I try to implement shellstyle drag and drop into my WPF Application, and use this code which was provided by Simon Mourier https://stackoverflow.com/a/61148788/18212454 which works realy fine, but only for one file.
public static System.Runtime.InteropServices.ComTypes.IDataObject GetFileDataObject(string filePath)
{
if (filePath == null)
throw new ArgumentNullException(nameof(filePath));
Marshal.ThrowExceptionForHR(SHCreateItemFromParsingName(filePath, null, typeof(IShellItem).GUID, out var item));
Marshal.ThrowExceptionForHR(item.BindToHandler(null, BHID_DataObject, typeof(System.Runtime.InteropServices.ComTypes.IDataObject).GUID, out var dataObject));
return (System.Runtime.InteropServices.ComTypes.IDataObject)dataObject;
}
So my question is can i add multiple filepaths to one IDataObject with this or a similar funtion?
I tried to work through microsofts documentation but that didnt get me any further with my problem here.
Related
I am relatively new to programming in C# (Learning on my own for a school project) and decided to try using TweetInvi to implement Twitter functionality.
So far it's going good, got the authentication and publishing up and running, but I'm struggling to find out how to use the DestroyTweet() method.
It, and many other methods takes a tweetID parameter, which I can't figure out of how to find for a specific tweet.
Using the following code to publish a tweet, how can i find the tweetID of this tweet?
public ITweet publishTweet(string text)
{
return Tweet.PublishTweet(text);
}
// Snippet from a test method in main class.
twitter.twitterUser.publishTweet(System.Console.ReadLine());
// Still working on GUI so using ReadLine for now.
It's probably an easy solution, but I just can't figure it out!
Thanks in advance.
You can try something like this:
public string PublishTweet(string text)
{
var appCredentials = new TwitterCredentials(_apiKey,_apiSecret, _accessToken, _accessTokenSecret);
Tweetinvi.Auth.SetCredentials(appCredentials);
text = "my tweet";
var publishedTweet = Tweetinvi.Tweet.PublishTweet(text);
var tweetId = publishedTweet.Id.ToString();
return tweetId;
}
You just need to get the published tweet into a var for the result of the PublishTweet() method then you select the field(s) you need.
Simple solution. As explained before you need to take the tweet back from PublishTweet.
string text = "text";
ITweet tweet = Tweet.PublishTweet(text);
bool destroySuccess = tweet.Destroy();
For a project I am currently working on I'm required to use the clipboard to a certain extent.
What I need:
Save text and some additional application specific data to the clipboard. The text is supposed to be usable with CTRL + V within other applications while the application data should usually be omitted as it is mostly used for referencing stuff (like quotes and so on)
What I tried:
Copying custom object to clipboard and overwriting the ToString-Method, which was a little naive to think it would work
[Serializable]
public class TestData {
public string txt;
public string additionalStuffs;
public override string ToString() {
return txt;
}
}
Clipboard.SetData( "TestData", new TestData() { txt = "This is a text", additionalStuffs = "Stuffs" } );
I would now need the txt to be pastable into other applications as a string while the other data is ignored unless posted in my application. For the sake of being readable and easy to use for the user.
Can any of you explain how I need to approach this problem? Is there even a way to do that?
Okay, a little more trial and error using the documentation and I actually found a solution.
For everyone having the same problem: the trick is using a DataObject like the following:
[Serializable]
public class TestData {
public string Whatever;
}
IDataObject dataObject = new DataObject();
dataObject.SetData( "System.String", "Test" );
dataObject.SetData( "Text", "Test" );
dataObject.SetData( "UnicodeText", "Test" );
dataObject.SetData( "OEMText", "Test" );
dataObject.SetData( "TestData", new TestData() { Whatever = "NONONONONO", } );
Clipboard.SetDataObject( dataObject );
Using this construct you can set a Text using multiple "DataTypes" so whatever the application you want to paste to requires you have a value supplied. This way only the text shows up when pasting but hidden inside is also the additional data.
Sorry for putting this question up without researching to the end. Have a great day!
