EN
C# / .NET - get file size
5 points
In this article, we're going to have a look at how to get file size in C# / .NET.
Quick solution:
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FileInfo file = new System.IO.FileInfo(@"C:\path\to\file.txt");2
int fileSize = file.Length;
Look at the below code to see practical usage example:
In the presented solution FileInfo class was used with Length property that returns file size.
Note: if file was modified after
FileInfoobject was createdRefresh()method should be called on the object to get current file inforamtions.
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using System;2
using System.IO;3
4
public static class Program5
{6
public static void Main(string[] args)7
{8
string path = @"C:\path\to\file.txt";9
10
FileInfo info = new FileInfo(path);11
Console.WriteLine("File size: " + info.Length + " bytes");12
}13
}Output:
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File size: 46 bytesIn some cases when we use Length property with specific stream, we need to be sure that the property is implemented - for File.Open method result it is.
Note: this approach is useful when we have opened stream.
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using System;2
using System.IO;3
4
public class Program5
{6
public static void Main(string[] args)7
{8
string path = @"C:\path\to\file.txt";9
10
using (FileStream stream = File.Open(path, FileMode.Open))11
{12
Console.WriteLine("File size: " + stream.Length + " bytes");13
}14
}15
}Output:
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File size: 46 bytes