Display progress bar for wpf file copy

There are also some introductions, first look at the running effect

The xaml is as follows:

Xaml code

   

    <Window x: class = "wpfthreadtest. mainwindow"
    
Xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    
Xmlns: x = "http://schemas.microsoft.com/winfx/2006/xaml"
    
Title = "mainwindow" closed = "window_closed" loaded = "window_loaded" height = "209" width = "537" resizemode = "noresize">
    
& Lt; grid height = "186" & gt;
    
<Grid. columndefinitions>
    
<Columndefinition width = "132 *" type = "codeph" text = "/codeph"/>
    
<Columndefinition width = "236 *" type = "codeph" text = "/codeph"/>
    
<Columndefinition width = "147 *" type = "codeph" text = "/codeph"/>
    
</Grid. columndefinitions>
    
<Grid. rowdefinitions>
    
<Rowdefinition height = "auto"/>
    
<Rowdefinition height = "auto"/>
    
<Rowdefinition height = "auto"/>
    
<Rowdefinition height = "auto"/>
    
<Rowdefinition height = "auto"/>
    
</Grid. rowdefinitions>
    
<Textblock name = "textblock1" text = "Current Time" margin = "35 10" height = "auto" width = "auto"/>
    
<Textbox grid. column = "1" name = "displaytimebythread" height = "auto" margin = "0 10"/>
    
<Textblock grid. row = "1" name = "textblock2" margin = "35 10 0 10" text = "source file location"/>
    
<Textbox grid. column = "1" grid. row = "1" name = "srcfile" margin = "0 10"/>
    
<Textbox grid. column = "1" grid. row = "2" name = "savefilepath" margin = "0 10"/>
    
<Textblock grid. row = "2" name = "textblock3" text = "target file location" margin = "35 10 0 10"/>
    
<Button content = "... "grid. column = "2" grid. row = "1" name = "button1" margin = "10, 10, 66,10" click = "button#click"/>
    
<Button content = "... "grid. column = "2" grid. row = "2" name = "button2" margin = "10, 10, 66,10" height = "23" click = "button2_click"/>
    
<Button content = "start time thread" grid. column = "2" name = "button3" margin = "10, 10, 35, 10" height = "23" click = "button3_click"/>
    
<Button content = "start file copy thread" grid. column = "2" grid. row = "3" height = "29" horizontalalignment = "left" name = "button4" verticalignment = "top" width = "119" click = "button4_click"/>
    
<Textblock grid. row = "3" name = "copyflag" text = "start copying"/>
    
<Textblock name = "displaycopyinfo" text = "file copy in progress" grid. row = "3" grid. column = "1"/>
    
<Progressbar grid. column = "1" grid. row = "4" margin = "0 2" height = "8" name = "copyprogress"/>
    
</Grid>
    
</Window>
   

Backend cs

 

Background cs content

   

    1 namespace wpfthreadtest
    
2 {
    
3 /// <summary>
    
4 // interaction logic of mainwindow. xaml
    
5 /// </summary>
    
6 public partial class mainwindow: window
    
7 {
    
8 thread timethread;
    
9 thread copythread;
    
10 public mainwindow ()
    
11 {
    
12 initializecomponent ();
    
13 this. displaytimebythread. text = datetime. now. tolocaltime (). tostring ("yyyy mm dd hh: mm: ss ");;
    
14 timethread = new thread (new threadstart (dispatcherthread ));
    
15}
    
16 private void button3_click (object sender, routedeventargs e)
    
17 {
    
18 timethread. start ();
    
19}
    
20 public void dispatcherthread ()
    
21 {
    
22 // you can control ui updates through cyclic conditions.
    
23 while (true)
    
24 {
    
25 // thread priority, maximum timeout, method delegate (no parameter)
    
26 displaytimebythread. dispatcher. begininvoke (
    
27 dispatcherpriority. normal, new action (updatetime ));
    
28 thread. sleep (1000 );
    
29}
    
30}
    
31
    
32
    
33 private void updatetime ()
    
34 {
    
35 this. displaytimebythread. text = datetime. now. tolocaltime (). tostring ("yyyy mm dd hh: mm: ss ");
    
36}
    
37
    
38 private void window_closed (object sender, eventargs e)
    
39 {
    
40 // close all started threads
    
41 timethread. abort ();
    
42 copythread. abort ();
    
43 application. current. shutdown ();
    
