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.

v9.5.0.90 24-Mar-2022sha256: 2ca8d112bc739207c303a81c59d6d190a62456f7f9a10a1a9e83ae05bcec7b42
64-bit Chilkat .NET for the 4.8.* Frameworks

v9.5.0.90 24-Mar-2022sha256: a70fda56d8521d8ed479b3901980768002aac15d06be1a339fc752f543d90544
32-bit Chilkat .NET for the 4.8.* Frameworks

v9.5.0.90 24-Mar-2022sha256: 0a86366f2d5ab97162c1d6be773a248819a88c18eb1588e49b2ffccc98a96280
64-bit Chilkat .NET for the 4.7.* Frameworks

v9.5.0.90 24-Mar-2022sha256: bb387d0e6c9297c582739229edf820da609adade729a7a4a666324dc88733aa4
32-bit Chilkat .NET for the 4.7.* Frameworks

v9.5.0.90 24-Mar-2022sha256: 3cb7f0a0215cf1b5bca78bdbad2735ad75c0322961ea209d038eaf382f0ffb0a
64-bit Chilkat .NET for the 4.6.* Frameworks (VS2017)

v9.5.0.90 24-Mar-2022sha256: 4e1e1e602e6a5d958318635436f237c8ee761c01ba170e7107f1a6a9f22d860a
32-bit Chilkat .NET for the 4.6.* Frameworks (VS2017)

v9.5.0.90 24-Mar-2022sha256: 906f1b0fcb05f8072986740fdb705ae1301a890f21feb309d6f85839b65cdf7e
64-bit Chilkat .NET for the 4.6.* Frameworks (VS 2015)

v9.5.0.90 24-Mar-2022sha256: eace91c3a1db58b5e30e2435021c172bb8da476884c3da995ae089cb60289d4d
32-bit Chilkat .NET for the 4.6.* Frameworks (VS 2015)

v9.5.0.90 24-Mar-2022sha256: 1c032f4309708904c0c85a7461892166dacca0607bf9c576aeeb12c15d54b5ec
64-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2013)

v9.5.0.90 24-Mar-2022sha256: cad7fc1a0328f0854ca3fdf77d446a2354761a63d7eae6a6842df26a430b243b
32-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2013)

v9.5.0.90 24-Mar-2022sha256: bdd01fed3ae19312265d15d3ec798f78e6629a2b9a582e02ea50f768045ec12c
64-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2012/2013)

v9.5.0.90 24-Mar-2022sha256: 08ce9b6e691e583654447f40f042ef894ca1d0ae2bae45fef24a41ef78e46537
32-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2012/2013)

v9.5.0.90 24-Mar-2022sha256: 0a7ae045e5e6448fcffb156b85d169c36012221bbf7e3a8569a028785d7e275e
64-bit Chilkat .NET for the 4.0 Framework
(Visual Studio 2010)

v9.5.0.90 24-Mar-2022sha256: be1845adc5d1665bfd10d170f2e14c1907c77b359c6309c1d7ed016bed41bb72
32-bit Chilkat .NET for the 4.0 Framework
(Visual Studio 2010)

v9.5.0.90 24-Mar-2022sha256: 1bbe7180b66fa3eb51d2490802ef99a1333d081bb87d615623c81de1c48bf7b4
64-bit Chilkat .NET for the 2.0/3.5 Frameworks
(Visual Studio 2005/2008)

v9.5.0.90 24-Mar-2022sha256: add34199b1ca41a4350dadd170b3255d7397daab86e04a30c980f5b77765e979
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