I face problems while transferring objects between layers (mainly the Presentation Layer), as I work with classes having approximately 40 properties.(I don't reference the DAL in the Presentation Layer)So here's what I decided, I am planning to build an App (maybe Visual Studio Addin) which will help noobs like me to build POCO's rapidly.The GUI of the APP would probably be a datagrid with columns for
1) access modifiers
2) property name
3) data type
4) get method (checkbox)
5) set method (checkbox)
Also, the app will have an option to connect to the table and automatically generate a POCO class I would like to generate Strongly typed C# / VB.NET POCO classes for different Scenarios, Like Entity Framework, LLBLgen etc. I am mainly targeting LLBLgen and EntityFramework?I need the following information:
1) Is there such a tool which already exists
2) What are the things that I have to consider (like nullable types etc)
3) The DataTypes generate by ORM's LLBLgen/EF/nHibernate
Ok... So I have created my model using EF4. Great!I then turned off the code generation and downloaded this extension: [url]...Ran it, and it generates all of my classes. Is that all I have to do? It seems to work, my repositories get to the objects and persist to the DB.
[code]...
Where does the service layer fit in?What about the AutoMapper? Do I even need to use that now?Dependency Injection?
I have a POCO object and I want to mark a property as a key (see TestClass below).I'm getting the following error. 'Key' cannot be used as an attribute because it is not a class. C:UserszzzDocumentsVisual Studio 2010ProjectszzzzzzBOTestClass.vb
I have a webpage with a form that is used to edit some object. This object contains a Collection of other objects defined like this: Public Overridable Property Employees As List(Of Employee)
On a form I can delete an employee, add a new one or modify existing one. When I click save new values are sent to the server. On a server I check if the user exists. If exists then I modify its values, if it does not exist then I add it. All employees that exist on the server and were not sent are marked as deleted (State changed to EntityState.Deleted). I try to use the following code (dbCollection = database entities, newCollection = collection sent from the form):
[Code]...
This code does not work, because changing to EntityState.Deleted removes the object from collection, and for each loop breaks, since the collection is modified...I know that I can overcome this problem by using a for loop or adding objects to delete to some other list first, but I hope maybe there is a pattern that would make my code nicer.
What resources I need to look for, to generate one png image out of three? Since there are sprite generators out there, that do not do what I want, I wanted to try by myself. The user interface should not be the problem, but i have no experience of generating bitmaps, especially those with transparent backgrounds. I will do that in .net. Letīs say I have 6 png files. I want to put them into one image, where there will be two rows of images in it, so 3 in row, 2 in height, 3*2. Every image might have a little different sizes, so i would need to fill up the space with, um, nothing..
I'm working with some very large files residing on P2 (Panasonic) cards. Part of the process we employ is to first generate a checksum of the file we are going to copy, then copy the file, then run a checksum on the file to confirm that it copied OK. The problem is, is that files are large (70 GB+) and take a long time to complete. It's an issue since we will eventually be dealing with thousands of these files.
I would like to find a faster way to generate the checksum other than using the System.Security.Cryptography.MD5CryptoServiceProvider I don't care if this means using a specialized hardware card, provided it works and is not to ungodly expensive. I would prefer to have a method of encoding that provided some feedback as to how far the process has gone along so I can display it like I do now.
The application is written in vb.net. I would prefer to be able to use it as component, library, reference within my application, but I'm willing to call an outside application if there is enough improvement in the speed of generating the checksum.
Needless to say, the checksum must be consistent and correct.
in vb.net while entering a new entry i want to assign a record a unique id like in case of numeric i do this way
Dim ItemID As Integer KAYAReqConn.Open() SQLCmd = New SqlCommand("SELECT ISNULL(MAX(ItemID),0) AS ItemID from MstItem", ReqConn)
[Code]....
in this case m using itemid as a unique id and the format is 1,2,3... and m finding out the max and assigning to a new record but how to assign if the previous id is of the a00001,a00002,a00003,a00004...so on. how i do i produce a unique id in this case
I have the following situation: An interface (Windows forms) to a dataset. It has binding navigator, binding source, table adater etc operating with a dataset. How can I make a textbox for an ID field automatically generate an appropriate number for the ID? Just like the sql server direct database editor generates an id for fields with the "is identity" and "auto increment" properties on.
