Join specific bits

Question

I have dto object Data with 2 property: int Value and int Width. I have list<Data> DataList. I have byte[] Result.

I need to process this list like that:

foeach(var data in DataList)
{
     var byteData = BitConverter.GetBytes(data.Value); //result 4 bytes length a
     //Than i need to copy bits starting from hight (left) from byteData to Result, equal to data.Width.
     //So if DataList have 2 elements: DataList[0] with Value = 11101000 00000000 00000000 00000000 and Width = 5
     // and DataList[1] with Value = 11000111 11011000 00000000 00000000 and Width = 9

     //result should be 11101110 00111100
}