Cant Get Class In App_Code To Work In Code Behind Page For Simple Page?
Jun 8, 2010just a quick question -i cant get my class in App_Code to work in my code behind page for simple .net page, some light what doing wrong?
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just a quick question -i cant get my class in App_Code to work in my code behind page for simple .net page, some light what doing wrong?
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I have a logging class that, well, logs things. I would like to add the ability to automatically have the current page be logged with the messages. Is there a way to get the information I'm looking for?
View 4 RepliesI guess I might be missing something easy (or not) here. I have a class in App_Code which do some validations over Session and Request.Url, till here it's working fine. But then I need to get the actual page title. I know it's simple to get it in the page's code behind, but could I get it in a separate class like it is on my scenario?
View 8 RepliesI have a function that sends out emails when certain processes are complete. The function works great; however, in our testing lab, I want to be able to see the message that are going out and not have it actually send the messages. Since MsgBox does not work in the web environment, is there a way to open a new page/window from the common code? The page will have the message passed to it for display and I do not want to do a redirect as there are times when more than one email is going out.
View 2 RepliesI have a PlannerShiftView user control in the root folder of my ASP.NET web site. In my App_Code folder, I have a ShiftViewTemplate class that needs to instantiate a PlannerShiftView (for a TemplateField in a GridView). The problem is, the following code doesn't compile because the PlannerShiftView type is not available in what I deem to be the App_Code 'phantom namespace'.
Please can somebody explain to be what is happening here, as well as what to do. I know I can just move the ShiftViewTemplate out of App_Code, going against convention and without explantion, but that is something of a hollow victory.
Why the following code (asp.net 1.1) does not work?
//call.aspx
<script runat="server">
namespace DOTNETMath {
void Page_Load( Object s, EventArgs e )
{
ConstClass.DisplayEmployee("Testing");
}
}
</script>
//commonFunction.cs
namespace DOTNETMath {
Public Class ConstClass {
Public Shared Function DisplayEmployee(String x) {
Return x + " Hello ";
}
}
}
I have a MasterPage project which is a class library project (it includes themes, style sheets, menus etc) and all applications use them.
I am using the BasePage concept for dynamically adding title,meta tags and descriptions. This BasePage Class inherits system.UI.Page and the aspx pages in the project inherits the BasePage class.
Now i need to move this BasePage class from my application to the Master Page Project so that all the projects/applications can reuse the same code.
I tried add the basepage.cs in the App_code folder and tried calling it in the page directive like below
<%@
Page
Language="C#"
MasterPageFile="~/Master/Layout/MasterPage.master"
AutoEventWireup="true"
CodeBehind="xxxx.aspx.cs"
CodeFile="xxxx.aspx.cs"
Inherits="xxxx"
ValidateRequest="false"
EnableEventValidation="false"
ViewStateEncryptionMode="Never"
CodeFileBaseClass="~/Master/App_Code/BasePage<Page>"
Title="Title"
Meta_Keywords="xxxx,yyyy,zzzz"
Meta_Description="This is a test" %>
But i am getting error
Could not load type '~/Master/App_Code/BasePage<Page>'.
This was working fine till the BasePage class was inside the application. But once i moved it out of the project and added it to the master page project i getting this error.
Following is the code to insert userName from session and PageName into table to keep record that how many times a user does hit a particular page.
To avoid repitition of code I want to put the code in one class and want to inherit same code in each page.
How to get this task? Please do share with me? Here is the OK code:
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i create a class library and i want my code behind the page be there. in my page like login.aspx is a login control and i want to write some code for that but i got some error i don't know what i'm doing rong. the code behind in class library is:
[Code]....
and the codes in login.aspx page is:
[Code]....
after i buld the project the code behind doesn't find the MainLogin control
Is there any way to list all the class in my ASP.Net application(Including class in App_Code and Partial Class(aspx pages and asmx user controls)
View 3 RepliesI have two master page the second master page under the first , I try add code as
Code:
Response.Redirect(http://msn.com);
but as if something was not, I using pointer but not go to page from the ground up.
this is my tipical page
as you can see, i have a connection property and a function who return if the program can connects to DB with any error
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i want optimize my codei discovered that i must use connect() function in every page,i am thinking to creare a class who have connection property and connect() method and derive my page to it, is it a good idea?
