1 | using System;
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2 | using System.Diagnostics;
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3 | using System.IO;
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4 | using System.Runtime.Serialization;
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5 | using System.Runtime.Serialization.Formatters.Binary;
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6 | using System.Xml.Serialization;
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7 | using System.Xml;
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8 | using System.Windows.Forms;
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9 | namespace Netron.Diagramming.Core
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10 | {
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11 | /// <summary>
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12 | /// Utility class to binary (de)serialize a diagram (from) to file
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13 | /// </summary>
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14 | public static class BinarySerializer
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15 | {
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16 | #region Methods
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17 |
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18 | /// <summary>
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19 | /// Binary saves the diagram
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20 | /// </summary>
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21 | /// <param name="fileName">the file-path</param>
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22 | /// <param name="control">The control.</param>
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23 | /// <returns></returns>
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24 | public static bool SaveAs(string fileName, DiagramControlBase control)
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25 | {
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26 |
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27 | FileStream fs = new FileStream(fileName, FileMode.Create);
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28 |
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29 | GenericFormatter<BinaryFormatter> f = new GenericFormatter<BinaryFormatter>();
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30 |
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31 | try {
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32 | Document document = control.Document;
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33 |
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34 |
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35 | //Warning!: cleaning up, you need to unhook all events since
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36 | // unserializable classes hooked to events will give problems.
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37 | f.Serialize<Document>(fs, document);
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38 | return true;
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39 | }
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40 | catch (Exception exc) {
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41 | //site.OutputInfo("The graph was not saved, because some graph events were attached to non-serializable classes.\r\n This is a known issue and will be resolved in a later stadium.",OutputInfoLevels.Exception);
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42 | Trace.WriteLine(exc.Message, "BinarySerializer.SaveAs");
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43 |
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44 | //DumpInfo();
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45 | }
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46 | finally
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47 | {
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48 | fs.Close();
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49 | }
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50 | return false;
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51 | }
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52 | /// <summary>
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53 | /// Opens the binary-saved diagram
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54 | /// </summary>
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55 | /// <param name="fileName">Name of the file.</param>
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56 | /// <param name="control">The control.</param>
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57 | public static bool Open (string fileName, DiagramControlBase control)
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58 | {
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59 | FileStream fs=null;
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60 |
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61 | try
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62 | {
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63 | fs= File.OpenRead(fileName);
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64 | }
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65 | catch (System.IO.DirectoryNotFoundException exc)
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66 | {
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67 | System.Windows.Forms.MessageBox.Show(exc.Message);
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68 | }
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69 | catch(System.IO.FileLoadException exc)
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70 | {
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71 | System.Windows.Forms.MessageBox.Show(exc.Message);
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72 | }
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73 | catch (System.IO.FileNotFoundException exc)
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74 | {
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75 | System.Windows.Forms.MessageBox.Show(exc.Message);
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76 | }
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77 | catch(Exception exc)
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78 | {
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79 | throw new Exception("Non-CLS exception caught.", exc);
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80 | }
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81 | //donnot open anything if filestream is not there
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82 | if (fs==null)
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83 | {
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84 | return false;
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85 | }
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86 |
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87 | try
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88 | {
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89 |
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90 | GenericFormatter<BinaryFormatter> f = new GenericFormatter<BinaryFormatter>();
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91 | //one-line deserialization, no bits 'nd bytes necessary....C# is amazing...
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92 | Document document = f.Deserialize<Document>(fs);
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93 |
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94 | if(document == null)
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95 | throw new InconsistencyException("The deserialization return 'null'.");
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96 | //call the standard method at the control level to attach a new document
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97 | //In principle you could create a document programmatically and attach it this way as well.
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98 | control.AttachToDocument(document);
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99 | return true;
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100 | }
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101 | catch(SerializationException exc)
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102 | {
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103 | MessageBox.Show(exc.Message);
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104 | }
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105 | catch(System.Reflection.TargetInvocationException exc)
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106 | {
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107 | MessageBox.Show(exc.Message, "BinarySerializer.Open");
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108 | }
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109 | catch(Exception exc)
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110 | {
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111 | MessageBox.Show(exc.Message, "BinarySerializer.Open");
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112 | }
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113 | finally
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114 | {
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115 | if (fs != null)
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116 | {
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117 | fs.Close();
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118 | }
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119 | }
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120 | return false;
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121 | }
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122 |
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123 |
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124 | #endregion
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125 | }
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126 | }
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