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.

v9.5.0.97 27-Jan-2024sha256: 2b4b31d0322f3b6d7e32a0640c1b428afddc2fa66ba64a2149a40ab9bb854e37
64-bit Chilkat .NET for the 4.8.* Frameworks

v9.5.0.97 27-Jan-2024sha256: c17969d49ab643241094cd088d5f9b9fbb6ffdc1b0c71a4330115db9d8fd082e
32-bit Chilkat .NET for the 4.8.* Frameworks

v9.5.0.97 27-Jan-2024sha256: 7ffbec2cea0bac2ad461b09e622baacc003ebb346b94f4794740e8cab7857a35
64-bit Chilkat .NET for the 4.7.* Frameworks

v9.5.0.97 27-Jan-2024sha256: 21dcdecb907ea25c86d5b663ad0897636547597f4881b6bd25c3fe416887ff42
32-bit Chilkat .NET for the 4.7.* Frameworks

v9.5.0.97 27-Jan-2024sha256: 470af97835fae057ffca25f070733e926c1a642dd69164bf24323e1dd11625f6
64-bit Chilkat .NET for the 4.6.* Frameworks (VS2017)

v9.5.0.97 27-Jan-2024sha256: 1fbce6614f80c1211f253b6eff792eedba61be861e3bf6be2fd8825de896d28f
32-bit Chilkat .NET for the 4.6.* Frameworks (VS2017)

v9.5.0.97 27-Jan-2024sha256: 829404e5f101deae2a50cd92c5d21759e1f407ab58f7c937885d34d3fbdaf9fe
64-bit Chilkat .NET for the 4.6.* Frameworks (VS 2015)

v9.5.0.97 27-Jan-2024sha256: ba5b234e9aa737bedf8486a758e80480410bfb24e9698bf143233ef5a11ae308
32-bit Chilkat .NET for the 4.6.* Frameworks (VS 2015)

v9.5.0.97 27-Jan-2024sha256: 6e6320a73e888a920090b3197c4f5535afd1a57f56ef2c3c6d6ab570cd657921
64-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2013)

v9.5.0.97 27-Jan-2024sha256: b0211b8a87b9eac68a0717bc5be7605acd594413427488d68f7ccd3a626bd5d9
32-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2013)

v9.5.0.97 27-Jan-2024sha256: e7ae946f3c86c17f5b5183d7db158ec07e253c495e924547fbccc6133057e0e8
64-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2012/2013)

v9.5.0.97 27-Jan-2024sha256: db3b18ac17095a4639965e93cec691e77d4e24d216fe1487688c65b5cce85ff8
32-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2012/2013)

v9.5.0.97 27-Jan-2024sha256: 32030573523479b4e9b4441f215a2f254925ec692545cc1f51227113617e4726
64-bit Chilkat .NET for the 4.0 Framework
(Visual Studio 2010)

v9.5.0.97 27-Jan-2024sha256: b464cb968b34d674f5e6c7e87562280a54cea00de5b79495107e0a52ac447c40
32-bit Chilkat .NET for the 4.0 Framework
(Visual Studio 2010)

v9.5.0.97 27-Jan-2024sha256: ec83c71c5b0279211a9ae752f512c687b2938a336d787e793575d055465496a2
64-bit Chilkat .NET for the 2.0/3.5 Frameworks
(Visual Studio 2005/2008)

v9.5.0.97 27-Jan-2024sha256: 2d04ff2507ef368d0810e75fa80fcef15556d945849d5ce0c430e07801ba25ab
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