Develop Reference

How to save files in specific locations without showing SaveDialog's Prompt

I'm been wondering is there a way to save a file in specific's folder in C#?
The only method that I know is 'SaveFileDialog' but the problems is I want to save files
in folder without showing saveFilesDialog's Box.
saveFilesDialog's Box : is a box that prompts you to Click 'YES' or 'CANCEL'.
Code samples
-In form1
public Form1()
{
InitializeComponent();
}
private string Path =#"D:\Files"; //locaction i wanna stores all the files in
private int i = 0;
private button1_Click(object sender,EventArgs e)
{
i++;
SaveDialogFile save = new SaveDialogFile();
if(Save.
if (save.ShowDialog() != DialogResult.OK)return; //Prompt's Dialog will show
save.Filter = "File Text(*.txt)|*.txt";
save.InitialDirectory = Path;
save.FileName = "txt"+i.ToString();
//Goal : i want 'save.FileName' store in 'Path' without Click 'OK' or Show Prompt Dialog's box
}
Expect Result
[1]: https://i.stack.imgur.com/9JqWO.png
Anyone can help me? I kinda stuck rn :)
This is my full code it's hard to read but you'll get the point
public partial class convertMp3ToWav : Form
{
public convertMp3ToWav()
{
InitializeComponent();
}
BackgroundWorker bw;
string withoutEx;
List<string> song_lists = new List<string>();
private void button1_Click(object sender, EventArgs e)
{
bw = new BackgroundWorker();
bw.DoWork += (obj, ae) => newThread();
bw.RunWorkerAsync();
}
void newThread()
{
Thread th = new Thread
((ThreadStart)(() =>
{
file();
}));
th.SetApartmentState(ApartmentState.STA);
th.Start();
th.Join();
}
void file()
{
string path = #"D:\musics\wav";
Directory.CreateDirectory(path);
FolderBrowserDialog f = new FolderBrowserDialog();
f.ShowDialog();
string[] lists = Directory.GetFiles(f.SelectedPath, "*.*", SearchOption.AllDirectories);
foreach (string list in lists)
{
if (Path.GetExtension(list) == ".mp3")
{
string fn = Path.GetFullPath(list);
withoutEx = Path.GetFileNameWithoutExtension(fn);
song_lists.Add(fn);
Console.WriteLine(withoutEx);
SaveFileDialog save = new SaveFileDialog();
save.Filter = "Wav FIle (*.wav)|*.wav;";
//save.FileName = song_lists[0];
save.FileName = withoutEx;
save.InitialDirectory = path;
if (save.ShowDialog() == DialogResult.OK)
{
using (Mp3FileReader mp3 = new Mp3FileReader(fn))
{
using (WaveStream pcm = WaveFormatConversionStream.CreatePcmStream(mp3))
{
WaveFileWriter.CreateWaveFile(save.FileName, pcm);
}
}
}
}
}
}
}
this code's work pretty well!! but i need to click 'OK' everytime!!
so is there anyway to save file without click 'OK' everytime!!

Conceptually the only thing SaveFileDialog is doing, if you merely click OK when it shows, is changing the file extension*. Use Path.ChangeExtension instead
var pathToSaveWavTo = Path.ChangeExtension(pathToMp3, "wav");
The wav will be saved alongside the mp3. If you want to save it elsewhere, use Path.Combine to build a new path e.g.
pathToSaveWavTo = Path.Combine(#"c:\temp", Path.GetFileName(pathToSaveWavTo));
*I say this because giving it a filter of *.WAV and a filename xxx without the mp3 extension will cause it to give you a filename of xxx.wav when you only click OK, thus xxx.mp3 -> xxx.wav

