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GeneralRe: Question About Async Pin
Richard Deeming30-Sep-21 5:41
mveRichard Deeming30-Sep-21 5:41 
GeneralRe: Question About Async Pin
Kevin Marois30-Sep-21 5:48
professionalKevin Marois30-Sep-21 5:48 
GeneralRe: Question About Async Pin
Richard Deeming30-Sep-21 6:05
mveRichard Deeming30-Sep-21 6:05 
GeneralRe: Question About Async Pin
Kevin Marois30-Sep-21 6:20
professionalKevin Marois30-Sep-21 6:20 
AnswerRe: Question About Async Pin
Richard Deeming29-Sep-21 22:54
mveRichard Deeming29-Sep-21 22:54 
GeneralRe: Question About Async Pin
Kevin Marois30-Sep-21 5:23
professionalKevin Marois30-Sep-21 5:23 
QuestionMakeGenericType/CreateInstance Object to underlying Type at run-time: why this works is driving me crazy Pin
BillWoodruff28-Sep-21 6:45
mveBillWoodruff28-Sep-21 6:45 
AnswerRe: MakeGenericType/CreateInstance Object to underlying Type at run-time: why this works is driving me crazy Pin
Richard Deeming28-Sep-21 7:20
mveRichard Deeming28-Sep-21 7:20 
dynamic uses late-binding. Behind the scenes, it will use reflection to find and invoke the appropriate Add method on the run-time type of the object, with a suitable sprinkling of call-site caching to improve performance.

Simon Cooper published a series of blog posts on that topic back in 2012:
Inside the DLR - Callsites - Simple Talk[^]
Inside the DLR - Callsite binders - Simple Talk[^]
Inside the DLR - Invoking methods - Simple Talk[^]

NB: For the generic collections, you can probably avoid the DLR overhead by using the non-generic interfaces instead:
C#
Type unboundType = typeof(Dictionary<,>);
Type[] typeArgs = { typeof(string), typeof(string) };
Type constructedType = generic.MakeGenericType(typeArgs);

IDictionary instance = (IDictionary)Activator.CreateInstance(constructedType);
instance.Add("1", "2");




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GeneralRe: MakeGenericType/CreateInstance Object to underlying Type at run-time: why this works is driving me crazy Pin
BillWoodruff28-Sep-21 10:47
mveBillWoodruff28-Sep-21 10:47 
AnswerRe: MakeGenericType/CreateInstance Object to underlying Type at run-time: why this works is driving me crazy Pin
OriginalGriff28-Sep-21 7:30
mveOriginalGriff28-Sep-21 7:30 
GeneralRe: MakeGenericType/CreateInstance Object to underlying Type at run-time: why this works is driving me crazy Pin
BillWoodruff28-Sep-21 11:19
mveBillWoodruff28-Sep-21 11:19 
GeneralRe: MakeGenericType/CreateInstance Object to underlying Type at run-time: why this works is driving me crazy Pin
OriginalGriff28-Sep-21 11:40
mveOriginalGriff28-Sep-21 11:40 
GeneralRe: MakeGenericType/CreateInstance Object to underlying Type at run-time: why this works is driving me crazy Pin
BillWoodruff29-Sep-21 1:57
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Questionled matrix display Pin
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QuestionC# 8 nullable reference question / conundrum Pin
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QuestionConvering time representation format Pin
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Richard Deeming22-Sep-21 2:37
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GeneralRe: Convering time representation format Pin
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