C# Console.OpenStandardOutput()用法及代码示例

Console.OpenStandardOutput方法用于获取标准输出流。下面列出了C#中提供的OpenStandardOutput方法的两个重载：

OpenStandardOutput()方法
OpenStandardOutput(int32)方法

OpenStandardOutput()方法

它用于获取标准输出流。

用法：public static System.IO.Stream OpenStandardOutput ();

参数： This method does not accepts any parameter.

Return value: This method returns the standard output stream.

例：

// C# program to illustrate the 
// Console.OpenStandardOutput() 
// method 
using System; 
class GFG 
{ 
    static void Main(string[] args) 
    { 
        // use of Console.OpenStandardOutput() method 
        // to print the Geeksforgeeks 
        // BeginWrite returns an IAsyncResult that represents 
        //  the asynchronous write 
        // int32 value like 071, 101 represents the  
        // ascii value of Geeksforgeeks 
        if (System.Console.OpenStandardOutput().BeginWrite(new byte[] { 071, 101,101,  
            107,115, 102, 111, 114, 103, 101,101,  
            107,115, 0 },0,  
            13, null, null).AsyncWaitHandle.WaitOne())  
        {  
        } 
    } 
}

输出：

Geeksforgeeks

OpenStandardOutput(Int32)方法

它用于获取标准输出流，该输出设置为指定的缓冲区大小。

用法：public static System.IO.Stream OpenStandardOutput (int bufferSize);

参数： This method accepts the following parameter.

缓冲区大小：此参数是内部流缓冲区的大小。

返回值：此方法返回标准输出流。
异常：如果buffersize小于或等于零，则此方法将提供ArgumentOutOfRangeException。

例：它用制表符替换字符串中的两个连续空格字符。

// C# program to illustrate the  
// Console.OpenStandardOutput(int32) method 
using System; 
using System.IO; 
   
public class GFG 
{ 
    // size of tab 
    private const int Val1 = 2; 
       
    // working string 
    private const string Val_Text = "Geeks for Geeks"; 
   
    // main function 
    public static int Main(string[] args) 
    { 
        // check for the argument 
        if (args.Length < 2) 
        { 
            Console.WriteLine(Val_Text); 
            return 1; 
        } 
   
        try
        { 
            // replacing space characters in a string with 
            // a tab character 
            using (var wrt1 = new StreamWriter(args[1])) 
            { 
                using (var rdr1 = new StreamReader(args[0])) 
                { 
                    Console.SetOut(wrt1); 
                    Console.SetIn(rdr1); 
                    string line; 
                    while ((line = Console.ReadLine()) != null) 
                    { 
                        string newLine = line.Replace(("").PadRight(Val1, ' '), "\t"); 
                        Console.WriteLine(newLine); 
                    } 
                } 
            } 
        } 
        catch(IOException e) 
        { 
            TextWriter errwrt = Console.Error; 
            errwrt.WriteLine(e.Message); 
            return 1; 
        } 
          
        // use of OpenStandardOutput() method 
        var standardOutput = new StreamWriter(Console.OpenStandardOutput()); 
        standardOutput.AutoFlush = true; 
          
        // set the output 
        Console.SetOut(standardOutput); 
        Console.WriteLine("OpenStandardOutput Example"); 
        return 0; 
    } 
}

输出：

Geeks for Geeks

相关用法

注：本文由纯净天空筛选整理自SHUBHAMSINGH10大神的英文原创作品 Console.OpenStandardOutput() Method in C# with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。