Which Is Better For Web Business Application
Sep 2, 2009
This is a debate that can never be fulfilled without you. Please come forward and respond.What if we have a client who wants to develop a web enterprise application (based on SAAS architecture) and prefers for C# and not VB.NET based. Argument can be:
1. C# is better suited for developing enterprise application versus VB.NET
2. C# is object oriented versus VB.NET is not
3. Programming in C# is faster than VB.NET
4. Libraries/function blocks in VS.NET is more for C# versus VB.NET
I would request you to help me answer this. I believe this is the type of questions many faces when deciding for which language to go for, both developers and organizations.
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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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Aug 18, 2011
his running an XP network and wants to put some real-time monitoring in place on his staff and what they're doing.
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Dec 31, 2011
I want to be able to drag data from one DGV to another. When the drag is completed, I want the backcolor of the cell that the data was taken from to change to red. I will add a "trash" icon that will accept a drag and drop from the 2nd DGV to remove the data from its respective cell. Finally, when the cell is trashed, the corresponding cell from the first DGV will return to it's normal backcolor. My application is going to be used to schedule clients with employees for a home health care business. The reason I want all of this is so the user has a visual aid to show them that times have been used already to avoid double staffing. i also have to figure out how make all of this unique to each client when flipping through the DGV/binding source.
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May 24, 2010
I am a self taught "developer".I use the term loosely because I only know enough to make myself dangerous. I have no theory background, and I only pick up things to get this little tool to work or make that control do what I want.
That said, I am looking for some reading material that explains some of the theory behind application development especially from a business standpoint. Really I need to understand what all of these terms that float around really talk about. Business Logic Layer, UI abstraction level and all that. Anyone got a reading list that they feel helped them understand this stuff? I know how to code stuff up so that it works. It is not pretty mostly because I don't know the elegant way of doing it, and it is not planned out very well (I also don't know how to plan an application).
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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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Jan 24, 2012
I have an application that does complex calculations for members. Each member can have multiple US states linked to their profile. Each state has got different calculations for each course a member completes. As of now I have been performing the calculations in the DB (SQL Server 2008) and then sending data back to app layer where they can see their history and then download a certificate for each course. I have a business logic layer but not a lot happens there. I know this has been asked a lot but where do you think I should perform these calculations: business layer or database? I am going back and forth
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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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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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Mar 20, 2012
I was having a discussion with a colleague about a method used to check business rules. In general there are two conditions:
"If one fails the whole thing fails"
Example 1: "If one fails the whole thing fails"I have used the following technique for condition 1 in several cases. Essentially if one of those conditions is false then the whole thing fails
Dim blnTemp As Boolean = True
If Fail=False Then blnTemp = blnTemp AndAlso False
{code code code}
[code]....
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May 20, 2011
does a big business in shirts, especially for groups and teams. They need a project that will calculate the price for individual orders, as well as a summary for all orders.The store employee will enter the orders in an order form that has text boxes for customer name and order number. To specify the shirts, use a text box for the quantity, radio buttons to select the size (small, medium, large, extra large, and XXL), and check boxes to specify a monogram and/or a pocket. Display the shirt price for the current order and the order total in labels.
Include buttons to add a shirt to an order, clear the current item, complete the order, and display the summary of all orders. Do not allow the summary to display if the current order is not complete. Also, disable the text boxes for customer name and order number after an order is started; enable them again when the user clicks on the button to begin a new order. Confirm the operation before clearing the current order.
When the user adds shirts to an order, validate the quantity, which must be greater than zero. If the entry does not pass the validation, do not perform any calculation but display a message box and allow the user to correct the value. Determine the price of the shirts from the radio buttons and check boxes for the monogram and pockets. Multiply the quantity by the price to determine the extended price, and add to the order total and summary total
The assignment also requires a pop up message "Daily Summary" with total shirts sold, total sales, and average sale per customer.So far I have this as my code but I am not sure what needs to change in order to display the correct total shirts- mine only displays the last accepted shirt order.
[Code]...
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Sep 17, 2009
I am writing a program that takes a shipdate and generates a timeline of deadlines for a manufacturing job by working backwards from the shipdate. I hav no problem handling weekends. However, some holidays are giving me problems. For holidays that don't have a set date (Thanksgiving, Labor Day, Memorial Day...) what is the best way to determine the date they fall on? Most of the examples I have seen use an array of dates (either from a file or hard coded) for these holidays. Is there a way to do this tha won't require someon to generate a list every year for these holidays?
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Jun 22, 2012
I need to calculate the end date given the number of business days (excluding weekend and holidays). All the examples I've seen so far return the number of business days between a start date and an end date.
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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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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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Feb 1, 2011
(using VB2008)I was wondering if it's possible to implement dynamic (runtime) formulas between objects and properties. My inspiration is Excel, where any cell can have a hardcoded value or be a function of other cells. So via analogy of a property acting like a cell, depending upon the situation, I would like to either give it a defined value or make it a function of other properties of objects of the same type.
There seem to be two basic levels of functionality, 1) the dependent property recalculates its value every time it's accessed, or better is 2) it detects when its input properties change value and recalculates itself only once (as in Excel). But so far I've failed to find any way to do either with ordinary properties. It seems like I would either have to turn each property into a class (and use events, references to parent properties, etc), or use reflection heavily. Either way I feel like I'm going off the beaten path and making things complicated. Has anyone done something like this?
