ASP.net C# 3.5 Framework, working in Visual Studio 2008 currently.
What I want is a Generic Data Access Class. I have seen several of them but what I want is to see one that I pass the Connection String and the SQL statement and it will return a List of Objects or when only one item an Object or when no response needed a boolean to let me know if it succeeded?
recommend a data access class / helper class for Access databases, similar to the sqlhelper class found in the (Data Access Application Block)?
View 6 RepliesI want to bind grid using Bindlist(Generic class) and also ensure it does not have an impact on performance of the page.
View 2 RepliesI have written the following functions(1 & 2) in a class file(say abc.vb) to execute a sql statement in code behind.
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Since we can access the private data member of base class in the derived class with the help of friend function. How can we do the same in C# asp.net? I mean whats the alternative of friend function in C# asp.net
View 2 Replieswhere I can find a good generic tutorial on persistence data access layers?
View 2 RepliesWhat is a Generic Class Declaration? and when should it be used?
View 2 Repliespublic class NHibernateSessionPerRequest<T>:IHttpModule
{
public void Dispose() { }
public void Init(HttpApplication context)
{
context.BeginRequest += BeginRequest;
context.EndRequest += EndRequest;
}
}
How can it be registered in web.config?
How can I create generic class from System.Web.Mvc.ViewPage?
View 1 RepliesI have several custom classes that derive from a common base class so they share several members in common. I would like to be able to pass objecs from any of these three classes to a function that will "look at" common properties. However, it seems there is a catch 22 -- When I try to access a member (.FirstName) of the passed object, the computer reports an error that it thinks the member doesn't exist.
It seems to be a sort of contradiction -- since I didn't declare the type, the computer can't confirm existence, but it seems that it should have to take it on faith since the generic character of the type is specified by the code. Possibly there is something I don't know about that would fix this. I'm showing VB code for what I have so far. I went ahead and hardcoded an instance to confirm that the object exists and has the needed property. I commented out the line that had the code that resulted in the computer reporting an error.
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I can have a base class for views in an MVC project like this:
public class BaseViewPage : System.Web.Mvc.ViewPage
{
public string Something { get; set; }
}
And then in the ASPX I can do this:
<%@ Page Something="foo" Language="C#" Inherits="MyNamespace.BaseViewPage" %>
This works fine; the problem is when I try to do the same with the generic version:
public class BaseViewPage<TModel> : System.Web.Mvc.ViewPage<TModel> where TModel : class
{
public string Something { get; set; }
}
When I try to use this from the ASPX, like this:
<%@ Page Something="foo" Language="C#" Inherits="MyNamespace.BaseViewPage<SomeClass>" %>
I get the error message:
Error parsing attribute 'something': Type 'System.Web.Mvc.ViewPage' does not have a public property named 'something'.
Notice how it tries to use System.Web.Mvc.ViewPage rather than my BaseViewPage class. To make it more interesting, if I remove the "Something" attribute from the Page directive and put some code in the generic version of BaseViewPage (OnInit for example) the class is actually called / used / instantiated.
So, am I doing something wrong or is this a limitation.
I have a situation where I'm iterating through all the controls on a form, specifically looking out for any of these three types of controls: Labels, TextBoxes, CheckBoxes
I can, of course, get the type of the control and then use a Switch-Case construct to cast labels as Labels, textboxes as TextBoxes, and checkboxes as CheckBoxes.
But I'm wondering if there's a way to do something with one or two lines of code to gain access to the Text property of each of these controls?
I have a class (name PageBase) that is inhariting System .Web.UI .Page and all my .aspx page behind classes are inhariting this class. This way I have put some common things in PageBase class.
For showing errors I want to put showMessage funtion in PageBase as well so that I may have not put it in every page and it will easy to manage this way.
Probem is that how PageBase class will access a control which is in aspx page in its child class (child class of PageBase) .
I dont want to pass control as argument to function in parent class, is ther any other way ?
Actually i want to cast the type from find control to div but i cant find the class with div or body or form name why so?
View 5 RepliesCan i make obejct of a VB class from C# class, if possible then what i'll have to do?
View 3 RepliesSuppose we declare and define the variable in one class let say FirstClass and we want to use that variable in another class let say SecondClass which is outside of FirstClass .how to do this?
