Problem with FileUploader Control with some browsers versions

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.NET3.5

I have just used file uploader control to upload file in my application.. it is simple work as i know....but it not working with some browser versions..

It is very serious looks..because it gives error file is not in .pdf format.. because i have checked files only PDF at c# code end..

Plz help me out...i would like to know whether it is problem at browser due to any add-ons or some thing else in operating system is causing this problem....

Posted 7-Aug-14 1:26am

Gaurav Gupta A Tech Guy

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Karthik Harve 7-Aug-14 7:29am

Can you show us your code (html & C# code) ?

Gaurav Gupta A Tech Guy 7-Aug-14 7:40am

<br />
<asp:FileUpload ID="fileupMember" runat="server" />
<br />
<br />
<asp:ImageButton ID="upload" OnClick="upload_Click" runat="server" ImageUrl="~/images/save.png"
Height="20" Width="50" OnClientClick="javascript:fillImageUrl()" />

string fFullName = fileupMember.PostedFile.FileName;
int len = fFullName.Length;
string ext = Path.GetExtension(fFullName);
string str = fFullName.Substring(fFullName.LastIndexOf("\\") + 1);
len = str.Length;
string fileN = str.Substring(0, len - ext.Length);

Regex FilenameRegex = null;
FilenameRegex = new Regex("(.*?)\\.(htm|html|asp|aspx|php|jsp|pdf|doc|docx|xls|xlsx|ppt|pptx|HTM|HTML|ASP|ASPX|PHP|JSP|PDF|DOC|DOCX|XLX|XLSX|PPT|PPTX)$", RegexOptions.IgnoreCase);
int index = fileN.IndexOf(".");

if (!FilenameRegex.IsMatch(fFullName) || index != -1)
{
return "";
}

string Photoname = Path.GetFileNameWithoutExtension(fileupMember.PostedFile.FileName);
string fileSize = fileupMember.PostedFile.ContentLength.ToString();
String ImageFileNameMBA = fileupMember.PostedFile.FileName;
HttpPostedFile ImageFileMBA = fileupMember.PostedFile;
Byte[] stu_imageMBA = new Byte[ImageFileMBA.ContentLength];

Stream fs = fileupMember.PostedFile.InputStream;
fs.Read(stu_imageMBA, 0, Convert.ToInt32(fileSize));

fs.Seek(0, SeekOrigin.Begin);
StreamReader sr = new StreamReader(fs, true);

string firstLine = sr.ReadLine().ToString();

//string firstLine = "JFIF";

if ((firstLine.IndexOf("%PDF") > -1))
{
return;
}

String[] allowedExtensions = { ".pdf" };
String[] allowedMimeType = { "application/pdf" };

for (int i = 0; i < allowedExtensions.Length; i++)
{
if (FileExtension == allowedExtensions[i])
{
FileOK = true;
}
}

if (FileOK == true)
{
for (int i = 0; i < allowedMimeType.Length; i++)
{
if (fileupMember.PostedFile.ContentType == allowedMimeType[i])
{
FileOK1 = true;
}
}
}

if (FileOK == true)
{
fileupMember.PostedFile.SaveAs(Server.MapPath("./filelocation"));
}

Manoj B. Kalla 9-Aug-14 2:23am

Dear Gaurav,

According to user agent we have to change code or wirte different style of html code.
Thank You.

Gaurav Gupta A Tech Guy 11-Aug-14 6:21am

Kindly please tell me... how ?

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Vinay Mistry · Answer 1 · 2014-08-15T22:53:00

Solution 1

In code file you can use condition as following:

C#

if (FileUpload1.PostedFile.ContentType.ToLower() == "application/pdf")
{
  //Your code
}
else
{
  //Display message that pdf file not selected.
}

Posted 15-Aug-14 22:53pm

Vinay Mistry