I need to figure this problem out, I am using visual studio C#.
• Powers - Write an application that displays a tables of squares and cubes of an integer from 1 to an upper limit. The user should enter the upper limit and press the calculate button. The application should then display the number, the square of the number and the cube of the number in a list box. The list box should also contain column headings. If the user presses the button without entering a value the application should "degrade gracefully".
To solve this problem using Visual Studio C#, you can follow these steps:
1. Open Visual Studio and create a new C# Windows Forms Application project.
2. Design the user interface:
- Drag and drop a Label onto the form and set its text to "Upper Limit".
- Drag and drop a TextBox onto the form and set its name to "txtUpperLimit".
- Drag and drop a Button onto the form and set its text to "Calculate" and name to "btnCalculate".
- Drag and drop a ListBox onto the form and set its name to "lstResults".
- Right-click on the ListBox, choose "Properties", and set its "SelectionMode" property to "None".
3. Double-click on the "Calculate" button to generate the click event handler.
4. In the event handler, add the following code to calculate and display the squares and cubes:
```csharp
private void btnCalculate_Click(object sender, EventArgs e)
{
// Clear previous results
lstResults.Items.Clear();
// Get the upper limit value entered by the user
if (!int.TryParse(txtUpperLimit.Text, out int upperLimit))
{
// Degrade gracefully if user didn't enter a valid value
MessageBox.Show("Please enter a valid upper limit.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
// Display column headings
lstResults.Items.Add("Number\tSquare\tCube");
// Calculate and display squares and cubes for each number from 1 to the upper limit
for (int i = 1; i <= upperLimit; i++)
{
int square = i * i;
int cube = i * i * i;
lstResults.Items.Add($"{i}\t{square}\t{cube}");
}
}
```
5. Build and run the application to test it.
When the user enters an upper limit value and clicks the "Calculate" button, the application will calculate and display the squares and cubes of each integer from 1 to the upper limit in the ListBox. If the user clicks the button without entering a value, an error message will be displayed.