For reasons I won't go into I need to use CLR generics syntax in an ASP.NET MVC view.
I.E. NOT this:
System.Web.Mvc.ViewUserControl<someobject>
but this:
System.Web.Mvc.ViewUserControl`1[[someobject]]
When I run the application I get
Parser Error: could not load type `System.Web.Mvc.ViewUserControl`1[[someobject]]
The following CLR syntax works fine in my aspx page:
<%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="Website.MyBasePage`1[HomePageViewModel]" %>
But this C# syntax does not:
<%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="Website.MyBasePage<HomePageViewModel>" %>
Note, I am not using ASP.NET MVC, but this works fine if using System.Web.Mvc.ViewPage<> from ASP.NET MVC.
My MyBasePage looks like this:
public class MyBasePage<TModel> : Page where TModel : class {
public TModel Model
{
get { return (TModel)HttpContext.Current.Items["model"]; }
}
}
I know that in ASP.NET (talking about 2.0 here primarily) one can set a property on an object that takes a collection of things (an enumerable type I'm guessing is the trigger) and then reference it declaritivly. For example:
<ObjectDataSource properties="blahblahblah">
<SelectParameters>
<asp:Parameter />
</SelectParameters>
</ObjectDataSource>
It is the <asp:Parameter /> part which is the root of my question. Say I wanted a simpler collection on a type. Say a List<String> or if generics are out, an IntegerCollection or StringCollection. How would I use that declaratively? Is <string value=''> allowed, or can I put raw values into it like <StringCollection>string, string, string</StringCollection> or what?
EDIT:
I feel like I was not clear enough in my question. I understand that ObjectDataSource implements its SelectParameters property as a ParametersCollection, and that one can use that property declaratively (in an ASPX page) to set up Parameter types within that collection. What I'm wondering is if I made something like StringCollection as a property on another control, is there a syntax (in ASPX) for adding strings to that collection? Or would I have to define a wrapping class like how DropDownList takes ListItems to fill its collection?
Is it possible to set the Inherits attribute of an ASPX Page directive to a class in an arbitrary assembly?
I need to modify an ASP.NET (1.1) application for which the source code was lost. In a new assembly (foo2.dll) I've created a replacement code-behind class that derives from the original class in the site's code-behind assembly (foo.dll). It seems easy enough to set the Inherits attribute of the Page directive to the new class name, but when I do that the web server gives me Could not load type 'Foo2.checkout2'. I am referencing the new assembly in the <assemblies> section of Web.config.
I don't see anything in the documentation to indicate that this scenario is unsupported, but I'm not certain that it is, either.
Original
<%@ Page Inherits="Foo.checkout" language="c#" Codebehind="checkout.aspx.cs" AutoEventWireup="false" %>
New
<%@ Page Inherits="Foo2.checkout2" CodeFile="checkout2.aspx.cs" CodeFileBaseClass="Foo.checkout" language="c#" Codebehind="checkout.aspx.cs" AutoEventWireup="false" %>
Having a really strange issue at the moment with an ASP.NET site I'm currently building. At the moment, I'm writting the HTML and CSS for a page called Dashboard.aspx. But when I go to view the page in a browser, half the time it throws up this error: ASPNET: Make sure that the class defined in this code file matches the 'inherits' attribute, and that it extends the correct base class (e.g. Page or UserControl). I've checked the Inherits attribute on the .aspx page, and it matches the Partial Class held in the VB code of Dashboard.aspx.vb file.
When I refresh, it will always come up with this error. Then after a minute or two, it will load fine with no problems. I had a quick look on Google and I couldn't find an answer to this issue. I have also changed the name of the partial class (and the content placeholder on the .aspx file, thinking that may have caused a conflict) and nothing I do seems to fix it. Could anyone shed any light on what's going on?
inside my model metadata, i have a timespan field that would like to display in all Create, Edit and Display views like "hh:mm". For this, is set DisplayFormatAttribute as follows:
[Code]....
