Dynamically create an array and set the elements

c# arrays reflection activator createinstance
uzay95 picture uzay95 · Jan 26, 2012 · Viewed 9.6k times · Source

This can create an array dynamically:

Assembly asm = object.GetType().Assembly;
string sTypeName = "Company.Namespace.ClassName";
object arrayWithSize1 = Activator.CreateInstance( asm.GetType(sTypeName), 1 );

But how does set the first element of array which is created above?

Answer

Ani picture Ani · Jan 26, 2012

You can use Array.SetValue:

 // How are you going to create this? Activator.CreateInstance?
 object instance = ...

 // Create one-dimensional array of length 1.
 Array arrayWithSize1  = Array.CreateInstance(asm.GetType(sTypeName), 1);

 // Set first (only) element of the array to the value of instance.
 arrayWithSize1.SetValue(instance, 0);

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