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Feb 16, 2010
i am currently trying, to create some sort of a business logic within my class, that contains information about a machine, now this machine once sold, can be re-sold by its owner. the company needs to keep track of the machine and its owner for warranty claim purposes.the class takes in two values, a from date and a to date.now when a new owner is added to the owner collection of the machine, the TO date of the previous owner should automatically be updated to one day less than the From date of the new owner that is being added.
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Aug 16, 2010
I have tried searching all over the web for this logic. Got many but half of them did not match what i was looking for and half were malfunctioning.I want to calculate business working hours between 2 datetime, where in I should be able to set the working hours as well as weekends and holidays should not be calculated.
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Dec 8, 2011
I search google and oracle forums before I came here with this question.
Is someone familiar with VB.NET and Oracle Form (11.5) interaction.
I just want to login in the Oracle E-Business Suite from VB.NET.
I hope to find the anwser here.
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Jun 7, 2009
below i have a piece of code, i have to calculate the next working day +5 from today but this calculation has to calculate days from monday to friday and exclude weekends(saturday & sunday) and also excluse public holidays.i have tried but what i got is that it calculates 5days without excluding anything.example if a record is taken out monday, the return date must be the next monday but with this code calculates weekends as well it says return date is saturday.
Public Function AddWorkingDays(ByVal DateIn As DateTime, _
ByVal ShiftDate As Integer) As DateTime
' Adds the [ShiftDate] number of working days to DateIn
[code]....
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Dec 6, 2011
I have several successive web pages going through a checkout process and they each have tons of business logic that time restraints limit me from pulling out and wrapping up elsewhere in the code the way it needs to be. What would be a good method for calling each one of these pages' Submit buttons in order from one page to the next?
The way I was going to do this was to (laugh at me go ahead) make PUBLIC all of the submit buttons' code and just call them. But what I have found is that all of them have, of course, certain calls to controls on their pages where it might make a label visible or change a text property then that will crash the app due to a null reference. I believe it is basically saying if the webpage is not visible then it is not going to let the code start setting certain GUI properties of the controls on the page. It seems like I recall this in VB6, too.
Anyway, what would you do if you were in this situation? I have started down the path of creating a flag that says whether or not I am in expresscheckoutmode and, if so, it just doesn't do the "illegal" things mixed into all of the code like making labels visible and all that. But that also means that I have an IF BLOCK everywhere where the code simply changes a label. It junked up the code bad and I still haven't finished that implementation of it all. I wanted to come here to ask the collective mind what programming principles I can best apply here.
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Oct 1, 2010
I also went though the whole "ASP.Net in 24 Hours" book by Scott Mictchell. I followed everything that went on in that book and built the final project successfully. I also used the tutorials here to better understand the whole Membership Provider/User tables setup that was going on in the book. Next, I thought I would learn more about accessing data for ASP.Net since that is what most application do.I went through the first Data Tutorial here. I seemed to understand what was going on just fine.The second Data Tutorial seemed to just show a lot of VB code to build the Business Logic Layer. There was not much explanation about how to do it yourself.I think I can keep going in the tutorials here. I downloaded the code from the second tutorial and went through it.I am guessing that the code in the second tutorial was given just to proceed with the overall project that is being built throughout the tutorial sequence.
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May 13, 2011
I have a collection of populated custom business objects in my app which I'm going to insert into a SQL 2005 DB using a stored procedure. The collection size isn't massive, maybe 20-30 objects.Is there an elegant way to insert all of these objects into the DB in one go without doing something like the following?:
Open DB conn
For each item in collection ...
Set parameter values of SP from item.properties for SQLCmd
[code]....
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Sep 24, 2009
If code the parameter list as seperate arguments then this wouldnt be a problem, but following a taught pattern that i should take collection as parameters in update or create methods.
Assume the there are three members in a class and in the update or create methods that was told code them to take collection, therefore create.
update methods of that class take collection but the problme the caller faces that it doesnt know the order and names of each element of the collection.
Assume :[code...]
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Mar 30, 2011
I have a simple business rules engine that I need to write. I have looked at both Biztalk and Windows Workflow, but they are to much for what we need to do. This is a process that material will come to an operation, the GUI will check for three rules, one for the operation, one for the steps in the operation, and one for the item coming into the operation. These are the only three checks that will be done. It is possible there will be more than one rule for each check. I have a simple database set up to contain all the operations, steps and products and there is a crosstab table that links all the rules to each item. Here is an example of some rules (these are actual rules from the process):
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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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Aug 4, 2011
On VB 2008 express, how to connect to SAP Business One's DataBase? The Database is MS sql 2008.
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Jun 8, 2009
I know the datediff function can give the count of the number of days between two different dates, but how can I get the count of the number of business days - i.e. Monday - Friday - between two dates?
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Oct 12, 2009
In VB2005 I am trying to calculate the number of business days between two dates. I must also account for U.S. holidays (New Year's Day, Martin Luther King Day, Memorial Day, Independence Day, Labor Day, Veterans Day, Thanksgiving Day/Friday after, Christmas Day). If a holiday falls on a Saturday, then the prior day (Friday) is assumed to be a holiday. Likewise, if the holiday falls on a Sunday then the following day (Monday) is assumed to be a holiday.
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