form1.cs

来自「微软（Microsoft）出版社C井练习文件及解答」· CS 代码 · 共 113 行

#region Using directives

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;

#endregion

namespace PrimitiveDataTypes
{
    partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void type_SelectedIndexChanged(object sender, System.EventArgs e)
        {
            switch (type.Text)
            {
                case "int":
                    showIntValue();
                    break;
                case "long":
                    showLongValue();
                    break;
                case "float":
                    showFloatValue();
                    break;
                case "double":
                    showDoubleValue();
                    break;
                case "decimal":
                    showDecimalValue();
                    break;
                case "string":
                    showStringValue();
                    break;
                case "char":
                    showCharValue();
                    break;
                case "bool":
                    showBoolValue();
                    break;
            }
        }

        private void showIntValue()
        {
            int var;
            var = 42;
            value.Text = "42";
        }

        private void showLongValue()
        {
            long var;
            var = 42L;
            value.Text = "42L";
        }

        private void showFloatValue()
        {
            float var;
            var = 0.42F;
            value.Text = "0.42F";
        }

        private void showDoubleValue()
        {
            double var;
            var = 0.42;
            value.Text = "0.42";
        }

        private void showDecimalValue()
        {
            decimal var;
            var = 0.42M;
            value.Text = "0.42M";
        }

        private void showStringValue()
        {
            string var;
            var = "42";
            value.Text = "\"42\"";
        }

        private void showCharValue()
        {
            char var;
            var = '4';
            value.Text = "'4'";
        }

        private void showBoolValue()
        {
            bool var;
            var = false;
            value.Text = "false";
        }

        private void quit_Click(object sender, System.EventArgs e)
        {
            Application.Exit();
        }
    }
}