Software Development Forum

Why an array of text boxes cannot be created in C# the same way as in VB.Net? In VB.Net I can do this, ant it works.

Hello Everyone ! I want to Create a program that will calculate and print to the screen a sales receipt. The user will enter in the number of sales items, the price for each item and the sales tax percentage. Can Anyone Help me Out? Thank You

Chaps, today I was reading about exception handling and although the book explains them in sufficient details there is something that I really struggle to understand. Ok, here's the example they analyze: // Fig. 11.2: DivideByZeroWithExceptionHandling.java // Handling ArithmeticExceptions and InputMismatchExceptions. import java.util.InputMismatchException; import java.util.Scanner; public class DivideByZeroWithExceptionHandling { // …

currently I have a class function: class MyClass{ static int E(int A,int B, int C){ //function code } }; //and I call it like this : MyClass::E(1,2,3); //what I would like to do is call it in this way: E(1,2,3); //my current macro definition is this #define E(a,b,c) Myclass::E((a),(b),(c)) how …

Hi I just started to learn Java and when i was reading through the tutorial for building a simple GUI. It says that parseDouble method is not localizable. I don't understand what it is refering to as this method is not localizable. Please explain to me.THANKS!!!!!!!!!!!! :D Code int tempFahr …

Hello good day. I am designing two JTables; one on top of the other. The first one has nine columns. And the second one has 8 columns (The first column spans the first columns of the topmost table). What I wish to do now is to make the bottom table …

#include<stdio.h> void main() { int n=5; if(n==5?printf("Hallo"):printf("Hai"),printf("Bye")); } The output of the above code is HalloBye..But I am not able to debug it..I know that ternary has precedence over comma operator but i am stuck at which operand will go with which operator..Can someone please help

Hello. I am wondering how EOFs are indicated to either the cstdio functions or the fstream functions. Mainly I am wondering how it differentiates it from data. For example, if EOF is a 2-byte code wouldn't this break the system by inserting a 'false' eof flag: for (int i=0; i<256; …

I've built an application that displays the contents of an access database in a datagrid and also a form which allows a user to add a new record to the database. When I tried to run the exe in the bin folder on another computer it displays an error when …

Hello, Before anything, I want to say that I will keep looking around, but im leaving this thread here to possible get faster answers and solutions. Well, I'm trying to save multiple texts from textboxes and comboboxes, and after saving the information to a file an item will be added …

Can some help me with my Default: It is printing the error message but at end of message is giving a decimal value for the char sign. How do I stop this from happening? #include <stdio.h> char sign; int x, y; int main() { printf("Choose:\n"); printf("a) Addition\n"); printf("b) Subtraction\n"); printf("c) …

I am trying to download a zip file from a server using the following code but it gives me a tmp.zip of size 1kB. What is the mistake in this program? try { URL url = new URL("http://www.nseindia.com/content/historical/DERIVATIVES/2013/JUN/fo18JUN2013bhav.csv.zip"); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("GET"); InputStream in = connection.getInputStream(); FileOutputStream out …

Hi everyone.. I have to ask this question even though it will look a little silly to some of you. If I have a plugin for some open source software then how to do Install it. I'm using FLTK and have found a pluging for it. Just the sourcecode and …

Currently I have something like this: class FileWritter{ ofstream file; public: FileWritter(string filename,A_Class a){//A_Class is class which has defined the >> and the << operators file.open(filename.c_str()); file<<a; } ~FileWritter(){ file.close(); } }; what I want is to have something like this: template <class AbstractClass> class FileWritter{ ofstream file; public: FileWritter(string …

Hey Guys! I've been working on a CLI. Basically I want to recreate the Command Prompt using more user friendly commands. The thing is, as I'm using a RTB the 'Return' Key won't produce a value but it will only skip a line. How can I fix this? Below is …

Hello, I am using Netbeans with JDK7. I was wondering how can I check which compiler is Netbeans is using to compile the program? Thanks