Dragging files into rich textbox resutls icon created

I read and tried multiple examples in related postings.
No matter what, the problem remains:
When I drag file into the RichBox, I end up with file icon which I don't want and file name string which I do want.
If I drag 2 or more files, only 1st file icon comes, other files do not bring icons.
The question is: how not to get icon into Rich Box when I drag file into it?
private void RT1_DragDrop(object sender, DragEventArgs e)
{
string s="";
if(e.Data.GetDataPresent(DataFormats.FileDrop))
{
Array a = (Array)e.Data.GetData(DataFormats.FileDrop);
foreach (string s1 in a)
{
RT1.Text = RT1.Text + s1 + "\n";
this.Activate();
OpenFile(s1);
}
}
}
private void OpenFile(string sFile)
{
StreamReader StreamReader1 = new StreamReader(sFile);
RT2.Text = RT2.Text + "\n" + StreamReader1.ReadToEnd();
StreamReader1.Close();
}

How to delete the file after 30 seconds/ or delete the file once after the job is completed

I am working on a C# project and i need the file to deleted after 30 seconds. So once the file sent to the machine i need the software to count till 30 seconds and at same time show a splash form and once 30 seconds crossed close the splash screen and then delete the file.
I have added a splash screen called "image". So now what happens is, the data is only sent to the printer after the splash screen is closed. I need to multi thread the job. I mean the data should print in one side while the splash screen should show at the same time. Is there a way i can come out!!.. Please help me out.
So in my case i am copying the file to the bin/debug folder. then sending data to the machine simultaneously show the splash screen for 30 seconds and close the splash screen and then i need to delete the file..
codes:
private void button4_Click(object sender, EventArgs e)
{
//string filePath = image_print();
// MessageBox.Show(filePath, "path");
string s = image_print() + Print_image();
if (String.IsNullOrEmpty(s) || img_path.Text == "")
{
return;
}
else
{
//here its coming to the splash screen code, But data is transferred to the machine only after the splash screen is close :-(
this.Hide();
omg = new image();
omg.ShowDialog();
this.Show();
//splash screen closed and then data is transferred.. which i don't need.. i need simultaneous job to be done at the same time..
PrintFactory.sendTextToLPT1(s);
}
}
private string image_print()
{
OpenFileDialog ofd = new OpenFileDialog();
string path = "";
string full_path = "";
string filename_noext = "";
ofd.InitialDirectory = #"C:\ZTOOLS\FONTS";
ofd.Filter = "GRF files (*.grf)|*.grf";
ofd.FilterIndex = 2;
ofd.RestoreDirectory = true;
if (ofd.ShowDialog() == DialogResult.OK)
{
filename_noext = System.IO.Path.GetFileName(ofd.FileName);
path = Path.GetFullPath(ofd.FileName);
img_path.Text = filename_noext;
//MessageBox.Show(filename_noext, "Filename"); - - -> switching.grf
// MessageBox.Show(full_path, "path");
//move file from location to debug
string replacepath = #"\\bin\Debug";
string fileName = System.IO.Path.GetFileName(path);
string newpath = System.IO.Path.Combine(replacepath, fileName);
// string newpath = string.Empty;
if (!System.IO.File.Exists(filename_noext))
System.IO.File.Copy(path, newpath);
filename_noext = img_path.Text;
MessageBox.Show(filename_noext, "path");
}
if (string.IsNullOrEmpty(img_path.Text))
return "";//
StreamReader test2 = new StreamReader(img_path.Text);
string s = test2.ReadToEnd();
return s;
}
private string Print_image()
{
//some codes
return s;
}
In image form: I have the following codes
public partial class image : Form
{
string filePath;
public image()
{
InitializeComponent();
// this.filePath = FileToDeletePath;
System.Timers.Timer timer1 = new System.Timers.Timer();
timer1.Interval = 30000;
timer1.Elapsed += timer1_Elapsed;
timer1.Start();
}
private void image_Load(object sender, EventArgs e)
{
}
void timer1_Elapsed(object sender, ElapsedEventArgs e)
{
//delete the file using "filePath"
string Filename = img_path.Text; // here i cannot pass the old string file name with extension to this form.. Any ways please help me out
if (string.IsNullOrEmpty(Filename))
return;
if (Filename.ToCharArray().Intersect(Path.GetInvalidFileNameChars()).Any())
return;
File.Delete(Path.Combine(#"\\bin\Debug", Filename));
}
}

something like this????
Task waitfordelete = Task.Run(() =>
{
image im = new image();
});

