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C# IP地址和DNS 网络(三)
1 Uri i = new Uri("http://www.baidu.com"); //可获取属性 2 3 UriBuilder u = new UriBuilder("http://www.baidu.com"); //可获取、设置属性 4 5 IPAddress ipAddress = IPAddress.Parse("192.168.31.34"); //ip地址转换 6 byte[] address = ipAddress.GetAddressBytes(); 7 string ipString = ipAddress.ToString(); 8 9 IPHostEntry host = Dns.Resolve("www.baidu.com"); //获取IPHostEntry对象 10 IPHostEntry whost = Dns.GetHostByAddress("192.168.31.114");
根据域名、地址，查询主机信息
Form
1 public partial class Form1 : Form 2 { 3 public Form1() 4 { 5 InitializeComponent(); 6 } 7 8 private void button1_Click(object sender, EventArgs e) 9 { 10 try 11 { 12 IPHostEntry iphost = Dns.GetHostEntry(textBox1.Text); 13 foreach(var ip in iphost.AddressList) 14 { 15 string ipaddress = ip.AddressFamily.ToString(); 16 listBox1.Items.Add(ipaddress); 17 listBox1.Items.Add(" " + ip.ToString()); 18 } 19 textBox2.Text = iphost.HostName; 20 21 22 } 23 catch (Exception ex) 24 { 25 MessageBox.Show("Unable to process the request because the following problem occurred:\n" + ex.Message + " Exception occurred"); 26 27 } 28 } 29 }
Designer
1 partial class Form1 2 { 3 /// <summary> 4 /// Required designer variable. 5 /// </summary> 6 private System.ComponentModel.IContainer components = null; 7 8 /// <summary> 9 /// Clean up any resources being used. 10 /// </summary> 11 /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param> 12 protected override void Dispose(bool disposing) 13 { 14 if (disposing && (components != null)) 15 { 16 components.Dispose(); 17 } 18 base.Dispose(disposing); 19 } 20 21 #region Windows Form Designer generated code 22 23 /// <summary> 24 /// Required method for Designer support - do not modify 25 /// the contents of this method with the code editor. 26 /// </summary> 27 private void InitializeComponent() 28 { 29 this.label1 = new System.Windows.Forms.Label(); 30 this.button1 = new System.Windows.Forms.Button(); 31 this.textBox1 = new System.Windows.Forms.TextBox(); 32 this.textBox2 = new System.Windows.Forms.TextBox(); 33 this.label2 = new System.Windows.Forms.Label(); 34 this.label3 = new System.Windows.Forms.Label(); 35 this.listBox1 = new System.Windows.Forms.ListBox(); 36 this.SuspendLayout(); 37 // 38 // label1 39 // 40 this.label1.AutoSize = true; 41 this.label1.Location = new System.Drawing.Point(12, 18); 42 this.label1.Name = "label1"; 43 this.label1.Size = new System.Drawing.Size(281, 12); 44 this.label1.TabIndex = 0; 45 this.label1.Text = "Enter name to resolve and click Resolve button"; 46 // 47 // button1 48 // 49 this.button1.Location = new System.Drawing.Point(259, 30); 50 this.button1.Name = "button1"; 51 this.button1.Size = new System.Drawing.Size(75, 21); 52 this.button1.TabIndex = 1; 53 this.button1.Text = "Resolve"; 54 this.button1.UseVisualStyleBackColor = true; 55 this.button1.Click += new System.EventHandler(this.button1_Click); 56 // 57 // textBox1 58 // 59 this.textBox1.Location = new System.Drawing.Point(15, 33); 60 this.textBox1.Name = "textBox1"; 61 this.textBox1.Size = new System.Drawing.Size(228, 21); 62 this.textBox1.TabIndex = 2; 63 // 64 // textBox2 65 // 66 this.textBox2.Location = new System.Drawing.Point(15, 76); 67 this.textBox2.Name = "textBox2"; 68 this.textBox2.Size = new System.Drawing.Size(228, 21); 69 this.textBox2.TabIndex = 3; 70 // 71 // label2 72 // 73 this.label2.AutoSize = true; 74 this.label2.Location = new System.Drawing.Point(12, 61); 75 this.label2.Name = "label2"; 76 this.label2.Size = new System.Drawing.Size(53, 12); 77 this.label2.TabIndex = 4; 78 this.label2.Text = "HostName"; 79 // 80 // label3 81 // 82 this.label3.AutoSize = true; 83 this.label3.Location = new System.Drawing.Point(12, 108); 84 this.label3.Name = "label3"; 85 this.label3.Size = new System.Drawing.Size(77, 12); 86 this.label3.TabIndex = 5; 87 this.label3.Text = "IP Addresses"; 88 // 89 // listBox1 90 // 91 this.listBox1.FormattingEnabled = true; 92 this.listBox1.ItemHeight = 12; 93 this.listBox1.Location = new System.Drawing.Point(15, 123); 94 this.listBox1.Name = "listBox1"; 95 this.listBox1.Size = new System.Drawing.Size(217, 160); 96 this.listBox1.TabIndex = 6; 97 // 98 // Form1 99 // 100 this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); 101 this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; 102 this.ClientSize = new System.Drawing.Size(346, 333); 103 this.Controls.Add(this.listBox1); 104 this.Controls.Add(this.label3); 105 this.Controls.Add(this.label2); 106 this.Controls.Add(this.textBox2); 107 this.Controls.Add(this.textBox1); 108 this.Controls.Add(this.button1); 109 this.Controls.Add(this.label1); 110 this.Name = "Form1"; 111 this.Text = "Form1"; 112 this.ResumeLayout(false); 113 this.PerformLayout(); 114 115 } 116 117 #endregion 118 119 private System.Windows.Forms.Label label1; 120 private System.Windows.Forms.Button button1; 121 private System.Windows.Forms.TextBox textBox1; 122 private System.Windows.Forms.TextBox textBox2; 123 private System.Windows.Forms.Label label2; 124 private System.Windows.Forms.Label label3; 125 private System.Windows.Forms.ListBox listBox1; 126 }
C# IP地址和DNS 网络(三)
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