I want to use OpenFileDialog as selecting file with expression( . or *.zip) On File Name EditBox.
Do I have to override OpenFileDialog ? if then, please give me a tip about it.
At now, If I put file name as . and click 'open' , the OpenFileDialog doesn't return anything.
Sorry about my poor English.
Looks like you want to filter the possible file types of the file dialog. You can do that like this:
myOpenFileDialog.Filter = "Zip Files|*.zip";
If you want to allow several file types, you can just extend the list with several |'s
myOpenFileDialog.Filter = "Zip Files|*.zip|All Files|*.*";
You can't do what you want with OpenFileDialog. It wraps up the common Windows component which has special treatment for file names that contain wildcards. Those are interpreted as filters for the file list view.
Related
I have a requirement to allow users to open a specific file for processing. The open file dialog is currently
OpenFileDialog ofg = new OpenFileDialog
{
FileName = "BaseFileName*",
Filter = "CSV File (*.CSV)|*.csv",
Multiselect = false,
InitialDirectory = #"N:\Downloads"
};
However the process adds a suffix of _Processed along with timestamp data to the filename and I want to exclude these renamed files the next time the OpenFileDialog is used to prevent the user trying to reprocess the same file.
I have to leave the original files where they are for internal audit reasons.
So I need an additional filename filter of not equal to "_Processed".
Is there any way to do this with OpenFileDialog or does anyone know of a custom c#/.net component that can do this?
You are asking to omit specific items from the file dialog view.
According to MSDN, this is no longer possible as of Windows 7, but was possible previously.
The C# file dialogs (both WPF and WinForms) use the IFileDialog API.
Here is the function that could have made this work, but is no longer supported:
https://learn.microsoft.com/en-us/windows/win32/api/shobjidl_core/nf-shobjidl_core-ifiledialog-setfilter
As it is, you are stuck with checking the file for correctness after the user has already selected it and confirmed it with OK.
You can help the situation a little bit: If you enjoy pain, then you can copy the whole IFileDialog COM interop code from the .NET source code, and implement IFileDialogEvents. This way, when the user clicks "OK", you can deny the selection and display an error before the dialog closes, leaving the dialog open so the user can select a different file.
If you are sane and you don't want to do that, then you'll have to open the dialog again after the verification fails.
The easy way is just saving the processed data with another extension e.g. "BaseFileName_Processed_20105640640.cvs1", that way you keep the data and your file dialog will not show this file.
Another way could be to call the OpenFileDialog() in an if statement (and compare the return to DialogResult.OK), then split the file name for {'_','.'}, then run a loop to count the occurrences of the word Processed( >0), and possibly as a safety check determine whether a timestamp is present in one of the split strings. Finally, reload the FileOpenDialog in the same folder when the wrong file was selected.
ofd.Filter = "pdf files (*.pdf)|*.*";
Why is it that it can still brownse non-pdf files? Is something wrong here?
The string is in two parts (FileDialog.Filter docs):
Label|Extension
Your label is pdf files (*.pdf), but the extension you are filtering by is *.*. Try setting it to |*.pdf instead.
In short, the *.pdf you have specified is only a descriptive text. It could be anything. It is not used to filter.
I am writing a WPF / C# application, and would like to enable a user to select one (or multiple) files, or one (or multiple) folders, without having to select which option they use initially, but intentionally. In my opinion, the best way to acchieve this goal would be to have a standard FolderBrowserDialog, and as long as the user does not seelct a file, but browses to a path, clicking the open button should select that path.
Practically, this solution does not work, because OpenFileDialog does not allow empty selections, you can hit "open", but nothing will happen. There is one workaround descriped here which allows to enter a fake name like "Selected Folder." as filename. which can afterwards be filtered out, which is a workaround, but not a nice one:
http://www.codeproject.com/Articles/44914/Select-file-or-folder-from-the-same-dialog
This solution has two important weaknesses:
1.) you will have to filter for the fake name
2.) if you paste a filename manually, or select a file first, and then switch the selection to a folder instead, the fake name is not inserted automatically.
of course I am aware there is something like FolderBrowserDialog, which I omit using even if I only wanted to select folders and not files. The reason: this dialog has no possibility to paste paths from clipboard, and I find it annoying to navigate all the way, I rather copy paths from somewhere and paste them, which works perfectly fine in OpenFileDialog, but not in FolderBrowserDialog. Besides, FolderBrowserDialog does not allow to select files and folders.
I have googled a lot, but do not find satisfying solutions, although I am sure many people must obviously face this problem.
As mentioned, the most elegant way for me would be to make the OpenFileDialog simply allow empty Filename boxes when clicking Open - any way to acchieve this?
Thanks alot.
Letting a user select a directory OR a file using the same dialog is not practical nor intuitively possible.
However, if you want a solution for selecting a Folder, here it is :
If you don't want to create a custom dialog but still prefer a 100% WPF way and don't want to use separate DDLs, additional dependencies or outdated APIs, I came up with a very simple hack using WPF's Save As dialog for actually selecting a directory.
No using directive needed, you may simply copy-paste the code below !
It should still be very user-friendly and most people will never notice.
The idea comes from the fact that we can change the title of that dialog, hide files, and work around the resulting filename quite easily.
It is a big hack for sure, but maybe it will do the job just fine for your usage...
In this example I have a textbox object to contain the resulting path, but you may remove the related lines and use a return value if you wish...
