C# - How To Implement A Category Hierarchy Using Collections
Apr 14, 2010
I have about 200 categories that are nested. I am currently reading the documention on the C5 generics library. I am not sure if the C5 library is overkill or not. I am looking at converting all my custom algorithms to the C5 implemention.
This is what I need. If a certain category is chosen i need to find its parents, siblings, direct children, and all children.
This is the way I have it set up. To find the:
Parents: I start from the current location then loop through the list and find the current parent. When I find the parent I loop through the whole list again to find the next parent and so on.
Siblings: I loop through the whole list and find all the nodes that have the same parent as the choosen node.
direct children: I loop through the whole list and find all nodes that is a parent of the choosen node.
All Children: This one took me a while to figure out. But I used recursion to find all children of the choosen node.
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Oct 21, 2010
I am having a lot of the same issue as this poster did with errors on initializing type.
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I'm trying to do a simple update to product names in the product table based on the manufacturer ID
In order to do this I am looping through each record. I was initally successful with changing all names in the column but when I try to query the data, I continually run into multiple problems.
The following poster has had the same issue I have but his solution isn't working for me.
[URL]
I keep getting the same error on the opening bracket on the select statement in the SelectByManufacturerID function...
Error 1 Cannot initialize type 'DataBaseDataManagement.ProductName' with a collection initializer because it does not implement 'System.Collections.IEnumerable'
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[Code]....
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[Code]....
The class located in Query.cs...
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Nov 5, 2010
i create example using Northwind database so i create a new website and add new ADO.Net Entity Data Model (.edmx) called Northwind.edmx and i add Categories and Products table inside this (.edmx) file
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[Code]....
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[Code]....
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Feb 7, 2010
I'll try to explain as simple as I can in text what my problem is. I don't see any other way to make my issue clear.
I have a GridView that uses an ObjectDataSource.
The ObjectDataSource has an DataObjectTypeName defined, so I pass/get complete objects or list of objects to/from the data access methods.
The objects I'm working with, let's say we work with Book objects, contain a Title and a Category, BUT the Category is an object itself. When the Select method is called, we get a List of Book objects, which is perfectly displayed, overridden ToString method in the Category objects within the Book objects.
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So far so good... but when I want to save my new selection, I get an error that a string (the selected category in the ddl) cannot be converted to a Category object (that's what the Book object, that is going to be used for the update, expects).
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Mar 30, 2011
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Jan 25, 2011
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I think it should contain 'WITH' SQL command.
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[Level_Id] [numeric](18, 0) IDENTITY(1,1) NOT NULL,
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CONSTRAINT [PK_T_LEVEL_MASTER] PRIMARY KEY CLUSTERED
(
[Level_Id] ASC
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Feb 20, 2010
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Could this have been all I needed to change? I have the feeling that I missed something.
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