Hi guys, I need your help here. I need to develop a form which scans students ID from a barcode and using that ID i need to further operations. For that I have downloaded [B]CODE 39 BARCODE font[/B]. Now what have to do further ?? Barcode scanner will be available …

i want to traverse a checkedlistbox using for each loop for example :- if i want to see that a particular item name exist in checkedlistbox or not. so i think that i need to use for each loop but really don't know how to traverse checkedlistbox using for each …

I have to write a program that takes a two dimensional array of dice and sees the combinations the dice makes within 360000 rolls. I have my code to work, but what I'm completely stumped with is printing it in a matrix. I know you have to embedd 2 for …

In trying to teach myself about the properties of the textbox, I'm wondering what the propert "Lines" is all about. The value in the property says "String[]Array". When I click this, a box comes up that asks "Enter the strings in the collections (one per line)". Can someone explain to …

I have a datagridview that the user can change to various rows and columns (its a grid of squares) When the user presses a button, it generates a list of coordinates of all the squares that are black. That is obviously generated in order. I want it to be mixed …

The idea is to load an array of objects onto a JComboBox. I have a Class Tournament, which contains an array of Teams. I have serialized an intance 'a' of the Tournament class into a .dat file. try{ ObjectOutputStream oTourn = new ObjectOutputStream(new FileOutputStream(jTextField1.getText()+".dat")); oTourn.writeObject(a); } catch(Exception e){ JOptionPane.showMessageDialog(this, e.toString(), …

can someone please tell me how much time will take to learn java , i have already learnt c++ and looking forward to learning java

Chaps, I have just read about java interfaces and there is a nice exercise in my book that I would like to attempt, so I was wondering if you could help me to identify the best way to go about it. Here's the exercise: "Create 3 small classes unrelated by …

Hi I have a set of Checkboxes each with a Textbox next it to. I have the following code, which is meant to loop through each CheckBoxe and if checked if gets the text contained in the textbox, these are linked through the tag of the checkbox, i have used …

Hi all! I'm stuck somewhere. I have a table for Inventory (which contains the available amount of each food component) What I want to do: If I select a certain food (say salad) I want to be able to deduct the components (amount) of 'salad' from the inventory table. Consider …

I am trying to modify my shell sort algorithm to use Hibbard's increments rather than n/2. I know that Hibbard's increments are 2k - 1, but I can't figure out how to incorporate that into my algorithm. Any suggestions to help me move forward with this? I feel like I …

I write count the letters in a list, > ERROR: countvowels/2: Arguments are not sufficiently instantiated I got this error" why is that? this is the coding I used countvowels([],0). countvowels([H|T],Count1):-Count is Count1 + 1,countvowels(T,Count),Count1>1.

I have a JTable with two columns in my JFrame. The number of rows this table has should equal a number input in a JForm in a previous JFrame. I cannot find any rowCount mutator function (Using Netbeans), and upon further inspection, the rowCount property in the GUI design view …

I want to transate no to Letters ,and letters to no,as a Example when germantoenglish([e,t,th],Y).Y shoul be like below Y=[1,2,3] but I get answer as false............ trans(e,1). trans(t,2). trans(th,3). germantoenglish([S|H],[G|Ta]):-trans(H,Ta). englishtogerman([J|Ta],[L|H]):-trans(H,Ta). `

This is strange, I looked it up and by default C# should pass parameters by value but I've always had them get passed by pointer. ie [ICODE] public class foo { public foo() { derp = 123456; } public int derp; } public static void dontcare(foo z) { z.derp = …

I have been trying VERY hard on this one and I cannot figure it out (I get the logic-- but not how to apply it in a COMPUTER). Here it is (please read the whole thing before answering): This is C programming (not C++) I need to design a program …

Hi, I have two LINQ queries that produce two different results, but the fields, while having different names, are essentially the same. I am trying to union them together (although concat in this case should produce the same results), but I am getting an error. My thought is that I …

Good day folks, I've been wondering how can I open an excel file in vb.net. Can somebody help me? I always get this error below: > The RPC server is unavailable. (Exception from HRESULT: 0x800706BA) Thanks in advance

How to find the difference of two files and get a 3rd file with the newer information alone. for example: There are two files file1 and file2 **file1** apple mango pear **file2** apple mango pear cat and dog I need a file with **fileout** cat and dog how to achieve …

Can anybody explain why this is not working.Can someone help me. fib(0, 0). fib(1, 1). fib(N, NF) :- N>=0, fib(N-1, AF), fib(N-2, BF), NF is AF + BF. .

