C# :: Passing Additional Data To PropertyGrid / TypeConverter

May 29, 2014

The problem is that my DataSelector form, which is instigated from the PropertyGrid (by creating a UITypeEditor) has access to the property LinkedDataItem. However I want the DataSelector form, which currently lists all the DataItems in the DataManager, to only list DataItems which are supported by the CustomControl, therefore my DataSelector class also need the "SupportedTypes" property from the Custom Control. How can I do this?

I thought maybe I can use a type converter to reference the custom control itself, instead of just the LinkedDataItem, and just show it as the Linked DataItem, but I am unsure if this is the correct use or how to do this.

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C++ :: Add Additional Switch Statement That Allows For Passing Option For A Grade

Nov 21, 2014

Remove the break statements from each of the cases. What is the effect on the execution of the program?
Add an additional switch statement that allows for a Passing option for a grade of D or better. Use the sample run given below to model your output.

Sample Run: What grade did you earn in Programming I ? A YOU PASSED! an A - excellent work!

Rewrite the program LastFirst_lab44.cpp using if and else if statements rather than a switch statement. Did you use a trailing else in your new version? If so, what did it correspond to in the original program with the switch statement?

// This program illustrates the use of the Switch statement.
// The break statement causes all subsequent expressions to be executed as well, also known as "falling through".
// The trailing else statement acts just like the default section if none of the options from before work it gets "defaulted" to it.

#include <iostream>
using namespace std;
int main() {
char grade;
cout << "What grade did you earn in Programming I ?" << endl;

[code]....

how do you add an additional switch statement? i tried multiple times and i'm not sure if i don't understand braces enough but it didnt seem doable. also, I'm not sure what the teacher wants me to submit.

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C++ :: Additional Library Installation Options

Aug 5, 2013

I have been reading up, and it seems that all I need to do to finish up the installation of a library is to add in the search path for the library upon compile time.

Of course, I also read that directly copying the lib files can work too, but that may result in the over-writing of necessary files...

I read a more thorough document on mingw's linking processes and discovered that I could create a folder, install the library in that folder, and add the folder as a search path for mingw (so, basically, all i have to do is install all my libraries under that folder).

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C++ :: Cout Double Or Float Without Additional 0?

Jun 30, 2013

I m working calculating stuff in files, input and output data, etc..., the question is the following: I output double numbers with:

myFIle << fixed << setprecision(10) << double;

The problem i got is that when a numer is like 193123.2 it prints like 193123.200000..., so finally, ¿how can i print it with any additional 0 that i need?.

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C++ :: Adding Additional Functions To STL Vector Class

Jan 30, 2013

How would I add my own function to the vector class?

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Visual C++ :: Additional Include And Library Directories

Nov 19, 2012

For each project in a VS solution it's possible to stipulate per-project folders that get searched in addition to the folders that you've set globally for Visual Studio.

Which folders take priority? Do the project's folders get searched first? Or do the global folder get searched first? Or is it possible to select one set as having priority over the other?

(this is VS 2005 BTW)

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Visual C++ :: How To Configure Additional Include Headers

Jun 16, 2014

I want to include boost directory. What must be in the Additional Include Directories input?

I tried

C:C++boost_1_55_0libsaccumulatorsexample;$(BOOST_ROOT);%(AdditionalIncludeDirectories)

But I am still getting error "Cannot open include file: 'boost/libs/accumulators/lambda/lambda.hpp': No such file or directory" when I include

Code:
#include <boost/libs/accumulators/lambda/lambda.hpp>

The file is placed out side of boost directory of sure.

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C :: Passing Data From An Array And Using It In Another

Mar 18, 2014

I have been asked to write a lottery program in c using 5 separate functions 1 to take 6 numbers from user 2 to display the numbers 3 to sort the numbers 4 compare the chosen numbers to the winning numbers and 5 to list the frequency the user pick a number depending on how many times they play the game the problem im having is with the first 2 functions i can take the input and pass it to a display function but cannot get it to display the numbers here is what i have. The output from this is at the bottom .....

Code:
//function prototypes
int myNumbers();
void displayNums();
void sort();
void compare();

#include <stdio.h>
#define NUMS 6
#define WIN 7

[Code] .....

"Please enter your lucky numbers
1
2
3
4
5
6
Your numbers are 2286612"

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C# :: DLL Passing And Retrieving Data

Sep 18, 2013

I have a C# program going and want to be able to call the DLL and receive back the data requested through a pointer.Below is the DLL import within my C# code.

Code:

[DllImport("MyTest.dll")]
public static extern int ReadNetwork(Byte[] ROM_ID); Below is the code in the DLL Code: int _stdcall ReadNetwork(unsigned char* Array1)
{
ReadDevice(readBackArray);
for(i = 0; i < 20; i++)
{
Array1[i] = readBackArray[i];
}

[code]....

I've tried changing the return values in the DLL's ReadNetwork() function and that works ok, so I know I'm calling the DLL and it runs ok, but printing the result back is where I'm having the problem.

