Type 'zipinputstream' exists in both 'cadimport, version=14.1.0.47042 and 'icsharpcode.sharpziplib, version=0.85.2.329

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Im using CADImport dll 14 version for dwg image viewer but when i add the dll im getting error in ICSharpCode.SharpZipLib for ZipInputStream method

Severity	Code	Description	Project	File	Line	Suppression State
Error	CS0433	The type 'ZipInputStream' exists in both 'CADImport, Version=14.1.0.47042, Culture=neutral, PublicKeyToken=e66eb7f6b40a44a2' and 'ICSharpCode.SharpZipLib, Version=0.85.2.329, Culture=neutral, PublicKeyToken=1b03e6acf1164f73'	DMSWin	E:\DMS\Development\DMSWin\Utility\DMSZip.cs	19	Active

What I have tried:

I have added whole name space when calling the ZipInputStream method

FileStream fr = File.OpenRead(fileName);
  var ins = new ICSharpCode.SharpZipLib.Zip.ZipInputStream(fr);

Posted 15-Feb-21 0:12am

Member 12966735

Updated 15-Feb-21 2:02am

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RickZeeland · Answer 1 · 2021-02-15T02:02:00

You can give one of the dll's an alias, this can be done in:
Solution Explorer - references
Set Aliases property from Global to "yourname"

Or add using statements with an alias like:

using MySharpZipLib = ICSharpCode.SharpZipLib.Zip;

And yet another way would be to put the dll in it's own subfolder and modify the .config file like explained here: ICSharpCode.SharpZipLib.DLL and SharpZipLib.DLL conflict in DNN7[^]

<dependentAssembly xmlns="urn:schemas-microsoft-com:asm.v1">
        <assemblyIdentity name="ICSharpCode.SharpZipLib" />
        <codeBase version="0.81.0.1407" href="SharpZipLib/SharpZipLib.dll" />
      </dependentAssembly>