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The author:(作者)qqpublished in(发表于) 2014/7/11 9:22:00 C#教程:C#调用动态链接库
C#教程:C#调用动态链接库
C#调用动态链接库下面主要通过一个示例来讲解如何调用动态链接库。示例通过调用类库实现简单计算器程序通过引用类库,使用类库中的相关方法开发一个简单的计算器,运行效果如图1所示。图1 简单计算器(1)在菜单栏中选择“项目”/“添加引用”,弹出“添加引用”对话框,在“添加引用”对话框中选择“浏览”选项卡。(2)通过浏览找到上一节中创建的DLL类库,单击【确定】按钮,将类库添加到项目中,如图2和图3所示。图2 引用类库 图3 添加DLL类库成功类库添加成功后,在程序中就可以直接使用了。示例完整代码如下所示。using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using _4_01;namespace _4_02{public partial class Form1 : Form{public Form1(){InitializeComponent();}Operation oper = new Operation();private void button1_Click(object sender, EventArgs e){switch (comboBox1.Text){case "+":textBox3.Text = oper.Add(Convert.ToDouble(textBox1.Text), Convert.ToDouble(textBox2. ext)). oString();break;case "-":textBox3.Text = oper.Minus(Convert.ToDouble(textBox1.Text), Convert.ToDouble(textBox2.Text)). oString();break;case "*":textBox3.Text = oper.Multiplication(Convert.ToDouble(textBox1.Text), Convert.ToDouble (textBox2.Text)).ToString();break;case "/":textBox3.Text = oper.Division(Convert.ToDouble(textBox1.Text), Convert.ToDouble(textBox2.Text)).ToString();break;}}}}完整程序代码如下:★ ★★★★Form1.cs窗体代码文件完整程序代码★★★★★using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using _4_01;namespace _4_02{public partial class Form1 : Form{public Form1(){InitializeComponent();}Operation oper = new Operation();private void button1_Click(object sender, EventArgs e){switch (comboBox1.Text){case "+":textBox3.Text = oper.Add(Convert.ToDouble(textBox1.Text), Convert.ToDouble(textBox2.Text)).ToString();break;case "-":textBox3.Text = oper.Minus(Convert.ToDouble(textBox1.Text), Convert.ToDouble(textBox2.Text)).ToString();break;case "*":textBox3.Text = oper.Multiplication(Convert.ToDouble(textBox1.Text), Convert.ToDouble(textBox2.Text)).ToString();break;case "/":textBox3.Text = oper.Division(Convert.ToDouble(textBox1.Text), Convert.ToDouble(textBox2.Text)).ToString();break;}}}}★ ★★★★Form1.designer.cs窗体设计文件完整程序代码★★★★★namespace _4_02{partial class Form1{/// /// 必需的设计器变量。/// private System.ComponentModel.IContainer components = null;/// /// 清理所有正在使用的资源。/// /// 如果应释放托管资源,为 true;否则为 false。protected override void Dispose(bool disposing){if (disposing && (components != null)){components.Dispose();}base.Dispose(disposing);}#region Windows 窗体设计器生成的代码/// /// 设计器支持所需的方法 - 不要/// 使用代码编辑器修改此方法的内容。/// private void InitializeComponent(){this.textBox1 = new System.Windows.Forms.TextBox();
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