// 如果我上传 1.chicken.jpg 180kb 2.chicken.pdf 但 chicken.pdf 跟随插入到数据库，为什么这段代码不起作用
HttpFileCollection hfc = Request.Files;
if (hfc != null)
{
string cekDir = string.Format("{0}\\{1}", ConfigurationManager.AppSettings["docLoc"], id_hazard_report);
string PicDir;
if (Directory.Exists(cekDir)) //check Folder avlalible or not
{
PicDir = cekDir;
}
else
{
DirectoryInfo di = Directory.CreateDirectory(cekDir); // create Folder
PicDir = cekDir;
}
string fullname;
string filename;
FileUpload FileUpload1 = (FileUpload)FormView1.FindControl("FileUpload1");
string fileExt = Path.GetExtension(FileUpload1.FileName); //Get The File Extension
for (int i = 0; i < hfc.Count; i++)
{
HttpPostedFile hpf = hfc[i];
if (hpf.ContentLength >0)
{
///full path name to check exist or not
fullname = string.Format("{0}\\{1}", PicDir, Path.GetFileName(hpf.FileName.Replace(" ", "_")));
bool ex = File.Exists(fullname);
if (hpf == (".jpg") || fileExt == (".gif") || fileExt == (".bmp") || fileExt == (".png") || fileExt == (".jpeg"))
{
if(FileUpload1.FileBytes.Length > 200000)
{
ClientScript.RegisterStartupScript(Type.GetType("System.String"), "messagebox", "<script type=\"text/javascript\">alert('File Tidak boleh lebih dari 200 kb');</script>");
break;
}
if (ex == true)
{
string f = Path.GetFileName(hpf.FileName.Replace(" ", "_"));
string[] a = new string[1];
a = f.Split('.');
filename = string.Format("{0}_{1}.{2}", a.GetValue(0), DateTime.Now.ToString("yymdHm"), a.GetValue(1));
}
else
{
filename = Path.GetFileName(hpf.FileName.Replace(" ", "_")).ToString();
}
///full path name to store in database with new filename
//string[] aa = new string[1];
//filename = string.Format("{0}_{1}.{2}", aa.GetValue(0), DateTime.Now.ToString("yymdHm"), aa.GetValue(1));
fullname = string.Format("{0}\\{1}", PicDir, filename);
hpf.SaveAs(fullname); //save as
InsertHazardDoc(id_hazard_report, filename);
}
else
{
FileUpload1.Focus();
ClientScript.RegisterStartupScript(Type.GetType("System.String"),"messagebox", "<script type=\"text/javascript\">alert('File Bukan Format Gambar');</script>");
break;
}
}
//}
}
}
#endregion
//Page.DataBind();
myfb._success("Hazard Report Succesfully Inserted");
}
catch (Exception ex)
{
myfb._error(ex.ToString());
}
}
// 如果我上传 1.chicken.jpg 180kb 2.chicken.pdf 但 chicken.pdf 跟随插入到数据库，为什么这段代码不起作用
在这里你定义：
HttpPostedFile hpf = hfc[i];
然后你问：
if (hpf == (".jpg") || fileExt == (".gif") || fileExt == (".bmp") || fileExt == (".png") || fileExt == (".jpeg"))
但是 hpf 是HttpPostedFile而不是string
将您的代码更改为：
if (fileExt == (".jpg") || fileExt == (".gif") || fileExt == (".bmp") || fileExt == (".png") || fileExt == (".jpeg"))
此外，您还有一个用于所有上传文件的循环。
在该循环开始之前，您将获得文件扩展名然后执行循环：
for (int i = 0; i < hfc.Count; i++)
您需要检查循环内的文件扩展名：
for (int i = 0; i < hfc.Count; i++)
string fileExt = Path.GetExtension(hpf.FileName); //Get The File
否则，如果您的第一个文件具有允许的文件扩展名，则上传中的所有文件都将被保存。
如果文件名中.有一个文件名，.例如FileName.Something.jgp. 而是使用Path.GetFileNameWithoutExtension
如果在同一秒上传了多个同名文件，您为文件赋予唯一名称的时间戳也会导致问题。我总是看到这个问题。您可能想要包括毫秒。
如果你想跳过无效文件使用continue而不是break：
HttpFileCollection hfc = Request.Files;
if (hfc != null)
{
string cekDir = string.Format("{0}\\{1}", ConfigurationManager.AppSettings["docLoc"], id_hazard_report);
string PicDir;
if (Directory.Exists(cekDir)) //check Folder avlalible or not
{
PicDir = cekDir;
}
else
{
DirectoryInfo di = Directory.CreateDirectory(cekDir); // create Folder
PicDir = cekDir;
}
string fullname;
string filename;
//FileUpload FileUpload1 = (FileUpload)FormView1.FindControl("FileUpload1");
for (int i = 0; i < hfc.Count; i++)
{
HttpPostedFile hpf = hfc[i];
if (hpf.ContentLength > 0)
{
///full path name to check exist or not
fullname = string.Format("{0}\\{1}", PicDir, Path.GetFileName(hpf.FileName.Replace(" ", "_")));
// get the file name here.
string fileExt = Path.GetExtension(FileUpload1.FileName); //Get The File Extension
if (FileExt == (".jpg") || fileExt == (".gif") || fileExt == (".bmp") || fileExt == (".png") || fileExt == (".jpeg"))
{
if (hpf.ContentLength.Length > 200000)
{
ClientScript.RegisterStartupScript(Type.GetType("System.String"), "messagebox", "<script type=\"text/javascript\">alert('File Tidak boleh lebih dari 200 kb');</script>");
continue; // break will exit the loop, use continue to go to the next file
}
if (File.Exists(fullname))
{
string f = Path.GetFileNameWithoutExtension(hpf.FileName.Replace(" ", "_"));
string timeStamp = DateTime.Now.ToString("yymdHm"); // this could fail, be more specific with your timestamp;
filename = f + timeStamp + fileExt;
// this will not work correctly if more than one "." in the file name
//string[] a = new string[1];
//a = f.Split('.');
//filename = string.Format("{0}_{1}.{2}", a.GetValue(0), DateTime.Now.ToString("yymdHm"), a.GetValue(1));
}
else
{
filename = Path.GetFileName(hpf.FileName.Replace(" ", "_")).ToString();
}
///full path name to store in database with new filename
//string[] aa = new string[1];
//filename = string.Format("{0}_{1}.{2}", aa.GetValue(0), DateTime.Now.ToString("yymdHm"), aa.GetValue(1));
fullname = string.Format("{0}\\{1}", PicDir, filename);
hpf.SaveAs(fullname); //save as
InsertHazardDoc(id_hazard_report, filename);
}
else
{
FileUpload1.Focus();
ClientScript.RegisterStartupScript(Type.GetType("System.String"), "messagebox", "<script type=\"text/javascript\">alert('File Bukan Format Gambar');</script>");
continue;// break will exit the loop, use continue to go to the next file
}
}
//}
}
}
我看你是新来的。花点时间阅读这个stackoverflow.com/help/someone-answers
如果我首先上传 file.pdf 和第二个 file.jpg 。这是我的代码不跳过 file.jpg 插入数据库。但如果我首先上传 file.jpg 和第二个 file.pdf 完成。可以帮我？
break is causing you to exit the loop. I updated and added more comments of other issues
ok done. one question again . why file size function 200 kb not function? if (FileUpload1.FileBytes.Length > 200000) or if(hpf.ContentLength > 200000)// 200 kb
Get rid of FileUpload1. You need to check hpf which is the current file in the loop. See update
