Chilkat for .NET Framework Downloads

The downloads on this page are the full-versions.
Chilkat components are fully functional for 30-day evaluations.

Chilkat Available in NuGet

Chilkat .NET Packages are also available via NuGet.
  • View Chilkat NuGet packages at https://www.nuget.org/profiles/chilkat
  • Choose "chilkat-x64" if targeting x64 or "Any CPU" with the "Prefer 32-bit" checkbox unchecked in project settings.
  • Choose "chilkat-win32" if targeting x86 or "Any CPU" with the "Prefer 32-bit" checkbox checked in project settings.
  • An "incorrect format" error indicates the wrong choice was made.
  • Important: Read about the Common Errors before downloading and testing for the 1st time.

Using Chilkat in ASP.NET on Shared Hosting

The Chilkat .NET assembly requires full trust. Add the following to your web.config:

<system.web>
    ...
    <trust level="Full" />
    ...
</system.web>

Chilkat .NET Framework Downloads

All Chilkat .NET classes are contained in a single assembly (DLL)

Important: Read about the Common Errors before downloading and testing for the 1st time.

v9.5.0.93 18-Nov-2022sha256: 2e6257a77f56fa245045da7148e8e04920b987712c709b62ad3908b9739b0073
64-bit Chilkat .NET for the 4.8.* Frameworks

v9.5.0.93 18-Nov-2022sha256: 4d109f90d870dd823e8215fc0defe226f91e5ce135201c26061ffc1cd0b783b2
32-bit Chilkat .NET for the 4.8.* Frameworks

v9.5.0.93 18-Nov-2022sha256: b075fa56324474d5985cbc28b868ff6f28e8edbeff9cffc882ddd00f5393bf14
64-bit Chilkat .NET for the 4.7.* Frameworks

v9.5.0.93 18-Nov-2022sha256: debd02a2a4069aca0139583f257663e0097a9432f3dbb25b22df280e30091436
32-bit Chilkat .NET for the 4.7.* Frameworks

v9.5.0.93 18-Nov-2022sha256: 92655b805d45198343626c3b88da2ad7920ddfd575e6c302fd30bba5e98b103c
64-bit Chilkat .NET for the 4.6.* Frameworks (VS2017)

v9.5.0.93 18-Nov-2022sha256: 3004a0b869e0ea7f991ea05a652975c9758d1daddcfa9c2a9635a120d2a1e6b0
32-bit Chilkat .NET for the 4.6.* Frameworks (VS2017)

v9.5.0.93 18-Nov-2022sha256: 2e6916f263d059c69f107c33e5694f5a30e9a7418bb000a2391152a9e13959e0
64-bit Chilkat .NET for the 4.6.* Frameworks (VS 2015)

v9.5.0.93 18-Nov-2022sha256: 85e4d1aa4e2796b2534dbc5bfa8a908f63fadd6aad0d4fec056cc3631c332833
32-bit Chilkat .NET for the 4.6.* Frameworks (VS 2015)

v9.5.0.93 18-Nov-2022sha256: b5fdbedbcf5b333adf77824850425902494942195b19709e5ee6bf8e544f034f
64-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2013)

v9.5.0.93 18-Nov-2022sha256: 95979fee186a3a727fdc2a0fa68ae1a3dc8ac0e3dbee673c4d158146bf0ccd13
32-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2013)

v9.5.0.93 18-Nov-2022sha256: af7e45be5314d282c0bf5c300e78ee5bbaf45b92f703d8b45684ca1c742e77a2
64-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2012/2013)

v9.5.0.93 18-Nov-2022sha256: b54731d55e8bf7fc3661f5e5318011771c18213709a4efaf95d828240f7ee6b8
32-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2012/2013)

v9.5.0.93 18-Nov-2022sha256: 580073725cd2243ae02eac1709758c357cb0e3d560ca7d63dcd9e8f433621f55
64-bit Chilkat .NET for the 4.0 Framework
(Visual Studio 2010)

