Retrieves a String value from the SerializationInfo store.
member GetString :
name:string -> string
The name associated with the value to retrieve.
name is a null reference (Nothing in Visual Basic).
The value associated with name cannot be converted to a String.
An element with the specified name is not found in the current instance.
If the value is a String, or can be converted to a String, that value is returned; otherwise, a InvalidCastException is thrown. All conversions are done by the IFormatterConverter associated with this SerializationInfo.