upload only document files

Question

3.00/5 (1 vote)

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i am trying to upload documents .user can be able to upload theri documents but he/she can be upload images istead of documents and i want to d restrict about this how to apply condition this is my upload code

C#

if (FileUploadControl.PostedFile != null && 
             FileUploadControl.PostedFile.ContentLength 
            > 0)
        {
            if
                (FileUploadControl.FileContent.Length < 100000)
            {
                string filename = 
                Path.GetFileName(FileUploadControl.PostedFile.FileName);
                string folder = Server.MapPath("~/Docfiles/");
                Directory.CreateDirectory(folder);
                FileUploadControl.PostedFile.SaveAs(Path.Combine(folder, filename));
                try
                {
                    cc.upload1(Txt_docde.Value, txt_dname.Value, 
              FileUploadControl.FileName, Convert.ToInt32(Docdrop.SelectedValue),
                       Convert.ToInt32(DropDownList2.SelectedValue), 
              Convert.ToString(Session["Login2"]),Convert.ToInt32(Session["UserID"]));
                    StatusLabel.ForeColor = System.Drawing.Color.Green;
                    //StatusLabel.ForeColor = System.Drawing.FontStyle.Bold;
                    StatusLabel.Text = "Success";
                }
                catch
                {
                    StatusLabel.ForeColor = System.Drawing.Color.Red;
                    Label2.Text = "Failed";


                }
            }
                else
            {
                 StatusLabel.ForeColor = System.Drawing.Color.Red;
                            Label2.Text = "File Size to big";
            }
        }

Posted 13-Nov-13 7:01am

Diya Ayesa

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Comments

Sergey Alexandrovich Kryukov 13-Nov-13 13:05pm

Look at the tags: C and ASP.NET. You certainly mixed something up. :-)
—SA

3 solutions

Solution 1

You can just add an if statement that checks the file extension. I have done something like this in the past:

if (filename.EndsWith(".doc"))
{
     //do stuff
}

Or,

if (FileUploadControl.FileName.EndsWith(".doc"))
{
     //do stuff
}

Posted 13-Nov-13 7:08am

Richard C Bishop

Updated 13-Nov-13 9:32am

v4

Solution 2

Yes..
Add if else statement on your validation action.

string typedoc = fileupload1.PostedFile.FileName.Split('.').Last();
if(typedoc == "doc" || typedoc == "docx")
{
    //save
}
else
{
    //alert error with massage box or label
}

Posted 13-Nov-13 9:23am

ardiantoreza

Updated 13-Nov-13 9:34am

v3

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vinay.Singh · Accepted Answer · 2013-11-13T16:47:00

hi either you for the solution suggested above or you can use the below regular expression for validation

XML

<asp:RegularExpressionValidator ID="uplValidator" runat="server" ControlToValidate="FileUpload1"
 ErrorMessage=".doc, .docx formats are allowed"
 ValidationExpression="(.+\.([d][o][c])|.+\.([d][o][c][x]))"></asp:RegularExpressionValidator>