C#绘制网络拓扑图

在C# winform中通过visio绘制网络拓扑图，可以任意拖动、删除、获取节点信息，适合网络管理系统的应用。

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace Graphic
{
    class CommFnc
    {
        public static string FindFileToOpen（）
        {
            string RetVal FileName;
            RetVal = ““;
            OpenFileDialog OpenDir = new OpenFileDialog（）;
            OpenDir.InitialDirectory = “c:\\“;
            OpenDir.Filter = “Text Files|*.txt“;
            OpenDir.title = “Select a data file.“;
            if （OpenDir.ShowDialog（） == DialogResult.OK）
            {
                FileName = OpenDir.FileName;
                if （FileName != null）
                {
                    RetVal = FileName;
                }
            }
            return RetVal;
        }

        public static string AssignFileToSave（）
        {
            string RetVal FileName;
            RetVal = ““;
            SaveFileDialog SaveDir = new SaveFileDialog（）;
            SaveDir.InitialDirectory = “c:\\“;
            SaveDir.Filter = “Text Files|*.txt“;
            SaveDir.title = “Write a data file to disk.“;
            if （SaveDir.ShowDialog（） == DialogResult.OK）
            {
                FileName = SaveDir.FileName;
                if （FileName != null）
                {
                    RetVal = FileName;
                }
            }
            return RetVal;
        }

        public static void RowDecode（string pLine ref string pVariable ref string pValue）
        {
            int PosSep = 0;
            int PosEnd = pLine.Length;
            int nCar = 0;
            if （pLine == ““）
            {
                pVariable = “null“;
                pValue = “null“; ;
            }
            else
            {
                PosSep = pLine.IndexOf（“=“）;
                pVariable = pLine.Substring（0 PosSep）;
                PosEnd = pLine.LastIndexOf（“;“）;
                nCar = PosEnd - PosSep - 1;
                pValue = pLine.Substring（PosSep + 1 nCar）;
            }
        }

        public static double module（int x int y）
        {
            return System.Math.Sqrt（x*x + y*y）;
        }

        public static double distance（int x1 int y1 int x2 int y2）
        {
            return module（（x1 - x2）（y1 - y2））;
        }
    }

}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       2355  2008-01-25 12:28  C# Graphic\Graphic\Graphic\Common.cs

     文件       1676  2008-01-25 12:08  C# Graphic\Graphic\Graphic\FrmManageobject.cs

     文件       4865  2008-01-25 12:08  C# Graphic\Graphic\Graphic\FrmManageobject.Designer.cs

     文件       5814  2008-01-25 12:08  C# Graphic\Graphic\Graphic\FrmManageobject.resx

     文件      12387  2008-01-25 13:36  C# Graphic\Graphic\Graphic\FrmSchema.cs

     文件      11723  2008-01-24 12:51  C# Graphic\Graphic\Graphic\FrmSchema.Designer.cs

     文件     158278  2008-01-23 12:49  C# Graphic\Graphic\Graphic\FrmSchema.resx

     文件       3707  2008-01-24 12:53  C# Graphic\Graphic\Graphic\Graphic.csproj

     文件      14765  2008-01-25 16:30  C# Graphic\Graphic\Graphic\GScenario.cs

     文件      97254  2008-01-22 15:31  C# Graphic\Graphic\Graphic\Network.bmp

     文件        763  2008-01-25 16:35  C# Graphic\Graphic\Graphic\net_sample.txt

     文件        478  2008-01-24 12:51  C# Graphic\Graphic\Graphic\Program.cs

     文件       1262  2008-01-21 15:26  C# Graphic\Graphic\Graphic\Properties\AssemblyInfo.cs

     文件       2842  2008-01-21 15:26  C# Graphic\Graphic\Graphic\Properties\Resources.Designer.cs

     文件       5612  2008-01-21 15:26  C# Graphic\Graphic\Graphic\Properties\Resources.resx

     文件       1091  2008-01-21 15:26  C# Graphic\Graphic\Graphic\Properties\Settings.Designer.cs

     文件        249  2008-01-21 15:26  C# Graphic\Graphic\Graphic\Properties\Settings.settings

     文件      37482  2008-01-15 12:13  C# Graphic\Graphic\Graphic\Receiver.png

     文件      96714  2008-01-22 15:43  C# Graphic\Graphic\Graphic\Router.bmp

     文件      38508  2008-01-15 12:13  C# Graphic\Graphic\Graphic\Sender.png

     文件        914  2008-01-21 15:29  C# Graphic\Graphic\Graphic.sln

     文件     320197  2008-01-25 16:57  C# Graphic\Graphic Setup.exe

     目录          0  2008-01-25 17:00  C# Graphic\Graphic\Graphic\bin

     目录          0  2008-01-25 16:59  C# Graphic\Graphic\Graphic\Properties

     目录          0  2008-01-25 16:59  C# Graphic\Graphic\Graphic

     目录          0  2008-01-25 16:59  C# Graphic\Graphic

     目录          0  2014-01-22 19:09  C# Graphic

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