SPWebApplication.AllowPartToPartCommunication property

Gets or sets a value indicating whether the Web application allows Web Parts to communicate with each other.

Namespace:  Microsoft.SharePoint.Administration
Assembly:  Microsoft.SharePoint (in Microsoft.SharePoint.dll)

public bool AllowPartToPartCommunication { get; set; }

Property value

Type: System.Boolean
true if Web Parts are allowed to communicate with each other; otherwise, false. The default value is true.