I create a database with more than 10 tables, how can I automatically generate business object class inside asp.net C# project?
I hope that one expert can give me steps for how to do that?
I would like to generate my links automatically via a static class in each of my aspx pages (or in a common BasePage).Currently I use this:
private const string TEMPLATE =
"~/One.aspx";
public static string Link ()
(
string link = String.Format(TEMPLATE);
return link;
)
But the name of my page, One.aspx is hardcoded. Is it possible to generate the path instead of this hardcoded constant TEMPLATE. You should know that I do not instantiate the class before creating the link.
I have created an extended method for DataTable. I want to generate a class automatically in my solution when i call that method while writing a code as Visual studio does when it doesnt find the method.e.g mytable.mymethod(); Generate a class
View 2 RepliesI have a profile object in session with profile information for the currently logged in user. I wand to be able to inject it into my business classes so I can do validation etc in them without having to pass it in the parameter list in every method.
I have tried something like this in my ninject module:
Profile profile = HttpContext.Current.Session["Profile"] as Profile;
Bind<Profile>().ToConstant(profile).InTransientScope();
However it blows up with null reference when I do Kernel.Get() in my aspx. The BusinessObject takes a profile via the constructor. If I hard code the profile instead of using the HttpContext then everything seems to work. Not sure if ToConstant is the way to go, I am really looking for something that will get evaluated every time a new BusinessObject is created.
UPDATE
It seems that asking for injection to happen on a page level object inline is too soon for the session collection to be available. If I move in the Kernel.Get call to Page_Load it works just fine.
In ASP.NET Webforms have an ASP.NET GridView connected to a C# class via an object data source
I have an ID set up as a DataKeyName in the grid. How do I pass this to the C# class when I update the grid?
In ASP.NET Webforms have an ASP.NET GridView connected to a C# class via an object data source
I have an ID set up as a DataKeyName in the grid. How do I pass this to the C# class when I update the grid?
Again, I am new to the ASP.NET world, and I come from a Windows Forms background. I'm working with an ObjectDataSource that retrieves a collection of business objects. With the collection, I am going to be binding it to a CheckBoxList and other various controls. The business object that I am using is an Employee.
To get all of the employees, I create an ObjectDataSource and set the "Select" method. I then set the DataSourceID of the CheckBoxList to be that of the ObjectDataSource. When I load the page for the first time, I see all of the employees. Now, the user goes through this page and selects all the employees they want to see information about (by checking the box next to the employee name). Finally, the user hits the button called "Display." Upon postback how do I get a list of those employees? I've tried the following solution, but I'm not sure if it's the best practice in obtaining all those employees again. Here's my solution...
In the CheckBoxList, I set the DataTextField to the Employee's name. I also set the CheckBoxList's DataValueField. This property is a little different. I set this to be a UNIQUE IDENTIFIER, which can distinguish this employee from other employees. Now, when the user hits the button "Display" I use my ObjectDataSource again and MANUALLY call ObjectDataSource.Select(). I cast the returned value as a List<Employee>. Finally, I iterate through all list items in the CheckBoxList...
[Code]....
If the item is selected, I parse through my list of employees that was returned from the bjectDataSource.Select(). I use the item.Value and compare it to each employee's "key." If the key is found, I know that the employee is selected. I put this employee in another list called EmployeesSelected.
Finally, I take EmployeesSelected (which is a List) and set my GridView's .DataSource and call .DataBind() on the GridView.
Is this the "best practice" of re-obtaining the Employees that are selected on my page, or am I making this too complicated?
I have a small web application based on asp.net 2010 that manages invoices.
After the invoice is saved, it should automatically generate a pdf file.
which of the following solutions would be fast and easy to incorporate?
Use Sql Server 2008 Reports
Use Crystal Reports 2008 and Crystal Reports 2008 for VS 2010
Use itextsharp to create the pdf file
Use XSLFO to create the pdf file
The point here is I dont know any of the above. Which one is easy and quick to learn and implement. Are there any other solution to achieve this functionality?
I am getting this error
Must declare the scalar variable "@InvoiceNumber". in the following code, although i declared InvoiceNumber as a parameter in the Datasource object.
public class GetDetails
{
public static DataSet Details(string InvoiceNumber)
{
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);
[Code]....
I have a business object that looks like this:
[Code]....
What is the value of SomeId after I create an instance of my object? I was testing it with SomeId == 0 but it wasn't working. Then I tried null which gives me an error.
What is the right way to handle this? Am I to assign an initial value to my objects' properties in the object? If not, how do check if my object has any values assigned to its properties -- in particular, int values?
I just have a need where I have to select only selected attributes/fields of a very large business object. I ended up designing a DTO and a collection class for that DTO. Few questions.Is there any difference between a DTO and a dumb business object ? I filled the DTO inside the DAL and loaded it inside a DTO list and now returning to Business Logic layer but it seems its the same like dumb business objects to me (with only less attributes)
View 3 Repliesi want to automatically generate a unique string as orderID. I dont want to use Guid, it is not user frindly, and i dont want to use indexer either. any build-in datatype i can use?