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C++ :: Fastest Way Of Passing Data To A Class

Apr 25, 2013

I'm currently building a new data structures that will be used in monte carlo generators (and so will be constructed several million times) and I'm wondering what's the best way (computer-speed-wise) to pass the data to the constructor. I am currently doing it using references and passing arrays as pointers like this:

Code:
class particle{
public:
particle(double *ar,int &id):IDup(id){
for (int i=0;i<5;++i)
Pup[i]=ar[i];
}
int IDup;
double Pup[5];
};

I'm assuming that since using references has no need to create a temporary memory slot it's more efficient .....

As for the arrays: is there a way for me to pass them as reference as well? (not using c++11), I'm using arrays instead of vectors as much as I can because I assume that vectors, being more advanced data structures, would take more time to create.

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C :: Passing Arrays To Other Data Has Pointers?

May 7, 2013

I am looking for an example of when passing arrays to other data that has pointers,

I understand the terms I would just like to see a small example of code that actually demonstrates this process.

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C++ :: Passing Data Through A Void Function

Mar 11, 2013

I am new to C++ ... My question is if I were to pass some data or values from the main() function through a void function (which main purpose is to display the data in a certain manner); how should one go about doing so?

For instance:

Code:
// example.cpp -- poorly written, just trying to learn
#include <iostream>
void format() {
using namespace std;
cout << "Time: " << min << hrs << endl;

[Code] .....

Obviously this is really poorly written, and confusing for the user. My main goal is to learn how to pass through values to a void function.

Also a bit off-topic, but is there a downside to place "using namespace std;" outside a function say if out of 100 functions only 10 of them use it? Would it make the program slower/unstable in any way or is this something one could do without any downsides?

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C++ :: Maintaining Additional Pointer To First Node In Doubly Linked List

Nov 30, 2014

Why would it be cumbersome to maintain an additional pointer to the first node in a doubly linked list?

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C++ :: Passing Data Between Threads Without Using Global Variables

Nov 6, 2013

I have a main thread and a worker thread. How do i pass data between them when both are already running without using global variables?

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C++ :: Passing Data Structures To Function Pointers And Get Values

Sep 26, 2014

typedef struct example_dt_struct {
int a;
float b;
char* c;
};
typedef void(*func)(example_dt_struct *s, int e, int f);
void f(func *n){}

how can i use example_dt_structure with my function pointer into f()

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C :: Store Data In Binary File Then Use It To Find Inverse Of Matrix Form Of Data

Dec 6, 2013

I need to find inverse of a matrix data in binary file should be used to form matrix.its not finding inverse correctly rest is working good.

Code:
#include <stdio.h>
void createbin();
void display();
void inverse();
int main()
{
createbin();
display();
inverse();

[Code] ....

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C++ :: Read Byte Of Char Data And Convert It Into Text String Of Binary Data That Represents Hex Value

Dec 26, 2013

I am writing a program where I need to read a byte of char data and convert it into a text string of binary data that represents the hex value...

i.e. The char byte is 0x42 so I need a string that has 01000010 in it. I've written the following subroutine....

------------- My Subroutine ----------------------------------------------------------------------
void charbytetostring(char input, char *output){
int i, remainder;
char BASE=0x2;
int DIGITS=8;
char digitsArray[3] = "01";

[Code] ....

When I submitted the byte 0x42 to the subroutine, the subroutine returned to the output variable 01000010... Life is good.

The next byte that came in was 0x91. When I submit this to the subroutine I get garbage out.

I am using a debugger and stepped through the subroutine a line at a time. When I feed it 0x42 I get what I expect for all variables at all points in the execution.

When I submit 0x91 When the line remainder = input % BASE; gets executed the remainder variable gets set to 0xFFFF (I expected 1). Also, when the next line gets executed..

input = input / BASE; I get C9 where I expected to get 48.

My question is, are there data limits on what can be used with the mod (%) operator? Or am I doing something more fundamentally incorrect?

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C++ :: Add Data To Text Files Which Are Required To Store 3D Scan Data

Jul 10, 2013

I have written the following code to add data to text files which are required to store 3D scan data (I have to calculate the y-coordinate). My code seems to work except that it stops working when I want to create more than ten text files i.e. the directory I am trying to store them in will not hold any more than ten text files. Code is shown below.

#include <string>
#include <locale>
#include <iomanip>
#include <iostream>
#include <fstream>
#include <sstream>
using namespace std;

[Code] ....

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C++ :: Data Input Into A Text File While Not Deleting Original Data

Apr 19, 2013

I want to input data into text file while not deleting the original data in the file and I use something as

ofstream writefile;
writefile.open("example1.txt");
if (writefile.is_open()) {
for(j=0; j<N; j++) {

[Code] ....

But this will delete the original data.

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C/C++ :: Display Data From File Into 2D Array - Print Closest Bmi From Data

Mar 28, 2015

#include <iostream>
#include <fstream>
using namespace std;
int main() {
int r = 0;
int c = 0;
int num[17][15] = { 0 };
[Code] ...

