Software Development Forum

Well I guess it is my turn to ask a question, since most of the time I spend answering questions on DaniWeb. The Problem: DataViewGrid throws a "System.ArgumentException parameter is not valid..." when the dataset contains an SQL 2005 TimeStamp type column. The error occurs in System.Drawing.FromStream... da da da …

i am new to c++ and m having a problem in making a scientific calculator plsss help me i dun know how to make the power function work here is my program m working in visual studio 2005 ,c++ getiing this error error C2064: term does not evaluate to a …

**Task** Your task is to write a program that will draw graphs and output them as coloured image in the .ppm file format and display them using a suitable external image viewer (IrfanView). The program will use code generated sine waves, and harmonics of these, to calculate and display the …

I am new to C and C++, but I wrote this calculator in C++. It compiles okay on borland 5.5, and can do addition, subtraction, multiplication, and division of two numbers. If you type any characters except numbers, +,-,*,/,or e, there will be lots of beeping noises and error messages! …

I made this game equivalent to tictactoe but with a slight twist called find the X between two players using socket programming with Java. Don't know where I went wrong in trying to find the X but for some odd reason my count variable never updates allowing the victory message …

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Hello Everyone, I'm trying to create / edit a binary value within the windows registry so far I have this: Dim data As Byte() = New Byte() {&H48, 96} Microsoft.Win32.Registry.SetValue("hkey_local_machine\hardware\description\system\bios", "SystemProductName2", data, Microsoft.Win32.RegistryValueKind.Binary) However, I want to set a product name say "Acer Stuff" to the registry and what is …

Just trying to find out which of these five isprime functions is the fastest.

I have scoured Stack over flow and the Pandas documentation for a solution to this issue. I am attempting to recursively move through a directory and concatenate all of the headers and their respective row values. Below is what I have so far after much experimentation with other libraries: import …

Hello, I am new to Python. I am learning boxsizer. I want to put two buttons on my panel. One at top right corner and one at bottom right corner. How do I achieve this? Thanks

Hello, help me When you apply the save, an error occurs Dim c As Integer Dim val As String If cmbfeuille.Text = "" Then Exit Sub xlApp.ScreenUpdating = False xlApp.DisplayAlerts = False xlWorkBook = xlApp.Workbooks.Open(chemin) xlWorkSheet = CType(xlWorkBook.Worksheets(cmbfeuille.Text), Excel.Worksheet) For l As Integer = 1 To DataGridView1.RowCount - 1 For …

Wanted to let two forms work together. One form would be the input form and the main form would consume this data. I managed to succeed with the help of a few of my friends here at daniweb., who helped me setup a static form. Just posted a bit of …

Hi! We are a 4 member group for our thesis and we already have submitted 5 topic proposals yet nothing was accepted...and here are the topics: enrollment system, gadgets on track, employment resource system, subdivision technical entry pass Now, I need a help for new ideas that can be developed …

Hi, I am getting an error while making a vector. frame.h #include <wx/wx.h> class Frame : public wxPanel { public: Frame(wxPanel* parent, int xx, int yy); ~Frame(); private: int x; int y; } frame.cpp #include "frame.h" Frame::Frame(wxPanel* parent, int xx, int yy) :wxPanel(parent) { x = xx; y = yy; …

This is a program to get a student mark, as an input from user and print its grade based on the following criteria: if mark>=80 print 'A' if mark between 70-80 print 'B' if mark between 60-70 print 'C' if mark between 50-60 print 'D' if mark < 50 print …

first of all, I wanna say hi to u all as I'm new to daniweb. I'm a freshman in a college so I don't know much of c yet. So please be understanding in case that I will ask some n00b question later on :) So this is my problem...first …

Hello everyone! I'm sorry to bother you all, but I really need your help. I'm an economy and management student at uni, but somewhy I have to deal with programming. We got a task that looks like this: There's a 5x5 sized field where there are 8-8 disks for both …