I am inexperienced using classes so I'm sure I'm not doing things in a standard way. I have created a hierarchy: Deals,Deal, DealSlots, DealSlot that is represented by 4 corresponding vb files So I can reference like so in my aspx pages dim alldeals as class Deals some id=Deals.Deal(1).DealSlots(2).PersonID I created a Public Method GetDealData which is in Deals.vb and gets data from a database and attempts to populate the class variables.I have a test.aspx that uses this function like so:
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I created a webpage names Default.aspx. In its code behind i defined another public class named Test. Test class is not accessible in other pages code behind although it is defined as public.
View 8 RepliesI've got an ASP.NET 4 web forms application I'm building in Studio 2010. The solution has two projects. A web forms application and a class library. I have added a reference to the class libraryr project in the web forms project, but when I go a code behind page in the web forms project, it does not recognize the class from the class library and throws the "type or namespace <class> could not be found ...." error. Adding a using <class library projec> does not work either as it does not recognize that.
What am I missing?
i have my NEWS BAR script code in my home Page which inherits from masterpage like this :
<asp:Content ID="content1" runat="server" ContentPlaceHolderID="mainholder" >
I want to add a class and initialize a JS funcion behind my nested masterpage which is being dervised from an other master page. But when I add the following code in the PageLoade event in the code behined of my derived page then it give the folowing error
Exception Details:
System.NullReferenceException: Object reference not set to an instance of an object.
CODE-
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I want to read from database where I've stored a image in binary field and display a image.
while (reader.Read())
{
byte[] imgarr = (byte[])reader["file"];
Stream s = new MemoryStream(imgarr);
System.Drawing.Image image = System.Drawing.Image.FromStream(s);
Graphics g = Graphics.FromImage(image);
g.DrawImage(image, new Point(400, 10));
image.Save(Response.OutputStream, ImageFormat.Jpeg);
g.Dispose();
image.Dispose();
}
con.Close();
This piece of code doesn't work:
System.Drawing.Image image = System.Drawing.Image.FromStream(s);
I tried the code from this article. And I got the same mistake " the parameter is not valid ". Maybe I'm not aware of something, some setting in sql server or webconfig or sth else. Anyone else who has experience from fetching images from database? The parameter is not valid is the error message. db table contains data. What am I doing wrong?
In my ASP.Net web application, I have a base page that implements functionality that spans all pages of the web application and my web pages derive from this base page. Since there is a single master page for the entire website, I don't want to attach the master page in each of the web pages. So I attached the Master page via the basepage's OnPreInit method as follows:
protected override void OnPreInit(EventArgs e)
{
this.MasterPageFile = "~/Site.master";
base.OnPreInit(e);
}
However, when I switch to Designer view, I get the "Master Page Error"; The page has controls that require a Master Page reference, but noe is specified. Correct the problem in Code View.When I run the application, the webpage shows up correctly.What should be done so that the designer shows up correctly without having to go and set the master page explicitly in each of the web pages?
BTW, I am on Visual Studio 2010 and .Net 4.0
I am tring to access a custom property on my Master page in a custom PageBase that resides in the App_Code folder. I can get this to work no problem in a web app but im having trouble doing it in the website project.
PageBase:
public abstract class PageBase : ClientSidePageBase
{
public WebMessage Message
{
get
[code]...
The above sample is what is in my web application and works fine but if i try and put this in the App_Code it doesnt pick up the MasterPage class so I cant access the property.
I've developed a class and it is put in a .cs file under the app_code folder. The class is a public one and there is no namespace specifically defined for this class in the file.of my webpages uses this class. It works ok on my local machine. However after I uploaded the page to the web server and then try to display the page through internet, the sever told me the class name can not be found.
View 3 RepliesIf a static class is put in App_Code, does that imply only one instance will be created, shared by different http requests?Or each request still brings one request?
View 3 RepliesI have a question. When I create my website using vwd 2008 express, I can not create App_Code folder, actually there's no selection for App_Code folder when I right click on my website(only Theme, App_Resources, App_LocalResources, App_GlobalResources and disabled App_Data).
I try to add new folder and name it App_Code, then put a class in there. But I can reference to it in my code behind.
Is there something wrong with my VWD installment or this is not supported by Express version?
I am using VS2010 and am creating an ASP.Net application.I have declared a class called "Calculator" in a class file called "Calculator.cs" in the App_Code folder.I have a form called "CalcDemo.aspx" with a code behind file. I try and use the "Calculator" class but intellisense can't see it. I thought App_Code is the common code repository for any classes I define and should be visible to all ASPX code behind files
The namespaces are the same like Webapp1.xxxx
Is there anyway to actually have a class-file placed in any custom directory and still be able to compile it with the application?
View 4 Replies