实例介绍
【实例简介】
【实例截图】
【核心代码】
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using LumiSoft.Net.DNS;
using LumiSoft.Net.DNS.Client;
namespace DnsQuery
{
/// <summary>
/// Main application window.
/// </summary>
public class frm_Main : System.Windows.Forms.Form
{
private System.Windows.Forms.Button m_pQuery;
private System.Windows.Forms.ComboBox m_pQType;
private System.Windows.Forms.TextBox m_pQName;
private System.Windows.Forms.TextBox m_pDnsServer;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.StatusBar statusBar1;
private System.Windows.Forms.StatusBarPanel statusBarPanel1;
private System.Windows.Forms.CheckBox m_pCacheResult;
private System.Windows.Forms.TextBox m_pResults;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
/// <summary>
/// Default constructor.
/// </summary>
public frm_Main()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
m_pQType.Items.Add("IPv4 host address (A)");
m_pQType.Items.Add("Name server (NS)");
m_pQType.Items.Add("Canonical name (CNAME)");
m_pQType.Items.Add("Start of authority (SOA)");
m_pQType.Items.Add("Domain name pointer (PTR)");
m_pQType.Items.Add("Domain name pointer (HINFO)");
m_pQType.Items.Add("Mail exchange (MX)");
m_pQType.Items.Add("Text entries (TXT)");
m_pQType.Items.Add("IPv6 host address (AAAA)");
m_pQType.Items.Add("Any record (ANY)");
m_pQType.SelectedIndex = 0;
}
#region method Dispose
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#endregion
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.m_pQuery = new System.Windows.Forms.Button();
this.m_pQType = new System.Windows.Forms.ComboBox();
this.m_pQName = new System.Windows.Forms.TextBox();
this.m_pDnsServer = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.statusBar1 = new System.Windows.Forms.StatusBar();
this.statusBarPanel1 = new System.Windows.Forms.StatusBarPanel();
this.m_pCacheResult = new System.Windows.Forms.CheckBox();
this.m_pResults = new System.Windows.Forms.TextBox();
((System.ComponentModel.ISupportInitialize)(this.statusBarPanel1)).BeginInit();
this.SuspendLayout();
//
// m_pQuery
//
this.m_pQuery.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.m_pQuery.Location = new System.Drawing.Point(440, 280);
this.m_pQuery.Name = "m_pQuery";
this.m_pQuery.Size = new System.Drawing.Size(64, 24);
this.m_pQuery.TabIndex = 0;
this.m_pQuery.Text = "Query";
this.m_pQuery.Click = new System.EventHandler(this.m_pQuery_Click);
//
// m_pQType
//
this.m_pQType.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.m_pQType.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.m_pQType.Location = new System.Drawing.Point(280, 280);
this.m_pQType.Name = "m_pQType";
this.m_pQType.Size = new System.Drawing.Size(152, 21);
this.m_pQType.TabIndex = 1;
//
// m_pQName
//
this.m_pQName.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.m_pQName.Location = new System.Drawing.Point(16, 280);
this.m_pQName.Name = "m_pQName";
this.m_pQName.Size = new System.Drawing.Size(256, 20);
this.m_pQName.TabIndex = 3;
this.m_pQName.Text = "";
//
// m_pDnsServer
//
this.m_pDnsServer.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
this.m_pDnsServer.Location = new System.Drawing.Point(80, 256);
this.m_pDnsServer.Name = "m_pDnsServer";
this.m_pDnsServer.Size = new System.Drawing.Size(112, 20);
this.m_pDnsServer.TabIndex = 4;
this.m_pDnsServer.Text = "194.126.115.18";
//
// label1
//
this.label1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
this.label1.Location = new System.Drawing.Point(16, 256);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(64, 16);
this.label1.TabIndex = 5;
this.label1.Text = "Dns server";
//
// statusBar1
//
this.statusBar1.Location = new System.Drawing.Point(0, 311);
this.statusBar1.Name = "statusBar1";
this.statusBar1.Panels.AddRange(new System.Windows.Forms.StatusBarPanel[] {
this.statusBarPanel1});
this.statusBar1.ShowPanels = true;
this.statusBar1.Size = new System.Drawing.Size(520, 22);
this.statusBar1.TabIndex = 6;
this.statusBar1.Text = "statusBar1";
//
// statusBarPanel1
//
this.statusBarPanel1.AutoSize = System.Windows.Forms.StatusBarPanelAutoSize.Spring;
this.statusBarPanel1.Text = "Server response:";
this.statusBarPanel1.Width = 504;
//
// m_pCacheResult
//
this.m_pCacheResult.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
this.m_pCacheResult.Location = new System.Drawing.Point(200, 256);
this.m_pCacheResult.Name = "m_pCacheResult";
this.m_pCacheResult.Size = new System.Drawing.Size(152, 16);
this.m_pCacheResult.TabIndex = 7;
this.m_pCacheResult.Text = "Cache result";
//
// m_pResults
//
