I pass an array to a method and I use a foreach loop. The parameter I'm passing to new Bitmap() is not valid for some reason. I get the error "Parameter is not valid." The parameter is a string path (as it should be).
Can anyone tell me what's wrong?
If I highlight the parameter name, this is what it shows me, which seems to be correct:
"C:\Reinstatement Image Transporter\Image Processing\NYH004402800_REINSTMT_0e2837ae.jpg"
public static void CompressPictures(string[] processingFiles)
{
string originalFileName = "";
foreach (string file in processingFiles)
{
//I'm getting the error right here:
Bitmap pic = new Bitmap(file);
ImageCodecInfo jgpEncoder = GetEncoder(ImageFormat.Jpeg);
Encoder myEncoder = Encoder.Quality;
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 50L);
myEncoderParameter = new EncoderParameter(myEncoder, 0L);
myEncoderParameters.Param[0] = myEncoderParameter;
originalFileName = Path.GetFileNameWithoutExtension(file.Remove(file.Length - 1, 1));
pic.Save(AppVars.ProcessingPolicyImagesFolder + originalFileName, jgpEncoder, myEncoderParameters);
}
}
(Per the comments on the question above: It was a simple FileNotFound error.)
Related
Hi I have this error when a try to upload a picture downloaded via email from an Ipad Air Camera(JPG)
A Generic error occurred in GDI+
Here is the code, anyone can helps me? All the pictures are saving good except from this Ipad Air.
var pic = System.Web.HttpContext.Current.Request.Files[0];// canvi per Vendor/fileuploadmaster
Bitmap bmp = new Bitmap(pic.InputStream);
DateTime dtaken;
PropertyItem propItem;
try {
propItem = bmp.GetPropertyItem(36867);
string sdate = System.Text.Encoding.UTF8.GetString(propItem.Value).Trim();
string secondhalf = sdate.Substring(sdate.IndexOf(" "), (sdate.Length - sdate.IndexOf(" ")));
string firsthalf = sdate.Substring(0, 10);
firsthalf = firsthalf.Replace(":", "-");
sdate = firsthalf + secondhalf;
dtaken = DateTime.Parse(sdate);
}
catch {
dtaken = DateTime.Now;
}
//Fecha de última modificacion
//PropertyItem propItem = bmp.GetPropertyItem(306);
var newFilePath = ConfigurationManager.AppSettings["PathTmpPhotos"].ToString();
var FechaString = dtaken.ToString("yyMMddHHmmss");
var newFileName = DateTime.Now.ToString("yyyyMMddHHmmss") + "_" + visitBrandId.ToString("D10") + "_" + FechaString + "_" + pic.FileName;
var tmpFilePath = newFilePath + newFileName;
pic.SaveAs(tmpFilePath);
var img = FileUtilities.ResizePhoto(newFilePath, newFileName, 800, 600);
ImageCodecInfo jpgEncoder = GetEncoder(ImageFormat.Jpeg);
// Create an Encoder object based on the GUID
// for the Quality parameter category.
Encoder myEncoder = Encoder.Quality;
// Create an EncoderParameters object.
// An EncoderParameters object has an array of EncoderParameter
// objects. In this case, there is only one
// EncoderParameter object in the array.
EncoderParameters myEncoderParameters = new EncoderParameters(1);
// 0L = NO Quality // 100L = High Quality
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 100L);
myEncoderParameters.Param[0] = myEncoderParameter;
img.Save(Path.Combine(newFilePath, newFileName), jpgEncoder, myEncoderParameters);
//img.Save(Path.Combine(newFilePath, newFileName));
The solution was in the ResizePhoto.
When the picture was taken with the mobile, is under 800x600 size, so this function cant resize the picture to a bigger size.
So, the solution was this:
var img = FileUtilities.ResizePhoto(newFilePath, newFileName, 300, 200);
Because dont exist any picture taken with the mobile smaller than 300x200
Regards
I want to display an Image on a C# winForms application, but only with the quality of 50%, is it possible with the standard Picturebox?
Maybe resize the image programmatically to 50% of the size and then stretch it to the Picturebox?
Image img = Image.FromFile(imgFile)
** Resize the Image here, or do something else **
pictureBox.Image = img;
pictureBox.SizeMode = PictureBoxSizeMode.StretchImage;
You can change the quality of Picture by following function,
private void VaryQualityLevel()
{
// Get a bitmap.
Bitmap bmp1 = new Bitmap(#"c:\TestPhoto.jpg");
ImageCodecInfo jgpEncoder = GetEncoder(ImageFormat.Jpeg);
// Create an Encoder object based on the GUID
// for the Quality parameter category.
System.Drawing.Imaging.Encoder myEncoder =
System.Drawing.Imaging.Encoder.Quality;
// Create an EncoderParameters object.
// An EncoderParameters object has an array of EncoderParameter
// objects. In this case, there is only one
// EncoderParameter object in the array.
