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

Code
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

Code
 //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;