I have a C# program (actually it's just a C# library that is being used by NUnit) that I wish to modify slightly which is based off of this article: How to Programmatically move items in outlook. I'm currently faced with a folder that has bout 3500 messages all around 350kb and is taking FOREVER to move to my archive so I can send and receive emails again (since my inbox is currently at 1.5Gb out of 500Mb... lol) but for the life of me I can't figure out how to get my archive folder. I'm a little bit multitasking since I'm at work so I can edit as I go. So if you have any code readily available that finds the archive folder that would be great. Thank you
EDIT
ok to show that I do have some work in progress (based on negative feedback) here is the code I have in place right now (since yes I know I have a give me teh codez)
here is my NUnit test case that looks at a folder and gives me specific information
[Test]
public void CheckMessages()
{
List<EmailMessage> messages = new List<EmailMessage>();
using (var target = new EmailMessageProvider())
{
messages.AddRange(target.GetEmailMessages("UnexpectedErrors\\NotFindImage"));
}
Dictionary<int, string> asdf = new Dictionary<int, string>();
foreach (var item in messages)
{
var line = item.Body.Split(new string[] { Environment.NewLine }, StringSplitOptions.None)[2];
var revisionId = int.Parse(Regex.Match(line, #"\-*\d+").Value);
var path = line.Substring(line.IndexOf("\\\\"));
if (asdf.ContainsKey(revisionId))
{
Assert.That(path, Is.EqualTo(asdf[revisionId]));
}
else
{
asdf.Add(revisionId, path);
}
}
foreach (var item in asdf.OrderBy(x => x.Key))
{
Console.WriteLine($"{item.Key} {item.Value}");
}
}
I use the same class to find messages (in another test) and move it to that subfolder which that test is using.
here is the code I have that does the moving
public void MoveSurveyPrintComponentsNotFound()
{
var destination = _baseFolder.Folders["UnexpectedErrors"].Folders["NotFindImage"];
foreach (var mailItem in _baseFolder.Folders["UnexpectedErrors"].Items.OfType<MailItem>())
{
mailItem.UseMailItem(x =>
{
if (x.Body.Contains("Foobar.Common.Exceptions.ImageNotFound"))
x.Move(destination);
});
}
}
EDIT 2
looks like I may have just about got it. I found that in the MAPI Namspace one of the subfolders is Archives. I'm going to try to change a few of the variables and see if it moves. Problem is just checking one folder takes over 31 seconds. oh well. better than never.
I figured it out. It wasn't as hard as I had thought either so I'll share what i have just incase someone else has this problem. In my program I did 2 things. One was to set _basefolder as my default email address's Folder. Second was to to set _mapi to the Outlook.GetNamespace("MAPI"). Those two thinsg I already had in my constructor.
private readonly OutlookApplication _outlook;
private readonly NameSpace _mapi;
private MAPIFolder _baseFolder;
public EmailMessageProvider()
{
_outlook = new OutlookApplication();
_mapi = _outlook.GetNamespace("MAPI");
_baseFolder = _mapi.Folders["robert#defaultEmail.com"];
}
Archives works just like any other MAPIFolder so it's just a matter of getting said folder. For me it was in _mapi.Folders["Archive"]. I would imagine this is fairly standard so if you copy and paste it should work just fine.
So now to list out all of my emails I want to go through and move tham appropriatly.
public void MoveSpecificEmailsToArchives()
{
var destination = _mapi.Folders["Archives"];
foreach (var mailItem in _baseFolder.Folders["Unexpected Error"].Items.OfType<MailItem>())
{
mailItem.UseMailItem(x =>
{
if (x.Body.Contains("offensiveProgram.exe ERROR "))
x.Move(destination);
});
}
Release(destination);
}
fyi the UseMailItem is an extension method. Looks like this
public static void UseMailItem(this MailItem item, Action<MailItem> mailItemAction)
{
mailItemAction(item);
Marshal.ReleaseComObject(item);
}
The only solution I could find was using:
mshtml.HTMLDocument htmldocu = new mshtml.HTMLDocument();
htmldocu .createDocumentFromUrl(url, "");
and I am not sure about the performance, it should be better than loading the html file in a WebBrowser and then grab the HtmlDocument from there. Anyhow, that code does not work on my machine. The application crashes when it tries to execute the second line.
Has anyone an approach to achieve this efficiently or any other way?
NOTE: Please understand that I need the HtmlDocument object for DOM processing. I do not need the html string.
Use the DownloadString method of the WebClient object. e.g.
WebClient client = new WebClient();
string reply = client.DownloadString("http://www.google.com");
In the above example, after executed, reply will contain the html markup of the endpoint http://www.google.com.
WebClient.DownloadString MSDN
In an attempt to answer your actual question from four years ago (at the time of me posting this answer), I'm providing a working solution. I wouldn't be surprised if you found another way to do this, either, so this is mostly for other people searching for a similar solution. Keep in mind, however, that this is considered
somewhat obsolete (the actual use of HtmlDocument)
not the best way to handle HTML DOM parsing (the preferred solution is to use HtmlAgilityPack or CsQuery or some other method using actual parsing and not regular expressions)
extremely hacky and therefore not the safest/most compatible way to do it
you really should not be doing what I'm about to show
Additionally, keep in mind that HtmlDocument is really just a wrapper for mshtml.HTMLDocument2, so it is technically slower than just using a COM wrapper directly, but I completely understand the use case simply for ease of coding.
