streamwriter | 易学教程

c# using statement and StreamWriter

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问题 I am using a StreamWriter to write things into notepad. And I discover if I am not using statement and instance the StreamWriter alone. The method is unable to run. Does anybody know the reason? static void Main(string[] args) { //StreamWriter c = new StreamWriter(@"C:\Users\rxxx\Desktop\important.txt", true); using (StreamWriter c = new StreamWriter(@"C:\Users\xxx\Desktop\important.txt", true)) { c.WriteLine("hello"); } This can be run. But if I run the remarked part instead. The Notepad

Write Text In A Already Existing Text File VB.NET

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问题 I've been developing a arcade game, and as every good arcade game, it has an incorporated scoreboard so that players can see who scored better. My problem is that everytime it enters a new scoreline, it deletes all the previous lines in the text file. The code I've been using is the following: If player1 > 25 Then objReader.Close() MsgBox("O " + jogador1 + " ganhou.") tab1.Enabled = False Dim wrtScore As String = "C:\Documents and Settings\Joao\My Documents\Visual Studio 2010\Projects

Reading and writing very large text files in C#

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问题 I have a very large file, almost 2GB in size. I am trying to write a process to read the file in and write it out without the first row. I pretty much have been only able to read and write one line at a time which takes forever. I can open it, remove the first row and save it faster in TextPad, though that is still very slow. I use this code to get the number of records in the file: private long getNumRows(string strFileName) { long lngNumRows = 0; string strMsg; try { lngNumRows = 0; using

Getting the file size from StreamWriter [closed]

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问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 6 years ago . using (var writer = File.CreateText(fullFilePath)) { file.Write(fileContent); } Given the above code, can the file size be known from StreamWriter ? 回答1: Yes, you can, try the following long length = writer.BaseStream.Length;//will give unexpected output if autoflush is false and write has been

How to write Arabic, Hebrew Into CSV file? [closed]

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问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 6 years ago . I can't write to Results.csv any of the languages Arabic or Hebrew, except English. Each time I'm trying to write any one of them I'm getting gibberish

Dictionary Ordering

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问题 I am using this var ordered = dictionary.Keys.OrderBy(x => x); to order a dictionary. This works great ordering the dictionary alpha-numerically and I would like to keep it this way and add a few exceptions... So right now, the ordered dictionary looks like this for the output: 1: "0603C" "113456" 1 2: "0603C" "984132" 8 3: "0603R" "11115" 3 4: "0603R" "13554" 1 5: "1608C_1.0" "119764" 2 6: "1608C_1.0" "147429" 54 7: "1608R_1.0" "122951" 4 8: "1608R_1.0" "147446" 1 9: "1608R_1.0" "147448" 23

How to write an observable collection to a txt file?

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Whats the best way to write an observable collection to a txt file? I currently have the following public ObservableCollection<Account> SavedActionList = new ObservableCollection<Account>(); using (System.IO.StreamWriter file = new System.IO.StreamWriter("SavedAccounts.txt")) { foreach (Account item in SavedActionList) { file.WriteLine(item.ToString()); //doesn't work } file.Close(); } I'm not sure why it won't write to the file. Any ideas? You can easily just write: File.WriteAllLines("SavedAccounts.txt", SavedActionList.Select(item => item.ToString())); However, this will require your

Write SQL info to a TXT file

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问题 Im trying to read a row of information from a DB and write that out to a txt file. I have most of it figured out, but I get the following error "A field initializer cannot reference the non-static field, method, or property 'reader_writer.filewriter.filePath'" and I dont know why. Can someone please explain my problem? using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; using System.Data.SqlClient; using System.Data.Common; namespace reader

Adding to text file without deleting

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问题 I need to add 4 variable numbers into a single line but using the current code it just replaces the numbers thus making it pointless. using (StreamWriter writer = new StreamWriter("build.txt")) { writer.Write(" " + layer + " " + x + " " + y + " " + block); Console.WriteLine("[" + layer + "," + x + "," + y + "," + block + "]"); } so I needed it to write... l x y b l x y b l x y b l x y b ... ...but it did not work out like that, and the internet wasn't particularly helpful, hopefully here can

How to transform an xml structure generated from a request to a web services

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问题 I have a string var that store an xml from a request to a RESTful service. I have a problem transforming this with an xslt file on a fly without saving it. I am getting this error System.UriFormatException: Invalid URI: The Uri scheme is too long. On this line xslt.Transform(xmldoc, null, writer); string xmldoc = xReq("http://restful.com/RestAPI"); XslCompiledTransform xslt = new XslCompiledTransform(); xslt.Load(@"C:\Users\XSeXml\xRes.xslt"); string htmlOutput; StringWriter writer = new