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QuestionWhat are the in-order and post-order traversals of the following tree? Pin
priyamtheone20-May-21 5:02
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AnswerRe: What are the in-order and post-order traversals of the following tree? Pin
harold aptroot20-May-21 7:08
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GeneralRe: What are the in-order and post-order traversals of the following tree? Pin
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GeneralRe: What are the in-order and post-order traversals of the following tree? Pin
harold aptroot20-May-21 9:48
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QuestionAlgorithm to rank items lower if they already appear higher in another category Pin
Member 117824613-Mar-21 19:41
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AnswerRe: Algorithm to rank items lower if they already appear higher in another category Pin
Ralf Meier9-Mar-21 5:55
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QuestionSaving Hierarchical (Treeview) object Iteratively with parent and child in C# Pin
Md NasirUddin24-Feb-21 5:35
Md NasirUddin24-Feb-21 5:35 
I have database table object which is:


C#
[Table("TreeViewDb")]
public class TreeViewDb
{
	[Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
	public int Id { get; set; }
	public int ParentId { get; set; }
	public string Name { get; set; }	
}


And I have a view model whcih is :


C#
<pre>public class TreeView
{
	public TreeView()
	{
		Children = new List<TreeView>();
	}

	public int Id { get; set; }
	public int ParentId { get; set; }
	public string Name { get; set; }

	// children
	public List<TreeView> Children { get; set; }
}


Now I need to save TreeView to the database. During save children or children under children to the nth Level. But my below method only goes to level 3. How can I go to nth Level to save child and parent objects with recursive way?

C#
public bool SaveOrUpdateTreeView(TreeView viewModel)
{
	// Level 1
	var parentModel = new TreeViewDb
	{
		Id = viewModel.Id,
		ParentId = viewModel.ParentId,
		Name = viewModel.Name
	};

	// Save or update object and return primary key
	var parentId = _dataRepository.SaveOrUpdateTreeView(parentModel);

	// Level 2
	foreach (var child in viewModel.Children)
	{
		var childModel = new TreeViewDb
		{
			Id = viewModel.Id,
			ParentId = parentId, // Parent Primary Key
			Name = viewModel.Name
		};

		// Save or update object and return primary key
		var childId = _dataRepository.SaveOrUpdateTreeView(childModel);

		// Level 3
		foreach (var grandChild in child.Children)
		{
			var grandChildModel = new TreeViewDb
			{
				Id = viewModel.Id,
				ParentId = childId, // Child Primary Key
				Name = viewModel.Name
			};

			_dataRepository.SaveOrUpdateTreeView(grandChildModel);
		}

		return true;
	}

	return true;
}


AnswerRe: Saving Hierarchical (Treeview) object Iteratively with parent and child in C# Pin
Gerry Schmitz24-Feb-21 6:28
mveGerry Schmitz24-Feb-21 6:28 
QuestionDesign a brute force algorithm to count the number of inversions in an array, analyze the number of executions of its basic operation, and determine the efficiency class. Pin
Ilyas Idrees8-Feb-21 5:42
Ilyas Idrees8-Feb-21 5:42 
AnswerRe: Design a brute force algorithm to count the number of inversions in an array, analyze the number of executions of its basic operation, and determine the efficiency class. Pin
20212a24-Feb-21 7:22
20212a24-Feb-21 7:22 
AnswerRe: Design a brute force algorithm to count the number of inversions in an array, analyze the number of executions of its basic operation, and determine the efficiency class. Pin
Patrice T25-Feb-21 2:57
mvePatrice T25-Feb-21 2:57 
QuestionLooking for "card playing" algorithm Pin
David Crow4-Jan-21 9:30
David Crow4-Jan-21 9:30 
AnswerRe: Looking for "card playing" algorithm Pin
Ralf Meier4-Jan-21 9:43
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AnswerRe: Looking for "card playing" algorithm Pin
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GeneralRe: Looking for "card playing" algorithm Pin
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GeneralRe: Looking for "card playing" algorithm Pin
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AnswerRe: Looking for "card playing" algorithm Pin
Gerry Schmitz5-Jan-21 3:27
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Questionformulate an algorithm Pin
Member 1502086714-Dec-20 6:59
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AnswerRe: formulate an algorithm Pin
Greg Utas14-Dec-20 7:31
professionalGreg Utas14-Dec-20 7:31 
AnswerRe: formulate an algorithm Pin
Gerry Schmitz14-Dec-20 11:37
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AnswerRe: formulate an algorithm Pin
Patrice T14-Dec-20 12:38
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AnswerRe: formulate an algorithm Pin
Member 1525570320-Jun-21 20:01
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QuestionProblem in c language Pin
Member 150165689-Dec-20 3:16
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AnswerRe: Problem in c language Pin
Richard Deeming9-Dec-20 3:43
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