Requirements: Visual Studio 2015 or higher version with Windows SDK.

Step 1: Open Visual Studio 2015 and afterwards, go to File and go to New. Now, go to project.

File→New→Project.

Project

Step 2: We can choose Visual C# and select Windows. Afterwards, select the universal and next select the Blank App(Universal Windows).

Visual C#→Windows→universal→Blank App(Universal Windows).

Blank App

Step 3: Choose the target and minimum platform versions, which your Universal Windows Application will support.

application

Step 4: Open Mainpage.XAML, add the codes given below:

platform versions

The page is given below:

design

Step 5: Open Mainpage.cs file, add the code, given below:

  1. namespace calculator12
  2. {
  3. /// <summary>
  4. /// An empty page that can be used on its own or navigated to within a Frame.
  5. /// </summary>
  6. public sealed partial class MainPage : Page
  7. {
  8. string input = string.Empty;
  9. string x = string.Empty;
  10. string y = string.Empty;
  11. char operation;
  12. double result = 0.0;
  13. public MainPage()
  14. {
  15. this.InitializeComponent();
  16. }
  18. private void button1_Click(object sender, RoutedEventArgs e)
  19. {
  20. this.textBox.Text = " ";
  21. input += "1";
  22. this.textBox.Text += input;
  23. }
  25. private void button_Click(object sender, RoutedEventArgs e)
  26. {
  27. this.textBox.Text = " ";
  28. input += "2";
  29. this.textBox.Text += input;
  31. }
  33. private void button2_Click(object sender, RoutedEventArgs e)
  34. {
  35. this.textBox.Text = " ";
  36. input += "3";
  37. this.textBox.Text += input;
  39. }
  41. private void button3_Click(object sender, RoutedEventArgs e)
  42. {
  43. this.textBox.Text = " ";
  44. input += "4";
  45. this.textBox.Text += input;
  47. }
  49. private void button4_Click(object sender, RoutedEventArgs e)
  50. {
  51. this.textBox.Text = " ";
  52. input += "5";
  53. this.textBox.Text += input;
  55. }
  57. private void button5_Click(object sender, RoutedEventArgs e)
  58. {
  59. this.textBox.Text = " ";
  60. input += "6";
  61. this.textBox.Text += input;
  63. }
  65. private void button6_Click(object sender, RoutedEventArgs e)
  66. {
  67. this.textBox.Text = " ";
  68. input += "7";
  69. this.textBox.Text += input;
  71. }
  73. private void button7_Click(object sender, RoutedEventArgs e)
  74. {
  75. this.textBox.Text = " ";
  76. input += "8";
  77. this.textBox.Text += input;
  79. }
  81. private void button8_Click(object sender, RoutedEventArgs e)
  82. {
  83. this.textBox.Text = " ";
  84. input += "9";
  85. this.textBox.Text += input;
  87. }
  89. private void button9_Click(object sender, RoutedEventArgs e)
  90. {
  91. this.textBox.Text = " ";
  92. input += "0";
  93. this.textBox.Text += input;
  95. }
  97. private void button10_Click(object sender, RoutedEventArgs e)
  98. {
  99. x = input;
  100. operation = '+';
  101. input = string.Empty;
  102. }
  104. private void button11_Click(object sender, RoutedEventArgs e)
  105. {
  106. x = input;
  107. operation = '-';
  108. input = string.Empty;
  109. }
  111. private void button12_Click(object sender, RoutedEventArgs e)
  112. {
  113. x = input;
  114. operation = '*';
  115. input = string.Empty;
  116. }
  118. private void button13_Click(object sender, RoutedEventArgs e)
  119. {
  120. x = input;
  121. operation = '/';
  122. input = string.Empty;
  123. }
  125. private void button14_Click(object sender, RoutedEventArgs e)
  126. {
  128. this.textBox.Text = " ";
  129. input += ".";
  130. this.textBox.Text += input;
  131. }
  133. private void button16_Click(object sender, RoutedEventArgs e)
  134. {
  135. y = input;
  136. double num1, num2;
  138. double.TryParse(x, out num1);
  139. double.TryParse(y, out num2);
  141. if (operation == '+')
  142. {
  143. result = num1 + num2;
  144. textBox.Text = result.ToString();
  145. }
  146. else if (operation == '-')
  147. {
  148. result = num1 - num2;
  149. textBox.Text = result.ToString();
  150. }
  151. else if (operation == '*')
  152. {
  153. result = num1 * num2;
  154. textBox.Text = result.ToString();
  155. }
  156. else if (operation == '/')
  157. {
  158. if (num2 != 0)
  159. {
  160. result = num1 / num2;
  161. textBox.Text = result.ToString();
  162. }
  163. else
  164. {
  165. textBox.Text = "DIV/Zero!";
  166. }
  168. }
  169. }
  171. private void button15_Click(object sender, RoutedEventArgs e)
  172. {
  173. textBox.Text = "0";
  174. }
  175. }
  176. }
design

design

design

design

design

design

design

Step 6: You can run the project.

output

Step 7: You can see the output, given below:

output

output