Creating A TreeView Nested Structure Using Self Referencing Table?
Jun 4, 2010
I am trying to create a TreeView nested structure with the use of self referencing table fields. Here is a simple example:
Category 1
Product 1
Toy 1
Toy 2
Product 2
Toy 3
Toy 4
more categories.. The database table has a single table called "Category". The ParentCategoryId points to the Category which is the parent. So, for the Category 1 the ParentCategoryId is null since it is parent. For Product 1 the ParentCategoryId is that of the Category 1 id and for Toy 1 the ParentCategoryId is that for the Product 1 id.
I am using the following code but it does not generate the TreeView (ASP.NET) successfully.
public void BuildTree(List<Category> categories, TreeNode treeNode)
{
if (treeNode == null) return;[code].....
I am new MVC 4 and I am trying bind routine of class . For example if i bind class after that automatically get the all routine of same class . If we talk in asp.net c# language i want to bind a repeater2 on item bound command of repeater 1. How to get this in mvc ...
i am new to WebServices, i have a ClassDataLibrary.dll which include classes like Users,Products,Articles...
i want to create a structure like this in my webService. as i saw the examples of creating web services the web methods written on the same page. but i got over 50 methods in dll and i want to share these methods with flash so flash user get data using my webService but it will be difficult to find the method he wants so i want to give my webService in a structure like:
Service1.Users // he will finds the methods about users
Service1.Products // he will finds the product methods
how could i do it ? is there any example or something to share with me?
I am setting up a routine whereby I have to copy the results of a MySQL stored procedure into a DataTable so that I can add fields to the end of the result.
Normally I would convert the Msql DateTime to something that I could more easily manipulate; however, the existing code that I have specifically addresses the MySql DateTime type in too many ways to easily change.
So I thought I could do something like this:
Code: myDataColumn = new DataColumn("ETD_DT"); myDataColumn.DataType = System.Type.GetType("System.DateTime"); returnDataTable.Columns.Add(myDataColumn);
And substitute "MySqlData.Types.MySqlDateTime" for "SystemDateTime", but it fails with "Column Requires a Valid DataType".
The form allows a user to create and edit one estimate.
Each estimate can contain multiple Jobs, which are represented in a ListView.
Each Job can contain multiple Parts, which are contained in a ListView that sits in each item of the Jobs ListView.
A user can add and remove as many Jobs as they want.
A user can add and remove as many Parts to/from each Job as they want.
I have no issues adding to each of these, but I do have a problem removing a single part from a single job.
For a reference, here is one Job in the Jobs ListView on the form:
I want to make sure that no matter what a user does, the part of the form they are working on saves what they have. Removing a row from that Parts ListView is no exception. What I want it to do is save the values in each of those textboxes and then delete the necessary row.
Here's what I have in the codebehind:
[Code]....
The EstimateRow variable I create does not get a value from theListView)HFERID.Parent.FindControl("LVEstimateRow") bit of code. There must be another level of nesting that I'm not accessing correctly, because it can't seem to find that nested ListView.
In above link you clearly describe (How to display directory folder structure). Â
The path only works when the folder insight the project.
When I put folder outside the project it didn't work. What type of changes I need to made to acces the folder outside the poject. & How can I show other details of files which are including in folders Like. Last Modified Created Date, Modified Date etc..
When creating a foreign key to the membership user table, is it better to refer to the user_id column or is it ok to use the username column? I assume that the Membership spec enforces uniqueness in the username since there is a method Membership.GetUser(username) that returns one user. Using the id is a bit awkward in code because I have to end up casting all over the place like (int)user.ProviderUserKey. The username would give more information quickly when viewing raw data as well. Just wondering if someone knows a reason why I shouldn't use it as the foreign key.
using VWDExpress2010, is there a way to print the table definition for an SQL table that has been created within the designer? I would like to begin using SQL databases for more of my projects but find the difficulty in working with the tables (compared to other options) to be such a pain that I usually choose some of the other formats. Typical problems are simply documenting the structure, moving data in and out with some form of command line feature, etc.
I use Mysql database, in this i create two table A, B. table A column x and is FK of second table B's column m,n,o provide does it possible that x referncing to foreign key of table B columns m, n , and o all.
On runtime I am creating table structure using javascript and appending it to the div which is placed in an update panel. Problem here is, when I use asp.net button control, onClick of the button it posts the page to server and whatever javascript tables I have created it goes off. When I use html input button (input type="button") I don't face this problem and tables also stay there. But I have to use asp.net button to take necessary actions on the server side. Is there any way that I can restore the structure or use asp.net button control alongwith dynamic javascript.
I have this table structure, and I can pull ot all I want like product details, color, size and so on. Now I want it to work like this. When I select a color only sizes avalible in that color should be returned from the database, and same thing when I select a size only colors avalible for that size should be returned. NOw it works like price and quantity sets to zero, but it should have been better if it was impossible to choose a combination that don't exists.
Then I have one more. SizeId and ColorId can be null in db. That is not good when I try to receive those rows.
I have one table in database in which millions or records exest already. I can't change the structure of table. And i have to create 4 store procedure each of them will fetch 100 records from this table. And they will keep going on. But condition is that they should not fetch same row. how can all store procedure fetch uniqe data from table.
I want display this data in a gridview with radio button like:
Radio Button : A Collapse able Button:2 Radio Button:C Radio Button:D Collapse able Button:3 Radio Button:E Radio Button:F Radio Button : G Radio Button : H
In my form there are about 6 parameters and two of them have multiple values, upto 6. I'm imposed by the restrictions that I can't change the table structure. The table have 8 fields one for ID as primary key, one for foreign key and other to store data. The two fields which have multiple values are color and size. A size may have different colors and vice versa.
The programmer which have developed the site earlier used a stored procedure to store the data in database. And he implemented the above scenario one by one for each color/size. Now I have to put all in one.
How can I do this. As I can't change the table structure at current moment as this will disturb the whole E-commerce site.
i want to create a tree view for displaying folder hierarchy
my database about folders is in sql server so there is no option in tree view for sqlserver its just showing the xml database how can i create such structure its similar to windows explorer.
I have created one treeView which is loading node dynamically (populateondemand ). its working perfectly fine. But I want to show loading when its populating node from client view.
Note : - Only on click of image of the Tree view should display loading ..
I have a child table inside the cell of parent table. I want to stretch the child table so that i covers full space in the cell of parent table. Also i need to keep the DOCTYPE tag. how to achieve this.
