c# - Foreach 文件夹中的位图

Question

所以下面是一些使用 TessNet 的 OCR 工具扫描文件夹中的每个位图并将 OCR 信息处理成List<tessnet2.Word> result. 但我似乎无法让 foreach 正常工作。我收到以下错误foreach statement cannot operate on variables of type 'System.IO.DirectoryInfo' because 'System.IO.DirectoryInfo' does not contain a public definition for 'GetEnumerator'

     DirectoryInfo diBMP = new DirectoryInfo("c:\\temp\\bmps");

                            foreach (Bitmap bmp in diBMP)
                            {                                         
                              using (tessnet2.Tesseract tessocr = new tessnet2.Tesseract())
                                    {                                        

                                        tessocr.Init(@"C:\Users\Matt Taylor\Documents\Visual Studio 2012\Projects\TessNet2\TessNet2\bin\Debug\tessdata", "eng", false);

                                        tessocr.GetThresholdedImage(bmp, System.Drawing.Rectangle.Empty).Save("c:\\temp\\" + Guid.NewGuid().ToString() + ".bmp");


                                        Console.WriteLine("Normal version");
                                        List<tessnet2.Word> result = ocr.DoOCRNormal(bmp, "eng");

                                        CheckANDCorrectPDForientation(result, pdfFiles);                                                                             
                                    }                                    
                            }

Answer 1

看起来你想要

foreach(string s in Directory.EnumerateFiles(dir, "*.bmp"))
{
    using(Bitmap bmp = new Bitmap(s))
    {
      //code here
     }
 }

你的错误是因为 foreach 循环必须有一些东西要循环，DirectoryInfo只会给你有关目录的信息