GDI +中发生一般错误.如何解决此错误

问题描述

hi


如果我为
选择图像，则通过按钮单击事件将图像上传到图像控件中第一次会正确显示.如果我再次选择，它将显示错误，例如:
GDI +中发生了一般性错误，这是我的代码:

hi


i uploading the image in the image control with button click event if i select the image for the
first time it will dispalyed correctly .if i reselect again it will display error like:
A generic error occurred in GDI+ here is my code:

private void button11_Click(object sender, RoutedEventArgs e)
        {
            System.Windows.Forms.OpenFileDialog ofd = new System.Windows.Forms.OpenFileDialog();
            string fname = null;
            ofd.Filter = "JPEG|*.jpg|GIF|*.gif|BMP|*.bmp|ICO|*.ico";
            ofd.Title = "Select Picture File";
            ofd.Multiselect = false  ;
            ofd.AddExtension = false;

            if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                fname = ofd.FileName;
                Bitmap originalBMP = new Bitmap(fname);
                int origWidth = originalBMP.Width;
                int origHeight = originalBMP.Height;
                int sngRatio = origWidth / origHeight;
                int newWidth = 100;
                int newHeight = newWidth / sngRatio;

                // Create a new bitmap which will hold the previous resized bitmap
                Bitmap newBMP = new Bitmap(originalBMP, newWidth, newHeight);

                // Create a graphic based on the new bitmap
                Graphics oGraphics = Graphics.FromImage(newBMP);

                // Set the properties for the new graphic file
                oGraphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
                oGraphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                string filename = null;
                filename = "baby10.bmp";

                // Draw the new graphic based on the resized bitmap
                oGraphics.DrawImage(originalBMP, 0, 0, newWidth, newHeight);
                oGraphics.Dispose();
                originalBMP.Dispose();

                // Save the new graphic file to the server
                newBMP.Save(("D:\\") + filename);
                newBMP.Dispose();
                FileStream fs = new FileStream("D:\\baby10.bmp", FileMode.Open, FileAccess.Read);
                img = new byte[fs.Length + 1];
                fs.Read(img, 0, System.Convert.ToInt32(fs.Length));
                fs.Close();
                image1.Source = new BitmapImage(new Uri("D:\\baby10.bmp"));
                flag = true;
                fs.Dispose();

            }
        }

如果有人有任何想法在此编码中做错了什么，请纠正我并提出建议
在此先感谢

[edit]已添加代码块-OriginalGriff [/edit]

if anyone have anyidea what iam doing wrong in this coding please correct me and give suggestion
thanks in advance

[edit]Code block added - OriginalGriff[/edit]

推荐答案

img = new byte[fs.Length + 1];

为什么在字节数组上+1?这意味着您的图像数组在图像数据的末尾将有一个额外的字节0.

Why +1 on the byte array? It means your image array will have an extra byte 0 at the end of the image data.

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