本文整理汇总了C#中System.IO.StreamReader类的典型用法代码示例。如果您正苦于以下问题：C# StreamReader类的具体用法？C# StreamReader怎么用？C# StreamReader使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
StreamReader类属于System.IO命名空间，在下文中一共展示了StreamReader类的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Main
//引入命名空间
using System;
using System.IO;
class Test
{
public static void Main()
{
try
{
// Create an instance of StreamReader to read from a file.
// The using statement also closes the StreamReader.
using (StreamReader sr = new StreamReader("TestFile.txt"))
{
string line;
// Read and display lines from the file until the end of
// the file is reached.
while ((line = sr.ReadLine()) != null)
{
Console.WriteLine(line);
}
}
}
catch (Exception e)
{
// Let the user know what went wrong.
Console.WriteLine("The file could not be read:");
Console.WriteLine(e.Message);
}
}
}示例2: Main
//引入命名空间
using System;
using System.IO;
using System.Threading.Tasks;
class Example
{
static async Task Main()
{
await ReadAndDisplayFilesAsync();
}
static async Task ReadAndDisplayFilesAsync()
{
String filename = "TestFile1.txt";
Char[] buffer;
using (var sr = new StreamReader(filename)) {
buffer = new Char[(int)sr.BaseStream.Length];
await sr.ReadAsync(buffer, 0, (int)sr.BaseStream.Length);
}
Console.WriteLine(new String(buffer));
}
}输出：
This is the first line of text in a relatively short file. This is the second line. This is the third line. This is the fourth and final line.
示例3: new StreamReader(FileStream fs)
//引入命名空间
using System;
using System.IO;
class MainClass {
public static void Main(string[] args) {
try {
FileStream fs = new FileStream("c:\\a.txt", FileMode.Open);
StreamReader sr = new StreamReader(fs);
string line = "";
int lineNo = 0;
do {
line = sr.ReadLine();
if (line != null) {
Console.WriteLine("{0}: {1}", lineNo, line);
lineNo++;
}
} while (line != null);
} catch (Exception e) {
Console.WriteLine("Exception in ShowFile: {0}", e);
}
}
}