Hi Dariusz,
Thanks for contacting Syncfusion support.
We suspect that your reported problem might be due to the conflict with the assembly version or the improper script reference. Kindly ensure the following cases,
1. Ensure the control’s dependency scripts and CSS referred in your web page is proper.
2. Ensure whether the “ScriptManager” is added in the “Site.Master” or else add the “ScriptManager” to your web page.
3. Ensure Syncfusion Assemblies are registered within the Web.config with proper versions in both web.config as well as in your aspx page where the control is defined.
Refer the below code to register the syncfusion assemblies in web.config,
<Code>
<system.web>
<compilation debug="true" strict="false" explicit="true" targetFramework="4.6">
<assemblies>
<add assembly="Syncfusion.EJ, Version=14.4460.0.20, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89" />
<add assembly="Syncfusion.EJ.Web, Version=14.4460.0.20, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89" />
</assemblies>
</compilation>
<httpRuntime targetFramework="4.6"/>
</system.web>
</Code>
.
We have prepared the simple Schedule sample which can be downloaded from the below location,
Refer the below link for the integration of syncfusion asp.net controls into the existing application,
Refer the below link to render schedule control in application,
Kindly check the above sample and let us know, if it helps and also if you need any further assistance on this.
Regards,
Mahesh