44}
    
45
    
46 private void button#click (object sender, routedeventargs e)
    
47 {
    
48 /// set the full path of the file to be copied
    
49 openfiledialog openfile = new openfiledialog ();
    
50 openfile. addextension = true;
    
51 openfile. checkpathexists = true;
    
52 openfile. filter = "*. rar | *. rar | all files | *.*";
    
53 openfile. filterindex = 0;
    
54 openfile. multiselect = false;
    
55 bool? F = openfile. showdialog ();
    
56 if (f! = Null & f. value)
    
57 {
    
58 this. srcfile. text = openfile. filename;
    
59}
    
60}
    
61
    
62 private void button2_click (object sender, routedeventargs e)
    
63 {
    
64 // set the full path of the target file
    
65 savefiledialog savefile = new savefiledialog ();
    
66 savefile. addextension = true;
    
67 savefile. filter = "*. rar | *. rar | all files | *.*";
    
68 savefile. filterindex = 0;
    
69
    
70 bool? F = savefile. showdialog ();
    
71 if (f! = Null & f. value)
    
72 {
    
73 this. savefilepath. text = savefile. filename;
    
74}
    
75}
    
76
    
77 private void button4_click (object sender, routedeventargs e)
    
78 {
    
79 string filename = this. srcfile. text. trim ();
    
80 string destpath = this. savefilepath. text. trim ();
    
81 if (! File. exists (filename ))
    
82 {
    
83 messagebox. show ("the source file does not exist ");
    
84 return;
    
85}
    
86
    
87 // copy file and nodify ui that rate of SS of file copy
    
88 this. copyflag. text = "start copying... ";
    
89
    
90 // set the maximum value of the progress bar. This code is a bit depressing.
    
91 this. copyprogress. maximum = (new fileinfo (filename). length;
    
92
    
93 // Save the copied file information for transmission
    
94 copyfileinfo c = new copyfileinfo () {sourcepath = filename, destpath = destpath };
    
95 // the thread asynchronously calls the copy object
    
96 copythread = new thread (new parameterizedthreadstart (copyfile ));
    
97 copythread. start (c );
    
98
    
99 this. copyflag. text = "copied... ";
    
100
    
101
    
102}
    
103 /// <summary>
    
104 // copy the file delegate method
    
105 /// </summary>
    
106 /// <param name = "obj"> Copy file information </param>
    
107 private void copyfile (object obj)
    
108 {
    
109 copyfileinfo c = obj as copyfileinfo;
    
110 copyfile (c. sourcepath, c. destpath );
    
111}
    
112 /// <summary>
    
113 // copy the file
    
114 /// </summary>
    
115 /// <param name = "sourcepath"> </param>
    
116 /// <param name = "destpath"> </param>
    
117 private void copyfile (string sourcepath, string destpath)
    
118 {
    
119 fileinfo f = new fileinfo (sourcepath );
    
120 filestream fsr = f. openread ();
    
121 filestream fsw = file. create (destpath );
    
122 long filelength = f. length;
    
123 byte [] buffer = new byte [1024];
    
124 int n = 0;
    
125
    
126 while (true)
    
127 {
    
128 // Set the thread priority
    
129 // call the updatecopyprogress method asynchronously
    
130 // and pass two long-type parameters filelength and fsr. position
    
131 this. displaycopyinfo. dispatcher. begininvoke (dispatcherpriority. systemidle,
    
132 new action <long, long> (updatecopyprogress), filelength, fsr. position );
    
133
    
134 // read and write files
    
135 n = fsr. read (buffer, 0, 1024 );
    
136 if (n = 0)
    
137 {
    
138 break;
    
139}
    
140 fsw. write (buffer, 0, n );
    
141 fsw. flush ();
    
142 thread. sleep (1 );
    
143}
    
144 fsr. close ();
    
145 fsw. close ();
    
146}
    
147
    
148 private void updatecopyprogress (long filelength, long currentlength)
    
149 {
    
150 this. displaycopyinfo. text = string. format ("total size: {0}, copied: {1}", filelength, currentlength );
    
151 // refresh the progress bar
    
152 this. copyprogress. value = currentlength;
    
153}
    
154
    
155 private void window_loaded (object sender, routedeventargs e)
    
156 {
    
157
    
158}
    
159
    
160}
    
161 public class copyfileinfo
    
162 {
    
163 public string sourcepath {get; set ;}
    
164 public string destpath {get; set ;}
    
165}
    
166}