/** get the root group and all the alone objects */
private void getRootGroup()
{
sw.Restart();
//LoadVgroups(_file_id);//暂时取消加载整个树结构，目前这个加载比较慢，暂时也用不着。
sw.Stop();
em = sw.ElapsedMilliseconds;
Console.WriteLine("LoadVgroups" + em + "毫秒");
sw.Restart();
int num_ds = 0;
int num_global = 0;
status = HDF4Helper.SDfileinfo(_sd_id, out num_ds, out num_global);
_num_datasets = num_ds;
_num_global_attrs = num_global;
for (int i = 0; i < num_ds; i++)
{
H4SDS ds = H4SDS.Load(_sd_id, i);
_datasets.Add(ds);
}
for (int i = 0; i < num_global; i++)
{
HDFAttribute global_attr = HDFAttribute.Load(_sd_id, i);
_global_attrs.Add(global_attr);
}
sw.Stop();
em = sw.ElapsedMilliseconds;
Console.WriteLine("SDfileinfo" + em + "毫秒");
sw.Restart();
//Finding All Vdatas that are Not Members of a Vgroup: VSlone
//初始化Vdata(读取表格数据,表格列名称参数)
int[] ref_array = new int[1024];
HDF4API.VSlone(_file_id, ref_array, 1024);
//初始化Vdata(读取表格数据,表格列名称参数) istat;
int vdata_ref;
int istat = HDF4API.Vstart(_file_id);
vdata_ref = -1;
List <H4Vdata> vdatas = new List <H4Vdata>();
while ((vdata_ref = HDF4API.VSgetid(_file_id, vdata_ref)) != HDFConstants.FAIL)
{
H4Vdata vdata = LoadVdata(_file_id, vdata_ref);
vdatas.Add(vdata);
}
_vdatas = vdatas;
sw.Stop();
em = sw.ElapsedMilliseconds;
Console.WriteLine("VSlone" + em + "毫秒");
}