private async Task LoadParentDetailsWithFirstChildrenAsync()
{
var firstGenDetails = await _detailService.GetParentDetailsAsync();
var firstGenDetailsHierarchyIds = firstGenDetails
.Select(x => x.HierarchyLevel)
.ToList();
var secondGenDetails =
await _detailService.GetDetailsFirstDescendantsAsync(firstGenDetailsHierarchyIds);
foreach (var firstGenDetail in firstGenDetails)
{
var treeNode = new TreeNode()
{
Text = DetailNameInTree(firstGenDetail.Name),
Tag = new DetailInTreeView()
{
DetailId = firstGenDetail.DetailId,
Name = firstGenDetail.Name,
HierarchyLevel = firstGenDetail.HierarchyLevel
},
Name = firstGenDetail.HierarchyLevel.ToString()
};
var childDetails = secondGenDetails
.Where(x => x.HierarchyLevel.IsDescendantOf(firstGenDetail.HierarchyLevel))
.ToList();
foreach (var childDetail in childDetails)
{
treeNode.Nodes.Add(new TreeNode()
{
Text = DetailNameInTree(childDetail.Name, childDetail.Count),
Tag = new DetailInTreeView()
{
DetailId = childDetail.DetailId,
Name = childDetail.Name,
Count = childDetail.Count,
HierarchyLevel = childDetail.HierarchyLevel
},
Name = childDetail.HierarchyLevel.ToString()
});
}
treeView.Nodes.Add(treeNode);
}
}