Add memory capability to your calculator. Add $2$ new components to the Calculator. Add a Label and another Button. Leave the Label blank, and put an $$M$$ on the Button. When the user clicks the $$M$$ button, the contents of the Answer TextBox should be copied to a memory variable. Also make it so that when the user moves the mouse over the label, the value in the memory variable will appear in this label, and then disappear, when the mouse moves away from the label. Also add one more button, an $$M$+$ button. When the user clicks this button, the contents of the Results box will be added to Memory. You will need to use a Global Variable to store this data.

Here is my code so far

namespace SimpleCalculator

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public partial class SimpleCalculator: UserControl

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public SimpleCalculator$()$

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InitializeComponent$()$;

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private void ExitButton$\_$Click$($object sender$,$ EventArgs e$)$

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Application.Exit$()$;

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private void additionRadioButton$\_$CheckedChanged$($object sender$,$ EventArgs e$)$

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$\}$

private void CalculateButton$\_$Click$($object sender$,$ EventArgs e$)$

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double num$1,$ num$2,$ result;

if $($double$.$TryParse$($number$1$Textbox.Text, out num$1)$ && double.TryParse$($number$2$Textbox.Text, out num$2))$

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if $($additionRadioButton$.$Checked$)$

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result $=$ num$1+$ num$2$;

$\}$

else if $($subtractionRadioButton$.$Checked$)$

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result $=$ num$1-$ num$2$;

$\}$

else if $($multiplicationRadioButton$.$Checked$)$

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result $=$ num$1*$ num$2$;

$\}$

else if $($divisionRadioButton$.$Checked$)$

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if $($num$2!=0)$

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result $=$ num$1/$ num$2$;

$\}$

else

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MessageBox.Show$("$Division by zero is not allowed."$)$;

return;

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else

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MessageBox.Show$("$Please select an operation."$)$;

return;

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resultTextbox.Text $=$ result.ToString$()$;

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else

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MessageBox.Show$("$Invalid input. Please enter valid numbers."$)$;

$\}$

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private void ClearButton$\_$Click$($object sender$,$ EventArgs e$)$

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number$1$Textbox.Clear$()$;

number$2$Textbox.Clear$()$;

resultTextbox.Clear$()$;

$\}$

private void clearToolStripMenuItem$\_$Click$($object sender$,$ EventArgs e$)$

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number$1$Textbox.Clear$()$;

number$2$Textbox.Clear$()$;

resultTextbox.Clear$()$;

$\}$

private void exitToolStripMenuItem$\_$Click$($object sender$,$ EventArgs e$)$

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Application.Exit$()$;

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private void colorToolStripMenuItem$\_$Click$($object sender$,$ EventArgs e$)$

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ColorDialog colorDialog $=$ new ColorDialog$()$;

if $($colorDialog$.$ShowDialog$()==$ DialogResult.OK$)$

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this.BackColor $=$ colorDialog.Color;

$\}$

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private void aboutToolStripMenuItem$\_$Click$($object sender$,$ EventArgs e$)$

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MessageBox.Show$("$This is an about textbox. Making this calculator was difficult but fun!"$)$;

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private void fileMenu$\_$ItemClicked$($object sender$,$ ToolStripItemClickedEventArgs e$)$

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private void ForLoopButton$\_$Click$($object sender$,$ EventArgs e$)$

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for $($int i $=0$; i $<10$; i$++)$

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Console.WriteLine$("$Go Falcons!"$)$;

$\}$

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private void WhileLoopButton$\_$Click$($object sender$,$ EventArgs e$)$

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int i $=0$;

while $($i $<10)$

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Console.WriteLine$("$Go Falcons!"$)$;

i$++$;

$\}$

$\}$

private void MButton$\_$Click$($object sender$,$ EventArgs e$)$

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private void memoryLabel$\_$MouseEnter$($object sender$,$ EventArgs e$)$

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private void memoryLabel$\_$MouseLeave$($object sender$,$ EventArgs e$)$

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private void MPlusButton$\_$Click$($object sender$,$ EventArgs e$)$

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private void SimpleCalculator$\_$Load$($object sender$,$ EventArgs e$)$

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private void memoryLabel$\_$Click$($object sender$,$ EventArgs e$)$

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$\}$

$\}$

$\}$