How do I save a file to DB?

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Hey guys, I have this code:

XML

<div>
            <ajaxToolkit:AsyncFileUpload OnClientUploadError="uploadError" OnClientUploadComplete="uploadComplete" runat="server"
                ID="AsyncFileUpload1" UploaderStyle="Traditional" CompleteBackColor="White" UploadingBackColor="#CCFFFF"
                ThrobberID="imgLoader" OnUploadedComplete="FileUploadComplete" />
            <%--<asp:Image ID="imgLoader" runat="server" ImageUrl="~/images/loader.gif" />--%>
            <asp:Label ID="lblMesg" runat="server" Text=""></asp:Label>
            <asp:Button ID="submit" runat="server" Text="SUBMIT REQUEST" OnClick="submit_Click" OnClientClick="submit_Click" />
        </div>

and on the background this:

C#

protected void FileUploadComplete(object sender, EventArgs e)
       {
           string filename = System.IO.Path.GetFileName(AsyncFileUpload1.FileName);
           AsyncFileUpload1.SaveAs(Server.MapPath("Uploads/") + filename);
       }

Supposedly the file will be stuff like images, pictures, documents, etc...
but what I want to know is how I get the file in it's entirety? It's a long form and I already have a connection to a DB working so what I want is to get a variable that has the file saved to it so I can just pass it to the DB

Posted 25-Jan-15 23:57pm

varmartins

Updated 26-Jan-15 0:00am

v2

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2 solutions

Solution 2

Try these links -
Upload and Download Files with SQL Server in ASP.NET[^]
Storing Binary Files Directly in the Database Using ASP.NET 2.0[^]
Save Files to SQL Server Database using FileUpload Control[^]

Posted 26-Jan-15 0:12am

Abhinav S

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Sinisa Hajnal · Accepted Answer · 2015-01-26T00:09:00

Solution 1

file upload control has FileStream or some such property of type stream.

Put it in memoryStream class and convert to bytearray which can then be saved to binary column type.

Found it:

AsyncFileUpload1.PostedFile.InputStream

Here is full code for getting ByteArray:

C#

public static byte[] ReadFile(Stream input)
{
    byte[] buffer = new byte[input.Length];
    using (MemoryStream ms = new MemoryStream())
    {
        int read;
        while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
        {
            ms.Write(buffer, 0, read);
        }
        return ms.ToArray();
    }
}

Posted 26-Jan-15 0:09am

Sinisa Hajnal

Comments

varmartins 26-Jan-15 7:01am

<pre>
protected void FileUploadComplete(object sender, EventArgs e)
{
string filename = System.IO.Path.GetFileName(AsyncFileUpload1.FileName);
AsyncFileUpload1.SaveAs(Server.MapPath("Uploads/") + filename);
byte[] file = new byte[AsyncFileUpload1.PostedFile.InputStream.Length];
file = ReadFile(AsyncFileUpload1.PostedFile.InputStream);
Console.WriteLine(file);

}

public static byte[] ReadFile(Stream input)
{
byte[] buffer = new byte[input.Length];
using (MemoryStream ms = new MemoryStream())
{
int read;
while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
{
ms.Write(buffer, 0, read);
}
return ms.ToArray();
}
}
</pre>
I used this code but I can't use the file variable in the method I want which is in the same page, any idea why is that?

Sinisa Hajnal 26-Jan-15 7:18am

because it is local to FileUploadComplete? You have to save it into the database in the same event - just call the method for that.

If you have some other mechanism then you have to declare byte[] file as the member variable of the class; or put it in a Session.

varmartins 26-Jan-15 7:34am

Thanks m8, you really helped me ;)

varmartins 26-Jan-15 7:43am

Btw you said to save to binary column type? but I'm getting this error "String or binary data would be truncated." and from what I saw this means it's 2 much data for the field but my field already has the maximum size allowd (8000) and it still doesn't fit... should I use a different type of field?

Sinisa Hajnal 26-Jan-15 8:02am

If you have 8000 as size then yes, that is the maximum size. However there is varchar(MAX), varbinary (MAX) which hold 2GB and varbinary(max) FILESTREAM which is limited only to your filesystem max size.

You have to have SQL Server 2008 and above.

varmartins 26-Jan-15 9:31am

Yeah this worked thanks again mate, you're the best ;)

Sinisa Hajnal 26-Jan-15 9:47am

If we ever meet, you owe me a chocolate :)

varmartins 26-Jan-15 9:48am

sure xD