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder,
50L);
myEncoderParameters.Param[0] = myEncoderParameter;
bmp1.Save(#"c:\TestPhotoQualityFifty.jpg", jgpEncoder,
myEncoderParameters);
myEncoderParameter = new EncoderParameter(myEncoder, 100L);
myEncoderParameters.Param[0] = myEncoderParameter;
bmp1.Save(#"c:\TestPhotoQualityHundred.jpg", jgpEncoder,
myEncoderParameters);
// Save the bitmap as a JPG file with zero quality level compression.
myEncoderParameter = new EncoderParameter(myEncoder, 0L);
myEncoderParameters.Param[0] = myEncoderParameter;
bmp1.Save(#"c:\TestPhotoQualityZero.jpg", jgpEncoder,
myEncoderParameters);
}
after assign 50% Quality Image on picture box,
pictureBox.Image = "c:\TestPhotoQualityFifty.jpg";
verify this stackoverflow.com/questions/1484759/quality-of-a-saved-jpg-in-c-sharp
I suggest you to first read this -
How to: Set JPEG Compression Level
Turning off JPEG color downsampling for Bitmap.Save()
You can save it to MemoryStream and then load a new bitmap from this
MemoryStream.
Try this approach:
// Get a bitmap.
Bitmap bmp1 = new Bitmap(#"c:\TestPhoto.jpg");
ImageCodecInfo jpgEncoder = GetEncoder(ImageFormat.Jpeg);
// Create an Encoder object based on the GUID
// for the Quality parameter category.
System.Drawing.Imaging.Encoder myEncoder =
System.Drawing.Imaging.Encoder.Quality;
// Create an EncoderParameters object.
// An EncoderParameters object has an array of EncoderParameter
// objects. In this case, there is only one
// EncoderParameter object in the array.
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 50L);
myEncoderParameters.Param[0] = myEncoderParameter;
MemoryStream ms = new MemoryStream();
bmp1.Save(ms, jpgEncoder, myEncoderParameters);
pictureBox.Image = Image.FromStream(ms);
.....
private ImageCodecInfo GetEncoder(ImageFormat format)
{
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageDecoders();
foreach (ImageCodecInfo codec in codecs)
{
if (codec.FormatID == format.Guid)
{
return codec;
}
}
return null;
}
I'm trying to scale an image and save that image to a new location. Now i'm having this error "A generic error occurred in GDI+ at System.Drawing.Image.Save".
I've found a couple of answers on stackoverflow, unfortunately without any results.
public static void SaveImageScaled(String imagePath, string destPath, Size newSize, String filename)
{
using (Bitmap bmpOriginal = (Bitmap)Image.FromFile(imagePath))
using (Bitmap bmpResized = new Bitmap(newSize.Width, newSize.Height))
using (Graphics g = Graphics.FromImage(bmpResized))
{
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.DrawImage(
bmpOriginal,
new Rectangle(Point.Empty, bmpResized.Size),
new Rectangle(Point.Empty, bmpOriginal.Size),
GraphicsUnit.Pixel);
// Lower the quality;
long qualityPercentage = 75L;
ImageCodecInfo[] myImageCodecInfoList = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo myImageCodecInfo = myImageCodecInfoList.Where(x => x.FormatID == bmpOriginal.RawFormat.Guid).First();
Encoder myEncoder = Encoder.Quality;
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, qualityPercentage);
myEncoderParameters.Param[0] = myEncoderParameter;
if (!Directory.Exists(destPath))
Directory.CreateDirectory(destPath);
// ERROR
bmpResized.Save(destPath + filename, myImageCodecInfo, myEncoderParameters);
}
}
This code created a directory with insufficient write-acces. Changed the permissions on a higher directory level, and solved the issue.
if (!Directory.Exists(destPath))
Directory.CreateDirectory(destPath);
I have this code that saves an image to disk
public static void SaveImage(Bitmap picture, string path)
{
// Comprimir
ImageCodecInfo encoder = GetJPGEncoder();
// Create an Encoder object based on the GUID
// for the Quality parameter category.
System.Drawing.Imaging.Encoder myEncoder =
System.Drawing.Imaging.Encoder.Quality;
// Create an EncoderParameters object.
// An EncoderParameters object has an array of EncoderParameter
// objects. In this case, there is only one
// EncoderParameter object in the array.
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 50L);
myEncoderParameters.Param[0] = myEncoderParameter;
//picture.
picture.Save(path, encoder, myEncoderParameters);
}
but now I need to get the result as a byte[]. I can't find a way to get the result in memory so that I can convert it to byte[]. I thought about loading the file after saving it in the harddrive, but that would be completely unnecessary. Does anyone know if I can achieve this?
Use this:
using(var stream = new MemoryStream())
{
picture.Save(stream, encoder, myEncoderParameters);
return stream.ToArray();
}
Use a MemoryStream. One of the overloads of the Save() method takes a Stream.
I need to get a picture from the user, with different format extensions, and I want to always save it as "jpg", for easy handling.
is there a good way do that in c# without arming the quality?
From: http://msdn.microsoft.com/en-us/library/system.drawing.imaging.encoderparameter.aspx
private void VaryQualityLevel()
{
// Get a bitmap.
