I have a winform project which lists all the files in a specified folder. It allows the user to select a new destination for each file, and when the user has chosen the destinations for all files that he would like to be moved, it moves the files, one by one.
My next step is, I need to display a confirm form when the files are being moved, and add each file's name and destination to the confirm form as it is being moved.
My question is:
How can I add more text to the confirm form's controls after I already loaded it (using confirm.showdialog() from my other form, without any user interaction? I imagine that I need to do it from the original form, because it needs to display each one when it starts to move that file, but I'm open to any suggestions:)
TIA
Both above answers are good.
If I understand correctly, your main form will allow one to select multiple files, then select their destination and launch the move process. If that's what you need, I would simply do the following:
Create a new form that would report the process to the user, without requiring any interaction, but just to inform the user what file is being moved;
Create an instance of a BackgroundWorker object, and call the file-move method from the BackgroundWorker.DoWork() method (within your main form);
Flag your BackgroundWorker to report progress, then call the BackgroundWorker.ReportProgress() event handler from within your move-file method;
Use the previously created list of file names to get its name and report it to your file-move dialog form while the file is being changed. A simple DataBinding over a Label should do the trick while you'll move your CurrencyManager to the next item within the list, or you could simpler use the list indexer to get the filename at a particular index;
When the user launches the move process, get your filenames and and count them, then set your ProgressBar Maximum value to the number of files you have.
The BackgroundWorker.ReportProgress() method takes an integer value as its argument, then, with your ProgressChanged() event handler, you will be able to display the name of the file being copied to your window by getting the filename at the index location, index given by your ReportProgress() method.
This will allow you to use the performance of a supplemental thread, without "freezing" your main thread from which your form has been created, then you will be able to simultaneously perform your file move, and display the filename to the progress-form, while illustrating to your user visually what the progress is about through your ProgressBar control, and displaying the filename as required.
Does this help?
Wouldn't it be simpler to make another form instead of using preset dialogs?
that way you can just have a textbox that you populate and refresh
You could do put all of the code to show the moving of the files inside the confirm dialog window.
But to give a more complete solution could you tell me how you are gathering the file moving information.
A Good solution would be to just pass in the list of the files to be moved and then perform the moving function in the dialog.
Related
I'm creating a simple program that will allow the user to with the click of buttons to create empty files, delete files, rename them and much more. Now to my question. When I click on the Create New File button (obviously empty), I have a new window pop up.
In that window I want two textboxes and one button to be present. The first textbox shows the initial path to the file I want to create (i.e C:\Users\Username\Desktop\) and the second textbox will show the name plus extension of the file (i.e Hero.dll).
The button will then combine these and make the file and put it in the directory the textbox is displaying. However, I'm having trouble with the textbox displaying the name.
Also, the textbox displaying the path is called txtPath and the textbox displaying the name is called txtName.
So this
IO.File.Create(txtPath.Text, txtName.Text)
gives me this error
Conversion from string "Hero.dll" to type 'Integer' is not valid.
and I noticed in the code (Intellisense I'm assuming is what it's showing in) it says
Functions File.Create(path As String, bufferSize as String) As Filestream
and so bufferSize is the txtName textbox by then.
How would one go about fixing this so txtName does what it's supposed to do, or do I simply have to roll with only displaying the path?
I have tried a couple of things myself but none worked the way I wanted it to.
Also, creation of the file works like a charm if the code only says
IO.File.Create(txtPath.Text)
given the name of the file is also displayed in the path.
I'm open for any kind of help, as I've tried several different "solutions" I've come up with myself. Thank you!
The first parameter should specify both the path and the file name. You can, and should always, use Path.Combine() to concatenate paths and file names.
Also, the File.Create() method opens a FileStream to the file, which keeps it locked until you close it or the application. If you do not intend to use this FileStream to write data to the file you ought to dispose it so the file lock is released.
