ConfigurationElement.SetReadOnly Method
.NET Framework 4.6 and 4.5
Sets the IsReadOnly property for the ConfigurationElement object and all subelements.
Namespace: System.Configuration
Assembly: System.Configuration (in System.Configuration.dll)
This method is used internally to set aside those system-configuration elements that cannot be modified.
To determine which elements can be modified, use the IsReadOnly method.
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