C#读取DXF文件

using System;

using System.Collections.Generic;

using https://www.360docs.net/doc/b514337231.html,ponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.IO;

using System.Collections;

namespace DXF

{

public partial class Form1 : Form

{

private FileStream fs;

private StreamReader sr;

private ArrayList LayerList = new ArrayList();

private ArrayList LineList = new ArrayList();

private ArrayList ArcList=new ArrayList();

private ArrayList EllipseList = new ArrayList();

private ArrayList LwopolylineList = new ArrayList();

private ArrayList SplineList=new ArrayList();

private string[] str = new string[2];

private int count;

private double leftx;

private double lefty;

private double rightx;

private double righty;

public Form1()

{

InitializeComponent();

}

private string[] ReadPair()

{

string code = sr.ReadLine().Trim();

string codedata = sr.ReadLine().Trim();

count += 2;

string[] result = new string[2] { code, codedata };

return result;

}

private void Read()

{

while (sr.Peek() != -1)

{

str = ReadPair();

if (str[1] == "SECTION")

{

str = ReadPair();

switch (str[1])

{

case"HEADER": ReadHeader();

break;

case"TABLES": ReadTable();

break;

case"ENTITIES": ReadEntities();

break;

}

}

}

sr.Close();

fs.Close();

btDraw.Enabled = true;

label1.Text = count.ToString();

count = 0;

}

private void ReadTable()

{

while (str[1] != "ENDSEC")

{

while (str[0] != "2" || str[1] != "LAYER") {

str = ReadPair();

}

while (str[0] != "0" || str[1] != "LAYER") {

str = ReadPair();

}

while (str[0] == "0" && str[1] == "LAYER") {

ReadLAYER();

}

while (str[1] != "ENDSEC")

{

str = ReadPair();

}

}

}

private void ReadLAYER()

{

LAYER newlayer = new LAYER();

while (str[1] != "ENDTAB")

{

str = ReadPair();

switch (str[0])

{

case"2": https://www.360docs.net/doc/b514337231.html, = str[1];

break;

case"62": newlayer.colornum = str[1];

break;

case"6": newlayer.lstyle = str[1];

break;

case"370": newlayer.lwidth = str[1];

break;

}

if (str[0] == "0" && str[1] == "LAYER") {

LayerList.Add(newlayer);

return;

}

}

LayerList.Add(newlayer);

}

private void ReadEntities()

{

while (str[1] != "ENDSEC")

{

switch (str[1])

{

case"LINE": ReadLine();

break;

case"ARC": ReadArc();

break;

case"CIRCLE": ReadArc();

break;

case"ELLIPSE": ReadEllipse();

break;

case"LWPOLYLINE": ReadLwpolyline();

break;

case"SPLINE": ReadSpline();

break;

default: str = ReadPair();

break;

}

}

}

private void ReadArc()

{

ARC newarc = new ARC();

while (str[1] != "ENDSEC")

{

str = ReadPair();

switch (str[0])

{

case"8": newarc.LName = str[1];

break;

case"10": newarc.CenterX = Double.Parse(str[1]);

break;

case"20": newarc.CenterY = Double.Parse(str[1]);

break;

case"40": newarc.Radiu = Double.Parse(str[1]);

break;

case"50": newarc.SAngle = Double.Parse(str[1]);

break;

case"51": newarc.EAngle = Double.Parse(str[1]);

break;

case"370": newarc.lwidth = str[1];

break;

case"0": ArcList.Add(newarc);

return;

}

}

}

private void ReadLine()

{

LINE newline = new LINE();

while (str[1] != "ENDSEC")

{

str = ReadPair();

switch (str[0])

{

case"8": newline.LName = str[1];

break;

case"10": newline.StartX = Double.Parse(str[1]);

break;

case"20": newline.StartY = Double.Parse(str[1]);

break;

case"11": newline.EndX = Double.Parse(str[1]);

break;

case"21": newline.EndY = Double.Parse(str[1]);

break;

case"62": newline.colornum = str[1];

break;

case"370": newline.lwidth = str[1];

break;

case"0": LineList.Add(newline);

return;

}

}

}

private void ReadEllipse()

{

ELLIPSE newellipse = new ELLIPSE();

while (str[1] != "ENDSEC")

{

str = ReadPair();

switch (str[0])

{