Error Upload file when this web was up host

toanhoi bui

15y3.8k.NET

I write a application to upload file and up to host :
http://www.buiductoan.somee.com/default.aspx
My code:
        if (FileUpload1.PostedFile != null)
        {
            String filename = FileUpload1.PostedFile.FileName;
            FileUpload1.PostedFile.SaveAs("C:\\"+filename);

        }
I run success in local host but I run on http://www.buiductoan.somee.com/default.aspx has error :

Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.

And

Access to the path 'C:\Untitled.png' is denied.

Can you help me,please?

7 Replies

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Dorababu Meka15y ago
Which one works for you
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toanhoi bui15y ago
Thanks you very much .I run successful
0
Dorababu Meka15y ago
If you are doing so use Server.MapPath to save the file initially to your project folder then after all your code ask the user where to save the File using Httpcontext and all

Initially you have to create some folder in your application and save your files to that folder like

string strFilename = Server.MapPath("Sample") + "//" + "ur uploaded filename";

FileUpload1.SaveAs(strFilename);

If you say directly to save it in C what if the user didn't have C directory?
0
toanhoi bui15y ago
But C directory of my computer or Server .somee.com because my code was up to host of somee.com server
0
Dorababu Meka15y ago
Obviously in C directory
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toanhoi bui15y ago
I try to modifier web.config but don't success.Where will does the file save,if I save by code FileUpload1.PostedFile.SaveAs("C:\\"+filename) ?
0
Dorababu Meka15y ago
I don't know whether this work or not try it in your web.config

<pages enableEventValidation="false" viewStateEncryptionMode ="Never" />
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