Windows體系中應用C#讀取文本文件內容的小示例。本站提示廣大學習愛好者:(Windows體系中應用C#讀取文本文件內容的小示例)文章只能為提供參考,不一定能成為您想要的結果。以下是Windows體系中應用C#讀取文本文件內容的小示例正文
讀取文本文件中的內容
此示例讀取文本文件的內容以應用 System.IO.File 選件類的靜態辦法 ReadAllText 和 ReadAllLines。
class ReadFromFile { static void Main() { // The files used in this example are created in the topic // How to: Write to a Text File. You can change the path and // file name to substitute text files of your own. // Example #1 // Read the file as one string. string text = System.IO.File.ReadAllText(@"C:\Users\Public\TestFolder\WriteText.txt"); // Display the file contents to the console. Variable text is a string. System.Console.WriteLine("Contents of WriteText.txt = {0}", text); // Example #2 // Read each line of the file into a string array. Each element // of the array is one line of the file. string[] lines = System.IO.File.ReadAllLines(@"C:\Users\Public\TestFolder\WriteLines2.txt"); // Display the file contents by using a foreach loop. System.Console.WriteLine("Contents of WriteLines2.txt = "); foreach (string line in lines) { // Use a tab to indent each line of the file. Console.WriteLine("\t" + line); } // Keep the console window open in debug mode. Console.WriteLine("Press any key to exit."); System.Console.ReadKey(); } }
一次一行地讀取文本文件
本示例應用 StreamReader 類的 ReadLine 辦法將文本文件的內容讀取(一次讀取一行)到字符串中。一切文本行都保留在字符串 line 中並顯示在屏幕上。
int counter = 0; string line; // Read the file and display it line by line. System.IO.StreamReader file = new System.IO.StreamReader(@"c:\test.txt"); while((line = file.ReadLine()) != null) { System.Console.WriteLine (line); counter++; } file.Close(); System.Console.WriteLine("There were {0} lines.", counter); // Suspend the screen. System.Console.ReadLine();