How to access a .resx file content programmatically?

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In my project i have added a Resources.resx file which may / may not contain a .zip file
So i have to check if that .zip exists=) then read that to a byte[] else no action.

What I have tried:

C#

var resourcedata = Resources.ResourceManager.GetObject("test");
if (resourcedata != null)
{                       
 byte[] zipFile;
 BinaryFormatter bf = new BinaryFormatter();                        
 using (MemoryStream ms = new MemoryStream())
 {
   bf.Serialize(ms, resourcedata);
   zipFile = ms.ToArray();
  
 }

System.IO.File.WriteAllBytes(myPath, zipFile);
ZipFile.ExtractToDirectory(myPath, targetPath);
}

Working fine,.zip file copied to "myPath"
but issue arise when tried to extract programmatically ,Showing exception like
"Number of entries expected in End Of Central Directory does not correspond to number of entries in Central Directory"

Am i doing the right way?or is there any better way to implement this??
Please help.

Posted 19-Jan-21 7:07am

Member 14978771

Updated 19-Jan-21 10:48am

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Alan N 19-Jan-21 18:30pm

What is the resource 'test'? I would expect it to be the contents of a zip file stored as byte[] in which case the correct way to get it back would be to cast 'resourcedata', e.g. byte[] zipcontent = resourcedata as byte[].

Your use of a BinaryFormatter to serialise the 'resourcedata' cannot be correct and will only transform it into something which is definitely not a zipfile.

Member 14978771 20-Jan-21 10:17am

Thank you so much for the clarification and that worked perfect. :)

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RickZeeland · Answer 1 · 2021-01-19T07:43:00

Solution 1

Maybe you can use embedded resources, see this CodeProject tip:
Embed Resources in .NET Assemblies[^]

More information here: Working with .resx Files Programmatically | Microsoft Docs[^]

The problem could also be caused when a compression format is used that is unknown to the ZipFile.ExtractToDirectory() method, see:
ZipFile.ExtractToDirectory Method (System.IO.Compression) | Microsoft Docs[^]

Posted 19-Jan-21 7:43am

RickZeeland

Updated 19-Jan-21 7:55am

v3

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Member 14978771 20-Jan-21 10:07am

I can't use 'Resources.myfile' in my project directly since it can/cannot be added to the .resx file. That's why I need an alternate way where I can use my resource file name as a string representation. Is there any way to do so?

raddevus · Answer 2 · 2021-01-19T10:48:00

Solution 2

Did you check this out?
c# - End of Central Directory record could not be found - Stack Overflow[^]

Posted 19-Jan-21 10:48am

raddevus