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Well-known member
Hi everyone, I am new here, hopefully someone can help.
I am just making a small program for myself with C# Express and I am getting some odd Exceptions with the System.Drawing.Image.FromFile() Method.
This program is meant to watch a folder for new files, the convert tiff files to jpeg files (My scanner only scans into tiff).
This program always works for the first file added to c:temp, but fails and throws an OutOfMemory exception the second or third time.
Any info would be greatly appreciated.
Thanks
Here is the source
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Xml;
namespace ConsoleApplication1
{
class Program
{
public static System.Drawing.Image image1;
public static void Main()
{
Console.WriteLine(" BBC Image Conversion Program");
Console.WriteLine("To Quit, Type q then press enter");
Console.WriteLine("--------------------------------");
string ext = "tif";
string folder = "c:\temp";
// Create a new FileSystemWatcher and set its properties.
FileSystemWatcher watcher = new FileSystemWatcher();
watcher.Path = folder;
/* Watch for changes in LastAccess and LastWrite times, and
the renaming of files or directories. */
watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite
| NotifyFilters.FileName | NotifyFilters.DirectoryName;
// Only watch text files.
watcher.Filter = ext;
// Add event handlers.
watcher.Created += new FileSystemEventHandler(OnChanged);
// Begin watching.
watcher.EnableRaisingEvents = true;
// Wait for the user to quit the program.
while (Console.Read() != q) ;
}
// Define the event handlers.
private static void OnChanged(object source, FileSystemEventArgs ep)
{
// Specify what is done when a file is changed, created, or deleted.
ChangeFile(ep.FullPath);
GC.Collect();
}
private static void ChangeFile(string FileName)
{
// Specify what is done when a file is changed, created, or deleted.
try
{
image1 = System.Drawing.Image.FromFile(FileName, true);
Console.WriteLine("Found File " + FileName);
image1.Save(@FileName + ".jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
Console.WriteLine("Converted to JPG for you");
}
catch (OutOfMemoryException e)
{
Console.WriteLine(e.Message);
}
finally
{
image1 = null;
}
}
}
}
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I am just making a small program for myself with C# Express and I am getting some odd Exceptions with the System.Drawing.Image.FromFile() Method.
This program is meant to watch a folder for new files, the convert tiff files to jpeg files (My scanner only scans into tiff).
This program always works for the first file added to c:temp, but fails and throws an OutOfMemory exception the second or third time.
Any info would be greatly appreciated.
Thanks
Here is the source
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Xml;
namespace ConsoleApplication1
{
class Program
{
public static System.Drawing.Image image1;
public static void Main()
{
Console.WriteLine(" BBC Image Conversion Program");
Console.WriteLine("To Quit, Type q then press enter");
Console.WriteLine("--------------------------------");
string ext = "tif";
string folder = "c:\temp";
// Create a new FileSystemWatcher and set its properties.
FileSystemWatcher watcher = new FileSystemWatcher();
watcher.Path = folder;
/* Watch for changes in LastAccess and LastWrite times, and
the renaming of files or directories. */
watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite
| NotifyFilters.FileName | NotifyFilters.DirectoryName;
// Only watch text files.
watcher.Filter = ext;
// Add event handlers.
watcher.Created += new FileSystemEventHandler(OnChanged);
// Begin watching.
watcher.EnableRaisingEvents = true;
// Wait for the user to quit the program.
while (Console.Read() != q) ;
}
// Define the event handlers.
private static void OnChanged(object source, FileSystemEventArgs ep)
{
// Specify what is done when a file is changed, created, or deleted.
ChangeFile(ep.FullPath);
GC.Collect();
}
private static void ChangeFile(string FileName)
{
// Specify what is done when a file is changed, created, or deleted.
try
{
image1 = System.Drawing.Image.FromFile(FileName, true);
Console.WriteLine("Found File " + FileName);
image1.Save(@FileName + ".jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
Console.WriteLine("Converted to JPG for you");
}
catch (OutOfMemoryException e)
{
Console.WriteLine(e.Message);
}
finally
{
image1 = null;
}
}
}
}
View the full article