c# - How to get Length of array using reflector -

i have library , console program, library dynamically. in library on class exist int array. so. can on program, use reflector array? code of library:

public class class1 {     public int [] arrayint;     public class1()     {         arrayint = new int[5] {1,2,3,4,5};     } } 

this code of program:

    assembly asm = assembly.loadfile(@"c:\testlibrary.dll");     type class1 = asm.gettype("testlibrary.class1") type;     var testclass = activator.createinstance(class1);                     propertyinfo list = class1.getproperty("arrayint");     int[] arraytest = (int[])list.getvalue(testclass, null);//throw exception here     console.writeline("length of array: "+arraytest.count);     console.writeline("first element: "+arraytest[0]); 

you exception because public int[] arrayint; not property member variable, class1.getproperty(...) returns null.

alternative 1) use getmember instead of getproperty

memberinfo list = class1.getmember("arrayint"); 

alternative 2) declare property in class1

public int[] arrayint  {      { return arrayint;  } } 

and change ethe reflection code to:

propertyinfo list = class1.getproperty("arrayint"); 

also, please note code shouldn't compile, array not have count property, length property. following line should give compilation error:

console.writeline("length of array: "+arraytest.count); 

and should read

console.writeline("length of array: "+arraytest.length);