C# :: Displaying Progress Bar While Other Parallel Function Running
May 19, 2014
I have a module that pings the network to find available devices using threading.
the money line:
var valids = range.AsParallel().AsOrdered().Where(ip => ip.Ping()).ToList();
The problem is, I need to display a progress bar while this function runs. I have the progress bar implemented with a background worker, but it won't update while the ping module is executing. I *think* it's because I'm using the available threads for the ping module.
When the user clicks a button, I need the ping module to run while the progress bar updates, or even just set IsIndeterminite to true. What would be the best way to accomplish this?
So the point in this code is to promt the user to enter a product ID. It then should search the ids array and display the corresponding price and quantity from the prices and quantities arrays. I'm sure this is quite simple but I am new to programming and having trouble understanding arrays. All it is doing is giving me the first subscript when I input a -1.
//Advanced34.cpp - displays the price and quantity //associated with a product ID //Created by Scott Knight on April 12, 2014 #include <iostream> using namespace std; int main() { //declare arrays and variables int ids[5] = {10, 14, 34, 45, 78};
This code will read the running process from OS and display it (C++). Specifically, the OS here is Windows XP. The Problem(error) is in (i think) prototype. By the way, it displays following errors.
Error 1 : error LNK2019: unresolved external symbol _EnumProcesses@12 referenced in function _main Error 2 : error LNK2019: unresolved external symbol _GetModuleBaseNameA@16 referenced in function "void __cdecl DisplayProcessNameAndID(unsigned long)" (?DisplayProcessNameAndID@@YAXK@Z) Error 3 : error LNK2019: unresolved external symbol _EnumProcessModules@16 referenced in function "void __cdecl DisplayProcessNameAndID(unsigned long)" (?DisplayProcessNameAndID@@YAXK@Z) Error 4 : fatal error LNK1120: 3 unresolved externals C:Documents and SettingsWindowsMy DocumentsVisual Studio 2008ProjectsaDebuga.exe
#include <afxwin.h> #include <iostream> #include <string.h> #include "psapi.h" unsigned int i; using namespace std;
using namespace std; const int SIZE = 40; const int COLUMN = 5; void getData(ifstream& inf, string n[], double tstData[][COLUMN], int count);
[Code] .....
when I compile and run the code and have it display it does not read the first item into the 1-d array, instead it appears to read the 4th number from the left into the 1-d array and then into the second spot in the 2-d array, then again in its proper place and finally it has this number repeating through the rest of the arrays:
-92559631349317830000000000000000000000000000000000000000000.00 followed by the number 59.7 from the .txt and the long number again.
I want to implement some "debugger like" tool (very limited one, just identify at running time the current stack trace, and print messages from the user) on some code that the user wrote. what I get from the user is a function name (in the beginning of it's declaration), and when the user want to print some message he uses some print macro I should implement.
My target is printing the stack call, and all the messages that the user wrote, in the right place on the running place.
By what c++ feature can know on running time that a specific function code has ended??
Its easy to push a function to some vector when it called (since I get its name from the user), but when it ends and return to the function called it...
Having a little trouble getting my function to display the results. I got my getNumber function working and I know I can't use return to return multiple values so I created a function that would display my results but I am a little lost on how I get the results from one function to another.
#include <iostream> #include <array> #include <iomanip> using namespace std; void printResult(int, int); void getNumber(int &, int &); void printResults (int, int){ int n, n1;
Ok, so the assignment is to use a recursive function to display a request for a certain position in the Fibonacci Sequence (0, 1, 1, 2, 3, 5, 8, 13...)
The program I have written works, but it displays the wrong number in sequence. The book says that when you enter "8" you should receive "13", which is correct in the order of the sequence, though my program is producing "21" which is the next number in the sequence.
I tested it with a few more numbers and when I enter "7" it produces "13" and when I enter "6" it produces "8" and so on.
Code: //Cameron Taylor #include <stdio.h> int main(){
the problem with my code is that trace toggle can only be turn on, not off and trace does not demarcate the (substring) in progress. how do i fix this?
Am developing windows forms application where in my form am fetching data into list from some object which takes around 2 minutes to complete processing so meantime i want to show progress bar before starting process till it ends with percentage. I have return a code to do multitasking but it is throwing error as "Cross-thread operation not valid: Control 'listOrg' accessed from a thread other than the thread it was created on".
private void btnOrg_Click(object sender, EventArgs e) { try { // To report progress from the background worker we need to set this property backgroundWorker1.WorkerReportsProgress = true;
I am running a windows forms project. on the form there is a datagridview, a progress bar, a textbox and two 2 buttons.
The two buttons are used to navigate through the records(one for next record and the other for previous record) the textbox displays the record that is being currently viewed.
How can I link the progress with the database or in this case the datagridview and when the next button is pressed it increments and when the previous button is clicked it decrements and also the progress to be fully filled when the last record is reached ?
For a project I'm working on, I need to be able to download a file from an FTP server and store it to a predetermined location with a predetermined name. No user interaction should be needed. Because the file is rather large, and I need the main program to remain responsive, this is going to need a progress dialog.
I could write all this myself and use the MFC wininet wrappers (CInternetSession et al) to do the downloading, but... Explorer already has this, and IE has such a dialog also. It doesn't seem unreasonable to assume those dialogs are available via some API.
Is a "FTP download with dialog" available as a windows API, or do I really need to write all this myself ?
I'm having problems with progress bar when using a big number in set range. For numbers below 50000 it works very well but for big numbers like 100.000 it doesn't work, it makes 2-3 rounds of animation
Code: int number= 50000; // 50k works well but if i put 100k it won't work (it will animate 2-3 rounds instead of complete one) progressbar1.SetRange(0, number); progressbar1.SetStep(1); for (int i = 0; i < number; ++i) { listcontrol1.InsertItem(i, _T("whatever")); progressbar1.StepIt(); }
I'm making a quiz game in c++. I've already completed it. But now I've thought of creating a profile and saving the progress for the user so when he enters his name the game continues frm where he had saved it.
According to my project instructions, I have to make a "validation on the delete button, that before a record can be deleted it will check to see if the count of "In-Progress" orders for that product is 0. If it is greater than zero, it should not allow this record to be deleted."
The professor said I have to: "As for getting the count, check your notes and book, specifically looking at SQL and the Aggregate functions. There is a function we talked about in class called "Count(OrderID)" and set the where clause to check for the productID.
What is the traditional way to monitor a blocking subroutine that is using a file stream as its input? That is, what is the traditional way to make a progress meter in the console?
Say I have a function that takes in a filestream and works with it. Suppose this file stream has a position and length property like in C# FileStream:
Code:
void sub (filestream file) { //read a bit of the stream, which advances stream cursor position //do something //repeat until all of file stream has been used up }
Presumably the function is chomping along the file stream as it is doing some calculations serially on the file stream.Because the function is blocking, there is no way to access the file streams position and length in this thread. So naturally it seems like the best thing to do to monitor the progress of that function is to make another thread and pass it the file stream object as a parameter, and in this separate thread, monitor the distance between filestream's position and length to determine how much of the file stream has been used up, and every second or so output the amount of file stream used onto the console.
We are making a program--but every time we input a value for scanf, the following for loop does not work and the program quits without displaying the for loop's function. We are not getting any errors.
I am trying to learn about parallel arrays and files. I believe that I wrote a program that properly writes the data of the arrays into a file, but I am not quite sure how to take the next step and make a second program by bringing in the file I created and reading the information of the file back into two arrays to display them.