IO.File.Create(Path.Combine(txtPath.Text, txtName.Text)).Dispose()
I have the following situation where I have multiple controls on a form. The user can select an Edit mode which allows them to modify the contents of the controls (textboxes, checkboxes, comboboxes, etc.) After editing has been made, the user can either select the Save or Cancel button.
Obviously clicking on save will save all changes to the database, however, if the user clicks on cancel, I want to 'somehow' revert all controls back to their previous state.
Currently, when the user clicks on cancel, the form turns off edit mode, but the controls remain with all the changes made until they reload the form.
Is there an easy way around this, or do I need to reload the entire form content from the database each time the user clicks on cancel?
Thanks in advance.
I'm just going to outline a possible solution here.
You could have a dictionary in your form in which you store the content of your controls whenever a user first modifies them, indexing them by the control name.
When the user starts modifying a control, you check if the control already exists in the dictionary. If it doesn't you add a new entry to the dictionary with the current value of teh control.
If the user cancels the editing process, you can loop through the dictionary, find each control in your form by its name (Form.Controls(ControlName) or something like that I think), set its value back to what it was and remove the entry from the dictionary.
It's not the most elegant solution as it will involve linking up all your controls to the TextChanged event or equivalent to capture their value when they are modified...
To avoid that, you could fill the dictionary right at the start when you load your form, after populating the values from the DB and then only set those controls' value back which have a different value when the user cancels.
When deleting records within the platform, this action is not reversible via the front end. Is there a way to allow users to remove a record from their view without actually deleting the record?
You can simulate recycle bin functionality within Archer GRC by adding a record permission field that grants read access to "Everyone". If read access is no longer required then an editor of the record can go in and change "Everyone" to a group called "Recycle Bin."
Please note that if there are other record permission fields in the application, users or groups may still have access if they are selected in those fields. Perhaps You can set up a dropdown status field for the user to select "Recycle Bin" and use this condition for automatic record permissions to revoke permission to the record depending on the requirements or workflow of the application.
Solution shared by Igritte might be somewhat confusing for end users.
End user will see greyed out "Delete" button in the top toolbar, but he has to select "Recycle Bin" in the form. This solution was not accepted by my business owner at some point.
As a work around for "Soft delete", I wrote a custom object overriding "Delete" button functionality.
1. User doesn't have delete access to the record, so JavaScript code will make "Delete" button look like active and available.
2. Once the button is clicked, custom object will populate value in the
hidden value list and simulate the click on the "Save" button.
Update: Note that Custom object needs to hide the value list first once the page is loaded. Here you will need to use a JavaScript and do the following: [a] locate the value list DOM object and [b] set display attribute to none. I used jQuery library to do both. This way your value list is not displayed, but you still can use it to control data driven events.
3. With hidden value populated and submitted, record permission will hide this record from the end user.
Note that custom object hides one value list on the layout as well.
If for some reason JavaScript doesn't load properly, user simply will not be able to click on the grayed out "Delete" button.
Update: Hidden value list can be populated by custom object using JavaScript code as well. You need to identify the form tag "input" in HTML code of the page and set attribute "value" to the desired state. I used jQuery library to do this as well.
I have this solution in production working fine with IE11, FF and Chrome.
I can't share the code, but with WC3Schools JavaScript guides and 4 hours you can write and test it yourself with very little JavaScript skills.
Sometimes you have to use custom objects when you want to get a user-friendly solution of not available functionality.
Good luck!
I am writing a Windows Forms application in VB.NET. I have three forms: the main form, which shows a list of accounts, the account form which allows the user to view/edit the information for a specific account, and the policy form which allows the user to view/edit the information on a specific policy for that account. I want the forms to appear as if they are all the same window. Example: when the application starts, the user clicks an account name in the list box on the main form and clicks "edit". What I want to happen is that the window stays in the exact same place and stays the same exact size, only the content of the main form appears to be replaced with the content of the account form. Same thing if the user then chooses to edit a policy from the account form. When the user finishes and clicks "save", the main form comes back up. Through this entire use case, it would appear to the user as if they were viewing the same window the entire time, with the content of that window changing.