this.m_pResults.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.m_pResults.Location = new System.Drawing.Point(16, 8);
this.m_pResults.Multiline = true;
this.m_pResults.Name = "m_pResults";
this.m_pResults.Size = new System.Drawing.Size(488, 240);
this.m_pResults.TabIndex = 8;
this.m_pResults.Text = "";
//
// frm_Main
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(520, 333);
this.Controls.Add(this.m_pResults);
this.Controls.Add(this.m_pDnsServer);
this.Controls.Add(this.m_pQName);
this.Controls.Add(this.m_pCacheResult);
this.Controls.Add(this.statusBar1);
this.Controls.Add(this.label1);
this.Controls.Add(this.m_pQType);
this.Controls.Add(this.m_pQuery);
this.Name = "frm_Main";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "DnsQuery";
((System.ComponentModel.ISupportInitialize)(this.statusBarPanel1)).EndInit();
this.ResumeLayout(false);
}
#endregion
#region Events Handling
private void m_pQuery_Click(object sender, System.EventArgs e)
{
try{
m_pResults.Text = "";
Dns_Client.DnsServers = new string[]{m_pDnsServer.Text};
Dns_Client.UseDnsCache = m_pCacheResult.Checked;
using(Dns_Client dns = new Dns_Client()){
DnsServerResponse reponse = null;
if(m_pQType.SelectedIndex == 0){
reponse = dns.Query(m_pQName.Text,DNS_QType.A);
}
else if(m_pQType.SelectedIndex == 1){
reponse = dns.Query(m_pQName.Text,DNS_QType.NS);
}
else if(m_pQType.SelectedIndex == 2){
reponse = dns.Query(m_pQName.Text,DNS_QType.CNAME);
}
else if(m_pQType.SelectedIndex == 3){
reponse = dns.Query(m_pQName.Text,DNS_QType.SOA);
}
else if(m_pQType.SelectedIndex == 4){
reponse = dns.Query(m_pQName.Text,DNS_QType.PTR);
}
else if(m_pQType.SelectedIndex == 5){
reponse = dns.Query(m_pQName.Text,DNS_QType.HINFO);
}
else if(m_pQType.SelectedIndex == 6){
reponse = dns.Query(m_pQName.Text,DNS_QType.MX);
}
else if(m_pQType.SelectedIndex == 7){
reponse = dns.Query(m_pQName.Text,DNS_QType.TXT);
}
else if(m_pQType.SelectedIndex == 8){
reponse = dns.Query(m_pQName.Text,DNS_QType.AAAA);
}
else if(m_pQType.SelectedIndex == 9){
reponse = dns.Query(m_pQName.Text,DNS_QType.ANY);
}
if(!reponse.ConnectionOk){
statusBarPanel1.Text = "Server response: No connection to DNS server !";
return;
}
statusBarPanel1.Text = "Server response: " reponse.ResponseCode.ToString();
String text = "";
text = "//--- Answers ---------------------\r\n";
text = Records_To_String(reponse.Answers);
text = "//--- Authoritive Answers ---------------------\r\n";
text = Records_To_String(reponse.AuthoritiveAnswers);
text = "//--- Additional Answers ---------------------\r\n";
text = Records_To_String(reponse.AdditionalAnswers);
m_pResults.Text = text;
}
}
catch(Exception x){
System.Windows.Forms.MessageBox.Show(this,"Error:" x.Message,"Error:",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
}
#endregion
#region method Records_To_String
/// <summary>
/// Converts dns record to string.
/// </summary>
/// <param name="records"></param>
/// <returns></returns>
private String Records_To_String(DNS_rr[] records)
{
String text = "";
for(int i=0;i<records.Length;i ){
DNS_rr record = records[i];
text = "Record: " (i 1) ", Name=\"" record.Name "\", Type=" record.RecordType ", TTL=" record.TTL "\r\n";
text = " RDATA:\r\n";
if(record.RecordType == DNS_QType.A){
DNS_rr_A aRec = (DNS_rr_A)record;
text = " IP: " aRec.IP "\r\n";
}
else if(record.RecordType == DNS_QType.NS){
DNS_rr_NS nsRec = (DNS_rr_NS)record;
text = " Name Server: " nsRec.NameServer "\r\n";
}
else if(record.RecordType == DNS_QType.CNAME){
DNS_rr_CNAME cnameRec = (DNS_rr_CNAME)record;
text = " Alias: " cnameRec.Alias "\r\n";
}
else if(record.RecordType == DNS_QType.SOA){
DNS_rr_SOA soaRec = (DNS_rr_SOA)record;
text = " Name Server: " soaRec.NameServer "\r\n";
text = " Admin email: " soaRec.AdminEmail "\r\n";
}
else if(record.RecordType == DNS_QType.PTR){
DNS_rr_PTR ptrRec = (DNS_rr_PTR)record;
text = " Domain Name: " ptrRec.DomainName "\r\n";
}
else if(record.RecordType == DNS_QType.HINFO){
DNS_rr_HINFO hinfoRec = (DNS_rr_HINFO)record;
text = " OS: " hinfoRec.OS "\r\n";
text = " CPU: " hinfoRec.CPU "\r\n";
}
else if(record.RecordType == DNS_QType.MX){
DNS_rr_MX mxRec = (DNS_rr_MX)record;
text = " Pereference: " mxRec.Preference "\r\n";
text = " Mail Host: " mxRec.Host "\r\n";
}
else if(record.RecordType == DNS_QType.TXT){
DNS_rr_TXT txtRec = (DNS_rr_TXT)record;
text = " Text: " txtRec.Text "\r\n";
}
else if(record.RecordType == DNS_QType.AAAA){
DNS_rr_AAAA aRec = (DNS_rr_AAAA)record;
text = " IP: " aRec.IP "\r\n";
}
text = "\r\n";
}
return text;
}
#endregion
}
}
标签： dns
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