; break;
                            }

                            System.Drawing.Image image = System.Drawing.Image.FromStream(files[ifile].InputStream);
                            int width = image.Width;
                            int height = image.Height;
                            int num = ifile + 1;
                            if (width > 300 || height > 500)
                            {
                                Jsp.Alert("您选择的第" + num + "张图片错误！您的图片是" + width + "*" + height + "！请您重新上传尺寸小于300*500的图片");
                                imgState = false; break;
                            }
                        }
                    }

                    if (strmsg.Length <= 0)//说明图片大小和格式都没问题
                    {
                        //以下为创建图库目录
                        //string dirname = "pic00" + ddlAlbum.SelectedValue.Trim();

                        string dirpath = Server.MapPath("..//..//dress_corp/ProIMG");
                        //dirpath = dirpath +"\\" + dirname;
                        if (Directory.Exists(dirpath) == false)
                        {
                            Directory.CreateDirectory(dirpath);
                        }
                        Random ro = new Random();
                        int name = 1;
                        if (imgState)
                        {
                            try
                            {
                                for (int i = 0; i < files.Count; i++)
                                {
                                    System.Web.HttpPostedFile myFile = files[i];
                                    string FileName = "";
                                    string FileExtention = "";
                                    string PicPath = "";
                                    FileName = System.IO.Path.GetFileName(myFile.FileName);
                                    string stro = ro.Next(100, 100000000).ToString() + name.ToString();//产生一个随机数用于新命名的图片
                                    string NewName = DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + DateTime.Now.Millisecond.ToString() + stro;
                                    if (FileName.Length > 0)//有文件才执行上传操作再保存到数据库
                                    {
                                        FileExtention = System.IO.Path.GetExtension(myFile.FileName);

                                        string ppath = dirpath + "\\" + NewName + FileExtention;
                                        myFile.SaveAs(ppath);
                                        string FJname = FileName;
                                        PicPath = NewName + FileExtention;

                                    }
                                    AddPicture(PicPath, rd[i], albumid);//将图片信息保存到数据库
                                }

                                Jsp.GoBack("添加成功", "qy-fab-list.aspx");

                            }
                            catch
                            {
                                Jsp.Alert("添加失败");
                            }
                        }

                    }
                    else
                    {
                        lblMessage.Text = strmsg.ToString();
                        lblMessage.Visible = true;
                    }

                }

            }
        }
        else
        {
            Jsp.GoBack("连接超时，请重新登陆！", "/user/login.aspx");
        }
    }

    public void AddPicture(string imgpath, string imgnote, string albumid)
    {
        StringBuilder strSql = new StringBuilder();
        strSql.Append("insert into e_ProShowPhoto(");
        strSql.Append("PhotoTitle,PhotoFileName,CateType,UserID)");
        strSql.Append(" values (");
        strSql.Append("@PhotoTitle,@PhotoFileName,@CateType,@UserID)");
        SqlParameter[] parameters = {
     new SqlParameter("@PhotoTitle", SqlDbType.VarChar,40),
     new SqlParameter("@PhotoFileName", SqlDbType.VarChar,50),
     new SqlParameter("@CateType", SqlDbType.VarChar,50),
     new SqlParameter("@UserID", SqlDbType.Int,4)
     };
        parameters[0].Value = imgnote;
        parameters[1].Value = imgpath;
        parameters[2].Value = albumid;
        parameters[3].Value = userID;
        SqlHelper.ExecuteSql(strSql.ToString(), parameters);
    }

==============================

<form id="form1" runat="server">
.net 上传图片的2中方式<div>
  图片上传：生成缩略图 加文字水印 图片水印<br />
<br />
<asp:FileUpload ID="FileUpload1" runat="server" />
 <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="上传图片" /><br />
<asp:Label ID="Label1" runat="server"></asp:Label><br />
 <br />
远程图片抓取（保存到本地）支持jpg、gif、bmp、png<br />
图片抓取后自动以日期+原名称命名<br />
输入远程图片地址（支持Html）<br />
<asp:TextBox ID="TextBox1" runat="server" Height="308px" TextMode="MultiLine" Width="584px"></asp:TextBox>
<asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="开始抓取" /></div>
</form>




using System.Configuration;
  4.net 上传图片的2中方式using System.Collections;
  5.net 上传图片的2中方式using System.Web;
  6.net 上传图片的2中方式using System.Web.Security;
  7.net 上传图片的2中方式using System.Web.UI;
  8.net 上传图片的2中方式using System.Web.UI.WebControls;
  9.net 上传图片的2中方式using System.Web.UI.WebControls.WebParts;
10.net 上传图片的2中方式using System.Web.UI.HtmlControls;
11.net 上传图片的2中方式using System.IO;
12.net 上传图片的2中方式using System.Net;
13.net 上传图片的2中方式using System.Text.RegularExpressions;
14.net 上传图片的2中方式
15.net 上传图片的2中方式namespace ImgUpload
16.net 上传图片的2中方式.net 上传图片的2中方式                            }
                        }
                    }


                }
                else
                {
                    if (infotype == "今日新款")
                    {
                        guangGao = "<img src='/Wholesale%20Member/background/jrxk/PiFaImg/no.gif'></img>";
                    }
                    if (infotype == "特价商品")
                    {
                        guangGao = "<img src='/Wholesale%20Member/background/tjsp/PiFaImg/no.gif'></img>";
                    }
                }


=============
    public static  string[] SetMoreInfo(string str,char chr)
    {

      
        if (str == String.Empty || str == null)
            return null;
        else
        {
            string[] alist = str.Split(chr);
            return alist;
        }
    }
============
   /// <summary>
    /// 便利指定路径下的图片
    /// </summary>
    /// <param name="path">路径</param>
    /// <param name="picName">图片名</param>
    /// <returns>bool有的话true,没有的话就false</returns>
    public static bool GetImgState(string path,string picName)
    {
        if (File.Exists(System.Web.HttpContext.Current.Server.MapPath(path + picName)))
        {
           
            return true;
        }
        else
        {
            return false;
        }
    }
    /// <summary>
    /// 判断图片是否存在 并且判断是否在指定范围内
    /// </summary>
    /// <param name="path"></param>
    /// <param name="picName"></param>
    /// <param name="width"></param>
    /// <param name="height"></param>
    /// <returns></returns>
    public static bool GetImgStateBySize(string path, string picName, int width, int height)
    {
        if (File.Exists(System.Web.HttpContext.Current.Server.MapPath(path + picName)))
        {
            System.Drawing.Image image = System.Drawing.Image.FromFile(System.Web.HttpContext.Current.Server.MapPath(path + picName));
            if (image.Width < width && image.Height < height)
            {
                return true;
            }
            else
            {
                return false;
            }
        }
        else
        {
            return false;
        }
    }

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