Assumptions: window image should be shown as a dialog (modal), and only while the call to PrintFactory.sendTextToLPT1 is in progress.
If that's correct, then something like this could work for you:
// Don't forget, you need to dispose modal dialogs
image omg = new image();
// Ensure the dialog has been shown before starting task. That
// way the task knows for sure the dialog's been opened and can
// be closed.
omg.Loaded += (sender, e) =>
{
// Run the print task in a separate task
Task.Run(() =>
{
PrintFactory.sendTextToLPT1(s);
// But get back onto the main GUI thread to close the dialog
Dispatcher.Invoke(() => omg.Close());
});
};
this.Hide();
omg.ShowDialog();
this.Show();
Apologies in advance for any typos/syntax errors/etc. Hopefully the above is sufficient to express the general idea.

The answer given by Narzul and Peter both are correct. You can implement any one. But, I know your next question will be how to implement that method in your code.
you can use Thread or Task class object to separate the process. So when one process is running then other process can perform their taks at that time. There are two process in your login. The first one is send the file to the printer and the second one is the show dialog for 30 seconds and then delete the file. You should create the another thread to invoke the any one of the process so other process can perform asynchronously.
1st: make the seperate process for Print file.
Task waitfordelete = Task.Run(() =>
{
PrintFactory.sendTextToLPT1(s);
});
this.Hide();
omg = new image();
omg.ShowDialog();
this.Show();
2nd: make the seperate process for show dialog and delete the file. But, I think you may get the error in this method. You cannot change the UI from other thread
Task waitfordelete = Task.Run(() =>
{
Dispatcher.Invoke(() => this.ShowSplashScreen());
});
PrintFactory.sendTextToLPT1(s);
private void ShowSplashScreen()
{
this.Hide();
omg = new image();
omg.ShowDialog();
this.Show();
}
if you don't want to use the thread or task then just simply handle the close event of Image form
this.Hide();
omg = new image();
omg.Show();
PrintFactory.sendTextToLPT1(s);
omg.FormClosed += (object sender, EventArgs e) => {
File.Delete(Path.Combine(Application.StartupPath, Path.GetFileName(img_path.Text));
this.Show();
};
and modify the code in timer_tick event in Image form and add the this.Close() after delete file statement.
void timer1_Elapsed(object sender, ElapsedEventArgs e)
{
....
//File.Delete(Path.Combine(#"\\bin\Debug", Filename)); comment this line
this.Close();
}
Another hidden question I have found here. here i cannot pass the old string file name with extension to this form.. Any ways please help me out
void timer1_Elapsed(object sender, ElapsedEventArgs e)
{
//delete the file using "filePath"
string Filename = img_path.Text; // here i cannot pass the old string file name with extension to this form.. Any ways please help me out
for that, you can create the property in Image class and assign the file name from the parent form.
Image omg = new Image()
omg.FileName = Path.Combine(Application.StartupPath, Path.GetFileName(img_path.Text));
omg.Show();
and the property in Image form will be created like this
public class Image : Form
{
public string FileName { get; set; }
public Image()
{
}
void timer1_Elapsed(object sender, ElapsedEventArgs e)
{
....
File.Delete(Path.Combine(Application.StartupPath, this.Filename));
this.Close();
}
}
NOTE: Use the Application.StartupPath istead of \\bin\debug

issue with web browser control not waiting till events performed?