v9.5.0.93 18-Nov-2022sha256: 86c620c0462b6a105475b35a159ae7690e99d335e1dac43e7ed56326a8fee869
32-bit Chilkat .NET for the 4.0 Framework
(Visual Studio 2010)

v9.5.0.93 18-Nov-2022sha256: e098ca5bfea0e886c32d137b944bc371e80d40fd3a2bb4644923ce19bb1ae58f
64-bit Chilkat .NET for the 2.0/3.5 Frameworks
(Visual Studio 2005/2008)

v9.5.0.93 18-Nov-2022sha256: 6b1d98a744c19f065ace877a58255eb0c54e622828c342a048bc4d7e0ad59bb9
32-bit Chilkat .NET for the 2.0/3.5 Frameworks
(Visual Studio 2005/2008)


Install Instructions

Download and unzip to any directory. There is no "install". To use the Chilkat .NET assembly in a Visual Studio project, add a reference to the Chilkat DLL (such as ChilkatDotNet48.dll). (When adding the reference, Browse to the location of the Chilkat DLL and select it.)

Common Error #1: Incorrect Format

An application running in a 32-bit process must load the 32-bit Chilkat DLL, and an application running in a 64-bit process must load the 64-bit DLL. If a 32-bit process tries to load a 64-bit DLL, or the reverse, then an "Incorrect Format" error occurs:

Could not load file or assembly 'ChilkatDotNet**' or one of its dependencies. 
An attempt was made to load a program with an incorrect format.

Solutions:

  • Target your app for x86 instead of "Any CPU". Your application will run as a 32-bit process regardless of the machine architecture and you can always use the 32-bit Chilkat assembly.
  • In your Project Properties (for Visual Studio 2011 or later), in the Build tab, look for the "Prefer 32-bit" checkbox. If it is checked, then your application will always run as 32-bit, even if "Any CPU" is targeted. Thus you will always need to reference the 32-bit assembly.
  • If your app targets "Any CPU", then it will run as a 32-bit process on a 32-bit computer, or a 64-bit process on a 64-bit computer (assuming "Prefer 32-bit") is unchecked. In this case, make sure to deploy the 32-bit Chilkat assembly w/ your app on 32-bit systems, and deploy the 64-bit Chilkat assembly to 64-bit systems. Nowadays, 32-bit Windows computers are very old and unlikely to be encountered. For in-house applications where you know all computers are 64-bit (i.e. not extremely old), then it is sufficient to assume 64-bit, Any CPU, and "Prefer 32-bit" unchecked.
  • If your app is running within ASP.NET or a Windows Service and you're not quite sure whether it's 32-bit or 64-bit, then install the 32-bit Chilkat assembly in the 32-bit GAC (Global Assembly Cache), and also install the 64-bit Chilkat assembly into the 64-bit GAC. The .NET runtime will automatically look in the correct GAC and will find the correct assembly.

Common Error #2: The specified module could not be found.

Could not load file or assembly 'ChilkatDotNet**.dll' or one of its dependencies. 
The specified module could not be found.

This error occurs if the needed VC++ runtime redist is not already installed on the system.
The solution is to download and install the needed runtime redist from Microsoft VC++ Runtime Redist Downloads.

  • If using the .NET 4.6, 4.7, or 4.8 Frameworks, choose the Microsoft VC++ runtime redist download for Visual Studio 2015, 2017 and 2019 (there is a single download for all three).
  • If using .NET 4.5 with VS2013, choose the "Visual Studio 2013 (VC++ 12.0)" runtime redist.
  • If using .NET 4.5 with VS2012, choose the "Visual Studio 2012 (VC++ 11.0)" runtime redist.
  • If using .NET 4.0, choose the "Visual Studio 2010 (VC++ 10.0) SP1" runtime redist.
  • If using .NET 2.0, download the VC++ 2005 runtime redist from VC++ 2005 Runtime Redist

Reference Documentation

Online Reference Documentation is located at Chilkat Documentation.

Sample Code

Online examples are located at Chilkat Example Code