public static Image Crop(Image imgPhoto, int Width, int Height, AnchorPosition Anchor)
{
if (imgPhoto == null)
{
return null;
}
int sourceWidth = imgPhoto.Width;
int sourceHeight = imgPhoto.Height;
int sourceX = 0;
int sourceY = 0;
int destX = 0;
int destY = 0;
float nPercent = 0;
float nPercentW = 0;
float nPercentH = 0;
nPercentW = ((float)Width / (float)sourceWidth);
nPercentH = ((float)Height / (float)sourceHeight);
if (nPercentH < nPercentW)
{
nPercent = nPercentW;
switch (Anchor)
{
case AnchorPosition.Top:
destY = 0;
break;
case AnchorPosition.Bottom:
destY = (int)(Height - (sourceHeight * nPercent));
break;
default:
destY = (int)((Height - (sourceHeight * nPercent)) / 2);
break;
}
}
else
{
nPercent = nPercentH;
switch (Anchor)
{
case AnchorPosition.Left:
destX = 0;
break;
case AnchorPosition.Right:
destX = (int)(Width - (sourceWidth * nPercent));
break;
default:
destX = (int)((Width - (sourceWidth * nPercent)) / 2);
break;
}
}
int destWidth = (int)(sourceWidth * nPercent);
int destHeight = (int)(sourceHeight * nPercent);
Bitmap bmPhoto = new Bitmap(Width, Height, PixelFormat.Format24bppRgb);
bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution);
Graphics grPhoto = Graphics.FromImage(bmPhoto);
grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic;
grPhoto.DrawImage(imgPhoto,
new Rectangle(destX, destY, destWidth, destHeight),
new Rectangle(sourceX, sourceY, sourceWidth, sourceHeight),
GraphicsUnit.Pixel);
grPhoto.Dispose();
return bmPhoto;
}
public byte[] ImageToByteArray(string path)
{
FileInfo info = new FileInfo(path);
long sizeByte = info.Length;
FileStream fs = new FileStream(path,FileMode.Open,FileAccess.Read);
BinaryReader br = new BinaryReader(fs);
byte[] data = br.ReadBytes((int) sizeByte);
return data;
}
public byte[] ImageToByteArray(Image img)
{
if (img == null)
return null;
BinaryFormatter bf = new BinaryFormatter();
MemoryStream ms = new MemoryStream();
bf.Serialize(ms, img);
return ms.ToArray();
}
public Image BrowseImage(Image image)
{
OpenFileDialog open = new OpenFileDialog();
open.FileName = string.Empty;
open.Filter = "Image Files(*.png; *.jpg; *.jpeg; *.gif; *.bmp)|*.png; *.jpg; *.jpeg; *.gif; *.bmp";
if (open.ShowDialog() == DialogResult.OK)
{
Image img = new Bitmap(open.FileName);
if ((img.Width < 200) || (img.Height < 200))
{
MessageBox.Show("Minimum size is 200x200.");
BrowseImage(image);
}
else
{
return img;
}
}
return image;
}
in saving image
picItem.Image = Crop(BrowseImage(picItem.Image), 200, 200, ImageUtil.AnchorPosition.Center);
//set Datatable row
erow["Image"] = img.ImageToByteArray(picItem.Image);
//Saving is ok
//When i View
picItem.Image = ByteArrayToImage((byte[])source.Image.binaryFromDB);
>Error: End of Stream encountered before parsing was completed?
これがすべての方法です。最小サイズになるように画像をトリミングします。変換を試みましたが、助けにはなりませんでした。画像をデータベースに保存したいだけで、表示すると画像ボックスに画像が表示されます。
@MarcGravell問題が見つかりました。u right man.バイトをデータテーブルに保存すると、実際のバイトではなく値System.Byte []が保存されます..データテーブルのすべての値を取得してクエリに入れると、「テーブル値に挿入('System.Byte []'). バイナリ データではなく、文字列 System.Byte" を格納します。