Asp.net - Create Table From A Business Object With Conditional Layout?
Apr 16, 2010
I need to generate a table from a List(Of Students). My Student class has properties for AcademicYear, TeachingSet, Surname and Forenames, is sorted in that order and also properties for ID and start date. The table should nest TeachingSets within AcademicYears and then the students within the TeachingSets, as shown in the table I've mocked up at http:[url]...
Using a repeater I get
08-10 students B74394 Mzejb Bsppn
08-10 students B74395 Lbuifsjof Bvti
08-10 students C68924 Epoob Cmpblf[code].....
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Apr 19, 2009
Due to a discussion in another thread , I am starting to use business object in an 3-Tiered windows app. As a starting point, I am trying to build objects/classes on a table from my database.
The database table has the following columns:
ID
TypeID
Reference
[Code]....
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Oct 11, 2010
using an object-binding I have a an object representing "Employee". The employee has an ID-property. The ID of the employee must be unique.
My validation of the entered data is handled in the property set part of the object. In general, I validate criteria belonging to the object to validate only (eg numeric range of the ID, if it's value is not empy, ...). But in this case I need to know all ID's from the other employees. My tried this:
''' <summary>
''' Set EmployeeID
''' </summary>
[Code].....
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Jun 17, 2009
The issue I'm currently having is mapping multiple GUI fields to object properties (i.e. Presentation layer to Business Logic Layer mapping). To be more specific, this is in VB.Net 2.0 WinForms. The nature of the solution requires us to have 4 columns which exhibit the same type of behavior on our GUI - each column consisting of 11 textboxes (we'll just use this small sample size, as the problem extends beyond 11 textboxes).
What I am currently doing is setting the tag of each textbox in all four columns to a value like so:
Textbox1.tag = "name"
Textbox2.tag = "type"
Textbox3.tag = "speed"
[Code]...
As you can see this can get very bad, rather quickly. Currently we're setting 43 some odd properties that can be mapped to -- thus that select statement is extremely long -- many of which are embedded in multiple methods to try and attempt DRY (I've watered down the code to essentially a conceptual implementation).
Question is: how can I refactor this? I've attempted using a dictionaries/hashes to a certain extent, but it either became overly complex, or just plain didn't make an implementation sense as it convoluted the problem even more.
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Jun 21, 2010
I have a custom business object called Customer and a Form1 with a BindingSource1, NumericUpDown1, TextBox1 and ComboBox1 and the attached code. Setting break points in the Property Sets shows that the Set for the ComboBox never fires at all even though the Set for the NumericUpDown and TextBox fire like crazy. [code]
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Apr 7, 2010
I have completed a simple database for a project. Only 6tables. Of the 6, one is a "lookup" table.There is one "master" table that is the driver for the system. It is referenced as a foreign key by the other four tables.Give that this step is completed. What is the FASTEST, EASIEST way to create POCOs/BizObjects that can load load the data and the child data.Here are my CAVEATS.
I don't want to spend more than 30-60 minutes learning how? There is very little biz logic needed in the POCOs. They will pretty much load data. Don't even really need to write back data.I already know CSLA (up to version 3) but I feel that is overkill for this little project.Nevertheless, I would love it if it ROOT objects could have collection classes that contain the CHILD objects as in CSLA...but again, without using CSLA.
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Feb 23, 2010
What's the best object layout in ASP.net or at least.. what are the advantages and disadvantages of either case:
[Code]...
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May 7, 2012
I'm developing a business model for an application where I am representing physical entities. The hierarchy created from this is neat, but as I'm doing this, I'm beginning to think about things like, what properties should be included in one that may already be apart of another? Or what if some properties are expected to be in one object, but another object needs to return that value, how does it communicate that request through the hierarchical chain? And what is the best practice for this design?
[Code]...
But then I got to thinking, what if I have a ConnectionPoint entity and I want it to return which Panel it has? Should it have it's own Panel association as well? Or should there be a method/pattern for communicating the request up the chain? And again... what's typical best practice?
