What I'm trying to do is have a collection of images stored in a media drive be dynamically changed once the user enters the images name in a text field. At the moment all I am able to do is load one singular image.
Is what I'd like to do even possible? If so, how can I go about doing it?
I'm extremely new to winform programming and my google searches haven't turned up much.
EDIT
Managed to fix the issue. The line of code I needed was as follows:
pictureBox1.Image = Image.FromFile("Image Location");
If you mean the Embedded Resource
The answer is you can't modify the image under the Local Resource
Here's a good explanation: how to edit a resource file
Related
I am relatively new to C#, however I do have some basic knowledge of code from courses in high school and university. However, there is one thing I have not been able to figure out over the years. I am currently making a Form Application for a database system that stores information in a List using Visual Studios 2010.
On my main form; when the save button is pressed, the information is then serialized into an XML file. When the information is loaded, the information is then deserialized and put into the List for use in the code. All this is working correctly.
This process of saving and loading is done based on a string which contains the file path. This string is the location of a folder on my desktop (I put it there for easy access), and I am able to change the string in the code to basically move where the information is stored.
However, I have a separate "Admin" form which is able to change this file path string. When the user clicks the button to change the file path, I get the input from a text box, check its formatting, move the current file to the new location and update the location for the save method so changes can be saved before the program is closed. From there, the program reacts the same way as if I had changed the string from inside the code.
The problem occurs when I close the program. I do not know how to tell the program when it runs again that the location has been changed from the default and look for the file in the new location. The program reacts just like the file was missing (like it should) when it looks in the default location.
So basically, how do I tell the program that the save location was changed from when it was last run so it knows to load the info from a new location?
I have tried looking for an answer since high school (about 2 years ago) and have not found a solution. As a result I usually just keep the save location as the default (which I set it to) and don't try to change it. But this time, its important that the save location can be customized. My experience with Visual Studios is limited, as everything I know is from messing around with the program and looking up stuff when needed.
If needed, I can post snippets of my code. Thank you in advance!
It seems like what you really want is to save some user-defined settings for recall at run-time. Here is a MSDN link describing some basic conventions for storing / retrieving these settings.
https://msdn.microsoft.com/en-us/library/bb397750(v=vs.110).aspx
A *.config file would suffice (depending on the scale of the application).
Otherwise, you may want to go down the route of storing these settings in a database (if the scale is rather large, or if user-authentication is required for the application).
Here is another previous question dealing with this same subject (regarding App.config files):
What is App.config in C#.NET? How to use it?
I recommend using a config file where the .exe is, and write the location there, then read it in on program startup.
In particular .net provides this class which can manage your config file for you (assuming you have an app.config in your solution, otherwise create one)
https://msdn.microsoft.com/en-us/library/system.configuration.configurationmanager.appsettings(v=vs.110).aspx
I'm working on a project that will auto-generate Word and HTML reports. If they don't provide an Image to use in the header of the Word report, the customer wants to use their logo. I have the logo stored in the resources of one of the projects as a .jpg.
The method to add a picture to a range needs the path as a string to the image, without any overloads. I know that when a file is added to the resources of the project, it doesn't exist as it gets embedded inside the .dll that gets created. Is there no way to utilize that embedded resource in that method?
Do I need to copy that file as part of the install to the directory? I'm thinking that may be the easiest solution, however what should I do for testing purposes?
I was making this a lot harder than it needed to be.
All you have to do is make an image object from the resource:
Image img = Data.Properties.Resources.ImageFile;
Then after that, all you have to do is save it:
img.Save(#"C:\DestinationFolder\Image.jpg");
Now you have the file to use however you want. It won't matter if you're in debugging or not (as far as your Application.Run location) in the event you have it in a subfolder in your project (as you should), but wouldn't necessarily have it in the same path at the end.
I was way over-thinking this the other day when I asked this question. Hopefully I'll be able to help someone else out who's having this same issue.
I have a few questions. Yes this is homework and I am just trying to understand it.
This is what is being asked.
• When the button “Load” is clicked, read the file specified in the textbox (txtFilePath: Absolute path not relative) and add the objects found within to the listbox
• When the user clicks the “Save” button, write the selected record to the file specified in txtFilePath (absolute path not relative) without truncating the values currently inside
Can someone please explain to me as I am still learning this. I have the button and the textbox there and the same with the save. Now with the save button will I just have the same code as you would if you just wanted to save it. But from what I am gathering there is a database so you can load the file that you saved. Or am I making this harder than what it is?
No, no database. In these instructions, record == some selected item that needs to be appended to an existing file. Just use a stream and a writer to save the file to disk and you satisfy the requirement.
No, there is no database. What you do is interact with the Windows file system (eg, the files on your hard drive). You use the classes in the System.IO namespace to load and save files.
'Absolute path' refers to the unique location of a file in the drive expressed as a rooted expression; a 'relative path' is a partial path that points to a file relative to a given location:
c:\foo\bar\baz\my files\homework.txt
..\..\homework.txt
Those are an absolute and relative paths.
I'm not sure how much detail you are looking for here, it's hard to give a complete overview of the way filesystems work. You might want to look at the basic examples in MSDN that deal with file management.
It's hard to give a detailed analysis of this subject as it is quite a wide topic.
For file interaction you must use the System.IO namespace which has classes to easily load and save files.
http://msdn.microsoft.com/en-us/library/system.io.aspx
The link above is a good reference on MSDN on how you can get started with File Management using System.IO.
Good luck!
If I understand you correctly, your question is wether or not you need to read the file a second time before saving or otherwise treat if differently than if you created a new file.
I would say "no". You have already read the content of the file into the listbox. You just need to get the edited content from the listbox (when the user is done with it) and save it to the file (overwriting whatever is there).
First of all read up on how to read and write files. Here's a good link I found:
check it out
Next what you'll want to do is put your read/write code in the Button_Click event of each button (double click on your buttons to auto create this event assuming your using Visual Studio)
You can easily retrieve the path from your text box by accessing the .text() property of your textbox
string path = myTextBox.Text;
It's been a while since I've coded anything in c# but this is pretty basic and I think it should help.
For Load:
Read the file line by line
Add each line to the ListBox Items
For Save:
Open your save file without truncating (ie append to the file)
For each item in your ListBox Items, write it to the save file
i have a picture box in my win forms app. the question is, how can i make the image load from a directory within that application,
for example, i have a program and it lies under Debug directory. Now i have an image located under Debug/source/images/logo.png. I dont want to make use of resources file (embedded within the assembly)
How can i point it towards that path, instead of getting the image/picture from the local resources file.
Try this
String.Format(#"{0}\myDesiredPath\MyFile.MyExtension",System.Reflection.Assembly.GetExecutingAssembly().Location);
There are a number of ways to do this, you can use the ImageLocation property or the Load method to specify the path just take a look at the documentation here
I am working on a file explorer using Silverlight OOB. I need a way to get and display the icon associated with each file in my application. Note, I only need to show the icons, I don´t need to open the files.
If I understood you right, you're building something like Windows Explorer and want to mimic its list view by showing the program icons right before their names.
I'm not sure whether OOB has access to the System.Drawing.Icon class, but if so, you can use the following code to get the icon for any given file:
Bitmap icon = System.Drawing.Icon.ExtractAssociatedIcon(filename).ToBitmap();
If not, the only way you can do it is by storing the icons for most common file formats in a dictionary and retrieving them from there based upon file extension.