C# Discussion Boards - CodeProject

Re: Why dictionary puts data inside [] mark?

Richard MacCutchan19-May-21 22:08

Richard MacCutchan

19-May-21 22:08

Took me less than a minute to see that:

pair.ToString()

returns the key and value surrounded by square brackets:

KeyValuePair<string, string> foo = new KeyValuePair<string, string>("foo", "bar");
Console.WriteLine(foo.ToString());

Output:

[foo, bar]

Re: Why dictionary puts data inside [] mark?

Alex Dunlop19-May-21 22:46

Alex Dunlop

19-May-21 22:46

Yeah, you're right.
Is there any way to avoid that or remove it?

Re: Why dictionary puts data inside [] mark?

jsc4219-May-21 23:58

jsc42

19-May-21 23:58

Good spot, @Richard_MacCutchan!

How about changing

string[] my_arr = pair.ToString().Split(',');
my_table_code.Rows.Add(my_arr[0], my_arr[1], my_arr[2]);

// This assumes that Key is a single text, not a comma separated list of values like the Value part
string[] my_arr = pair.Value.Split(',');    // Only split the Value (already a string, not the whole KeyValuePair
my_table_code.Rows.Add(pair.Key, my_arr[0], my_arr[1]);   // Prepend the key as the first item listed

?
Note: This is off the top of my head, not tested. Caveat Emptor.

modified 20-May-21 6:05am.

Re: Why dictionary puts data inside [] mark?

Richard MacCutchan20-May-21 0:50

Richard MacCutchan

20-May-21 0:50

Yes, just use the properties as described in the documentation: KeyValuePair<TKey,TValue> Struct (System.Collections.Generic) | Microsoft Docs[^]

Re: Why dictionary puts data inside [] mark?

BillWoodruff30-May-21 21:05

BillWoodruff

30-May-21 21:05

[] is the C# syntax for indexing: it's used with a numeric value for ordered Collections, and other types of values with Collections like Dictionary<TKey, TValue> that have no inherent ordinality.

That's just the way the language is.

«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali

Get folders like the one for mega, drop box

Duc Axenn19-May-21 11:35

Duc Axenn

19-May-21 11:35

Hi,

i would to make an explorer to add some methods i need behind. I tried a lot of things but many are deprecated. I'm under windows 10 x64. I want to make my app under .net core.

I tried SHGetSpecialFolderLocation but the name i retrieve is in chinese... i don't understand why. I saw with windows 10 it's better to use knownfolderid but i search in my registrykeys and i didn't find mega key, but it uses a clsid. Should it a good idea to ask to the registry or is there another method ?

i want to make something classic, with "mycomputer" root, make drives under it (it's ok for this part), have clouds folder also... And i will try to get default icons, i have some methods using win32.dll (if you have better i will happy to have more informations).

Re: Get folders like the one for mega, drop box

Dave Kreskowiak19-May-21 11:58

Dave Kreskowiak

19-May-21 11:58

You haven't explained any kind of problem you're having.

I'm going to guess that you're trying to use SHGetSpecialFolder location to get the paths to cloud folder. That will not work as they are not part of the Windows file system.

AFAIK, there is no standard method to get cloud folder paths. You'd have to write support modules for each cloud provider you want to support and ask the user for their username and password to get into those folders.

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Seriously, go read these articles.

Dave Kreskowiak

Re: Get folders like the one for mega, drop box

Duc Axenn19-May-21 13:45

Duc Axenn

19-May-21 13:45

hi, thanks for your answer.

I tried several things, even before i tried to read sources from this example

I used

IntPtr m_pIDL = IntPtr.Zero;
hRes = ShellAPI.SHGetSpecialFolderLocation(IntPtr.Zero, CSIDL.CSIDL_DESKTOP, ref m_pIDL);

but it's deprecated, so i used

hRes = ShellAPI.SHGetFolderLocation(IntPtr.Zero, 0, IntPtr.Zero,0, out m_pIDL);

For retrieve informations i used

SHFILEINFO shInfo = new SHFILEINFO();
ShellAPI.SHGetFileInfo(m_pIDL, 0, out shInfo, (uint)Marshal.SizeOf(shInfo),
    SHGFI.DisplayName | //0x000000200
    SHGFI.PIDL | //0x000000008
    SHGFI.SmallIcon |//0x000000001
    SHGFI.SystemIconIndex //0x000004000
);

But i get

畂敲畡

as display name, and 34 as iIcon in all cases. Which means "toc toc" (knocking) according to google translate.

I can't go more forward, i'm totally blind because of that.