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Jun 27, 2010
I am attempting to create an application for my (very) small businessRight now I am trying to create an "Add a Customer" formI know VERY LITTLE about MySql so I thought I would save the text into a textfile.. I then realized I do not know how to save multiple text box in a text file (I only knew how to save one text box in a text file)
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Nov 14, 2009
In a vb .net winforms app I am trying out something for "wide and shallow" children of a record. I use strongly typed business objects ( Strataframe ).My plan is to have a number of "child tables" collected in a dataset I drop on the form. they have no correspondence in persisted data, so the dataset is untyped and I am creating the schema through the property sheet for the tables. Each table is the datasource for a datagridview in the interface.
In my proof of concept sample, My main businessobject (CustomerBO) interacts with a SQL Server 2008 table with fields - pk, name, - and a third column which is currently varchar(max) as I considered XML but could just as easily be varbinary(max) if that works better for holding the serialized dataset.
bo.bigfield will be the strongly typed prop I want to hold the byte() array or XML or whatever that represents the dataset for that record.So, the question in a nutshell - how do I convert a dataset to a single datum and reproduce the dataset from that datum. This is my first foray into datasets, datagridviews as well so if there are better ways to accomplish any of that I'm listening.
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Aug 8, 2011
I'm just learning VB & ASP.NET and read a lot about making multi language websites. I understand the principes of creating resource file etc...But what with tables in de database that are used to fill f.e. a listbox ?
Example : an employee has a function
In the database I have a table "Functions" with an ID and a description of the function.Should I design my table Functions as this :
ID
Description_en-US
Description_de-DE
Description_nl-BE
...
Is this the best solution ?
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Oct 11, 2010
I am creating a TableLayout in which the rows and columns are set by the user at runtime.There initial controls on the form are rowsTextBox, columnsTextBox, button1 and tableLayoutPanel1.I modified some of the code from my initial program. Here's the old code.
Private Sub button1_Click(sender As Object, e As EventArgs)
tableLayoutPanel1.RowCount = Integer.Parse(rowsTextBox.Text)
tableLayoutPanel1.ColumnCount = Integer.Parse(columnsTextBox.Text)
[code]...
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Dec 29, 2011
I was just wondering if it is possible to apply an attribute to a property within a business object (MyBusinessObject) such that after the DataSource of a grid is set to a List(Of MyBusinessObject), the visible property of the column will automatically be false. For example:
myGrid.DataSource = New List(Of MyBusinessObject)
Public Class MyBusinessObject
[code]....
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Oct 13, 2011
I'd like to have an updateable DataGridView that's bound to a database-driven business object. It needs to handle all aspects of CRUD and be sortable and filterable as well.
Most of them simply bind to an object (non-database, manually filled) and do not allow you to Add, Delete, and Edit records. Furthermore, they basically never show how you would perform sorting and filtering.
I think the biggest things I'm not understanding are:
1) How do you make the DataGridView perform additions, deletions, and edits on an object.
2) How do you program your object to handle additions, deletions, and edits. Do you just need methods that use ADO.Net, NHibernate, or Linq to SQL (or any other CRUD handling mechanism)?
3) How to make this filterable and sortable.
Is this overly difficult to do or why am I have so much trouble finding examples for this?
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Apr 21, 2010
I want to be able to populating a data from my oracle database into vb.net
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Mar 30, 2009
I'm trying to do a school schedule with a Table Panel Layout, and i'm having some difficults.This is the code i have so far:
TableLayoutPanel1.ColumnCount = 7
TableLayoutPanel1.RowCount = 2
TableLayoutPanel1.CellBorderStyle = TableLayoutPanelCellBorderStyle.Single
Dim label_seg As New Label()
[code]....
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Mar 23, 2012
Anyone knows how to generate a list of all dates of all working days of a specific year?