// Create a "Save As" dialog for selecting a directory (HACK)
var dialog = new Microsoft.Win32.SaveFileDialog();
dialog.InitialDirectory = textbox.Text; // Use current value for initial dir
dialog.Title = "Select a Directory"; // instead of default "Save As"
dialog.Filter = "Directory|*.this.directory"; // Prevents displaying files
dialog.FileName = "select"; // Filename will then be "select.this.directory"
if (dialog.ShowDialog() == true) {
string path = dialog.FileName;
// Remove fake filename from resulting path
path = path.Replace("\\select.this.directory", "");
path = path.Replace(".this.directory", "");
// If user has changed the filename, create the new directory
if (!System.IO.Directory.Exists(path)) {
System.IO.Directory.CreateDirectory(path);
}
// Our final value is in path
textbox.Text = path;
}
The only issues with this hack are :
Acknowledge button still says "Save" instead of something like "Select directory", but in a case like mines I "Save" the directory selection so it still works...
Input field still says "File name" instead of "Directory name", but we can say that a directory is a type of file...
There is still a "Save as type" dropdown, but its value says "Directory (*.this.directory)", and the user cannot change it for something else, works for me...
Most people won't notice these, although I would definitely prefer using an official WPF way if microsoft would get their heads out of their asses, but until they do, that's my temporary fix.
I have posted - How to use OpenFileDialog to select a folder?, I couldn't find the correct answer.
So, I have changed my question.
I want to customize OpenFileDialog to select multiple folders and files. I tried to find a solution and could see some posts about it.
From the internet, I found the following project - https://github.com/scottwis/OpenFileOrFolderDialog.
However, while using this, I faced one problem. It uses the GetOpenFileName function and OPENFILENAME structure from MFC.
And OPENFILENAME has the member named "templateID".
It's the identifier for dialog template. And the sample project has the "res1.rc" file and, also have the templated dialog in it.
But I don't know How can I attach this file to my C# project?
Or is there any other perfect solution about - "How to customize OpenFileDialog to select multiple folders and files?"?
If you use the FileNames property instead of the FileName property, you get a string array of each file selected, you select multiple files using the shift key. Like so:
private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog x = new OpenFileDialog();
x.Multiselect = true;
x.ShowDialog();
string[] result = x.FileNames;
foreach (string y in result)
MessageBox.Show(y, "Selected Item", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
For files and folders you need to use the CommonOpenFileDialog included with the WinAPI, the particular class is here.
Try this:
openFileDialog.Multiselect = true;
You might not get a built in .Net control like that. Definitely the OpenFileDialog can not function as both File as well as Folder browser. You have two choices go for a third party tool like the one you found second make your own control. Surprisingly you might not find creating a very simple version of your own control very difficult.
I have the following code in my C# program:
OpenFileDialog fDialog = new OpenFileDialog();
fDialog.Title = "Open a file";
fDialog.Filter =
"NCF files (*.ncf)|*.ncf|All files (*.*)|*.*|No Extensions (*.)|*.";
I want to be able to have the user pick from the following:
*.NCF (files with .NCF extension only)
**.* (all files)
and files that have no extensions such as:
filewithnoextension
I know ***.* will do this, but it also displays the .NCF, .TXT, and all other files in the same directory. I just want to be able to display filenames that have no extensions.
Filtering with *. does not do the trick. It works fine when doing it with a DOS window (dir *.) , but C# seems to ignore the *. filter.
Is there a way I can do this with C#?
Thanks.
I know this works:
fDialog.Filter = "No extension Files|" + null;
I haven't tested with multiple selections..
Altough this is an old post, I though it would benefit someone looking for a way to only display files with no extensions..
A readme file normally has an extension. I suppose you did, but did you check this folder option to see the extensions of known file types? Has it changed anything?
EDIT #1
Frankly, I doubt you'd be able to make the OpenFileDialog display files with no extension, as the Filter property is based on the extension.
Perhaps you could inherit base your own implemented OpenFileDialog using the System.IO namespace objects such as DirectoryInfo, for instance, which will allow you to get the browsed folder files with the Getfiles() method, then filter yourself through LINQ to display the files with no extension only with the FileInfo.Extension property.
EDIT #2
Since the OpenFileDialog is sealed, you may use it as a nested type and implement your own methods using this nested type.
I hope this helps you!
If the other software program creates these files in the same location, why not have your code add an extension (something innocuous like ".XXX") to every extension-less file in that folder, and then show the dialog?
Edit: Or, see this MSDN article:
http://msdn.microsoft.com/en-us/library/ms646960(VS.85).aspx
From the Filters section:
The CDN_INCLUDEITEM notification
message provides another way to filter
the names that the dialog box
displays. To use this message, provide
an OFNHookProc hook procedure and
specify the OFN_ENABLEINCLUDENOTIFY
flag in the OPENFILENAME structure
when you create the dialog box. Each
time the user opens a folder, the
dialog box sends a CDN_INCLUDEITEM
notification to your hook procedure
for each item in the newly opened
folder. The return value of the hook
procedure indicates whether the dialog
box should display the item in the
folder's item list.
Down at the bottom in the Explorer-Style Hook Procedures section, the article explains how to do this. Basically, you pass an event handler to the OpenFile dialog, and each time the user navigates to a new folder, the dialog iterates through all the files in the folder and calls your event handler for each one. Inside the event handler, you would put your code to determine if the file has an extension or not, and return true or false, accordingly.
I thought using *. would work, but it doesn't, so it seems that's a limitation of the OpenFileDialog control.
You could create your own dialog but the OpenFileDialog is not inheritable so this would end up being a lot of work for just a small feature.
Is the file with no extension created by your own application? If that's the case, you could give it a custom extension for your filtering. If it's not, then I'm afraid I can't think of anything else to help you :(
Good luck!