上传图片

 vs2003 图片上传，保存入数据库。添加与修改功能

如果存放图片文件夹不存在则创建，修改上传另一张图片同时将以前图片删除

private void btnSub_Click(object sender, System.EventArgs e)
        {
            if(txtComName.Text=="")
            {
                Utils.MessageBox("请输入公司名称！",this);
                return;
            }
            string address = txtAddr.Text;
            string tel = txtTel.Text;
            string comName = txtComName.Text;
            string introduct = txtIntroduct.Text;
            string website = txtWebSite.Text;
            string logo = "";
            #region 图片上传
            if(File1.PostedFile.FileName!=string.Empty)
            {
                string fileFullName = File1.PostedFile.FileName;
                string strEx = fileFullName.Substring(fileFullName.LastIndexOf(".")+1).ToLower();
                if(strEx=="jpg"||strEx=="gif"||strEx=="bmp"||strEx=="jpeg")
                {
                    string datetime = DateTime.Now.ToString("yyyyMMddhhmmss");
                    string fileName = string.Format("../upLoad/CompanyImages/{0}.{1}",datetime,strEx);
                    
                    //保存之前 1 判断有没有文件夹
                    string dir = Server.MapPath(fileName.Substring(0,fileName.LastIndexOf("/")));
                    if(!System.IO.Directory.Exists(dir))
                    {
                        System.IO.Directory.CreateDirectory(dir);
                    }
                    // 2 删除以前的旧文件
                    if(txtLogo.Text!="" && System.IO.File.Exists(txtLogo.Text))
                    {
                        System.IO.File.Delete(Server.MapPath(txtLogo.Text));
                    }
                    
                    //保存代码
                    File1.PostedFile.SaveAs(Server.MapPath(fileName));
                    logo = fileName;//存放在数据库里的路径
                }
                else
                {
                    Utils.MessageBox("图片类型不符！",this);
                    return;
                }
            }
            #endregion
            Company com = new Company();
            com.Addreaa = address;
            com.CompanyName = comName;
            com.Tel = tel;
            com.Introduct = introduct;
            com.Logo = logo;
            com.Website = website;

            int id = Utils.GetQueryInt("id");
            if(id>0)//编辑
            {
                com.Company_ID = id;
                if(File1.PostedFile.FileName==string.Empty)
                {
                    logo = txtLogo.Text;
                }
                if(com.Update())                
                {
                    Utils.MessageBoxUrl("修改成功！并返回","CompanyList.aspx");
                    txtAddr.Text = "";
                    txtComName.Text = "";
                    txtIntroduct.Text = "";
                    txtLogo.Text = "";
                    txtWebSite.Text="";
                    txtTel.Text="";
                }
                else
                {
                    Utils.MessageBox("修改失败！");
                }
            }
            else
            {
                com.Add();
                if(com.Company_ID>0)
                {
                    Utils.MessageBox("添加成功！并返回","CompanyList.aspx");
                    txtAddr.Text = "";
                    txtComName.Text = "";
                    txtIntroduct.Text = "";
                    txtLogo.Text = "";
                    txtWebSite.Text="";
                    txtTel.Text="";
                }
                else
                {
                    Utils.MessageBox("添加失败！");
                }
            }

        }

 

vs2003 图片上传 没有存数据库

private void Button1_Click(object sender, System.EventArgs e)
        {
            if(File1.PostedFile.FileName!=string.Empty)
            {
                //定义一个变量，取全部文件名
                string fileFullName = this.File1.PostedFile.FileName;                
                //取文件扩展名
                string strEx = fileFullName.Substring(fileFullName.LastIndexOf(".")+1).ToLower();
                //类型控制，想上传什么类型，可以在这里类似添加
                if(strEx=="jpg"||strEx=="gif"||strEx=="bmp"||strEx=="jpeg")
                {
                    //取得文件名
                    int a = fileFullName.LastIndexOf(".")-fileFullName.LastIndexOf("\\")-1;
                    int b = fileFullName.LastIndexOf("\\")+1;
                    string fileName = fileFullName.Substring(b,a);
                
                    string dataName = DateTime.Now.ToString("yyyyMMddhhmmss");
                    string sFileName = string.Format("~/BankImage/{0}.{1}",fileName+dataName,strEx);
                    File1.PostedFile.SaveAs(Server.MapPath(sFileName));                
            
                    this.Label1.Text = "图片上传成功！";
                }
                else
                {
                    this.Label1.Text = "图片类型不符！";
                }
            }
            
            
        }

 

vs2005 图片上传并存储在数据库中

 //图书图片
        if(FileULPicture.HasFile)
        {
            string fileName = FileULPicture.FileName;
            string strExPrentFile = fileName.Substring(fileName.LastIndexOf(".")+1).ToLower();
            if(strExPrentFile=="jpg"||strExPrentFile=="gif"||strExPrentFile =="bmp"||strExPrentFile == "jpeg")
            {
                string nowTime = DateTime.Now.ToString("yyyyMMddHHmmssmm");
                string sFilePath = string.Format("http://www.cnblogs.com/Web/images/book/{0}.{1}",nowTime,strExPrentFile);//保持路径
                string webFilePath = Server.MapPath(sFilePath);
                FileULPicture.SaveAs(webFilePath);
                pic = "web/images/book/"+nowTime+"."+strExPrentFile;//存在数据库里的路径                
            }
        }
        book.Book_Picture = pic;