.Net/C#读取CAD软件dwg数据表实体

使用ACadSharp库读取CAD软件dwg数据表实体

文末附ACadSharp.dll库文件及源码

CadDocReader

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
using ACadSharp;
using ACadSharp.Entities;
using ACadSharp.IO;
using CSMath;
using System.Text.RegularExpressions;

namespace NCad.Toolkits
{
    internal class CadDocReader
    {
        public CadDocReader(string filePath)
        {
            this.FilePath = filePath;
        }

        public string FilePath { get; private set; }

        public void ReadTable()
        {
            string filePath = this.FilePath;
            if (!File.Exists(filePath))
            {
                throw new FileNotFoundException(filePath);
            }
            CadDocument cadDocument = LoadCadDocument(filePath);
            foreach (var blockRecord in cadDocument.BlockRecords)
            {
                // 过滤非表实体
                if (!blockRecord.Name.StartsWith("*T"))
                {
                    continue;
                }
                if (blockRecord.Entities.Count < 1)
                {
                    continue;
                }
                for (int i = 0; i < blockRecord.Entities.Count; ++i)
                {
                    Entity entity = blockRecord.Entities[i];
                    if (entity.ObjectName.EndsWith("TEXT"))
                    {
                        MText mText = entity as MText;
                        // 实体文本内容
                        string entityText;
                        // 锚点
                        XYZ insertPoint;
                        if (mText == null)
                        {
                            TextEntity textEntity = entity as TextEntity;
                            entityText = textEntity.Value;
                            insertPoint = textEntity.InsertPoint;
                        }
                        else
                        {
                            entityText = mText.Value;
                            insertPoint = mText.InsertPoint;
                        }
                        // 移除文本字体样式字符
                        if (!string.IsNullOrEmpty(entityText))
                        {
                            string pattern = @"\\f.*?;";
                            entityText = Regex.Replace(entityText, pattern, string.Empty).TrimStart('{').TrimEnd('}');
                        }
                        Console.Write(entityText);
                        Console.Write("\t");
                    }
                }
                Console.WriteLine();
                Console.WriteLine();
            }
        }

        /// <summary>
        /// 加载CAD文档
        /// </summary>
        /// <param name="filePath">文件路径</param>
        /// <returns>CAD文档</returns>
        /// <exception cref="NotSupportedException">文件类型不支持异常</exception>
        private CadDocument LoadCadDocument(string filePath)
        {
            string extension = Path.GetExtension(filePath);
            CadDocument cadDocument = null;
            if (extension.Equals(".dwg", StringComparison.OrdinalIgnoreCase))
            {
                DwgReader dwgReader = null;
                try
                {
                    dwgReader = new DwgReader(filePath);
                    cadDocument = dwgReader.Read();
                }
                catch
                {
                    throw;
                }
                finally
                {
                    dwgReader?.Dispose();
                }
            }
            else if (extension.Equals(".dxf", StringComparison.OrdinalIgnoreCase))
            {
                DxfReader dxfReader = null;
                try
                {
                    dxfReader = new DxfReader(filePath);
                    cadDocument = dxfReader.Read();
                }
                catch
                {
                    throw;
                }
                finally
                {
                    dxfReader?.Dispose();
                }
            }
            else
            {
                throw new NotSupportedException($"文件：{filePath}，不支持类型：{extension}");
            }
            return cadDocument;
        }
    }
}

调用代码

1
2
3
string dwgFile = "D:\\admin\\Desktop\\测试图\\01-平面图.dwg";
CadDocReader cadDocReader = new CadDocReader(dwgFile);
cadDocReader.ReadTable();

测试输出

1
用地信息列表    类型    权属单位        地块面积（㎡）  拆迁/临迁房屋面积（㎡） 征地    AAAAAAA 5674.3934       0.0000  征地    BBBBBBB 5297.4953       0.0000  借地    CCCCCCCC        92314.0540      0.0000  拆迁    DDDDDDD 2497.0416      23213213.6568    临迁    EEEEEEE 1456.0170       343423434.5650  临迁    FFFFFFF 494.0636        453535.7878     临迁   GGGGGGG  494.0468        567676.6760     临迁    HHHHHHH 558.6505        645546.8780     临迁    IIIIIII 682.7144       3432424.8787     临迁    JJJJJJJ 682.7144        5676767.4342    临迁    KKKKKKK 682.7144        2324324.67868

用地信息列表

类型 权属单位 地块面积（㎡） 拆迁/临迁房屋面积（㎡）
征地 AAAAAAA 5674.3934 0.0000
征地 BBBBBBB 5297.4953 0.0000
借地 CCCCCCCC 92314.0540 0.0000
拆迁 DDDDDDD 2497.0416 23213213.6568
临迁 EEEEEEE 1456.0170 343423434.5650
临迁 FFFFFFF 494.0636 453535.7878
临迁 GGGGGGG 494.0468 567676.6760
临迁 HHHHHHH 558.6505 645546.8780
临迁 IIIIIII 682.7144 3432424.8787
临迁 JJJJJJJ 682.7144 5676767.4342
临迁 KKKKKKK 682.7144 2324324.67868

ACadSharp.dll库文件及源码

https://shaoshao.lanzouw.com/b0ny05i9a
密码:4ih4