I'm writing a tool that performs copying from USB devices to the local HD - I wonder if there is a function in C# to copy a file from one path to another?
Yes! The cunningly named:
File.Copy
File.Copy is probably OK for what you want to do, but it doesn't provide much flexibility (no cancellation, no progress tracking...).
If you need those features, you can look at the CopyFileEx API, which supports them. I wrote a .NET wrapper for CopyFileEx (and also MoveFileWithProgress), you can find it here (documentation comments are in French, sorry about that... hopefully that won't be an issue). Here's how you can use it:
void CopyFile(string source, string destination)
{
var copy = new FileCopyOperation(source, destination);
copy.ReplaceExisting = true;
copy.ProgressChanged += copy_ProgressChanged;
copy.Execute();
}
void copy_ProgressChanged(object sender, FileOperationProgressEventArgs e)
{
copyProgressBar.Value = e.PercentDone;
if (abortRequested)
e.Action = FileOperationProgressAction.Cancel;
}
Related
I have a textblock (ContentTextBlock) with AutomationProperties.LiveSettings="Assertive". I'm just testing and checking how useful this feature is. And... am disappointed so far.
private void Button_Click(object sender, RoutedEventArgs e)
{
ContentTextBlock.Text += " test";
var peer = UIElementAutomationPeer.FromElement(ContentTextBlock);
if(peer == null)
{
peer = UIElementAutomationPeer.CreatePeerForElement(ContentTextBlock);
peer.RaiseAutomationEvent(AutomationEvents.LiveRegionChanged);
}
peer.RaiseAutomationEvent(AutomationEvents.LiveRegionChanged);
}
When using Narrator, this works as advertised. Whenever clicking the button, Narrator announces the TextBlock text ("test" "test test" "test test test")... But when I use NVDA or JAWS, nothing happens, although the screenreader versions are relatively up-to-date. Did they really not add any support for live-regions or am I just missing an important point?
Whilst I didn't manage to get live regions to work, I found another workaround:
Tolk by Davy Kager
Tolk is a library which can, among oterrs
Detect which supported screen reader, if any, is running
Pass strings to the screen reader's speech engine and braille.
Also has support for SAPI
To include Tolk in your C# project, download it from the link above, then include tolk.cs (from src/dotnet) in your project, and place tolk.dll (it's found in bin) in the folder with your executable (or somewhere in the PATH variable). Make sure that the dll version matches your CPU target (x86/x64). Do the same for the dlls in the lib directory. Then you can use it according to the code found in the examples folder.
PS. Tolk works on Win 7 as well, so that's a bonus. The live-regions of WPF were only supported from Win 8 on.
I use an IAutoTamper2 to colorcode relevant requests/responses to my application based on url and other information.
This is very helpful for debugging. However when someone sends me a saved .saz file, I no longer see my helpful colorcodes. How can I apply the IAutoTamper2 logic when a file is imported.
I looked at the ISessionImporter interface but you have to start from scratch. Is there a way to inherit from the default importer and add my logic that occurs in the IAutoTamper2?
I've looked at all the documentation about extensions on the telerik website but couldn't find anything relevant. Any ideas?
I figured out how to do it. There is a OnLoadSAZ event that I can use to change loaded sessions.
This is my code:
public void OnLoad()
{
FiddlerApplication.OnLoadSAZ += HandleLoadSaz;
}
private void HandleLoadSaz(object sender, FiddlerApplication.ReadSAZEventArgs e)
{
FiddlerApplication.UI.lvSessions.BeginUpdate();
foreach (var session in e.arrSessions)
{
OnPeekAtResponseHeaders(session); //Run whatever function you use in IAutoTamper
session.RefreshUI();
}
FiddlerApplication.UI.lvSessions.EndUpdate();
}
I hope that helps someone else.
In my a c# program, I want to load a google map which is a html file stored in my local disk but it failed.It says that the application have something wrong with internet connection. Here is my screenshot and some code
private void 加载地图ToolStripMenuItem_Click(object sender, EventArgs e)
{
//webBrowser1.Navigate("D:/GoogleMap/GoogleMap.html");
webBrowser1.Navigate("D:/exercise/源代码/windows监控端/TestGoogleMapGps/TestGoogleMapGps/GoogleMap.html");
}
Well normally your local machine uses the backslash, not the forward slash, so try:
webBrowser1.Navigate(#"D:\GoogleMap\GoogleMap.html");
webBrowser1.Navigate(#"D:\exercise\源代码\windows监控端\TestGoogleMapGps\TestGoogleMapGps\GoogleMap.html");
Although, I'm not entirely sure that's the solution you're going for.
I'm an experienced MFC programmer of many years, who for the more recent years has been developing commercial apps in Objective C for Mac and iOS - I'm trying to get up to speed with .Net and C# (as I'm soon going to be required to convert one of my commercial apps from Mac to PC).
I've now worked my way through a couple of books and as an exercise to get more familiar with .Net (and C#) I've decided to have a go at converting one of my none commercial apps to .Net as a learning exercise and all is going well (interface is working, data structures all good) but I need to be able to play audio.