When i try to create a new model object, the time field gets displayed as "00:00:00" im my model (00 is the initial values) instead of "00:00". Is there something i am doing wrong? Note that the same approach works for date fileds, where i want to be displayed as "dd/MM/yyyy" (for this is assign "{0:dd/MM/yyyy}" to the display format attribute).
I will declarate a attribute, but it gives me an error
This query works fine and returns 1 record from type int:
SELECT TOP 1 DataObjectVersionID
FROM tblDataObjectVersionPropertyValueText
WHERE PropValue like CAST('00010281' AS ntext)
ORDER BY DataObjectVersionID DESC
And when I will declarate a attribute/parameter it gives me an error:
DECLARE @dataObjectVersionId INT
SET @dataObjectVersionId = SELECT TOP 1 DataObjectVersionID
FROM tblDataObjectVersionPropertyValueText
WHERE PropValue like CAST('00010281' AS ntext)
ORDER BY DataObjectVersionID DESC
Error message:
Msg 156, Level 15, State 1, Line 2
Incorrect syntax near the keyword 'SELECT'.
I have a class, let's say class Sample. Sample has unknown properties but inherits an interface ISample. Said interface includes one method which I'm trying to create. This interface has a method called getPropertyValue(object o, string PropertyName).
It returns the value of the o.PropertyName using generics (unless you have a better suggestion). How do I write it? In other words, I want to be able to pass the name (as a string) of a property and return its value. Samples in C# preferrable but VB ok and any comments or suggestions are welcome.
I am having a problem understanding how polymorphism works when using generics. As an example, I have defined the following program:
public interface IMyInterface
{
void MyMethod();
}.....
So, at least I haven't completely misunderstood that. I am unsure exactly how I am to write a method that accepts a generic collection of classes that conform to the same interface.
I have a plan to completely hack around this problem if need be, but I would really prefer to do it properly.
i am trying to implement a generic method which allows to output csv file
public static void WriteToCsv<T>(List<T> list) where T : new()
{
const string attachment = "attachment; filename=PersonList.csv";
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ClearHeaders();
HttpContext.Current.Response.ClearContent();
[Code]....
but I am not able to get the value of the object's property
I'm working with some XML representations of data instances. I'm deserializing the objects using .NET serialization but something in my soul is disturbed by having to write classes to represent the XML... Below is what I'd LOVE to do but I don't know if the syntax or if it is even possible:Consider the following:
dim xmlObject = SomeXMLFunction() 'where some function returns an object/string representation of xml...
xmlObject.SomePropertyDefinedInTheXML = SomeFunction()
I had asked with one question in the interview regarding generics
How can we restricts the one generic method to take only the value types.It should not be able to take reference types.
I tried so much working with this to get distinct Words and their count. I'm using ASP.NET 2.0. And i also googled so much.
1)Ex(String): The DOTNET is Very Cool! The Best.
2) Capture all the sequences like Space, FullStop, Question Mark, Exclamation, Apostrophe, New Line....(May be with RegEx?)
3)Split Words According to the above sequences
4)Get Distinct Words(Occurences) and their count based on the input string in 1st statement.
Desired O/P:
The - 2
DOTNET - 1
Is - 1
Very - 1
Cool - 1
Best - 1
This is my Sample Code for your Ref.
[Code]....
I'm having problem in inserting text from a textbox in which user write or copy some text which may contain special characters ( " , . ) etc. If there is any special character it get conflict with CommandText Syntax and generates error in inserting. I want to insert all these characters. How could i do it?
Code:
[code]....
I am learning MultiView control.Here are question:I added 5 views in the MultiView but all views are tight together. I can not drag and drop another control such as text boxes or labels into view area.
View 15 RepliesFor reporting we used report RDLCs and displayed using an ASPX form. We implemented using the route as shown below. This resulted in forcing us to use the page route below and also to use the hyperlink instead of the normal Action Link. The question is how do we convert the asp:hyperlink ASPX syntax to Razor syntax.
