text-files

问题 I am trying to read a text file with data according to a specific format. I am using and textscan together with a string containing the format to read the whole data set in one code line. I've found how to read the whole line with fgetl , but I would like to use as few code lines as possible. So I want to avoid own for loops. textscan seems great for that. As an example I'll include a part of my code which reads five strings representing a modified dataset, its heritage (name of old dataset),

问题 I have a text file contains delimited records. 1243;jhhf';982u4k;9u2349;huf8 kij;9238u;98ur23;jfwf;03i24 I need to replace the value of 4th part of every record with the value returned from SQL database ( Select X from T where C='4Th part from the flatfile' ). Regards, SAnthosh. 回答1: Try this: Dim newLines As List(Of String) = New List(Of String) Dim sqlConn As New SqlConnection(connectionString) Dim SQLCmd As New SqlCommand() SQLCmd.Connection = sqlConn Dim lines As String() = File

问题 I have this little piece of C# code in which I'm trying to loop through Worksheets inside an Excel file, copy the UsedRange to the Clipboard and paste it into a text file . The code I have so far appears to work without throwing any errors, but for some reason nothing at all gets written into my text file. Am I missing something? And if I include the System.Reflection.Missing.Value as a parameter for the Copy method, still nothing happens. Here's my code: using (StreamWriter sw = File

问题 Im trying to read data from a text file and loading it into a dataset but the different columns as in the image below are coming as just one long column. I want to return the data as 7 columns (in the same way as its appearing in the image below). This is the code am using, public DataSet LoadTxtFile(int numberOfRows) { DataSet ds = new DataSet(); //try //{ // Creates and opens an ODBC connection string strConnString = "Driver={Microsoft Text Driver (*.txt; *.csv)};Dbq=" + this.dirCSV.Trim()

问题 How can I read content of a text file inside a zip archive? For example I have an archive qwe.zip, and insite it there's a file asd.txt, so how can I read contents of that file? Is it possible to do without extracting the whole archive? Because it need to be done quick, when user clicks a item in a list, to show description of the archive (it needed for plugin system for another program). So extracting a whole archive isn't the best solution... because it might be few Mb, which will take at

问题 This question already has answers here : Fastest Matlab file reading? (4 answers) Closed 6 years ago . I have a .txt file that has been generated from SQL-2005 (in ANSI format). I have tried textscan and fscanf . The entire txt file has only numeric data. Online resources suggest that fscanf is FASTER than textscan but I found it otherwise. Textscan was much faster than fscanf I want to try this with fread as well but I do not know how to import data using fread. Can you please suggest

问题 I have a text file with text on each line. I would like to be able to put each line in one long line along with a space. So, if the text file has: Bob Jack Sam I want the result to be Bob Jack Sam Below are two methods that I am working on but I am stuck. Anything in brackets [] means that I know the syntax is completely wrong; I only put it there to show my thought process. The commented sections are just me experimenting and I have left them in case anyone wants to comment on what they

问题 I added a text file to a resource file in my c# project. In the application I see this file string like : ex. string fileContent = Properties.Resources.fileName; My question is how can I edit the text file and save it back into the resource file using code? 回答1: You probably shouldn't be trying to un-bake an apple pie. The program resources were NOT meant to be a writable database. You should be loading and saving this information in the Environment.SpecialFolders.etc location. If you "must"

问题 my question is related to my previous question (How to display data from txt file in specific format). I was wondering if it is possible at the first place, to store data on txt file in specific format rather than store it first and then retreived it again and display it in specific format? e.g. instead of store data on txt file like this Jessica Walking 20 minutes Matthew Run 10 minutes I wanted to store it in txt file in this format Jessica Walking 20 minutes Matthew Run 10 minutes 回答1:

问题 I would like to load each line in a file into HashSet collection. Is there a simple way to do this? 回答1: How about: Sets.newHashSet(Files.readLines(file, charSet)); (using Guava). References: Files.readLines() Sets.newHashSet() 回答2: You can do Set<String> lines = new HashSet<String>(FileUtils.readLines(new File("foo.txt"))); Using the Apache Commons FileUtils class and the readlines method. 回答3: Multiset can store duplicated strings, if your text contains duplicated lines. (add ordering)