My Mac app generates audio from a series of mathematical formula - imagine a wave generator - not quite the same but similar. On the Mac I generate the audio as 16 bit signed raw audio, use Core Audio to setup audio output routing and then get a callback whenever a new buffer of audio is required for the audio routing (so I can generate the audio on the fly).
I need to do the same on the PC. Unfortunately I find MSDN documentation to be a case of "Can't see the wood for the trees" as there is such a vast amount of documentation. I can find classes that will let me load and play mp3/wav etc files, but I need to generate the audio realtime. Can anyone point me in the right direction to find something that will allow me to fill buffers on the fly as it plays them?
Thx
I have used this sample in several projects with good results. It is basically a .Net wrapper for Windows Waveform Audio API using P/Invoke.
Other choices:
NAudio
Sound Player class from .Net framework
I have created a class that can play audio given Stream derivate as an input. So if you are able to pack your sound-generator into the Stream compatible interface, it could be suitable for you.
How I did it - I used unmanaged waveOut* methods from old Windows multimedia API, and handled the playback from there.
Other options - that I am aware of - use waveOut directly, from this: http://windowsmedianet.sourceforge.net/ or write your own DirectShow source filter, but that might be too complicated, since it has to be written in c++.
If you are interested in giving my component a try, I can make it available to you at no charge, since I need it beta tested (I only used it in several of my projects).
EDIT:
Since there are 6 upvotes to the question, I am offering my component free of charge (if you find useful) here: http://dl.dropbox.com/u/10020780/SimpleAudioPlayer.zip
Maybe you can reflect on it :)
I use Audiere to accomplish this and find it works very well.
It's a C++ lib really, but there are a set of bindings available for C#.
For more info, see the question I asked.
You should have a look at FMOD which allows this kind of operation and much more. It is also cross platform which can be interested if you are also working on a mac.
Alvas.Audio has 3 audio players: Player
player.FileName = "123.mp3";
player.Play();
PlayerEx
public static void TestPlayerEx()
{
PlayerEx plex = new PlayerEx();
plex.Done += new PlayerEx.DoneEventHandler(plex_Done);
Mp3Reader mr = new Mp3Reader(File.OpenRead("in.mp3"));
IntPtr format = mr.ReadFormat();
byte[] data = mr.ReadData();
mr.Close();
plex.OpenPlayer(format);
plex.AddData(data);
plex.StartPlay();
}
static void plex_Done(object sender, DoneEventArgs e)
{
if (e.IsEndPlaying)
{
((PlayerEx)sender).ClosePlayer();
}
}
and RecordPlayer
public static void TestRecordPlayer()
{
RecordPlayer rp = new RecordPlayer();
rp.PropertyChanged += new PropertyChangedEventHandler(rp_PropertyChanged);
rp.Open(new Mp3Reader(File.OpenRead("in.mp3")));
rp.Play();
}
static void rp_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
switch (e.PropertyName)
{
case RecordPlayer.StateProperty:
RecordPlayer rp = ((RecordPlayer)sender);
if (rp.State == DeviceState.Stopped)
{
rp.Close();
}
break;
}
}
Im looking for a way to delete Windows restore points using C# perhaps by invoking WMI.
Any code snippet would be very helpful.
Touching on what Morten said you can use that API. WMI doesn't provide a method to delete a Restore Point as far as I can tell. The SRRemoveRestorePoint can remove a restore point, provided you have the sequence number. You can get that through WMI. Here is my code to Remove a restore point.
[DllImport("Srclient.dll")]
public static extern int SRRemoveRestorePoint(int index);
private void button1_Click(object sender, EventArgs e)
{
int SeqNum = 335;
int intReturn = SRRemoveRestorePoint(SeqNum);
}
I just threw in 335 since that was the farthest one back as I could find on my system. Its likely that the count starts at 1 and keeps incrementing. so it isn't as simple as just having an index like you would in an array.
As for getting the sequence numbers, I converted the code from Microsoft to C# which will give you that info. Be sure to add System.Management as a reference. Otherwise this code won't work right.
private void EnumRestorePoints()
{
System.Management.ManagementClass objClass = new System.Management.ManagementClass("\\\\.\\root\\default", "systemrestore", new System.Management.ObjectGetOptions());
System.Management.ManagementObjectCollection objCol = objClass.GetInstances();
StringBuilder Results = new StringBuilder();
foreach (System.Management.ManagementObject objItem in objCol)
{
Results.AppendLine((string)objItem["description"] + Convert.ToChar(9) + ((uint)objItem["sequencenumber"]).ToString());
}
MessageBox.Show(Results.ToString());
}
I tested this on my box (Vista by the way) and it worked without issue. Also have to be running as Admin, but I think you figured that.
While I know nothing about WMI, this resource might get you started. It does not directly touch your issue, but perhaps it can be useful somehow. Anyhow, it seems that the relevant Win32/COM function is SRRemoveRestorePoint. I hope this was of any use.
Alternatively, you can work with VBScript, if you're so inclined.