Bitmap bmp1 = new Bitmap(#"c:\TestPhoto.jpg");
ImageCodecInfo jpgEncoder = GetEncoder(ImageFormat.Jpeg);
// Create an Encoder object based on the GUID
// for the Quality parameter category.
System.Drawing.Imaging.Encoder myEncoder =
System.Drawing.Imaging.Encoder.Quality;
// Create an EncoderParameters object.
// An EncoderParameters object has an array of EncoderParameter
// objects. In this case, there is only one
// EncoderParameter object in the array.
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder,
50L);
myEncoderParameters.Param[0] = myEncoderParameter;
bmp1.Save(#"c:\TestPhotoQualityFifty.jpg", jpgEncoder,
myEncoderParameters);
myEncoderParameter = new EncoderParameter(myEncoder, 100L);
myEncoderParameters.Param[0] = myEncoderParameter;
bmp1.Save(#"c:\TestPhotoQualityHundred.jpg", jpgEncoder,
myEncoderParameters);
// Save the bitmap as a JPG file with zero quality level compression.
myEncoderParameter = new EncoderParameter(myEncoder, 0L);
myEncoderParameters.Param[0] = myEncoderParameter;
bmp1.Save(#"c:\TestPhotoQualityZero.jpg", jpgEncoder,
myEncoderParameters);
}
...
private ImageCodecInfo GetEncoder(ImageFormat format)
{
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageDecoders();
foreach (ImageCodecInfo codec in codecs)
{
if (codec.FormatID == format.Guid)
{
return codec;
}
}
return null;
}
I use this simple extension to convert a stream, all it does is convert it though and does nothing for quality.
public static Stream ConvertImage(this Stream originalStream, ImageFormat format)
{
var image = Image.FromStream(originalStream);
var stream = new MemoryStream();
image.Save(stream, format);
stream.Position = 0;
return stream;
}
usage:
var outputStream = gifStream.ConvertImage(ImageFormat.Png);
Windows GDI+ provides the Image class and the Bitmap class for storing
images in memory and manipulating images in memory. GDI+ writes images
to disk files with the help of image encoders and loads images from
disk files with the help of image decoders.
Check Image.Save Method overloads to implement your functionality. which support various image format of type ImageFormat Class.
follow example on Image.Save Method (String, ImageCodecInfo, EncoderParameters), which will let you save Jpg file with encoding etc.
code snippet:
using System;
using System.Drawing;
using System.Drawing.Imaging;
class Example_SetJPEGQuality
{
public static void Main()
{
Bitmap myBitmap;
ImageCodecInfo myImageCodecInfo;
Encoder myEncoder;
EncoderParameter myEncoderParameter;
EncoderParameters myEncoderParameters;
// Create a Bitmap object based on a BMP file.
myBitmap = new Bitmap("Shapes.bmp");
// Get an ImageCodecInfo object that represents the JPEG codec.
myImageCodecInfo = GetEncoderInfo("image/jpeg");
// Create an Encoder object based on the GUID
// for the Quality parameter category.
myEncoder = Encoder.Quality;
// Create an EncoderParameters object.
// An EncoderParameters object has an array of EncoderParameter
// objects. In this case, there is only one
// EncoderParameter object in the array.
myEncoderParameters = new EncoderParameters(1);
// Save the bitmap as a JPEG file with quality level 25.
myEncoderParameter = new EncoderParameter(myEncoder, 25L);
myEncoderParameters.Param[0] = myEncoderParameter;
myBitmap.Save("Shapes025.jpg", myImageCodecInfo, myEncoderParameters);
// Save the bitmap as a JPEG file with quality level 50.
myEncoderParameter = new EncoderParameter(myEncoder, 50L);
myEncoderParameters.Param[0] = myEncoderParameter;
myBitmap.Save("Shapes050.jpg", myImageCodecInfo, myEncoderParameters);
// Save the bitmap as a JPEG file with quality level 75.
myEncoderParameter = new EncoderParameter(myEncoder, 75L);
myEncoderParameters.Param[0] = myEncoderParameter;
myBitmap.Save("Shapes075.jpg", myImageCodecInfo, myEncoderParameters);
}
// Codec info
private static ImageCodecInfo GetEncoderInfo(String mimeType)
{
int j;
ImageCodecInfo[] encoders;
encoders = ImageCodecInfo.GetImageEncoders();
for(j = 0; j < encoders.Length; ++j)
{
if(encoders[j].MimeType == mimeType)
return encoders[j];
}
return null;
}
}
Hope this help..
Try this:
public static class BitmapExtension
{
public static void Save(this Bitmap bitmap, String fileName, ImageFormat imageFormat, long quality = 75L)
{
using (var encoderParameters = new EncoderParameters(1))
using (encoderParameters.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality))
{
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageDecoders();
bitmap.Save(fileName, codecs.Single(codec => codec.FormatID == imageFormat.Guid), encoderParameters);
}
}
}
...
Bitmap bitmap = new Bitmap("myImage.bmp");
bitmap.Save("myImage.jpg", ImageFormat.Jpeg, 50L);