how does follwing code affected ? Somebody tell me !!

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I have created a page for file upload control for converting 'nvarchar(max)' type to 'bytes' !
Its working now !
but I want to know more about this code convertion !

If I want to make conversion varbinary(max) to bytes , what should I do ?

C#

string filename = Path.GetFileName(FileUpload1.PostedFile.FileName);
string ext = Path.GetExtension(filename);
if (ext == ".png" || ext == ".jpg" || ext == ".jpeg" || ext == ".PNG" || ext == ".JPG" || ext == ".JPEG" || ext == ".gif" || ext == ".GIF")
{
    Stream fs = FileUpload1.PostedFile.InputStream;
    BinaryReader br = new BinaryReader(fs);
    Byte[] bytes = br.ReadBytes((Int32)fs.Length);
    string base64String = Convert.ToBase64String(bytes, 0, bytes.Length);
    Label1.Text = "Data stored successfully !!!!!";
}
else
{
    Response.Write("<script>alert('unsupported format of photo file');</script>");
}

Thanks in advance !

Posted 4-Mar-14 1:36am

prakashvidwans

Updated 4-Mar-14 1:41am

Maarten Kools

v2

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[no name] 4-Mar-14 7:54am

Can you make clear that why you want to convert the varbinary(max) to bytes ? Varbinary(max) need to store the data of byte. So, if you want to store the byte in sql server then no need to convert the byte to varbinary. SQL Server can automatically store the byte value in varbinary field. you can get help from this link http://www.c-sharpcorner.com/Forums/Thread/60371/

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Bernhard Hiller · Accepted Answer · 2014-03-04T21:33:00

Solution 1

1. Saving an image's bytes as a Base64 encoding string is a WTF. Database engines offer binary column types. Better use them.
2. To get the bytes from such a "wrongly" stored image, use Convert.FromBase64String(your string).

Posted 4-Mar-14 21:33pm

Bernhard Hiller