Im trying to get into some webpages and get some information, using web browser so that it remembers my login details. things worked till here but for multiple urls web browser document load is not working properly as i want.
My intention was go to url->wait till it loads--> get required data into text--> new url and same process.
i used for loop to change url but when i run all the url's passed one by one not waiting till document loads and writes to text. please help me.
private void button1_Click_1(object sender, EventArgs e)
{
String text = File.ReadAllText("links.txt");
var result = Regex.Split(text, "\r\n|\r|\n");
foreach (string s in result)
{
listBox1.Items.Add(s);
}
for (int i = 0; i < listBox1.Items.Count; i++)
{
this.Text = Convert.ToString(i + 1) + "/" + Convert.ToString(listBox1.Items.Count);
textBox1.Text += listBox1.Items[i];
String url = textBox1.Text;
webBrowser2.ScriptErrorsSuppressed = true;
webBrowser2.DocumentCompleted += webBrowser2_DocumentCompleted;
webBrowser2.Navigate(url);
}
}
void webBrowser2_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
string sourceCode = webBrowser2.DocumentText;
try
{
/*someregax expressions to filter text */
StreamWriter sw = new StreamWriter("inks_info.txt", true);
sw.Write("url" + "~" + sourceCode + "\n");
sw.Close();
textBox1.Text = "";
}
catch
{
StreamWriter sw = new StreamWriter("inks_fail.txt", true);
sw.Write(textBox1.Text + "\n");
sw.Close();
textBox1.Text = "";
}
}

You have an event handler on the document load for each item, but you're not waiting for it to fire after the first navigation before you initiate the second navigation. Your for loop needs to be "more asynchronous". For example, placing items in a queue and requesting one at a time:
Queue<string> _items;
private void button1_Click_1(object sender, EventArgs e)
{
String text = File.ReadAllText("links.txt");
_items = new Queue<string>(Regex.Split(text, "\r\n|\r|\n"));
webBrowser2.ScriptErrorsSuppressed = true;
webBrowser2.DocumentCompleted += webBrowser2_DocumentCompleted;
RequestItem();
}
private void RequestItem()
{
if (_items.Any())
{
var url = _items.Dequeue(); // preprocess as required
webBrowser2.Navigate(url);
}
}
void webBrowser2_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
// Handle result
RequestItem(); // Then request next item
}
Your code also looks like it's using UI elements (like a list box) as intermediate variables just for a logical purpose rather than display. You should separate out the logic (using regular variables, data structures such as lists and requesting data) from the display (showing the results in list boxes, updating text boxes, etc). It's not clear that you want to be using a WebBrowser even - it looks like you're just downloading text and should use WebClient or HttpClient. The code can then also be much cleaner using async/await:
foreach (var url in urls)
{
string text = await new WebClient().DownloadStringAsync(url);
// Handle text
}

Very Simple answer. The WebBorwser control sucks for this stuff but here is what you are looking for:
WHILE(webBrowser.ReadyState != WebBrowserReadyState.Ready)
{
Application.DoEvents()
}
Thats it.. It will not freeze your app or get you lost in code, it just waits till its don't navigating. You be most welcome.

Add files to Listbox via Thread?

in my application i want to add files into my list box.
if my file isn't pcap extension i want to send the file path to my class and convet it to pcap extension and then add this file to my Listbox.
in case i am choose to add namy files the GUI not responding until my application finish to add or convert this file and i wonder how to add the option to do all this via threads.
private void btnAddfiles_Click(object sender, EventArgs e)
{
System.IO.Stream stream;
OpenFileDialog thisDialog = new OpenFileDialog();
thisDialog.InitialDirectory = (lastPath.Length > 0 ? lastPath : "c:\\");
thisDialog.Filter = "(*.snoop, *.pcap, *.cap, *.net, *.pcapng, *.5vw, *.bfr, *.erf, *.tr1)" +
"|*.snoop; *.pcap; *.cap; *.net; *.pcapng; *.5vw; *.bfr; *.erf; *.tr1|" + "All files (*.*)|*.*";
thisDialog.FilterIndex = 1;
thisDialog.RestoreDirectory = false;
thisDialog.Multiselect = true;
thisDialog.Title = "Please Select Source File";
if (thisDialog.ShowDialog() == DialogResult.OK)
{
if (thisDialog.FileNames.Length > 0)
{
lastPath = Path.GetDirectoryName(thisDialog.FileNames[0]);
}
foreach (String file in thisDialog.FileNames)
{
try
{
if ((stream = thisDialog.OpenFile()) != null)
{
using (stream)
{
string fileToAdd = string.Empty;
Editcap editcap = new Editcap();
BackgroundWorker backgroundWorker = new BackgroundWorker();
backgroundWorker.WorkerReportsProgress = true;
backgroundWorker.DoWork += new DoWorkEventHandler(
(s3, e3) =>
{
if (!editcap.isLibpcapFormat(file))
{
fileToAdd = editcap.getNewFileName(file);
}
else
{
listBoxFiles.Items.Add(file);
}
});
backgroundWorker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(
(s3, e3) =>
{
listBoxFiles.Items.Add(fileToAdd);
});
backgroundWorker.RunWorkerAsync();
lastPath = Path.GetDirectoryName(thisDialog.FileNames[0]);
}
}
}
catch (Exception ex)
{
MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message);
}
}
}
}

