I think you are making things harder on yourself than necessary by doing this with an HttpListener rather than using the built in facilities of ASP.Net. But if you must do it this way here is some sample code. Note: 1) I’m assuming you’re using enctype=”multipart/form-data” on your <form>. 2) This code is designed to … Read more
If you want for some reason to convert your file to base-64 string. Like if you want to pass it via internet, etc… you can do this Byte[] bytes = File.ReadAllBytes(“path”); String file = Convert.ToBase64String(bytes); And correspondingly, read back to file: Byte[] bytes = Convert.FromBase64String(b64Str); File.WriteAllBytes(path, bytes);
Original Answer (Read Update Below!) Simply do: byte[] allData = read1.ReadBytes(int.MaxValue); The documentation says that it will read all bytes until the end of the stream is reached. Update Although this seems elegant, and the documentation seems to indicate that this would work, the actual implementation (checked in .NET 2, 3.5, and 4) allocates a … Read more
This is a slight modification from: http://msdn.microsoft.com/en-us/library/aa287535%28VS.71%29.aspx 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) { if ( line.Contains(“word”) ) { Console.WriteLine (counter.ToString() + “: ” + line); } counter++; } file.Close();
I realize this is really belated, but I just stumbled onto this incredible flaw in StreamReader myself; the fact that you can’t reliably seek when using StreamReader. Personally, my specific need is to have the ability to read characters, but then “back up” if a certain condition is met; it’s a side effect of one … Read more
As Jared says, You cannot do this unless the other entity which has the file open allows for shared reads. Excel allows shared reads, even for files it has open for writing. Therefore, you must open the filestream with the FileShare.ReadWrite parameter. The FileShare param is often misunderstood. It indicates what other openers of the … Read more
Ok, two edits later… This should work. The first time I tried it I think I had forgotten to set FileMode.Append on the oStream. string test = “foo.txt”; var oStream = new FileStream(test, FileMode.Append, FileAccess.Write, FileShare.Read); var iStream = new FileStream(test, FileMode.Open, FileAccess.Read, FileShare.ReadWrite); var sw = new System.IO.StreamWriter(oStream); var sr = new System.IO.StreamReader(iStream); var … Read more
Read all file content. Make a replacement with String.Replace. Write content back to file. string text = File.ReadAllText(“test.txt”); text = text.Replace(“some text”, “new value”); File.WriteAllText(“test.txt”, text);
A quick jump into Reflector.NET shows that the Close() method on StreamWriter is: public override void Close() { this.Dispose(true); GC.SuppressFinalize(this); } And StreamReader is: public override void Close() { this.Dispose(true); } The Dispose(bool disposing) override in StreamReader is: protected override void Dispose(bool disposing) { try { if ((this.Closable && disposing) && (this.stream != null)) { … Read more
If you are using .NET 4.0, try MemoryMappedFile which is a designed class for this scenario. You can use StreamReader.ReadLine otherwise.