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.

v9.5.0.84 28-Sep-2020sha256: 03b1eec1a0d8c83c76d0f45005764383ecc735a550c739e5d5f67702df1d8228
64-bit Chilkat .NET for the 4.8.* Frameworks

v9.5.0.84 28-Sep-2020sha256: 6b41ce798321ee46437b06a3f440a18584aee1d7916fc1163f03e6bef35ea090
32-bit Chilkat .NET for the 4.8.* Frameworks

v9.5.0.84 28-Sep-2020sha256: 70a468ee31bd0d651164315ffcd54945275eef4f9807e45874bbac5715029900
64-bit Chilkat .NET for the 4.7.* Frameworks

v9.5.0.84 28-Sep-2020sha256: e8f68129578dec1e9adae37e76433d1dde874f2eb5a38f8b56b948d358adf717
32-bit Chilkat .NET for the 4.7.* Frameworks

v9.5.0.84 28-Sep-2020sha256: d960567a28d83ad9169d231a87adb6b0ed7f586bc638bb9df967048a671f78d5
64-bit Chilkat .NET for the 4.6.* Frameworks (VS2017)

v9.5.0.84 28-Sep-2020sha256: f1490ce482b89b0dece8d039ca435eec3fc5396b5b0ca13a426d25110c9ba346
32-bit Chilkat .NET for the 4.6.* Frameworks (VS2017)

v9.5.0.84 28-Sep-2020MD5 Sum: 99a00d6edcdda35a8fa702aeec91b4de
64-bit Chilkat .NET for the 4.6.* Frameworks (VS 2015)

v9.5.0.84 28-Sep-2020MD5 Sum: 78d859e6f2831be0f88748118f3a05dc
32-bit Chilkat .NET for the 4.6.* Frameworks (VS 2015)

v9.5.0.84 28-Sep-2020MD5 Sum: c8d545bf24aae95ac8961382b4ee1b5e
64-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2013)

v9.5.0.84 28-Sep-2020MD5 Sum: 11386e79adc42c5c73f1bb02f97cad39
32-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2013)

v9.5.0.84 28-Sep-2020MD5 Sum: 53095a3a8e3f60715f1e421e7bf2468c
64-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2012/2013)

v9.5.0.84 28-Sep-2020MD5 Sum: c3d36bee19adeef0f787581973215b11
32-bit Chilkat .NET for the 4.5.* .NET Frameworks
(Visual Studio 2012/2013)

v9.5.0.84 28-Sep-2020MD5 Sum: 8b64074f16da2fb7eec4b4d49f377282
64-bit Chilkat .NET for the 4.0 Framework
(Visual Studio 2010)

v9.5.0.84 28-Sep-2020MD5 Sum: 980896a1dd7e2788e8266015b8820dbe
32-bit Chilkat .NET for the 4.0 Framework
(Visual Studio 2010)

v9.5.0.84 28-Sep-2020MD5 Sum: 65b54b0a75111bd94a9ab98cfbda97f9
64-bit Chilkat .NET for the 2.0/3.5 Frameworks
(Visual Studio 2005/2008)

v9.5.0.84 28-Sep-2020MD5 Sum: b50b2a32741baa722910f0b5bb2aef92
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