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C# – Q&A


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A program that should perform the basic operations upon the data Listview save, update and cancel.When the program runs for the first time, the update and cancel button should not appear, only the save button to be visible.When the user double click the student name on the data Listview the update and cancel button should become visible and save button disappear to allow the user to carry out those operations on that data.No database is required on this program
In Progress...
Kathy, a software developer in FIT technologies, is assigned the task of optimizing the following
using System;
public class SwapNumber
void SwapNum(ref int a, ref int b)
int temp;
temp = a;
a = b;
b = temp;
static void Main(string[] args)
SwapNumber classobj = new SwapNumber();
int Number1, Number2;
Console.WriteLine("Enter the first number");
Number1 = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Enter the second number");
Number2 = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("The value of first number is {0}",
Console.WriteLine("The value of second number is {0}",
classobj.SwapNum(ref Number1,ref Number2);
Console.WriteLine("Now the value of first number after
swaping is {0}", Number1);
Console.WriteLine("Now the value of second number after
swapping is {0}", Number2);
Optimize the preceding code for Kathy and find out the errors (if any). What would be the output of
the preceding code, if the first number is 46 while the second number is 37?
In Progress...
I need proper syntax to get the price from my inventory table and use it in calculations. Here is the method I have so far but I don't know where to start with the calculation.
public void btnItemEnter_Click(object sender, EventArgs e)
/**This event handler will look up the item and get the description
* and the price to display into the lstItemsSold box. It will also
* keep a running total in the total labels while calculatin taxes**/
// double price;
//double tax = 0.07;
//double subtotal = price + tax;
String Item = txtItem.Text;

SqlConnection Sql = new SqlConnection("Data Source=. SAMANTHAWHITAKE\\MYSQL2012; Integrated Security=true");
string ItemNumber = "SELECT ItemNumber * FROM Inventory";
SqlCommand getRecord = new SqlCommand(ItemNumber, Sql);
SqlDataReader invRecord = getRecord.ExecuteReader();
if (Item.Equals(getRecord))
string LineItem = "SELECT ItemNumber, ItemName, ItemPrice * FROM Inventory WHERE ItemNumber = '" + Item + "'";
SqlCommand getLine = new SqlCommand(LineItem, Sql);
SqlDataReader invLine = getLine.ExecuteReader();
while (invLine.Read())


In Progress...
What is the diff between abstraction and abstract?I need an answer with an example

In Progress...
I am doing a program for school, and I need help.

So basically, this is a test program for science. There is the choice of Chemistry, Biology and Physics. When you click on them, you are taken to another form where the question is asked. When the user answer's the question right, I want him to be taken to another question without the use of another form. How can I accomplish this?
In Progress...
The application should be able to count the number of automobile parts sold every week
depending upon the number of new entries of parts in the application. If a part is not sold for
more than six months after its date of manufacture, the application should prompt a message,
"Urgent Sale Required"
In Progress...
The development team of SoftSols Inc. has revamped the software according to the requirements
of FlyHigh Airlines and is in the process of testing the software. While testing the software, the
team encounters the following issues:
The operations-related data of FlyHigh Airlines is stored in a central database. The software
fails to respond to user inputs, if there is a connectivity problem with the database. Add the code
snippet that the development team should use to ensure that the application shows a userfriendly
message, if such a situation arises in future.[5 Marks]
The application used to calculate the cost of carrying additional luggage results in erroneous
amount, if the weight of the luggage is a fractional number. Help the development team modify
the code snippet so that the cost of carrying additional luggage is calculated correctly. [5 Marks]
In Progress...
using console application, develop an interactive application that can assit a user to learn a multiple table program. the user can choose any number to start with,no database is required on this program and all errors should properly handled.
In Progress...
write two programs for encoding and decoding the text below:
“The quick brown fox jumps over the lazy dog”
In Progress...
I need to create a logon script that creates two registry keys with the following values for each PC (P+IPAddress) & (S+IPAddress), I created the following .reg file:


But I have entered these values my self, I need a script that creates a combined value (Letter + The last 3digits of the IP Address of the PC where this script runs).

I highly appreciate it if someone can help me on this.
In Progress...
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Very high satisfaction! A+. Aurthor had one line missing in code which was an easy fix.
Neil on September 2013
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