Your application is freezing because you're doing a lot of work in the UI thread. You need to move the long running tasks to a background thread and then just update the UI in the UI thread.
The first thing that you need to do, in order to do that, is seperate out your long running task from your UI manipulation. Currently you're intermingliing the two, which is what's causing your confusion as to how to map it to a BackgroundWorker.
As long as you don't need to be updating the listbox iteratively and it's okay to just add all of the items at the end all at once (that's what I would expect out of a listbox) you can simply do your file IO in one place, adding the results into a collection of some sort (List is likely appropriate here) and then, separately, you can add all of the items in the list to your ListBox (or use data binding).
Once you make that change the move to using something like a BackgroundWorker is quite easy. The IO work that populates the List goes in the DoWork, runs in the background, and then sets the Result. The RunWorkerCompleted event then takes that lists and adds the items to the ListBox.
If you have a compelling need to add the items to the listbox as you go, so you see one item, then the next, etc. over time, then just think of it as "reporting progress" and use the relevant progress reporting functionality built into BackgroundWorker. Update the progress inside of the loop, and in the progress reported event handler take the value given to you and put it in the ListBox.
Here is an implementation:
private void btnAddfiles_Click(object sender, EventArgs e)
{
System.IO.Stream stream;
OpenFileDialog thisDialog = new OpenFileDialog();
thisDialog.InitialDirectory = (lastPath.Length > 0 ? lastPath : "c:\\");
thisDialog.Filter = "(*.snoop, *.pcap, *.cap, *.net, *.pcapng, *.5vw, *.bfr, *.erf, *.tr1)" +
"|*.snoop; *.pcap; *.cap; *.net; *.pcapng; *.5vw; *.bfr; *.erf; *.tr1|" + "All files (*.*)|*.*";
thisDialog.FilterIndex = 1;
thisDialog.RestoreDirectory = false;
thisDialog.Multiselect = true;
thisDialog.Title = "Please Select Source File";
if (thisDialog.ShowDialog() == DialogResult.OK)
{
if (thisDialog.FileNames.Length > 0)
{
lastPath = Path.GetDirectoryName(thisDialog.FileNames[0]);
}
BackgroundWorker backgroundWorker = new BackgroundWorker();
backgroundWorker.WorkerReportsProgress = true;
backgroundWorker.DoWork +=
(s3, e3) =>
{
//TODO consider moving everything inside of the `DoWork` handler to another method
//it's a bit long for an anonymous method
foreach (String file in thisDialog.FileNames)
{
try
{
if ((stream = thisDialog.OpenFile()) != null)
{
using (stream)
{
Editcap editcap = new Editcap();
if (!editcap.isLibpcapFormat(file))
{
string fileToAdd = editcap.getNewFileName(file);
backgroundWorker.ReportProgress(0, fileToAdd);
}
else
{
backgroundWorker.ReportProgress(0, file);
}
lastPath = Path.GetDirectoryName(thisDialog.FileNames[0]);
}
}
}
catch (Exception ex)
{
MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message);
}
}
};
backgroundWorker.ProgressChanged +=
(s3, arguments) =>
{
listBoxFiles.Items.Add(arguments.UserState);
};
backgroundWorker.RunWorkerAsync();
}
}

You can do it with BackgroundWorker:
Add a backgroundWorker to your form via the Toolbox.
Start it with:
backgroundWorker.RunWorkerAsync(new string[] {parm1, parm2});
Add a events to backgroundWorker (Properties window)
Use DoWork to do your calculations. Then use RunWorkerCompleted to apply the settings.