Hello, I am trying to understand how to use C-style strings in C++. My goal is to store a C-style strings into a string type array. If I pass "This is a test" into word_token, it displays: This Is A test So from here I believe my setup is almost …

Hi, I hv vb.net applivcation. I have following CODE1 to save data & to prevent duplicate data entry into table. The following code I put in button save event. However I want to put this CODE2 in perticluar textbox e.g. here SpecimenNoTextBox. so that when the user enter duplicate SpecimenNo.it …

What happens is when the dialog comes up, if I press cancel it opens "c:\\text.txt" How do i make it so that if i press cancel the program reads nothing (it reads "c:\\text.txt" right now) SaveFileDialog [code] private void button38_Click(object sender, EventArgs e) { string l_text; string l_filename = "c:\\text.txt"; …

I have this small monitoring system which monitors customers on daily, weekly, and monthly payments. How do i sum all the numeric values in the "type of payment column"? How do i delete the current record selected by the user? IE, i select a name, then hit delete, deletes all …

I interpolated temperature data observed on an urban area formed by 12 locations. Now i would like to remove all interpolated values that are outside the shapefile layer. How can i do it? The shapefile links: https://www.dropbox.com/s/0u76k3yegvr09sx/LimiteAMG.shp?dl=0 https://www.dropbox.com/s/yxsmm3v2ey3ngsp/LimiteAMG.cpg?dl=0 https://www.dropbox.com/s/yx05n31dfkggbb6/LimiteAMG.dbf?dl=0 https://www.dropbox.com/s/a6nk0xczgjeen2d/LimiteAMG.prj?dl=0 https://www.dropbox.com/s/royw7s51n2f0a6x/LimiteAMG.qpj?dl=0 https://www.dropbox.com/s/7k44dcl1k5891qc/LimiteAMG.shx?dl=0 The Data is: Lat Lon T 0 20.8208 …

Public Class Form1 Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click 'TextBox1.Text = Token() If Button1.Enabled = True Then Label1.Text = Label1.Text + " A1 " If Button1.BackColor = Color.Yellow Then Button1.BackColor = Color.Red Else Button1.BackColor = Color.Yellow End If Else Label2.Text = "" Label2.Text = True End …

Hi! I want to learn programming. I'm 14 years old and very fond of computing. The only problem I face is *Which programming language should I learn?* or should I learn *Programming* i.e I learn the basics of programming so that I will be capable of learning any programming language. …

I have a function pointer to calculate addition, substraction, etc for 2 inputed arguments and 1 inputed operation. It works fine when the code return the indexed function pointer (with the inputed index) function pointer with both inputed arguments. but when I initialize a variable with as value this indexed …

HI everyone, _SBLOCK *allocateMemBlock(size_t size) [ _SBLOCK *block = (_SBLOCK*)sbrk(0); void *memadr = (void*)sbrk(0); void *allocate_mem = (void*)sbrk(BLOCK_SIZE + size); if(allocate_mem == (void*)-1) [ return NULL; ] else [ block->next = NULL; block->isfree = false; block->size = size; block->memoryAddress = memadr+BLOCK_SIZE; return block; ]

Hey guys, I'm in desparate need of assistance with my A-Level project. I'm writing a Banking system in Python and I'm being told by the idle log that a function hasn't been defined - even though that function is right above it! My Full Code is: #'http://effbot.org/tkinterbook/tkinter-index.htm' <<< Tkinter Tutorials …

Listed below is the original word jumble python program. According to the exercise i'm supposed to add hints see next thread on my modified program however it doesn't work correctly. [code=python] # Word Jumble # # The computer picks a random word then "jumbles" it # The player has to …

how to select an item in the combobox and then put item quantity in the textbox. and how to price the combobox items. Really need help .. Next week is my system defense.. Thank you

Create a Project name Banking which will have the following classes with the given instance variables and the methods Create a class Account with first name , last name, address , phone number, balance (instance variables) Withdrawal and deposit methods Create checking account class extending the account class, Having additional …