BadImageFormatException:PInvoke importdell with hdf5dll.dll

在我的类中,我有一些关于本机调用的包装器 H5 , H5LT , H5F ,和 H5T . H5.cs示例:

namespace HDF5
{
    using hid_t = System.Int32;
    using herr_t = System.Int32;
    using hsize_t = System.UInt64;
    using size_t = System.UInt32;
    // hbool_t is 0:false, +:true
    using hbool_t = System.UInt32;
    // htri_t is 0:false, +:true, -:failure
    using htri_t = System.Int32;

    public class H5
    {
        const CharSet StringMarshallingType = CharSet.Ansi;
        const string DLLNAME = "hdf5dll.dll";

        ///* Functions in H5.c */
        //H5_DLL herr_t H5open(void);
        [DllImport(DLLNAME,
            CharSet = StringMarshallingType)]
        public static extern herr_t H5open();