I am working on a Point of Sale system using VB express 2008.I want to generate invoice with Barcode and also stock items with Barcodesort of Barcode system i should use for this and also how i can code to generate and pring the Barcod
When I close the form I get the message "Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information."at line obj_oledb_da.Update(dataSet).
i just don't like the gap that exists between the .net framework and SQL database. I've explored everything from EF to LINQ to raw sql command strings.Does anyone know a project acting like a generic editor for a database? Meaning adding tables and relationships and constraints at runtime and offering simple field validation based on the information generated by the database schema. I know you can always drag and drop fields from a datatable to a form and a wizard will give you basic navigation over it, but I was wondering, is there more to it?
I have a problem regarding the generation of random numbers in vb.net..I have code like this!!it generates the random number but both the numbers are same for my program the should not be same!![code]
I have an situation where i need to convert Doc file into PDF file. I am devepoing windows application in vb.net. and also i don't want to user third party dll if possible.
I have an MDI form with 3 nested children with in it. As of right now all it can do is display a new form.For example: each time I press the menu button, the new child form(Form1) is created. Now, if I press that same menu button a second or subsequent time a new Form1 is created and it appears over the previous one.
What I would like is that each time the event handler is triggered (a menu item_click on the parent form) that instead of a completely "new" child form being produced(a new window popping up) it would instead pull up the appropriate child form that is attached to the trigger.
I am new to WSSF and am wondering if it would work for solution with VB as the programming language if so how to achieve it. I have seen samples which generates C# code but my project requirement is VB .Net.
I have a windows form having combobox and textbox controls.. I have to generate a part number, consisting of combobox and textbox values included.. I can explain in detail.. This is the code i have used to define a variable "type"..
Dynamic SQL generation for the DeleteCommand is not supported against a SelectCommand that does not return any key column information. above error has occure during updating and deleting the record
Dim constr As String Dim con As OleDb.OleDbConnection Dim da As OleDb.OleDbDataAdapter Dim ds As New DataSet
[code]....
i set the primary key also records are present in database?
Getting the following error when running my application.Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information.On form load it reads the database to the textboxes for the user, they can then change their details.On clicking the save button I am attempting to update the database with the information from a textbox but the above error is thrown and I'm not a bit lost.[code]
"Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information."
The Code is as follows:
Dim Countr As Integer For Countr = 1 To GrdData.RowCount strTrnsUpdt = "select * from order_transaction where uniq_id='primary key of the field to be updated'"
I am working on an Excel report and I would like the top rows to be empty to allow for an image to be inserted. However, I do not want the image size to change the width of the columns and would rather the data below do that.
This is what I have so far: If ComDset.Tables(0).Rows.Count > 0 Then Try
I just realized the OLD tutorial here is still works. Here is the webpage link But that one is iText 2005. And now is 2011, I wonder if there's any nearest version of iText for vb.net ? didn't found the iText for vb.net in 2008 version.... is there anyone could clarify this? Because that 2005 version is using .Net framework 1 or 2. Very old... now I'm using version 3 & 4.
i am trying to teach myself vb (im only 14), and i'm not having a easy time. What im trying to do, i need a user to define a upper and lower bound of a range. From there i need to generate random numbers, a certan number of times, with in that range...this is my first problem.And then, i need to make counters to store/test all of these variables as even, odd, positive, negative and zero's ...that i need to append to a richtextbox to show how many of each. Im not even sure if rtb is the right object to use...you know, instead of textbox, or label?the last thing was to do with Private function as boolean. do I need this to test these variable?
I have developed a software, now i want to float in market on license basis, what i want to do is data, there should be some code which generate sever hardware key and then prompt for license key.
I have a container with different controls in it. This container can be shown 1 or more timeson a form. The number of times is not known when the application is build.So form with the number of containers must be generated by code. When the number of containers is high a scroll bar must be shown.My idea was to use the control TableLayoutPanel. The first row consists of the container with it's controls. When loading the form a number is calculated. This number is used to show the number of containers.
I am working on a macro style app for work. I need to have multiple text boxes and drop down boxes auto-populate a single text box at the bottom of the app. (see reference image)There will be two buttons, one to copy the generated text to clipboard, and another to clear the form (including drop down menus, or resets them to the blank state).The text boxes will be filled out during a call, and the text that is entered in them needs to be placed in a single text box at the bottom, in a specific order, and with 'filler text' in between. So, for example:[code]John Doe (123456), Has the following issue: Problem with Computer. And, was resolved by: Offered him assistance and corrected John's issue. Caller was satisfied.The red italic text above is text that needs to be 'filled' between the text entry from above. Then, I need to be able to have a button copy the generated field to the clipboard, as well as simultaneousness minimizing the app.And, I need a Clear Form button that clears all the fields, including the drop down menus.