This example is interesting because it give me what i need, i have one drive & mega folders and it seems there is no special instruction to have it, it lists elements by using

EnumObjects

This is why i would to use some elements under .net core and learn how to use windows api, instead of using c# with methods from Directory. If i understand well it's a handle (pointeur?).

SHFILEINFO

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
   public struct SHFILEINFO
   {
       public IntPtr hIcon;

       public int iIcon;

       public uint dwAttributes;

       [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
       public string szDisplayName;

       [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
       public string szTypeName;
   }

[DllImport("shell32.dll")]
//public static extern Int32 SHGetFolderLocation(IntPtr hwnd, int csidl, HANDLE hToken, DWORD dwFlags, PIDLIST_ABSOLUTE* ppidl);
public static extern int SHGetFolderLocation(IntPtr hwndOwner, int csidl, IntPtr hToken, uint dwReserved, out IntPtr ppidl);


[DllImport("shell32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr SHGetFileInfo(string path, uint attributes, out SHFILEINFO fileInfo, uint size, uint flags);

[DllImport("shell32.dll")]
public static extern IntPtr SHGetFileInfo(IntPtr pIDL, uint dwFileAttributes, out SHFILEINFO psfi, uint cbFileInfo, uint uFlags);
#endregion

modified 19-May-21 20:13pm.

Re: Get folders like the one for mega, drop box

Dave Kreskowiak19-May-21 14:34

Dave Kreskowiak

19-May-21 14:34

What's the return value from your SHGetFileInfo call. If it's 0, then some error occurred and you're going to have to use GetLastError to get the error code to see what happened.

Asking questions is a skill
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Google: C# How to debug code
Seriously, go read these articles.

Dave Kreskowiak

Re: Get folders like the one for mega, drop box

Duc Axenn19-May-21 21:27

Duc Axenn

19-May-21 21:27

Hi, i have an hexadecimal value for the return value.

I ask myself if i must continue to this way, i read somewhere else it was an old way to do it like a c++ copy/paste. I would to have something quick, with all default icons (i don't know another way for folders than to use win32.dll this is why i thought about make all with api methods)

Meanwhile, to go forward i found a way to get mega folders, i post here if it can help others.

var identity = System.Security.Principal.WindowsIdentity.GetCurrent();
string userName = identity.Name.ToString();
string userSID = identity.User.ToString();
List<string> MegaFolderPaths = new List<string>();

RegistryKey clsidKey = Registry.Users.OpenSubKey($"{userSID}\\Software\\Classes\\CLSID");

//Get all the sub keys it contains
foreach (string subKey in clsidKey.GetSubKeyNames())
{
    RegistryKey clsidSubKey = Registry.Users.OpenSubKey($"{userSID}\\Software\\Classes\\CLSID\\{subKey}\\Instance\\InitPropertyBag");

    if (clsidSubKey == null)
        continue;

    string defaultValue = (string)clsidSubKey.GetValue("TargetFolderPath");

    if (!string.IsNullOrEmpty(defaultValue))
        MegaFolderPaths.Add(defaultValue);
}

-------------------
Edit: for the chinese character i didn't see i forgot to add this

[DllImport("shell32.dll", CharSet = CharSet.Auto)]

above

public static extern Int32 SHGetFileInfo(IntPtr pIDL, uint dwFileAttributes,
                        out SHFILEINFO psfi, uint cbFileInfo, uint uFlags);

modified 21-May-21 3:29am.

Is ILMerge still used ?

Maximilien19-May-21 9:05

Maximilien

19-May-21 9:05

(beginner question)

I have a small app and a Class Library that generate a DLL and an EXE.

I read that I can use ILMerge to merge the DLL and EXE together.

The NuGet says the package is deprecated:

"This package has been deprecated as it is legacy and no longer maintained"

Is there something newer or another way to do this, merge the DLL and EXE ?

Thanks.

CI/CD = Continuous Impediment/Continuous Despair

Re: Is ILMerge still used ?

Dave Kreskowiak19-May-21 9:48

Dave Kreskowiak

19-May-21 9:48

GitHub - dotnet/ILMerge: ILMerge is a static linker for .NET Assemblies.[^]

Asking questions is a skill
CodeProject Forum Guidelines
Google: C# How to debug code
Seriously, go read these articles.

