public async Task <List <AllCategoryDto> > GetCategoryTree(List <Category> allCategories, int?parentId = null)
{
var categories = new List <AllCategoryDto>();
var children = allCategories
.Where(x => x.ParentCategoryId == parentId)
.OrderBy(x => x.Sort)
.ToList();
foreach (var child in children)
{
AllCategoryDto category = new AllCategoryDto
{
Guid = child.CategoryGuid,
//ParentId = child.ParentCategoryId,
Title = child.DisplayName,
//Order = child.Sort
};
category.Children = await GetCategoryChildren(allCategories, category);
categories.Add(category);
}
return(categories);
}
private async Task <List <AllCategoryDto> > GetCategoryChildren(List <Category> allCategories, AllCategoryDto category)
{
var c = await _context.Category
.Where(x => x.CategoryGuid == category.Guid)
.SingleOrDefaultAsync();
if (c != null)
{
var subCategories = allCategories
.Where(x => x.ParentCategoryId == c.CategoryId)
.OrderBy(x => x.Sort)
.Select(x => new AllCategoryDto
{
Guid = x.CategoryGuid,
//ParentId = x.ParentCategoryId,
Title = x.DisplayName,
//Order = x.Sort
}).ToList();
if (subCategories != null)
{
category.Children = subCategories;
foreach (var item in category.Children)
{
item.Children = await GetCategoryChildren(allCategories, item);
}
}
return(category.Children);
}
return(null);
}