.net - Get unsafe pointer to array of KeyValuePair<DateTime,decimal> in C# -

i have big arrays of keyvaluepair<datetime,decimal>. know in memory array contiguous since kvp value type, datetime int64, , decimal array of 4 ints (and won't change). however, datetime not blittable, , decimal not primitive.

is there any way abuse type system , unsafe pointer array , work bytes? (gchandle.alloc cannot work these 2 types when part of structure, works ok arrays of type.)

(if interested why, convert array manually believe 1-to-1 byte[] representation, , slow)

finally, there public tool: system.runtime.compilerservices.unsafe package.

below passing test:

using system.runtime.compilerservices.unsafe; [test] public unsafe void couldusenewunsafepackage() {     var dt = new keyvaluepair<datetime, decimal>[2];     dt[0] = new keyvaluepair<datetime, decimal>(datetime.utcnow.date, 123.456m);     dt[1] = new keyvaluepair<datetime, decimal>(datetime.utcnow.date.adddays(1), 789.101m);     var obj = (object)dt;     byte[] asbytes = unsafe.as<byte[]>(obj);     //console.writeline(asbytes.length); // prints 2     fixed (byte* ptr = &asbytes[0]) {         // reading this: https://github.com/dotnet/coreclr/issues/5870         // looks fix byte[] , keyvaluepair<datetime, decimal> fixed         // because:         // "gc not care exact types, e.g. if type of local object          // reference variable not compatible stored in it,          // gc still track fine."         (int = 0; < (8 + 16) * 2; i++) {             console.writeline(*(ptr + i));         }         var firstdate = *(datetime*)ptr;         assert.areequal(datetime.utcnow.date, firstdate);         console.writeline(firstdate);         var firstdecimal = *(decimal*)(ptr + 8);         assert.areequal(123.456m, firstdecimal);         console.writeline(firstdecimal);         var seconddate = *(datetime*)(ptr + 8 + 16);         assert.areequal(datetime.utcnow.date.adddays(1), seconddate);         console.writeline(seconddate);         var seconddecimal = *(decimal*)(ptr + 8 + 16 + 8);         assert.areequal(789.101m, seconddecimal);         console.writeline(seconddecimal);     } }