streamwriter

Question: What is different between FileStream and StreamWriter in dotnet? What context are you supposed to use it? What is their advantage and disadvantage? Is it possible to combine these two into one? What is different between FileStream and StreamWriter in dotnet? A FileStream is a Stream . Like all Streams it only deals with byte[] data. A StreamWriter : TextWriter , is a Stream-decorator. A TextWriter encodes Text data like string or char to byte[] and then writes it to the linked Stream . What context are you supposed to use it? What is their advantage and disadvantage? You use a bare

I have an array list which contains 100 lines. When i try to export it into a text file (txt), the output is only 84 lines and it stops in the middle of the 84th line. When I looked at the file size it showed exactly sharp 4.00KB as if there is some kind of a limit to the stream writer. I tried using different parameters etc. but it kept happening. Here is the code: FileStream fs = new FileStream(path, FileMode.Create); StreamWriter sw = new StreamWriter(fs); ArrayList chartList = GetChart(maintNode); foreach (var line in chartList) { sw.WriteLine(line); } fs.Close(); Console.WriteLine("Done")

var fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite); using(var writer = new StreamWriter(fs)) writer.Write(....); If the file previously contained text and the newly-written text is shorter than what was already in the file, how do I make sure that the obsolete trailing content in the file is truncated? Note that opening the file in truncate mode isn't an option in this case. The file is already open when I receive the FileStream object. The above code is just to illustrate the stream's properties. EDIT Expanding on the answer below, the solution is: var fs = new

This question already has an answer here: Append lines to a file using a StreamWriter 10 answers This is probably a pretty simple question. In C# I'm trying to write a simple method, called my "DebugWrite" method, to write out any exceptions caught within my program to a text file stored locally. My current code only writes a new file every time, using StreamWriter How do you program it to check if the file already exists, and if so to append to the current text?. IE: If(~Exist(debug.txt) { Write new debug.txt. } else if(exist(debug.txt)) { Append new text. } using(StreamWriter writer = new

I have to write thousands of dynamically generated lines to a text file. I have two choices, Which consumes less resources and is faster than the other? A. Using StringBuilder and File.WriteAllText StringBuilder sb = new StringBuilder(); foreach(Data dataItem in Datas) { sb.AppendLine( String.Format( "{0}, {1}-{2}", dataItem.Property1, dataItem.Property2, dataItem.Property3)); } File.WriteAllText("C:\\example.txt", sb.ToString(), new UTF8Encoding(false)); B. Using File.AppendText using(StreamWriter sw = File.AppendText("C:\\example.txt")) { foreach (Data dataItem in Datas) { sw.WriteLine(

I have a VB 2010 Express Project, that has a DataGridView in it, that I am trying to write to a CSV file. I have the write all working. But its slow. Slow = maybe 30 seconds for 6000 rows over 8 columns. Here is my code: Private Sub btnExportData_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExportData.Click Dim StrExport As String = "" For Each C As DataGridViewColumn In DataGridView1.Columns StrExport &= """" & C.HeaderText & """," Next StrExport = StrExport.Substring(0, StrExport.Length - 1) StrExport &= Environment.NewLine For Each R As DataGridViewRow In