取路由器的路由表

Question

该怎么才能取到局域网路由器的路由表？
或者能扫描局域网的IP和计算机名，用c#该怎么办？

Answer 1

用API
    [DllImport("mpr.dll", CharSet=CharSet.Auto)]
    private static extern int WNetEnumResource(IntPtr hEnum, ref int lpcCount, IntPtr lpBuffer, ref int lpBufferSize);    [DllImport("mpr.dll", CharSet=CharSet.Auto)]
    private static extern int WNetOpenEnum(RESOURCE_SCOPE dwScope, RESOURCE_TYPE dwType, RESOURCE_USAGE dwUsage,
                                           [MarshalAs(UnmanagedType.AsAny)] [In] Object lpNetResource,
                                           out IntPtr lphEnum);    [DllImport("mpr.dll", CharSet=CharSet.Auto)]
    private static extern int WNetCloseEnum(IntPtr hEnum);参考http://www.wangchao.net.cn/bbsdetail_72646.html

Answer 2

 cxunxun的专栏
登录注册全站当前博客空间博客好友相册留言 c#获取所有局域网IP收藏
 using System; 
using System.Collections; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Web; 
using System.Web.SessionState; 
using System.Web.UI; 
using System.Web.UI.WebControls; 
using System.Web.UI.HtmlControls; 
using System.Data.OleDb; 
using System.Configuration; namespace ETable 
...{ 
/**//// <summary> 
/// ETable 的摘要说明。 
/// </summary> 
public class ETable : System.Web.UI.Page 
...{ 
protected System.Web.UI.HtmlControls.HtmlInputFile File1; 
protected System.Web.UI.WebControls.Label Label1; 
protected System.Web.UI.WebControls.Button Button1; 
protected System.Web.UI.WebControls.DataGrid DataGrid1; 
public Random rd; private void Page_Load(object sender, System.EventArgs e) 
...{ 
// 在此处放置用户代码以初始化页面 
} Web 窗体设计器生成的代码#region Web 窗体设计器生成的代码 
override protected void OnInit(EventArgs e) 
...{ 
// 
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。 
// 
InitializeComponent(); 
base.OnInit(e); 
} /**//// <summary> 
/// 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。 
/// </summary> 
private void InitializeComponent() 
...{ 
this.Button1.Click += new System.EventHandler(this.Button1_Click); 
this.Load += new System.EventHandler(this.Page_Load); } 
#endregion private void Button1_Click(object sender, System.EventArgs e) 
...{ 
if (File1.PostedFile!=null) 
...{ rd=new Random(1); 
string filename=DateTime.Now.Date.ToString("yyyymmdd")+DateTime.Now.ToLongTimeString().Replace(":","")+rd.Next(9999).ToString()+".xls"; 
File1.PostedFile.SaveAs(@Server.MapPath("file/")+filename); 
//Response.Write(File1.PostedFile.FileName.ToString()); 
//Response.Write("上传成功"); 
Label1.Text="文件名为"+filename; 
string conn = " Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source ="+Server.MapPath("file")+"/"+filename+";Extended Properties=Excel 8.0" ; 
OleDbConnection thisconnection=new OleDbConnection(conn); 
thisconnection.Open(); 
string Sql="select * from [Sheet1$]"; 
OleDbDataAdapter mycommand=new OleDbDataAdapter(Sql,thisconnection); 
DataSet ds=new DataSet(); 
mycommand.Fill(ds,"[Sheet1$]"); 
thisconnection.Close(); 
DataGrid1.DataSource=ds; 
DataGrid1.DataBind(); 
string conn1="User ID=sa;Data Source=127.0.0.1;Password=sa;Initial Catalog=index;Provider=SQLOLEDB.1;"; 
OleDbConnection thisconnection1=new OleDbConnection(conn1); 
thisconnection1.Open(); 
int count=ds.Tables["[Sheet1$]"].Rows.Count; for (int i=0;i<count;i++) 
...{ 
string id,id_1,id_2,id_3; 
id=ds.Tables["[Sheet1$]"].Rows[i]["id"].ToString(); 
id_1=ds.Tables["[Sheet1$]"].Rows[i]["id_1"].ToString(); 
id_2=ds.Tables["[Sheet1$]"].Rows[i]["id_2"].ToString(); 
id_3=ds.Tables["[Sheet1$]"].Rows[i]["id_3"].ToString(); 
string excelsql="insert into excel(id,id_1,id_2,id_3) values ('"+id+"','"+id_1+"','"+id_2+"','"+id_3+"') "; 
OleDbCommand mycommand1=new OleDbCommand(excelsql,thisconnection1); 
mycommand1.ExecuteNonQuery(); 
} 
Response.Write("更新成功"); 
thisconnection1.Close(); } 
} 
} 
}
发表于 @ 2008年04月03日 16:32:00|评论(loading...)|编辑 | 本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/cxunxun/archive/2008/04/03/2247723.aspx