//Custom route for reports routes.MapPageRoute( "ReportRoute", // Route name "Reports/{reportname}", // URL "~/Reports/{reportname}.aspx" // File );
<li><asp:HyperLink ID="hypReport" runat="server" NavigateUrl="<%$RouteUrl:routename=ReportRoute,reportname=StaffRpt%>">Staff Report</asp:HyperLink></li>
<asp:GridView ID="GridView1" runat="server">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:TextBox ID="TextBox1" onchange="calculate()" runat="server" Text="0"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
I'm getting this error on the above markup: Message 1 Validation (ASP.Net): Attribute 'onchange' is not a valid attribute of element 'TextBox'.
I have a problem with my web site 1stSigBdeAssn.org. I have made no changes to the site but I now get the following error message:
Parser Error Message:
Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive.
Source Error:
[code]....
I created a simple Master Page in Visual Studio 2008:
<%@
Master
Language="VB"
CodeFile="MasterPage.master.vb"
Inherits="MasterPage" %>
<!DOCTYPE
html
PUBLIC
"-//W3C//DTD XHTML 1.0 Transitional//EN"
and got green underlined 'Master' with two warning messages: 1.Validation (ASP.NET): This attribute name must be followed byan equal (=) sign and a value. If the value is in quotation marks, the quotation marks must match. 2. Validation (ASP.NET): Attribute 'Master' is not a valid attribute of element 'Control'.How I can get rid of the messages?
I have an MVC view that contains a number of partial views. These partial views are populated using partial requests so the controller for the view itself doesn't pass any data to them. Is it possible to reload the data in one of those partial views if an action was triggered in another? For example, one partial view has a jqGrid and I want to refresh the data in another partial view when a user selects a new row in this grid. Is there a code example for this scenario (in C#) that I can look at to see what am I doing wrong? I am using ajax calls to trigger a new request but non of the partial views are refreshed so I am not sure if the issue is with the routing, the controller,
View 1 RepliesI had a problem with my website caused by using a masterpage built with a previous version of Visual Web Developer. So I created a new masterpage and renamed it to the same as the old one. It works locally but when I upload onto the host site I get the following error message: error ASPNET: Make sure that the class defined in this code file matches the 'inherits' attribute, and that it extends the correct base class (e.g. Page or UserControl).How do I get it to also work on the host site?
View 3 RepliesI just uploaded files to my website and am getting a parser error when it comes to the Inherits word. If the exact error , you can look at [URL] the required dll is located at [URL] if it i got the web host godaddy sells. Also I thought it would be worth noting that if I remove the Inherits from the page there is no error.
View 1 RepliesThis maybe bad practice but it's the way things are currently done here. We have a template .aspx file and when someone creates a new page they take a copy of this page and rename it and it's .vb counterpart, as well as changing the CodeFile attribute in the .aspx page. What doesn't change is the Inherits attribute, this is always 'template_file'. Recently I had an issue where I uploaded a new web.config you out testing server and all the pages started erroring, I can't remember the exact error but it was because all the pages had the same Inherits value. I changed all the pages so they had unique Inherits values and all was good again.
View 5 RepliesI wants to know, How a web form automatically inherits System.Web.UI.Page when creating a new webform.
View 2 RepliesI wanted to create a custom class that inherits from System.Exception and adds a few properties and methods specific to the project.
The issue I'm seeing is that a standard try/catch block catches generic Exception class and the compiler thinks that converting that to my custom class is OK. However, at runtime if the actual error is something else like a a System.Net.WebException for instance, then at runtime it will not convert to my custom class. Then my own error catch throws an InvalidCastException.
Obviously the one thing I don't want to happen is to have my error logging methods throw errors on their own...
So, how can I convert ANY exception to something that my custom class can use?
Here's a code example:
Csharp Code:
[code]....
Now, this code builds just fine... VS2008 and VS2010 have no issue with converting an "Exception" to "MyErrorClass", but at runtime it certainly doesn't like converting a "WebException" to "MyErrorClass"...