流式读取数组C#

Question

string[]文件名=openFileDialog1.filenames；

如何读取此数组？

是否需要将每个文件路径设置为其自己的字符串？？？我一无所知。

Answer 1

您的意思是访问数组中的元素吗？

for (int i = 0; i < filenames.Length; i++)
    MyDoSomethingMethod(filenames[i]);

正如另一个答案所指出的，你也可以使用foreach来访问每个项目

foreach (String filename in filenames)
    DoSomething(filename);

当您访问文件名[some_index]时，您已经访问了字符串，因此无需将其保存到另一个变量中即可使用它。foreach循环也是如此。

Answer 2

假设您想遍历文件名并对每个文件执行某些操作，下面是一个示例：

foreach (String file in openFileDialog1.FileNames) 
{
    // read file lines
    try
    {
        using (StreamReader sr = File.OpenText(file))
        {
            String input;
            while ((input = sr.ReadLine()) != null)
            {
                Console.WriteLine(input);
            }
            Console.WriteLine ("The end of the stream has been reached.");
        }

    }
    catch (SecurityException ex)
    {
        // The user lacks appropriate permissions to read files, discover paths, etc.
        Console.WriteLine ("Security error. Please contact your administrator for details.nn" +
            "Error message: " + ex.Message + "nn" +
            "Details (send to Support):nn" + ex.StackTrace
        );
    }
    catch (Exception ex)
    {
        // Could not load the file - probably related to Windows file system permissions.
        Console.WriteLine ("Cannot display the file: " + file.Substring(file.LastIndexOf('\'))
            + ". You may not have permission to read the file, or " +
            "it may be corrupt.nnReported error: " + ex.Message);
    }
}