Could not load file or assembly 'Syncfusion.SfTreeView.WPF

[kevin]

hi：
Error info:
System.IO.FileNotFoundException: Could not load file or assembly 'Syncfusion.SfTreeView.WPF, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89'. 系统找不到指定的文件。

File name: 'Syncfusion.SfTreeView.WPF, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89'

The application referring the wrong Framework assembly as following,

[Santhosh Govindasamy]

Hi kevin,

We would like to inform you that, This error indicates that the Syncfusion.SfTreeView.WPF assembly is missing or not properly referenced in the project. However, you can resolve the issue in any of the following ways.

Solution:1

We advise you to first delete the 'bin' and 'obj' folders of the application, then uninstall dependency packages. Afterward, install the required version of packages, ensuring that dependencies are installed in the same version. This should prevent the exception from being thrown, and the application will run successfully.

Solution:2

Your application contains a mismatched version of the Syncfusion.SfTreeView.WPF  assembly compared to other Syncfusion assemblies. Can you please check if the assemblies used in your sample have the same version as the Syncfusion product? If not, please make sure to refer to the same version assembly of the Syncfusion product.

Regards,
Santhosh.G

[kevin]

 Hi  Sa nthosh：

It is the same version component as Syncfusion product.

I tried soulution 1 but it didn't work

I deleted all the files in the. nuget folder and tried reinstalling them, but it still didn't work

the  project  debug  folder syncfusion product  version 28.2.11 

CODE:

 <Grid>

     <Grid.RowDefinitions>

         <RowDefinition Height="7*" />

         <RowDefinition Height="5" />

         <RowDefinition />

     </Grid.RowDefinitions>

     <sf:SfTreeView Name="SfTreeView"/>

     <sf:SfGridSplitter

         Grid.Row="1"

         Height="4"

         HorizontalAlignment="Stretch"

         VerticalAlignment="Top"

         ResizeBehavior="PreviousAndNext"

         ResizeDirection="Auto" />

 </Grid>

Through the test result, delete the that SfTreeView  normally runs

[Santhosh Govindasamy]

Hi kevin,

As previously mentioned, this error indicates that the Syncfusion.SfTreeView.WPF assembly is missing or not properly referenced in the project. However, you can resolve the issue using any of the following methods:

Check App.config:

Ensure that the App.config file does not specify any Syncfusion assembly versions. If specified, please remove the version information.

Set Copy Local to True:

To avoid runtime errors, set Copy Local to True for Syncfusion.SfTreeView.dll and all other Syncfusion assemblies. This ensures that the Syncfusion.SfTreeView.dll assembly is copied to the output folder or deployment folder of your application.

Reference Sample:

For your reference, we have attached a simple sample.

To proceed further, kindly confirm if you have applied a theme in your application. If yes, please share the details. If possible, try to replicate the issue using the provided sample — it will help us analyze the problem more effectively.

Regards,
Santhosh.G

Attachment: Sample_19ae86ce.zip

[Theodore Rushing]

It helped me, Thank you so much for the info.

[Santhosh Govindasamy]

Hi Theodore Rushing,

Thanks for your response,

We are glad to know that the shared information helped you a lot. Please let us know if you have any further queries on this. We are happy to help.

Regards,
Santhosh.G

[Theodore Rushing]

This error typically indicates a mismatch or missing reference for the Syncfusion.SfTreeView.WPF assembly. Ensure that all required Syncfusion assemblies, including dependencies like Syncfusion.SfGridCommon.WPF and Syncfusion.SfBusyIndicator.WPF, are correctly referenced in your project. If you're using NuGet packages, verify that all Syncfusion packages are of the same version to prevent conflicts. Additionally, consider using the Syncfusion Troubleshooter extension in Visual Studio to identify and resolve configuration issues automatically. This tool can help detect version mismatches and missing references. For more details, refer to the https://www.filemail.com/d/rppqyyfewaihxqr