If you're cool with all of the above, here's how to accomplish what you want.
public class HtmlDocumentFactory
{
private static Type htmlDocType = typeof(System.Windows.Forms.HtmlDocument);
private static Type htmlShimManagerType = null;
private static object htmlShimSingleton = null;
private static ConstructorInfo docCtor = null;
public static HtmlDocument Create()
{
if (htmlShimManagerType == null)
{
// get a type reference to HtmlShimManager
htmlShimManagerType = htmlDocType.Assembly.GetType(
"System.Windows.Forms.HtmlShimManager"
);
// locate the necessary private constructor for HtmlShimManager
var shimCtor = htmlShimManagerType.GetConstructor(
BindingFlags.NonPublic | BindingFlags.Instance, null, new Type[0], null
);
// create a new HtmlShimManager object and keep it for the rest of the
// assembly instance
htmlShimSingleton = shimCtor.Invoke(null);
}
if (docCtor == null)
{
// get the only constructor for HtmlDocument (which is marked as private)
docCtor = htmlDocType.GetConstructors(
BindingFlags.NonPublic | BindingFlags.Instance
)[0];
}
// create an instance of mshtml.HTMLDocument2 (in the form of
// IHTMLDocument2 using HTMLDocument2's class ID)
object htmlDoc2Inst = Activator.CreateInstance(Type.GetTypeFromCLSID(
new Guid("25336920-03F9-11CF-8FD0-00AA00686F13")
));
var argValues = new object[] { htmlShimSingleton, htmlDoc2Inst };
// create a new HtmlDocument without involving WebBrowser
return (HtmlDocument)docCtor.Invoke(argValues);
}
}
To use it:
var htmlDoc = HtmlDocumentFactory.Create();
htmlDoc.Write("<html><body><div>Hello, world!</body></div></html>");
Console.WriteLine(htmlDoc.Body.InnerText);
// output:
// Hello, world!
I have not tested this code directly -- I have translated it from an old Powershell script that needed the same functionality you're requesting. If it fails, let me know. The functionality is there but the code might need very minor tweaking to get working.
I have a program that uses clipboard but I want to restore the clipboard to its former state after I am done with it.
This is my code :
IDataObject temp = Clipboard.GetDataObject();
//Some stuff that change Cliboard here
Clipboard.SetText("Hello");
//Some stuff that change Cliboard here
Clipboard.SetDataObject(temp);
But it if I copy a text, and run this code, I get nothing on notepad.
NOTE : I can't use Clipboard.Contains because I want to preserve the Clipboard EXACLY how it was before, even if the user copied a file.
I cannot confirm whether this will work, but I see no reason why you shouldn't be able to back up the data using the longer approach of actually reading the data and restoring it afterwards.
Read here: http://msdn.microsoft.com/en-us/library/system.windows.forms.idataobject.aspx
You would do something like (pseudo-code)
//Backup
var lBackup = new Dictionary<string, object>();
var lDataObject = Clipboard.GetDataObject();
var lFormats = lDataObject.GetFormats(false);
foreach(var lFormat in lFormats)
{
lBackup.Add(lFormat, lDataObject.GetData(lFormat, false));
}
//Set test data
Clipboard.SetText("asd");
//Would be interesting to check the contents of lDataObject here
//Restore data
foreach(var lFormat in lFormats)
{
lDataObject.SetData(lBackup[lFormat]);
}
//This might be unnecessary
Clipboard.SetDataObject(lDataObject);
Is your application exiting after resetting the clipboard?
Assuming it is a Win Form app. (not sure how it works in wpf though)
You could use one of the other overloaded version of Clipboard.SetDataObject
public static void SetDataObject(object data, bool copy)
which preserves the data even after your app exits.
ex: in your case after removing the text content you could call Clipboard.SetDataObject(iDataObject, true);
EDIT:2
I Could source step through Clipboard.cs .NET Frameword 4 / VS 2010.
Download the .NET Framework 4 from here http://referencesource.microsoft.com/netframework.aspx.
Follow the below steps and if it asks for the source (Clipboard.cs) it would be in the Source sub-dir of the installation dir.
EDIT:1
Not sure why the same code doesn't work.
Cannot be a security/permission issue as the code doesn't throw an exception as you say.
