C# 中針對 System.Runtime.InteropServices.ExternalException:“GDI+ 中發生一般性錯誤。”另一種圖片保存方案

一般常用寫Bimap保存會報錯GDI+會報錯的寫法

 1         public void GetImageLocal()
 2         {
 3             int num = 9;
 4             int initWidth = 256;
 5             int initHeight = 256;
 6 
 7             for (var c = '\uff41'; c <= '\uff5a'; c++)
 8             {
 9                 Bitmap image = new Bitmap(initWidth, initHeight);//初始化大小
10                 Graphics g = Graphics.FromImage(image);
11                 g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;//設定圖片質量
12                 num = (int)c;
13                 switch (num % 8)//設定圖片不同背景色
14                 {
15                     case 1:
16                         g.Clear(Color.FromArgb(255, 139, 139));
17                         break;
18                     case 2:
19                         g.Clear(Color.FromArgb(97, 191, 173));
20                         break;
21                     case 3:
22                         g.Clear(Color.FromArgb(22, 124, 127));
23                         break;
24                     case 4:
25                         g.Clear(Color.FromArgb(50, 182, 122));
26                         break;
27                     case 5:
28                         g.Clear(Color.FromArgb(191, 181, 215));
29                         break;
30                     case 6:
31                         g.Clear(Color.FromArgb(240, 207, 97));
32                         break;
33                     case 7:
34                         g.Clear(Color.FromArgb(5, 90, 91));
35                         break;
36                     default:
37                         g.Clear(Color.FromArgb(5, 90, 91));
38                         break;
39                 }
40 
41                 Font font = new Font("Arial ", 88);//, System.Drawing.FontStyle.Bold);//設定字體樣式，大小
42                 Brush brushbackground = new SolidBrush(Color.White);
43                 Brush brush = new SolidBrush(Color.FromArgb(166, 8, 8));
44                 g.DrawString(c.ToString(), font, brushbackground, 45, 60);//設定位置
45                 image.Save(Application.StartupPath + "\\img\\" + (num).ToString() + ".jpg", ImageFormat.Jpeg);//自己創建一個檔案夾，放入生成的圖片（根目錄下）
46             }
47 
48         }

這種寫法一般都會報錯，具體怎么找到問題點呢？一時半會也不好找

所以用個通用的寫法如下

      public void AddTextToImgName(string text)
        {
            //判斷指定圖片是否存在
            if (!File.Exists(AddNameFilePath))
            {
                throw new FileNotFoundException("The file don't exist!");
            }
            if (text == string.Empty)
            {
                return;
            }
            System.Drawing.Image image = System.Drawing.Image.FromFile(AddNameFilePath);
            Bitmap bitmap = new Bitmap(image, image.Width, image.Height);
            System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
            //字體大小
            float fontSize = 136.0f;
            //文本的長度
            float textWidth = text.Length * fontSize;
            //下面定義一個矩形區域，以后在這個矩形里畫上白底黑字
            float rectX = 120;
            float rectY = 400;
            float rectWidth = text.Length * (fontSize + 140);
            float rectHeight = fontSize + 70;
            //宣告矩形域
            RectangleF textArea = new RectangleF(rectX, rectY, rectWidth, rectHeight);
            //定義字體
            System.Drawing.Font font = new System.Drawing.Font("思源黑體", fontSize, System.Drawing.FontStyle.Bold);
            //font.Bold = true;
            //白筆刷，畫文字用
            System.Drawing.Brush whiteBrush = new SolidBrush(System.Drawing.Color.Black);
            //黑筆刷，畫背景用
            //Brush blackBrush = new SolidBrush(Color.Black);   
            //g.FillRectangle(blackBrush, rectX, rectY, rectWidth, rectHeight);
            g.DrawString(text, font, whiteBrush, textArea);
            g.SmoothingMode = SmoothingMode.AntiAlias;
            g.InterpolationMode = InterpolationMode.HighQualityBicubic;
            g.CompositingQuality = CompositingQuality.HighQuality;
            //輸出方法一：將檔案生成并保存到根目錄

            //Bitmap bmp = new Bitmap(image);
            //string path = AppDomain.CurrentDomain.SetupInformation.ApplicationBase + "AddName.jpg";
            //bmp.Save(path, System.Drawing.Imaging.ImageFormat.Jpeg);
            string path = AppDomain.CurrentDomain.SetupInformation.ApplicationBase + "AddName.jpg";
            bitmap.Save(path, System.Drawing.Imaging.ImageFormat.Jpeg);
            g.Dispose();
            bitmap.Dispose();
            image.Dispose();
        }

這個隨筆只是做個記錄，遇到的時候，可以翻翻看，謝謝觀看，

標籤：.NET技术

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