How can I do this? I have tried something like:
Dim newForm as New AcctForm
newForm.Location = Me.Location
newForm.Show()
Me.Close()
The problem is that if the user moves the original window, the new window appears where the parent form originally appeared, not where it ended up.
I see this is already in the comments, but what I have done in this case in the past is build each "form" in the application as a custom control. Then I have one actual form, and navigation works by changing which custom control is currently loaded on the parent form. To move from one screen/view to another, you remove the current custom control from the form's controls collection and add the new custom control.
I believe this is superior to manually setting the startup position and size, because you can use the form's .SuspendLayout()/.ResumeLayout() methods to hide the interim state, where there is no control loaded, from the user. This is harder to do when you want one form to be completely replaced by another.
This also makes it easy to set certain form properties in one place and have them be consistent for the application. You can even have an area on the form with controls that will now show in every view.
When using this pattern, I typically have each of my custom controls inherit from a common base. You may not have anything specific you will do with that base at the outset, but it almost always comes in handy later.
Finally, switching to use this scheme is easier than you think. Just go to the code for the each of your current forms, and you will find that each class currently inherits from System.Windows.Forms.Form. Most of the time, all you really need to do is change them to inherit from System.Windows.Forms.Panel and you're most of the way there.
As others have said, it may be better to redesign your application using custom controls or panels etc.
However, to answer your question regarding the seemingly random location of your forms, the first thing to check is that each form has it's StartPosition property set to Manual.
If your main form is resizable, then I would also add code to adjust newForm to the same size too.
I hope that helps with your immediate issues; so that you can move on to redesigning the application!
good morning there is another way . set property for second form to (top most) and use also
from2.show();
that make you switch between forms and keep form2 top other
Thanks
try using ShowDialog()
Dim newForm as New AcctForm
newForm.Location = Me.Location
newForm.ShowDialog()
Me.Close() <-- removed this
I'm writing an intranet ASP.NET page using VB.NET. I've run into a particularly nasty problem dealing with handling file uploads. I'll do my best to explain the problem, and perhaps someone can help.
My problem is almost a duplicate of this one, or this one, except (other than the filename) I don't care about sending the file to the server until the other data has been reviewed.
Here's the situation:
Joe Q. Dataentry inputs some data into several fields. The first 3 are drop down, and when he changes the selection, a postback event is fired that queries a database for valid entries for the other drop down selections. After selecting the values, he inputs some other data, chooses a file to accompany the data and clicks the "Update" button. When he hits the button, it fires a postback event that sends the current data to the server to be validated. The data will create a change in the database, so he is presented with a view of the current state, and what it will look like when his changes are made. He can now either confirm or cancel the operation for whatever reason.
Part of the data he will see involves the extension of the file which may be a PDF, or could also be some image file or other document.
Now here's where my problem is - on each postback event, the fileupload dialog is cleared. I was getting around it by creating a temporary file on the first postback and then renaming if he clicks OK or deleting on Cancel... but I need to do a variety of things, based on the previous state of data and the filename. I've tried to keep some session variables to retain the filename, and that works OK for just renaming the file, but for what I need to do it gets unwieldy.
What I want to do is be able to have the postback event to present the changes, and then when the user clicks "OK", submit the file. Is there any possible way to do that?
One of my thoughts was to do some of the validation client-side (I'm already re-validating server side so I'm not too worried about data security there), but I don't know how I could get the information from the database query.
Thanks for any help, and reading my slightly convoluted story/situation!
EDIT:
It appears that what I want to do is prevent a certain button from firing a full postback. Is there any way to do that?
EDIT II:
I have an update panel on the page already - is there any way for the button to only post what's in the update panel?
What you might want to do is place your drop-downs inside of an ASP.NET AJAX UpdatePanel, and keep your file upload control out of that.
Your update panel will do the post backs and allow your validation logic to happen without submitting the file, then when you hit your final "Save" button (which is also outside of your UpdatePanel) the entire form will be submitted back and you can work with your file then.