View 11 RepliesI have a property on my Global.asax.cs class that I need to access from a business class, i.e. using HttpContext.Current. How do I do this? Global.asax.cs (in a web project)
public partial class Global : System.Web.HttpApplication
{
public static ProxyGenerator Generator = new ProxyGenerator();
Business class (in a separate business project)
var generator = ((Sei.Osp.Web.Global)HttpContext.Current.ApplicationInstance)
This obviously doesn't work and I don't want to reference the whole web project in the business project as it will create a circular reference (the business project is already referenced in the web project)
UPDATE:
To clarify - the property I'm creating holds an instance of the Castle Dynamic Proxy Generator class. I've read that you shouldn't just create this all over the place. So I thought I'd create it in my Global.asax.cs and then just use that instance wherever I need to create a proxy class (I'm using it to do AOP) Is there a better way of doing this?
This not an 'MVC' question per se, but this is the closest forum I could find. I am building web/wpf/silverlight front end on the MVP pattern. I am using EDMX and a 'business logic' class to form the model, a presenter project, and a view project.The IViews contain the basic structure of each entity, the presenter contains actions, etc.Sample view:
[Code]....
Sample presenter:
[Code]....
QUESTIONS:I seem to end up with a 1-1 mapping of views and presenters. SHould there be more than one view per presenter, or more than one presenter per view? Should the presenter for an entity (in this case a User) also contain methods for functional items such as searching for a filtered list of Users using overloaded methods, etc.?Should the IViewXYZ interface contain any events or actions (methods)?
How do it do this. I have this at the moment
[Code]....
[Code]....
This takes a large INT and returns 4 strings from the BO structure HotelFacilities
If I set the private from string to AccommodationBO.HotelFacilities it is fine
If I set the public from string to AccommodationBO.HotelFacilities it moans because the Set section of the private property is wrong. But the set would be an INt.
All I actually want to do, is populate the BO Structure and passit to the user control using a property in the user control code behind. Is this possible ??
Dim jim As New GetAccommodationPricesBLL
I am using ASP.NET MVC 2.0 and I want to transfer my ViewModel properties to business object. I can do this manually or use AutoMapper or use new method available in ASP.NET MVC 2.0. My question is that does anyone know the name of the new method which allows to copy the properties from one object to another?
View 1 RepliesWhat exactly is the e.Row.DataItem return.. MSDN says.. returns An Object that represents the underlying data object to which the GridViewRow object is bound.
Here is my DataGrid...
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="ObjectDataSource1" OnRowDataBound="GridView1_RowDataBound">
<Columns>
<asp:BoundField DataField="PracticeCode" HeaderText="PracticeCode"
[Code]....
Note : There could be other ways to accomplish this, but I'm looking especially why my p1 is null... and is there any way to get the Patient Object back from GridView after binding.
Is it possible to bind a rdlc report to a business object (.NET 4/VS 2010)In my report I have TextBoxes called Name and Email.Say I have an object Person with properties Name and Email.Can I bind the .rdlc with an object Person at runtime?
View 1 RepliesI do not know how to create a business object for inserting data into the database.
View 2 Repliess there any code to generate property automatically from datatable?I mean there is a table A with column id,name,address.Run the code and this will generate a class automatically to set and get property.Property of that class will be the column name of the datable A.
View 1 RepliesIs there any code to generate three or N tier architectue automatically?
View 8 RepliesI use Linq to Sql (although this is equally applicable in Entity Framework) for my models, and I'm finding myself creating buddy classes for my models all the time. I find this time consuming and repetitive. Is there an easy way to automatically generate these buddy classes based on the models? Perhaps a visual studio macro?
[MetadataType(typeof(PersonMetadata))]
public partial class Person
{
}
public class PersonMetadata
{
public object Id { get; set; }
In our application we have to access session objects in business class. We are using HttpContext.Current.Session to get the session value. In some cases it returns the value but mostly its throwing a null reference exception(Object reference not set to an instance of an object). We have the following code Try
If HttpContext.Current.Session("Username") IsNot Nothing then
' Statements to be executed
End If
Catch ex As Exception
'Log to db
End Try
Here HttpContext.Current.Session("Username") is mostly throwing an exception "Object reference not set to an instance of an object" While debugging we found that HttpContext.Current itself is nothing.
I am a new to ASP. Very experienced in MS Access... Logical move to ASP.
Problem:
When designing my first .aspx on PC and testing via localhost; all is well.
When move to server I get this error msg:
"The type specified in the TypeName property of ObjectDataSource 'ObjectDataSource2222' could not be found."
I have been reading for a solution for the past three days.
My reading tells me that there should be a reference somewhere in the web config file to id the business object dataset , but do not see any. No luck in surfing for a tip either.
I thought Visual Studio 2010 was a rapid app that allow one to design and test on PC and move easily to server for production. I am I expecting to much.
I've created my dataset in my App_Code folder. I tested it so it works, But then when I add in my page an ObjectDataSource, it can find any object the list is empty. I looked for online some solution but I didn't find something which worked. It works when I add the code manually, but i would like to understand how come, which part I misunderstood.
[Code]....