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Oct 5, 2010
I'm working with BCM to create Business Project. I'm able to create the Business Project but what i would like to do that to create the Business Project with it's ItemProperties Vaue. For example : BusinessProject.ItemProperties("Project Start Date").Value = dtpStartDate.Value.Date. It gives an error (System.NullReferenceException: Object Reference not set to an instance of an object).
But when i edit the existing Business Project it allows me to add ItemProperties Value.
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Apr 7, 2011
I want to add a single row or more in column but not in complete table layout panel,
means i just want to add row in first column not in second, third or any
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Jun 17, 2009
How to check tablelayoutpanel each cell having controls is available or not...
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Sep 19, 2011
I'm using a TLP and it contains controls that exceeds it's height, so it's normal for a vertical scrollbar to be displayed. So far so good, but i can't figure out why a horizontal scrollbar is also being displayed when my controls width do not exceed that of the TLP. Is there some way to remove this horizontal scrollbar?
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Mar 23, 2011
How do I remove a row, in code, from a table layout panel. The Rows collection appears at design time but it's not obvious how to do it in code.
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Jul 21, 2010
How to hide or show rows in a table layout panel.
As I used rowstyle property and it works
But the issues are
1) It works very slow
2) It seems as form is vibrating and lightning behind the panel when rows are hiding or showing(jerky motion of hiding or showing)
I also used the control .visible property for each control of the row but it also make same problem of being slow
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Apr 29, 2010
I have a listbox populated with peoples names. When I click on a persons name in the listbox, a datagrid will unhide itslef, connect to a DB, and list all of the pictures that person has. All the pictures are stored on a drive in a folder named after the person. i.e.
Greg Palinkas has 52 images stored in F:PicturesGregPalinkasImages.
I would like to display all of those pictures in a Table Layout Panel populated by the choice I made in the listbox, so if I select Greg Palinkas, the Data Grid is pupulated with the names of all the images i have, and the Table Layout Panel is populated with all the pictures I have in my GregPalinkasImages folder. I have got the Data Grid updating and running smoothly, but am lost as to how to get the images to come up.
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May 31, 2010
I am attempting to create a program which saves customer information for a business e.g first name, last name, address etc. but i am having trouble coding the save , new, print, next/previous record buttons.
Would someone be able to link me to a tutorial which explains how to do these?
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Sep 20, 2011
I created a sql query to check if the mobile number is registered or not. If its registered, it will send the new pin code to the customer and if its not, the customer will get a message that "This number is not registered or you are not authorized to this"... something like that... Sending of new code is already working. I just dont know how to make it as conditional statement like PHP. After you query on PHP, you can just set a variable and make a conditional statement..Here is my script in vb.net:
Private Sub CheSMS()
Dim SQLServer As String = My.Settings.SQLServer
Dim conn As SqlConnection[code]......
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Oct 10, 2011
how to create a conditional statement if the value of rows is zero or not.I want my output to something like... IF the value is zero, an sms message will be sent to the client that he is not registered ELSE an sms message will be sent containing his new autogeneration code. Been working on this for a month but i have no luck.
Here's my code:
Private Sub CheSMS()
Dim SQLServer As String = My.Settings.SQLServer
Dim conn As SqlConnection
Dim cmd As SqlCommand
[code]....
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Jan 4, 2012
I am writing a windows forms application in visual studio 2010 (using VB). I want to change the control shown in a particular cell of a Table Layout Panel at runtime. Like this...
If radiobutton1.checked then tablelayoutpanel1's cell 1,1 shows panelOne
else tablelayoutpanel1's cell 1,1 shows panelTwo
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Sep 17, 2011
I have a windows form that contains a table layout panel extending the whole form, the size of this table layout panel may change at run time according to it's content, how can I make it's parent form automatically take its size,
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Jun 16, 2011
I am trying to create a small photo album layout in vb.net using a listview that when a new album has been created it shows it in the listview as a 3 x 2 grid. But when it gets more than a 3 x 2, I want it to just show a link listing all albums.
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