My problem is: how can I decompress a file after searching in a specific directory and sub folders for files with a specific extension.
please help
Line 146 --> error value cannot be null...
What I have tried:
1 <pre>using Microsoft.VisualBasic;
2 using Microsoft.VisualBasic.CompilerServices;
3 using System;
4 using System.Collections;
5 using System.Collections.Generic;
6 using System.ComponentModel;
7 using System.Data;
8 using System.Drawing;
9 using System.IO;
10 using System.IO.Compression;
11 using System.Linq;
12 using System.Runtime.CompilerServices;
13 using System.Text;
14 using System.Threading.Tasks;
15 using System.Windows.Forms;
16 using System.Xml;
17
18 namespace SD
19 {
20 public partial class Form1 : Form
21 {
22 public Form1()
23 {
24 InitializeComponent();
25 }
26 private string fileName;
27
28 private void Form1_Load(object sender, EventArgs e)
29 {
30
31 }
32
33 private void button1_Click(object sender, EventArgs e)
34 {
35 List<string> filenames = FindFiles(path.Text, exten.Text,check.Checked);
36 lstFiles.Items.Clear();
37 foreach (string filename in filenames)
38 {
39 lstFiles.Items.Add(filename);
40 }
41 }
42 private List<string> FindFiles(string dir_name, string patterns, bool search_subdirectories)
43 {
44 List<string> files = new List<string>();
45 string[] pattern_array = patterns.Split(';');
46 SearchOption search_option = SearchOption.AllDirectories;
47 foreach (string pattern in pattern_array)
48 {
49 foreach (string filename in Directory.GetFiles(dir_name, pattern, search_option))
50 {
51 if (!files.Contains(filename)) files.Add(filename);
52 }
53 }
54 label1.Text = files.Count.ToString();
55 files.Sort();
56 return files;
57 }
58
59 private void lstFiles_SelectedIndexChanged(object sender, EventArgs e)
60 {
61
62
63 }
64 private byte[] DecompressArray(byte[] content)
65 {
66 byte[] array;
67 int num;
68 using (MemoryStream memoryStream = new MemoryStream())
69 {
70 using (MemoryStream memoryStream1 = new MemoryStream(content))
71 {
72 using (GZipStream gZipStream = new GZipStream(memoryStream1, CompressionMode.Decompress))
73 {
74 byte[] numArray = new byte[1024];
75 do
76 {
77 num = gZipStream.Read(numArray, 0, (int)numArray.Length);
78 memoryStream.Write(numArray, 0, num);
79 }
80 while (num > 0);
81 }
82 }
83 array = memoryStream.ToArray();
84 }
85 return array;
86 }
87 private void UnzipDirectory(byte[] compressed, string outputPath)
88 {
89 IEnumerator enumerator = null;
90 IEnumerator enumerator1 = null;
91 if (!Directory.Exists(outputPath))
92 {
93 Directory.CreateDirectory(outputPath);
94 }
95 byte[] numArray = this.DecompressArray(compressed);
96 XmlDocument xmlDocument = new XmlDocument();
97 using (MemoryStream memoryStream = new MemoryStream(numArray))
98 {
99 xmlDocument.Load(memoryStream);
100 XmlNode firstChild = xmlDocument.FirstChild;
101 XmlNode xmlNodes = firstChild.FirstChild;
102 XmlNode nextSibling = firstChild.FirstChild.NextSibling;
103 try
104 {
105 enumerator = xmlNodes.ChildNodes.GetEnumerator();
106 while (enumerator.MoveNext())
107 {
108 object objectValue = RuntimeHelpers.GetObjectValue(enumerator.Current);
109 Directory.CreateDirectory(Path.Combine(outputPath, ((XmlNode)objectValue).Attributes.Item(0).Value));
110 }
111 }
112 finally
113 {
114 if (enumerator is IDisposable)
115 {
116 (enumerator as IDisposable).Dispose();
117 }
118 }
119 try
120 {
121 enumerator1 = nextSibling.ChildNodes.GetEnumerator();
122 while (enumerator1.MoveNext())
123 {
124 object obj = RuntimeHelpers.GetObjectValue(enumerator1.Current);
125 string str = Path.Combine(outputPath, ((XmlNode)obj).Attributes.Item(0).Value);
126 byte[] numArray1 = Convert.FromBase64String(((XmlNode)obj).InnerText);
127 File.WriteAllBytes(str, numArray1);
128 }
129 }
130 finally
131 {
132 if (enumerator1 is IDisposable)
133 {
134 (enumerator1 as IDisposable).Dispose();
135 }
136 }
137 }
138 }
139 private void lstFiles_DoubleClick(object sender, EventArgs e)
140 {
141
142 if (lstFiles.SelectedItem != null)
143 {
144
145 lstFiles.SelectedItem.ToString();
146 FileInfo fileInfo = new FileInfo(fileName);
147 try
148 {
149 if (File.Exists(fileName))
150 {
151 UnzipDirectory(File.ReadAllBytes(fileName), fileInfo.DirectoryName);
152 }
153 }
154 catch (Exception exception)
155 {
156 ProjectData.SetProjectError(exception);
157 Interaction.MsgBox("error", MsgBoxStyle.OkOnly, null);
158 ProjectData.ClearProjectError();
159 return;
160 }
161 Interaction.MsgBox("Complete", MsgBoxStyle.OkOnly, null);
162 }
163 }
164 }
165 }
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