Web Reference: I would like to dynamically add properties to a ExpandoObject at runtime. So for example to add a string property call NewProp I would like to write something like var x = new ExpandoObject (); x. Jan 9, 2024 · You can add properties, methods, and events to instances of the ExpandoObject class. The following code example demonstrates how to add a new property to an instance of the ExpandoObject class. Towards the end of this video, we will demonstrate adding dynamic properties using both the ExpandoObject and the DynamicObject to convert a CSV file to JSON.
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