There is another approach - source stepping into Framework code - Clipboard.cs
Based on the VS version and .NET framework it may vary ( I couldn't get the source stepping work for .NET 4 as the info is that the symbols with source support haven't yet been released). I'm trying my luck by downloading it manually from here (.NET Version 4)
If you are running VS 2008 and older version of .NET then the below steps should work for you.
More details are here. For .NET Framework 4 - here
This cannot be done. You cannot backup/restore the clipboard without causing unintended consequences.
Please see my post on a similar question. My answer is the one that starts with "It's folly to try to do this".
How do I backup and restore the system clipboard in C#?
Furthermore, I suspect that your motivation for wanting to backup/restore the clipboard is because you want to use it as a crutch to move data, without the user's knowledge or consent. Please read:
http://www.clipboardextender.com/developing-clipboard-aware-programs-for-windows/common-general-clipboard-mistakes
and
http://www.flounder.com/badprogram.htm#clipboard
Lastly, please read and understand this quote:
“Programs should not transfer data into our out of the clipboard without an explicit instruction from the user.” — Charles Petzold, Programming Windows 3.1, Microsoft Press, 1992
I tested the pseudocode from Lukas and found out doesn't work always, this works in all my tests:
// Backup clipboard
lBackup = new Dictionary<string, object>();
lDataObject = Clipboard.GetDataObject();
lFormats = lDataObject.GetFormats(false);
foreach (var lFormat in lFormats)
{
lBackup.Add(lFormat, lDataObject.GetData(lFormat, false));
}
//Set test data
Clipboard.SetText("asd");
//Restore clipboard
lDataObject = new DataObject();
foreach (var lFormat in lFormats)
{
lDataObject.SetData(lFormat, lBackup[lFormat]);
}
//This might be unnecessary
Clipboard.SetDataObject(lDataObject);
I have had success with this.
...to a certain degree.
Where I am currently falling down is trying to copy and restore Bitmaps of varying size.
I can successfully copy and restore a Bitmap of smallish size.
I then tried to do the same for (as the fore-warning Chris Thornton suggested) a gargantuan Excel worksheet with both thousands of cell data, as well as two sets of data on a graph, lying on the same worksheet.
I have found that the data copies and restores without problem. Where it falls down in this instance is allowing the 2-set graph with the worksheet copy.
If any of you have had a problem in copying and restoring Bitmaps, let me suggest what worked for me: when attempting to restore the Clipboard, iterate through the list of formats in reverse order and set each data object that way. (i.e. It seems that a Clipboard must be set in reverse order that it was copied in)
Regarding the case of the gargantuan Excel worksheet and accompanying graph, I also hit another stumbling block: I could not successfully copy the data object whose format was "Meta Data File". That could be the reason why Copy/Restore doesn't work in this case.
I got this far about two weeks ago, and tabled it for more pressing issues.
I wanted to put this out there to let anyone else trying to do the same that it seems like it can be done. (anything can be done in computer science. anything.)
I compiled this code and it seems to work for me. I am persisting via converting to and from json. (Note. It will not do steams so adapt if you need it to)
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
namespace Clipboard
{
class Program
{
static void Main(string[] args)
{
Execute(() =>
{
var backup = Backup();
System.Windows.Forms.Clipboard.SetText("text"); //just to change clipboard
Restore(backup);
});
}
private static void Execute(Action action)
{
var thread = new Thread(() => action());
thread.SetApartmentState(ApartmentState.STA);
thread.Start();
thread.Join();
}
private static List<ClipboardItem> Backup()
{
var backup = new List<ClipboardItem>();
var data = System.Windows.Forms.Clipboard.GetDataObject();
System.Windows.Forms.Clipboard.SetDataObject(data, copy: true); //This seems to be needed to be able to serialize data later.
data = System.Windows.Forms.Clipboard.GetDataObject();
var formats = data.GetFormats(false).ToList();
formats.ForEach(f =>
{
if (data.GetData(f, false) != null && !(data.GetData(f, false) is Stream))
{
backup.Add(new ClipboardItem()
{
Format = f,
ObjectType = data.GetData(f, false).GetType(),
ObjectJson = JsonConvert.SerializeObject(data.GetData(f, false))
});
}
});
return backup;
}
private static void Restore(List<ClipboardItem> backup)
{
var data = new System.Windows.Forms.DataObject();
backup.ForEach(item =>
{
data.SetData(item.Format, JsonConvert.DeserializeObject(item.ObjectJson, item.ObjectType));
});
System.Windows.Forms.Clipboard.SetDataObject(data, copy: true);
}
}
public class ClipboardItem
{
public string Format { get; set; }
public Type ObjectType { get; set; }
public string ObjectJson { get; set; }
}
}