Contains an object field at offset position

TypeLoadException: Failed to remove from assembly “ECS.GUI.Define, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null” Load type in “ECS.GUI.Define.ArmgAimPos”, Because it is in 4 The offset contains an object field , The field has been improperly aligned or overlapped by a non object field

The keyword of the exception is ： stay 4 The offset contains an object field
By finding objects , The object is the Commons

    // StructLayout Enables the designer to control the physical layout of the data fields of a class or structure  
    // Explicit And FieldOffset Together, you can control the exact location of each data member  
    [StructLayout(LayoutKind.Explicit)]
    public struct ArmgAimPos
    {
    
        [FieldOffset(0)] public BayType type;
        [FieldOffset(4)] public string ContainerID;
        [FieldOffset(8)] public string JobID; 

Use FieldOffset Property implements Commons and casts

Initialize with the offset in the structure where the field starts FieldOffsetAttribute class .

c# 
public FieldOffsetAttribute (int offset);

Parameters

offset Int32

The offset from the beginning of the structure to the beginning of the field （ In bytes ）.

The concept that can be expressed is ： The principle is actually the same C++ equally , Will a int[] The variable of type is related to byte[] The same memory area as type variable , Follow C++ Lieutenant general dat Point to char The first address of the array is the same . Again , The function of such a structure is related to C++ The Commons of are the same , That is, a structure can be used as multiple data types , And the specific type depends on the situation .

Modify exception methods ：

As the prompt title shows ：4 Offset position , There is already a non object field , therefore , Move the offset backward to solve

    // StructLayout Enables the designer to control the physical layout of the data fields of a class or structure  
    // Explicit And FieldOffset Together, you can control the exact location of each data member  
    [StructLayout(LayoutKind.Explicit)]
    public struct ArmgAimPos
    {
    
        [FieldOffset(0)] public BayType type;
        [FieldOffset(8)] public string ContainerID; 
        [FieldOffset(16)] public string JobID; 

[ FieldOffset( 8)] public string ContainerID;
The offset is changed to 8 , Problem fix