Generic error in GDI+

microsoft.public.dotnet.framework.adonet

1 Apr 2005 7:13 PM

HarlanM

I'm loading thousands of images into a SQL Server 2000 database. I have a
..NET windows application that I'm working on written in C# that retrieves the
fileinfo of the directory and then loads all of the images into an image
field in the database. The problem I'm having is that I get an unhandled
exception after loading about 900 images that says "A generic error occured
in GDI+". I've determined that it has something to do with loading the
images. If I do everything but actually retrieve and load the images it runs
fine.
Here is the code that retrieves and loads the images to the database:

string strSQL = @"INSERT INTO page(page_image) VALUES (@page_image)";
SqlCommand sqlCommand_page = new SqlCommand(strSQL, sqlConnection_DocImage);
SqlParameterCollection pc_page = sqlCommand_page.Parameters;
pc_page.Add(new System.Data.SqlClient.SqlParameter("@page_image",
System.Data.SqlDbType.VarBinary, 2147483647, "page_image"));

Image img;

sqlConnection_DocImage.Open();

foreach(FileInfo row in jpgFileInfo)
{
    using(MemoryStream imageMS = new MemoryStream())
    {
        img = Image.FromFile(row["fullname"].ToString());
        img.Save(imageMS, ImageFormat.Jpeg);
        pc_page["@page_image"].Value = imageMS.ToArray();
    }
    sqlCommand_page.ExecuteNonQuery();
}

sqlConnection_DocImage.Close();

The error message gives me no clue to diagnose what's happening. It sounds
like a resource isn't being disposed of.

Thanks in advance for any help.

HArlan Marshall

4 Apr 2005 1:00 AM

Robbe Morris [C# MVP]

Why are you loading them as images first? I would think you'd
load the binary file as is with the BinaryReader and save the byte
array and not bother with GDI+ at all until you get ready
to render the image.

--
2005 Microsoft MVP C#
Robbe Morris
http://www.robbemorris.com
http://www.masterado.net/home/listings.aspx

Show quote

"HarlanM" <Harl***@discussions.microsoft.com> wrote in message
news:D19D45AA-6B9A-4FBB-9765-6AA907AF7C7D@microsoft.com...
> I'm loading thousands of images into a SQL Server 2000 database. I have a
> .NET windows application that I'm working on written in C# that retrieves
> the
> fileinfo of the directory and then loads all of the images into an image
> field in the database. The problem I'm having is that I get an unhandled
> exception after loading about 900 images that says "A generic error
> occured
> in GDI+". I've determined that it has something to do with loading the
> images. If I do everything but actually retrieve and load the images it
> runs
> fine.
> Here is the code that retrieves and loads the images to the database:
>
> string strSQL = @"INSERT INTO page(page_image) VALUES (@page_image)";
> SqlCommand sqlCommand_page = new SqlCommand(strSQL,
> sqlConnection_DocImage);
> SqlParameterCollection pc_page = sqlCommand_page.Parameters;
> pc_page.Add(new System.Data.SqlClient.SqlParameter("@page_image",
> System.Data.SqlDbType.VarBinary, 2147483647, "page_image"));
>
> Image img;
>
> sqlConnection_DocImage.Open();
>
> foreach(FileInfo row in jpgFileInfo)
> {
> using(MemoryStream imageMS = new MemoryStream())
> {
> img = Image.FromFile(row["fullname"].ToString());
> img.Save(imageMS, ImageFormat.Jpeg);
> pc_page["@page_image"].Value = imageMS.ToArray();
> }
> sqlCommand_page.ExecuteNonQuery();
> }
>
> sqlConnection_DocImage.Close();
>
> The error message gives me no clue to diagnose what's happening. It sounds
> like a resource isn't being disposed of.
>
> Thanks in advance for any help.
>
> HArlan Marshall

4 Apr 2005 6:11 PM

HarlanM

Good point. I didn't know I could do it that way. The only example I could
find for writing images to a binary data field was done through an image. I
will look into the BinaryReader. I do load them as images for display as a
function of another part of the application, but maybe I don't need to go
through an image in the save process.

Thanks very much for pointing me the right way.

Harlan Marshall

Show quote

"Robbe Morris [C# MVP]" wrote:

> Why are you loading them as images first? I would think you'd
> load the binary file as is with the BinaryReader and save the byte
> array and not bother with GDI+ at all until you get ready
> to render the image.
>
> --
> 2005 Microsoft MVP C#
> Robbe Morris
> http://www.robbemorris.com
> http://www.masterado.net/home/listings.aspx
>
>
>
> "HarlanM" <Harl***@discussions.microsoft.com> wrote in message
> news:D19D45AA-6B9A-4FBB-9765-6AA907AF7C7D@microsoft.com...
> > I'm loading thousands of images into a SQL Server 2000 database. I have a
> > .NET windows application that I'm working on written in C# that retrieves
> > the
> > fileinfo of the directory and then loads all of the images into an image
> > field in the database. The problem I'm having is that I get an unhandled
> > exception after loading about 900 images that says "A generic error
> > occured
> > in GDI+". I've determined that it has something to do with loading the
> > images. If I do everything but actually retrieve and load the images it
> > runs
> > fine.
> > Here is the code that retrieves and loads the images to the database:
> >
> > string strSQL = @"INSERT INTO page(page_image) VALUES (@page_image)";
> > SqlCommand sqlCommand_page = new SqlCommand(strSQL,
> > sqlConnection_DocImage);
> > SqlParameterCollection pc_page = sqlCommand_page.Parameters;
> > pc_page.Add(new System.Data.SqlClient.SqlParameter("@page_image",
> > System.Data.SqlDbType.VarBinary, 2147483647, "page_image"));
> >
> > Image img;
> >
> > sqlConnection_DocImage.Open();
> >
> > foreach(FileInfo row in jpgFileInfo)
> > {
> > using(MemoryStream imageMS = new MemoryStream())
> > {
> > img = Image.FromFile(row["fullname"].ToString());
> > img.Save(imageMS, ImageFormat.Jpeg);
> > pc_page["@page_image"].Value = imageMS.ToArray();
> > }
> > sqlCommand_page.ExecuteNonQuery();
> > }
> >
> > sqlConnection_DocImage.Close();
> >
> > The error message gives me no clue to diagnose what's happening. It sounds
> > like a resource isn't being disposed of.
> >
> > Thanks in advance for any help.
> >
> > HArlan Marshall
>
>
>