View 2 Repliesi am developing an web application using vs 2008..( i am new to vs 2008)
Is there any .net tool to generate data access layer or common classes ?
It looks that the old SqlHelper class from the Microsoft Enterprise Library has been mostly replaced by the Database class which is included in the new Enterprise Library version 5.
I have a very simple and trivial example:
using Microsoft.ApplicationBlocks.Data;
private void PopulateCheckBoxGroup()
{
const string strConnTxt = "Server=(local);Database=DataBindTests;Integrated Security=True;";
const string strlSql = "select Technology from PreferredTechnology where ParentId = 1";
CheckBoxList1.DataSource = SqlHelper.ExecuteReader(strConnTxt, CommandType.Text, strlSql);
CheckBoxList1.DataTextField = "Technology";
CheckBoxList1.DataBind();
}
I have a Customer database table with a text field named customerPicture with the name of the JPG file.
I have made a Customer Entity class with the LinQ to SQL Designer.
I also have a FormView displaying Customer instance binding with a LinqDataSource.
My problem is:
I want to make some modifications when some control want to bind the customerPicture field.
For example, when my FromView want to show the field customerPicture I want to return not only the JPG file name, I want to modify this string to add the complete file path and perhaps resample the image to a determinate width and height.
I know that is posible to defeine a partial class named Customer to implement certains partial methods, like OnCustomerPictureChanged(), but I dont know how to do this.
If I make, in this Customer partial class, a new method, for example getResamplePicturePath(), how could I invoke it from a FormView?
I'm new to ASP but not programming in general. What I'm trying to accomplish is to have an ASP page where an EU can make some selections and input some text into fields and, upon clicking a submit button, have that input transferred to an access (.Mdb) database's table. I'm not sure how to go about this though. I don't know if it would be an SQL line or a dump to a different file type and then to Access (.Mdb) or something I don't know about.
View 1 RepliesI am using DotNetOpenAuth in my ASP.Net Website. I have modified it to work with Facebook Connect as well, using the same methods and database structures. Now I have come across a problem.
I have added a Facebook Connect button to a login page. From that HTML button, I have to somehow pull information from the Facebook Connect connection and pass it into a method to authenticate the user. The way I am currently doing this is by:
Calling a Javascript Function on the onlogin function of the FBML/HTML Facebook Connect button. The javascript function calls a Web service to login, which it does correctly. The web service calls my data access layer to login. And here is the problem: FormsAuthentication.SetAuthCookie is set at the data access layer. The Cookie is beyond the scope of the user's page and therefore is not set in the browser. This means that the user is authenticated, but the user's browser is never notified. So, I need to figure out if this is a bad way of doing what I need or if there is a better way to accomplish what I need. I am just not sure and have been trying to find answers for hours.
I created a Class library for WCS service (MyWCFServiceLibrary) to access data form my database. The database connection strings have been defined in Properties->Settings.settings. The endpoints are defined in the app.config. Tracing and logging is set to write to files on local server. This service is hosted by a .net web service. This webservice refrences the WCF service using MyWCFServiceLibrary.dll and MyWCFServiceLibrary.pdb. The web service is hosted in IIS. All this setup is working fine on the development environment.Now I want to deploy this in the QA environment. Since I am a newbie with WCF, I would appreciate some help on what needs to be done for deploying this on the QA server.1. Do I need to recompile the MyWCFServiceLibrary.dll after changing the connectionstring to point to QA database and tracing and loggint paths to the new server?2. Is there anything that needs to be done with end points or anything else?
View 1 Repliesi have a gridview that show data from sql data source . how i can make a button for save as gridview data into mdb access file !?
View 6 RepliesI want to get the values from the Invisible rows from my gridview. here is my code.
<asp:GridView ID="gvTeam" runat="server" Width="900px"
AutoGenerateColumns="False" BackColor="White" BorderColor="#CC9966"
BorderStyle="None" BorderWidth="1px" CellPadding="4">
<Columns>
<asp:BoundField DataField="FULLNAME" HeaderText="NAME" />
<asp:ButtonField DataTextField="EVALUATION" HeaderText="EVALUATION"
Text="EVALUATION" CommandName="select" >
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I am working on a web project(asp.net with c#),In app_code there are 10 class files(.cs). I want to make only one DLL of these files. How can i do this.
View 6 Replies