In java this is how a DerivedClass can implement it's BaseClass's constructor. public DerivedClass extends BaseClass { //some properties public DerivedClass(param) { super(param); } } I have learnt C-Sharp's *base()* does the similar thing, but when I replace *super(param)* with *base(param)*, it does not gives what I'm expecting. How can …

Is it possible to have a auto-tracking event or something similar to track the database when it changes? For an example: If the database gets a new insert value from another application that I currently have: then My other application will notice it and fetch that data instead of getting …

I'm having a heck of a time loading an image from the path where the program is being run. Dim image As New BitmapImage Dim imagePath As String = "keepass.png" image.BeginInit() image.UriSource = New Uri(imagePath, UriKind.Relative) image.EndInit() ProductImage.Source = image I can't seem to use a relative path to my …

So I have this linq code and I am trying to get it to look at the datbase and what it is doing is pulling back the last record put into the database. My asp page refreshes and displays the new information that was updated. What I want is to …

Not entirely sure what's happening. I've managed to narrow down the template where this error is occurring <xsl:template match="Application/Comment"> <xsl:copy> <xsl:choose> <xsl:when test="string($ImportXML/Application/Comment)"> <xsl:apply-templates select="$ImportXML/Application/Comment/text()"/> </xsl:when> <xsl:otherwise> <xsl:apply-templates select="."/> </xsl:otherwise> </xsl:choose> </xsl:copy> </xsl:template> $ImportXML/Application/Comment = "test". Essentially, I'm trying to update my document so that the XPath Application/Comment is now …

Guys! I would like to know if it was possible to create an assembler using python since it has excellent string handling features. Any Ideas how it could be done?

I have been working on a conversion project for last few days where I need to convert a Java library to C#. At one point I came to java's certain feature called [Exceptions Thrown by a Method](http://docs.oracle.com/javase/tutorial/essential/exceptions/declaring.html). Here is a little glimpse of it: public boolean isRequest() throws NullPointerException { …

i have a text document 'topics.txt': 1~cocoa 2~ 3~ 4~ 5~grain~wheat~corn~barley~oat~sorghum 6~veg-oil~linseed~lin-oil~soy-oil~sun-oil~soybean~oilseed~corn~sunseed~grain~sorghum~wheat 7~ 8~ 9~earn 10~acq and so on.. here the numbers correspond to the file names, i have about 20000 files. import os import re import sys sys.stdout=open('f1.txt','w') from collections import Counter from glob import glob def removegarbage(text): text=re.sub(r'\W+',' …

does any one experience this while using mdi the code is something like this using a as new form a.mdiparent = this a.showdialog() end using then when i tried to show the new form it will close automatically. why is that happening? thank you

Hello programmers! I am trying to return an array, made up of 7 members, all type ints via a pointer from a function. Here is a prototype of a function that does this: `int[7] colCountArray={0,0,0,0,0,0,0} //array saved in Board obj.` int* Board::accessColCount() { return &colCountArray; } However, my compiler dosnt …

I have 2 functions, one of which works and one of which doesn't. I do not understand this, because the only difference is that the second function puts in just the name of the variable, where the 1st function puts in the value. There is only one line to build …

I have a datatable with nth column. Now, I want to change the index of some columns. Need help

Could you please explain me what is a BufferedStream (what is a buffer and how it should be used?)? I have used a code that uses bufferedstream to write to a .txt file. I got the code while googling but don't know the theory behind how it works... please explain.

hello folks. i have saved the values of unique_ID.text textbox1.text textbox2.text textbox3.text textbox4.text textbox5.text textbox6.text in columns column_ID and column_1 to column_6 in a table table_1 in database db_1. Now I want to update some values. but for that i want to show the values of column_1 to column_6 in …