// Here is my code for displaying the data from the text file into a 2d array and height next to it, but I am not able to diaplay the height from 60 to 76 next to the row of the 2d array, as shown in the table below. This is my program:

Recently the health authorities have listed a new way to calculate the body mass index (BMI) of an individual.
Values of 20 – 24 are classified as normal, 25-29 as overweight, and 30-34 as heavy.

The table below is a portion of a typical BMI table.

BMI:202122232425262728293031323334
Height:
60102108113118123128133138143149154159164169174
61106111116122127132138143148153159164169175180
.
.
.

MY task is to write a program that does the following things:

1.Produce the table by reading in the data from bmi.txt (on Moodle) into a 2-D array.

2. Display the table neatly on the screen, with row and column headings. The BMI should go from 20 to 34. The height should go from 60 to 76 inches.

3. Prompt the use for their height (in inches) and their weight.

4. Make the program print the closest BMI.

If their weight is lower than the values on the table, use 20 as the BMI.
If their weight is higher than the values on the table, use 34 as the BMI.

5.Loop the program so the user can find more BMI’s.

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C# :: Data Source Does Not Support Server-side Data Paging

Apr 20, 2014

Been trying to configure the GridView to display ony 4 rows of data at a time. I thought it wasn't working because I forgot to set AllowPaging to True, but after I did that, I just get the error of

The data source does not support server-side data paging.

Source Error:
Line 66: titlesGridView.DataBind(); // displays query results

Here is my Books.aspx.cs code:

// Fig. 29.11: Books.aspx.cs
// Code-behind file for the password-protected Books page.
using System;
using System.Data.Entity;
using System.Linq;
namespace Bug2Bug.ProtectedContent {
public partial class Books : System.Web.UI.Page {

[Code] ....

Am I missing anything or doing something wrong thats not causing it to page & only display 4 titles at a time?

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C# :: Send Data To Generic Handler That Accepts JSON Data

Apr 26, 2014

I have a situation where I am accessing an ASP.NET Generic Handler to load data using JQuery. But since data loaded from Javascript is not visible to the search engine crawlers, I decided to load data from C# and then cache it for JQuery. My handler contains a lot of logic that I don't want to apply again on code behind. Here is my Handler code:

public void ProcessRequest(HttpContext context) {
JavascriptSerializer jsonSerializer = new JavascriptSerializer();
string jsonString = string.Empty;
context.Request.InputStream.Position = 0;
using (var inputStream = new System.IO.StreamReader(context.Request.InputStream))

[Code] ....

I can call the function : getUserControlMarkup() from C# but I will have to apply some URL based conditions while calling it. The contentType.typeOfContent is actually based on URL parameters.

If possible to send JSON data to this handler then how to do that. I am trying to access the handler like this:

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Common.host + "Handlers/SideContentLoader.ashx?typeOfContent=1&UCArgs=cdata");
HttpWebResponse response = (HttpWebResponse)request.GetResponse();

But its giving NullReferenceException in Handler code at line:

ContentType contentType = jsonSerializer.Deserialize<ContentType>(jsonString);

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Visual C++ :: Finding Value In Data File Closest To Calculated Data?

Jan 11, 2014

I'm reading from a file the middle column of data (Volts) where my test file "AP.txt" is opened by my program. Here is a segment of the data:

time Volts dV
49552 -66.20183 -0.01556807
49553 -67.76025 -0.01556495
49554 -69.30704 -0.01533247
49555 -70.81799 -0.0148486
49556 -72.26774 -0.0141133
49557 -73.63226 -0.01315276
49558 -74.89141 -0.01201764

Since the calculation I performed gives me -71.77 Volts, I need to match this value to the time that this occurs closest to using my program, and output the time that this occurs at.

Here is my program so far:
int main()
{
std::ifstream inFile;
inFile.open("AP.txt");
ofstream results_file ("maxvaluewithinput.txt");
float TimeAtdVMax = 0;
float VoltsAtdVmax = 0;

[Code]...

If you're curious, this program isn't for homework. It's part of the independent learning on C++ I'm doing for a Master's Thesis; the program will eventually model the APD90 of a ventricular action potential.

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Visual C++ :: Reading In Data And Displaying Out All Data In Linked List?

Feb 6, 2014

I am wanting to be able to add as many different instances of data, while the user has not stated 'n', but then it only ever writes back to the screen the input for the last set of data. Where as I want to display back to the screen all the data that has been entered.

Code:
#include <iostream>
#include <string>
/*Function Declaration*/
void createItem();
void returnItem();
//Items structure

[code]...

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C :: Create New Data Type Data Declared As Int

Feb 1, 2015

I'm trying to create a new data type Data declared as int. What comes up to my mind is to create a structure like

Code:

typedef struct Data {
int number;
} Data;

but when I need to use the data I need to go through the structure. Is this a good way to declare a new data type?

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C++ :: Loop To Read In Data And Check Data

Oct 8, 2013

struct receivers
{string fname, lname, team,;
int receptions, yards, TDs, longest,rec20, fumbles, yac, firstdown;
double, averagepergain, averageperrec
}

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