C# :: Opening / Finding And Reading A Value From Excel
Jul 3, 2014
I'm attempting to write a method that opens a file from Excel, finds a value within the spreadsheet and returns the value from another column along that row.
So I know I want to pass in the filename and the item I'm initially searching for, plus also a column identifier and that way I can locate so something like this:
public static int GetParameter(string filename, string parameter, string channel)
I've attached a snip of the spreadsheet so you can see what I'm lokoing at. I want to open the spreadsheet, find the parameter I've specified, move along the column to find the channel I've specified and finally read and return the value.
The bit that's troubling me is I have no idea how to work with excel in c#. I've done a few searches and I believe I need to add thiese references
using DocumentFormat.OpenXml.Spreadsheet;
using DocumentFormat.OpenXml.Office2010.Excel;
using DocumentFormat.OpenXml.Office.Excel;
using Excel = Microsoft.Office.Interop.Excel;
using Excel;
I have added those usings and also made reference to them in my project. I was also looking at this as well but it just confuses me in how I add my parameters and modify the code to suit:
using System;
using System.Windows.Forms;
using Excel = Microsoft.Office.Interop.Excel;
namespace WindowsApplication1 {
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
I'm in a CIS 143 class which is Introduction to Programming using C++. We've been assigned a lab with little to no detail on how to do the things listed.
The purpose of this lab is to practice the file input and output concepts. For this lab you may assume that the input files exist and contain appropriate data inside of them.
Four separate text files* which contain the following lines, different for each file.
(*: This isn't on the lab, but don't worry about what the name, age, id, and major are. those can be random and I can just change them what they need to be)
Name Age Student ID Number Major
Your program should ask the user which of the four input files they would like to open, and then read the contents from the file. Once the contents have been read in, it should output to both the screen and a file named "output.txt" the four values were read in, arranged as follows:
"Hello <name>! You are a <age> years old <major> student, and your ID number is <ID number>"
Now I am by no means saying "Do it for me". I just need to know how to have a user type file1, file2, file3, or file4, and then have the program open that file, then have the output.txt file arrange the wording into the sentence above.
This is what I have so far and I don't think it is anywhere near correct:
#include <iostream> #include <fstream> #include <string> using namespace std; int main() { ifstream inFile; string file1; string file2;
I am writing to write a program and performs the following tasks
- Reading a file (txt file contains some temperature values) - Display the temperature values (contents of the file) - Calculating the average of the temperature values in the file. - finds the maximum and minim value of temperature in the file.
The program is user interactive and waits for the user input and process according to his input (choice)
I have managed to complete the program and covered all the expect except the error handling for file opening and reading, although I have managed to do it for the part one part (i.e for the choice == 1)
I can repeat it for the other choices (i.e for 2, 3 ) but I do not want to repeat the code and do it in a different function or do it once for all. While making an attempt I can not handle the rest of the program and all the program turns into a mess.
#include <iostream> #include <fstream> #include <iomanip> int menu(); int myChoice(char); char inputValidating();
[Code] .....
Need Error handling for file opening and Reading that is used once, So far I have managed to do it for choice 1
I just got a job programming a windows application. One of the requirements is reading and writing values from an excel spreadsheet. Looking online, it appears that C++ isn't the best (one of the worst?) languages for reading and writing values from excel files. Now the language I'm most familiar with is C++ and I've been looking at C#, and it appears to be much easier to read excel files.
Now I can fatch all the excel sheet belongs to the Excel File.But How can I check "If and Only If the sheets are havin Underscore in their name(eg. student_data,teachers_data) then only the data of the sheets will populate in tha data base"
Error Message: $ ./dirsearch ~/Documents/College/textfiles/ [..] [yomama.txt] Error : Failed to open entry file - No such file or directory
Here are my current file permissions: textfiles$ ls -l total 8 -rw-rw-rw- 1 jav jav 7 Apr 26 13:14 moretext.txt -rw-rw-rw- 1 jav jav 10 Apr 26 12:38 yomama.txt
I want to open an application A from another application B. By opening it, I don't want to open it within B. I found many ways to call an application from within another. However, what I want to do is open the other one(A) simultaneously. How can I achieve this? fork() and exec() seem to open A within B. I am developing a code for Linux and Mac.
How to open a file and just print what is in that file on the screen. I though maybe I had the directory wrong but putting G: or G: give me the same result. When I select 1 it just goes to the next line and doesn't print anything.
Code: int getchoice(void) { int num; int choice; FILE* outputfile;
this is my read/write functions based the read from the last post! then went nuts with it! used the %19s%*s on the write to the file, solved all the probs on the read side! but any refining on this would be great. This is another program that i started with the forums, and started going my own direction!
I am getting an error when i try to open FILE which user must enter then program must open that file i an function and copy string from that file in other .
why this is looping in an error message. I am inputting the entire file name when I run the program and it just keeps falling into my "if(!inputfile)" statement. Let me know if there is anything I'm just not seeing.
I am trying to switch between 2 states, and the event that determines which state i am in is based on the key i've pressed. So in this case i want the webcam to start automatically, and when key is pressed it then turns it off. The way I've done it is like this :
bool webcam_on() { int c = 0; VideoCapture cap(0); if ( !cap.isOpened() ) // if not success, exit program
[Code] .....
The problem with this method is that cin.get() blocks the video stream.. I wanted something that the webcam turned on until i press some key, which would trigger the release.. How can this be done?
So I'm trying to see if it fails, but if i change "Input" name would the computer just create a new file name of it for example if i change "Input" to "asdf" the computer is just going to create "asdf" how do i fix it.
I want to open a command prompt from a console application in a separate window and write some lines of text in the new command prompt.
In the Below code it is not opening the new cmd and not writing the text...
Here is the code: public static int Main(string[] args) { int retValue = 0; try { ProcessStartInfo MyProcess = new ProcessStartInfo(); MyProcess.FileName = "cmd.exe";
So once I click browse I get something like "E:New Files" But there is this .log file in this folder which I want to automatically store in this path.
Right now I have to click on this .log file and then select open. Is there a way I can directly load the file.I have been trying to use the FileStream but no luck.
