how to read xlsx file

One of the tablespace is read-only in your database. The Los S of allControl file forced you to recreate the control file. Which operation doYou need to perform after re-creating the control file and opening theDatabase?A. Drop and re-create the read-only tablespacesB. Renam

\n", bytes,0,0,0,0,0);Close (FD);return ERROR;}Close (FD);FD = open ("/d/my.txt", o_rdwr,0);if (fd = =-1) {Logmsg ("Error:open file failed\r\n", 0,0,0,0,0,0);return ERROR;}bytes = Read (fd,revbuf,sizeof (REVBUF));Logmsg ("read%d bytes data\r\n", bytes,0,0,0,0,0);REVBUF[9] = ' + ';Logmsg ("read%d bytes data, and

Copy a file:Fileinfo fimyfile = new fileinfo (@ "C: \ 123 \ 456.txt ");If (fimyfile. exists){Fimyfile. copyto (@ "D: \ 123 \ 456.txt", true );} Delete an object:Fileinfo fimyfile = new fileinfo (@ "C: \ 123 \ 456.txt ");If (fimyfile. exists){Fimyfile. Delete ();} // Copy an objectFile. Copy (orignfile, newfile );// Delete an objectFile. Delete (delfile );// Move the fileFile. Move (orignfile, newfile ); If (file. exists (orignfile )){Fileinfo Fi

Ways to read data from a fileconst char * filename = "c:/abc.txt";FILE * fp = fopen (filename, "RB");if (fp = = NULL){printf ("Open file failed!") \ n ");return-1;}Mode selection is "RB" (read binary)Reading datasize_t fread (void * buf,size_t size,size_t Nelem,//maximum number of bytes readFILE * FP)Returns the number

This article mainly introduces PHP based on file lock to solve multiple processes at the same time read and write a file, combined with examples of PHP use flock for file read and write lock operation usage, the need for friends can refer to the next Specific as follows:

File tag act = read (only one line of code reads the file content), fileact Function: · Read File Content Usage: · Act = read: read operation · Id: name of the returned schoolbag (opt

object (); Failed,the object in map does not implement Serializable interface hashmap 2. Reading objects from files You can read objects from a file using the following methods public static Object Readobjectfromfile () { object temp=null; File file =new

Using system. IO;Using itextsharp. text;Using itextsharp.text.pdf;// Icsharpcode. sharpziplib. dll and itextsharp. dll must be referenced in the project.Public String txtfilepath;Public String savepdfpath; // path for saving the PDF file# Region read TXT contentPrivate string readxieyi (string filepath){String xieyi = "";Fileinfo Fi = new fileinfo (filepath );Streamreader sr = Fi. opentext ();Xieyi = Sr. re

Write Java program often encountered to read such as txt or write TXT file, but because to define a lot of variables, often do not remember, every time to check, hereby tidy up, easy to use, convenient understood! Packageedu.thu.keyword.test;ImportJava.io.File;ImportJava.io.InputStreamReader;ImportJava.io.BufferedReader;ImportJava.io.BufferedWriter;ImportJava.io.FileInputStream;ImportJava.io.FileWriter; Pub

Copy file of java file stream (read one byte array at a time), number of bytes of copy Package fileoutputstream; import java. io. fileInputStream; import java. io. fileOutputStream; public class CopyFileDemo {public static void main (String [] args) throws Exception {// encapsulate the data source FileInputStream FD = new FileInputStream ("fos.txt "); // FileOutp

This article describes the Java read WAV file (waveform file) and the method of drawing waveform diagram. Share to everyone for your reference. Specifically as follows: Because a lot of netizens recently asked me about the waveform file reading and writing problems, in order to make everyone more convenient and let th

filewriter", "test/writer1.txt"); forbufferedwriter ("write files with bufferedwriter ", "Test/writer2.txt ");} Reader reads files with filereader Public static void testreadbyreader (string filename) {file = new file (filename); filereader FD = NULL; try {FD = new filereader (File ); char [] arr = new char [1024*1000*6]; int Len = fiis.

Java handles large files, generally with bufferedreader,bufferedinputstream such as buffered IO classes, but if the file is oversized, the faster way is to use Mappedbytebuffer.Mappedbytebuffer is a File memory mapping scheme introduced by Java NIO, which is very high in read and write performance. The main thing about NIO is the implementation of support for asy

In the previous section we learned about data binding, because I personally am more satisfied with the previous one, at least relative to the previous ones (I also know that the previous write is too bad, will continue to revise, blog also like software). At the beginning of this section we will see how the Windows app operates the files.Read the file name, folder name on WindowsFirst we define a button and a TextBlock in XAML, and the process of read

The file function does not need to use php to read the last line of a large file. The file function does not need to use php to read the last line of a large file. Share: The file funct

This article mainly for you to share a Python read CSV file to remove a column and then write a new file instance, has a very valuable reference, I hope to help you. Follow the small part together to see it, hope to help everyone better grasp the python Two ways to solve the problem are the existing solutions on the Web. Scenario Description: There is a data

The file function does not need to use php to read the last line of a large file. The file function does not need to use php to read the last line of a large file. Share: The file funct

1. Create an open file dialog box:Cfiledialog DLG (true, // true indicates the create open file dialog box, and false indicates the save file dialog box.". Txt", // The default file type to openNull, // default open file nameOfn_hidereadonly | ofn_overwriteprompt, // open th

Unable to copy xxxx: The file is being used by another person or program, in this case how to use QT copy this file, or read out the contents of the fileThe file is being used by another person or program, in this case how to use Delphi to copy this file, or directly

In the process of data processing, such as GPS or total station, obtained from these instruments are the specified format of the coordinate files, in the process of data processing, we often need to take these coordinates out of the processing, such ascoordinate name, X, y01,23.4,33.202,23.4,33.203,23.4,33.204,23.4,33.205,23.4,33.206,23.4,33.207,23.4,33.2C + + or C can be read using the scanf function, or C + + can