Dave Kreskowiak

String.Replace() & Regex.Replace() not working

Mou_kol15-May-21 22:40

Mou_kol

15-May-21 22:40

I am trying to replace a text with something. most often it works but for a particular text replace not working. here is the code example.

string maindata = "Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";
            string data =     "Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";

            //data = Regex.Escape(data);

            string strformula = Regex.Replace(maindata, "\"" + data.Replace("(", "\\(").Replace(")", "\\)").Replace("$", "\\$") + "\"", "W51",RegexOptions.IgnoreCase);
            strformula = maindata.Replace("\"" + data.Replace("(", "\\(").Replace(")", "\\)").Replace("$", "\\$") + "\"", "W51");

i tried both Regex.Replace() & String.Replace() but no luck. what is so special in the text "Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999" for which replace not working ?

please give me some direction. thanks

Re: String.Replace() & Regex.Replace() not working

Tony Hill15-May-21 23:30

Tony Hill

15-May-21 23:30

It might help if you could give some before and after examples, from what I can see nothing would change from the test data provided.

Do yourself a favour and don't chain the replace statements like that as it makes it difficult to see what is going on and almost impossible to debug and is a maintenance nightmare and is neither clever or helpful.

Split the whole line into discrete steps so you can examine what the before and after values are at each replace step.

Re: String.Replace() & Regex.Replace() not working

Mou_kol15-May-21 23:36

Mou_kol

15-May-21 23:36

Here i am posting simple replace. please run at your side then understand Replace() not able to replace.

string maindata = "Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";
string data =     "Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";
string strformula = Regex.Replace(maindata, data , "W51",RegexOptions.None);

try my above code and must notice replace not able to replace Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999 with W51

Thanks

Re: String.Replace() & Regex.Replace() not working

Tony Hill16-May-21 0:04

Tony Hill

16-May-21 0:04

You need to escape the unescaped + character in your data string.

Re: String.Replace() & Regex.Replace() not working

Mou_kol16-May-21 0:21

Mou_kol

16-May-21 0:21

This code solve my issue. thanks a lot for your reply.

string maindata = @"Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";
string data = @"Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";
data = Regex.Escape(data);
string strformula = Regex.Replace("\"" + maindata + "\"", "\"" + data.Replace("(", "\\(").Replace(")", "\\)").Replace("$", "\\$") + "\"", "W51", RegexOptions.None);

Re: String.Replace() & Regex.Replace() not working

OriginalGriff16-May-21 0:20

OriginalGriff

16-May-21 0:20

Regexes can get quite complicated, and many characters are "special" - they tell the expression engine to do something specific.
'+' is one of them: it means "One or more of the previous item":

^A\d+B$

Will match an 'A' followed by any number of digits other than zero, then a 'B'.
If you need to use a "special character" as a literal charcater, you need to escpae it by prefixing it with a backslash:

^A\d\+B$

Will match an 'A' followed by a single of digit, then a '+', then a 'B'.
A1+B will match, A12B will not.

If you are going to use regexes, the get a copy of Expresso[^] - it's free, and it examines and generates Regular expressions.
It'll help you a lot!

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Re: String.Replace() & Regex.Replace() not working

Mou_kol16-May-21 0:21

Mou_kol

16-May-21 0:21

This code solve my issue. thanks a lot for your reply.

string maindata = @"Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";
string data = @"Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";
data = Regex.Escape(data);
string strformula = Regex.Replace("\"" + maindata + "\"", "\"" + data.Replace("(", "\\(").Replace(")", "\\)").Replace("$", "\\$") + "\"", "W51", RegexOptions.None);

Re: String.Replace() & Regex.Replace() not working

Gerry Schmitz16-May-21 11:04

Gerry Schmitz

16-May-21 11:04

It's fun to chain .Replace but it keeps you from knowing what's happening from one to the next.

It's not any faster than using the occasional intermediate variable.

If you chain that many, at least put them on a separate line.

string strformula = Regex.Replace(maindata, "\"" + data
   .Replace("(", "\\(")
   .Replace(")", "\\)")
   .Replace("$", "\\$") + "\"", "W51",RegexOptions.IgnoreCase);

Then it should also be obvious that "data" should have it's own statement.

It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it.
― Confucian Analects: Rules of Confucius about his food

Bug in form font

Ismael Oliveira 202112-May-21 4:12

Ismael Oliveira 2021

12-May-21 4:12

Hi, folks.
I'm programing in C# in Visual Studio 11. I changed a form font to bold (unique change) but as I didn't like the efect, I tried to return the form to regular text, but VS didn't return the form to regular font, no matter what. I noticed it's impossible to go back. Does anyone know how to do this? What am I doing wrong?
Thanks.

Re: Bug in form font

Richard MacCutchan12-May-21 5:26

Richard MacCutchan

12-May-21 5:26

How did you change it, and how did you try to reset it?

Re: Bug in form font

OriginalGriff12-May-21 5:27

OriginalGriff

12-May-21 5:27

Snap!