本文整理汇总了C#中System.IO.File.Open方法的典型用法代码示例。如果您正苦于以下问题：C# File.Open方法的具体用法？C# File.Open怎么用？C# File.Open使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.IO.File的用法示例。
在下文中一共展示了File.Open方法的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;
using System.Text;
class Test
{
public static void Main()
{
// Create a temporary file, and put some data into it.
string path = Path.GetTempFileName();
using (FileStream fs = File.Open(path, FileMode.Open, FileAccess.Write, FileShare.None))
{
Byte[] info = new UTF8Encoding(true).GetBytes("This is some text in the file.");
// Add some information to the file.
fs.Write(info, 0, info.Length);
}
// Open the stream and read it back.
using (FileStream fs = File.Open(path, FileMode.Open))
{
byte[] b = new byte[1024];
UTF8Encoding temp = new UTF8Encoding(true);
while (fs.Read(b,0,b.Length) > 0)
{
Console.WriteLine(temp.GetString(b));
}
}
}
}示例2: Main
//引入命名空间
using System;
using System.IO;
using System.Text;
class Test
{
public static void Main()
{
// This sample assumes that you have a folder named "c:\temp" on your computer.
string filePath = @"c:\temp\MyTest.txt";
// Delete the file if it exists.
if (File.Exists(filePath))
{
File.Delete(filePath);
}
// Create the file.
using (FileStream fs = File.Create(filePath))
{
Byte[] info = new UTF8Encoding(true).GetBytes("This is some text in the file.");
// Add some information to the file.
fs.Write(info, 0, info.Length);
}
// Open the stream and read it back.
using (FileStream fs = File.Open(filePath, FileMode.Open, FileAccess.Read))
{
byte[] b = new byte[1024];
UTF8Encoding temp = new UTF8Encoding(true);
while (fs.Read(b,0,b.Length) > 0)
{
Console.WriteLine(temp.GetString(b));
}
try
{
// Try to write to the file.
fs.Write(b,0,b.Length);
}
catch (Exception e)
{
Console.WriteLine("Writing was disallowed, as expected: {0}", e.ToString());
}
}
}
}示例3: Main
//引入命名空间
using System;
using System.IO;
using System.Text;
class Test
{
public static void Main()
{
string path = @"c:\temp\MyTest.txt";
// Create the file if it does not exist.
if (!File.Exists(path))
{
// Create the file.
using (FileStream fs = File.Create(path))
{
Byte[] info = new UTF8Encoding(true).GetBytes("This is some text in the file.");
// Add some information to the file.
fs.Write(info, 0, info.Length);
}
}
// Open the stream and read it back.
using (FileStream fs = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.None))
{
byte[] b = new byte[1024];
UTF8Encoding temp = new UTF8Encoding(true);
while (fs.Read(b,0,b.Length) > 0)
{
Console.WriteLine(temp.GetString(b));
}
try
{
// Try to get another handle to the same file.
using (FileStream fs2 = File.Open(path, FileMode.Open))
{
// Do some task here.
}
}
catch (Exception e)
{
Console.Write("Opening the file twice is disallowed.");
Console.WriteLine(", as expected: {0}", e.ToString());
}
}
}
}