39 lines
1.0 KiB
C#
39 lines
1.0 KiB
C#
using System;
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using System.Windows.Forms;
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namespace LambdaPassingDemo
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{
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delegate void IntRefOperation(ref int x);
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public partial class Form1 : Form
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{
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public Form1()
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{
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InitializeComponent();
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}
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private void ArrayStepper(int[] array, IntRefOperation op)
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{
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for (int index = 0; index < array.Length; index++)
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{
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op(ref array[index]);
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}
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}
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private void demoButton_Click(object sender, EventArgs e)
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{
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// Create an int array with 4 elements.
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int[] numbers = { 10, 20, 30, 40 };
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// Display the contents of the array.
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ArrayStepper(numbers, (ref int x) => MessageBox.Show(x.ToString()));
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// Set each array element to 0.
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ArrayStepper(numbers, (ref int x) => x = 0);
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// Display the contents of the array.
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ArrayStepper(numbers, (ref int x) => MessageBox.Show(x.ToString()));
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}
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}
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}
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