Answer 3

CodeProject上面有个现成的：
http://www.codeproject.com/KB/IP/ListNetworkComputers.aspxusing System;
using System.Collections;
using System.Runtime.InteropServices;
using System.Security;public sealed class NetworkBrowser {
    #region Dll Imports    //declare the Netapi32 : NetServerEnum method import
    [DllImport("Netapi32", CharSet = CharSet.Auto, SetLastError = true)]
    [SuppressUnmanagedCodeSecurityAttribute]
    /// <summary>
            /// Netapi32.dll : The NetServerEnum function lists all servers
            /// of the specified type that are
            /// visible in a domain. For example, an 
            /// application can call NetServerEnum
            /// to list all domain controllers only
            /// or all SQL servers only.
            /// You can combine bit masks to list
            /// several types. For example, a value 
            /// of 0x00000003  combines the bit
            /// masks for SV_TYPE_WORKSTATION 
            /// (0x00000001) and SV_TYPE_SERVER (0x00000002)
            /// </summary>
            public static extern int NetServerEnum(
            string ServerNane, // must be null
            int dwLevel,
            ref IntPtr pBuf,
            int dwPrefMaxLen,
            out int dwEntriesRead,
            out int dwTotalEntries,
            int dwServerType,
            string domain, // null for login domain
            out int dwResumeHandle
            );    //declare the Netapi32 : NetApiBufferFree method import
    [DllImport("Netapi32", SetLastError = true)]
    [SuppressUnmanagedCodeSecurity]
    /// <summary>
            /// Netapi32.dll : The NetApiBufferFree function frees 
            /// the memory that the NetApiBufferAllocate function allocates. 
            /// Call NetApiBufferFree to free
            /// the memory that other network 
            /// management functions return.
            /// </summary>
            public static extern int NetApiBufferFree(
            IntPtr pBuf);    //create a _SERVER_INFO_100 STRUCTURE
    [StructLayout(LayoutKind.Sequential)]
    public struct _SERVER_INFO_100 {
        internal int sv100_platform_id;        [MarshalAs(UnmanagedType.LPWStr)]
        internal string sv100_name;
    }    #endregion    #region Public Constructor    /// <SUMMARY>
    /// Constructor, simply creates a new NetworkBrowser object
    /// </SUMMARY>
    public NetworkBrowser() {
    }    #endregion    /// <summary>
    /// Uses the DllImport : NetServerEnum
    /// with all its required parameters
    /// (see http://msdn.microsoft.com/library/default.asp?
    ///      url=/library/en-us/netmgmt/netmgmt/netserverenum.asp
    /// for full details or method signature) to
    /// retrieve a list of domain SV_TYPE_WORKSTATION
    /// and SV_TYPE_SERVER PC's
    /// </summary>
    /// <returns>Arraylist that represents
    /// all the SV_TYPE_WORKSTATION and SV_TYPE_SERVER
    /// PC's in the Domain</returns>
    public ArrayList getNetworkComputers() {
        //local fields
        ArrayList networkComputers = new ArrayList();
        const int MAX_PREFERRED_LENGTH = -1;
        int SV_TYPE_WORKSTATION = 1;
        int SV_TYPE_SERVER = 2;
        IntPtr buffer = IntPtr.Zero;
        IntPtr tmpBuffer = IntPtr.Zero;
        int entriesRead = 0;
        int totalEntries = 0;
        int resHandle = 0;
        int sizeofINFO = Marshal.SizeOf(typeof (_SERVER_INFO_100));        try {
            //call the DllImport : NetServerEnum 
            //with all its required parameters
            //see http://msdn.microsoft.com/library/
            //default.asp?url=/library/en-us/netmgmt/netmgmt/netserverenum.asp
            //for full details of method signature
            int ret = NetServerEnum(null, 100, ref buffer,
                                    MAX_PREFERRED_LENGTH,
                                    out entriesRead,
                                    out totalEntries, SV_TYPE_WORKSTATION |
                                                      SV_TYPE_SERVER, null, out
                                                                                    resHandle);
            //if the returned with a NERR_Success 
            //(C++ term), =0 for C#
            if (ret == 0) {
                //loop through all SV_TYPE_WORKSTATION 
                //and SV_TYPE_SERVER PC's
                for (int i = 0; i < totalEntries; i++) {
                    //get pointer to, Pointer to the 
                    //buffer that received the data from
                    //the call to NetServerEnum. 
                    //Must ensure to use correct size of 
                    //STRUCTURE to ensure correct 
                    //location in memory is pointed to
                    tmpBuffer = new IntPtr((int) buffer +
                                           (i * sizeofINFO));
                    //Have now got a pointer to the list 
                    //of SV_TYPE_WORKSTATION and 
                    //SV_TYPE_SERVER PC's, which is unmanaged memory
                    //Needs to Marshal data from an 
                    //unmanaged block of memory to a 
                    //managed object, again using 
                    //STRUCTURE to ensure the correct data
                    //is marshalled 
                    _SERVER_INFO_100 svrInfo = (_SERVER_INFO_100)
                                               Marshal.PtrToStructure(tmpBuffer,
                                                                      typeof (_SERVER_INFO_100));                    //add the PC names to the ArrayList
                    networkComputers.Add(svrInfo.sv100_name);
                }
            }
        } catch (Exception ex) {
            //                MessageBox.Show("Problem with acessing " + 
            //                    "network computers in NetworkBrowser " +
            //                    "\r\n\r\n\r\n" + ex.Message,
            //                    "Error", MessageBoxButtons.OK,
            //                    MessageBoxIcon.Error);
            return null;
        } finally {
            //The NetApiBufferFree function frees 
            //the memory that the 
            //NetApiBufferAllocate function allocates
            NetApiBufferFree(buffer);
        }
        //return entries found
        return networkComputers;
    }
}

Answer 4

codeproject上面什么都有，只是不会找。

Answer 5

去上面的网站搜一下upnp，可以得到路由列表。