- Control Is Found But It's Not Implementing The Interface?

Oct 20, 2010

We have a WebForms Control which requires that the ID of another Control implementing ITextControl is provided.What exception should we throw if there is no control with that ID or a control is found but it's not implementing the interface?

Should we split it into two cases and throw one exception if there is no control with that ID, and another one if said control does not implement ITextControl?If so,which exceptions should we use then?

View 3 Replies

Similar Messages:

Custom Server Controls :: Implementing An Interface From A Class Library In A Custom Control?

Jul 8, 2010

I'm building an n-tier application, with the web client and the class library separate. I'm also using the factory pattern of development, using interfaces to act as containers for different objects they are associated with. The problem I'm expreriencing is that I declared a public interface class in the class library and I can create an instance of it in in my aspx pages but whenever I declare it in my custom control code-side, i get an error, like so:

Error 20 The type or namespace name 'IContentMaker' could not be found (are you missing a using directive or an assembly reference?)

notge that I have inherited the class library namespace using the 'using' keyword just in case you are wondering. My code is like so:

using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using TQO_Classes ; //importing the class library project
public partial class PageContentMgr : System.Web.UI.UserControl
private IContentMaker _data; //this line throws the error, it works fine on aspx pages

View 1 Replies

Implementing Interface In An Aspx Page?

Feb 8, 2010

for reasons beyond the scope of this discussion (say xcopy an aspx page to a directory, so that we dont have to get a new build out) , we would like to implement an interface in an aspx page.Say, if the page is myPage.aspx, it is usually your class in the codebehind mypage.aspx.cs which implements the interface. When I do something like this

<%@ Page Language="C#" AutoEventWireup="true" Inherits="ICustomInterface" %>

I get an error

Parser Error Message: 'ICustomInterface' is not allowed here because it does not extend class 'System.Web.UI.Page'.

How ever, when not specifying an Inherits attribute the page does not throw an error. So by default, when we do not specify an Inherits attribute, the page inherits from System.web.UI.Page ?

We are using VS2008 web application project and are not precompiling the aspx pages. We would like to intercept the request to this page in the HTTPModule (begin request) and if the request is to a page of type ICustomInterface we would like to process it differently.

View 1 Replies

Alternative For Static Method In Interface - Enforce Implementing Class-level Methods

Oct 28, 2010

I have a hierarchy in my website project as below:

[CustomControl1 - folder]
- CustomControl1.ascx
- CustomControl1.css
- CustomControl1.js

I load css and js files dynamicaly based on which controls are used on particular page. I am doing it by using following code:


where AddLinks method adds HtmlLink controls to Page.Header with href attribute set to coresponding css and/or js file.

I would like to add Interface that would force new controls to have AddLinks method but it is impossible since it is a static method. Because my custom controls inherit from Control class I cannot use abstract class and/or virtual methods either. How can I achieve my goal?

View 1 Replies

MVC :: Error While Implementing Pagination- Resource Not Found HTTP 404?

Jan 24, 2011

In my solution, I added the following class in the Helper folder


Now, In my HomeController, I used following Index function


And in Global.asax.cs, routing as


In my View of Index funtion, I have following code


Now the problem is on opening sitename/Home, I am getting 2 post as required but when I click on next then I am getting HTTP 404 Error. The url formed is like sitename//Home/Page/1. (Edited later- Typo. Single / not //)

View 4 Replies

How To Make A Class Recognize That An Interface Found In A Separate File Exists

Mar 8, 2010

I've made an interface called ApprovalEvent in a separate file with the namespace myproject... I've also made a class called PurchaseOrder... it's also in the same namespace, just in a separate file. Whenever I try to make PurchaseOrder implement ApprovalEvent it always says that ApprovalEvent is undefined...

How can I make the class recognize that the interface exists but is in a different file?

Here's some code:


View 1 Replies

C# - How To Tell If The Control Or Control Interface Is Editable By The User

Dec 1, 2010

I'm looping through an array of controls and need to know which controls an end-user has the ability to (via JavaScript or directly) change the value that gets posted back. Where can I find such a list?

So far I have this:

Private Function IsEditableControl(ByVal control As Control) As Boolean
Return TypeOf control Is IEditableTextControl _
OrElse TypeOf control Is ICheckBoxControl _
OrElse GetType(ListControl).IsAssignableFrom(control.GetType()) _
OrElse GetType(HiddenField).IsAssignableFrom(control.GetType())
End Function

View 2 Replies

Which Control Have Visible Interface

Aug 27, 2010

Q. Which control have visible interface.

1. Repeater
2. Datalist
3. Dropdownlist
4. Datagrid

View 2 Replies

How To Control The Permission-related User Interface

Mar 25, 2011

I am new in developing using

I use java(struts2) to do the web application before,it is easy to control this use the jsp tag or struts2 tags: For example(suppose the "do something" operation need use login):

<s:if test="#session.user!=null">
<span>do something</span>

So if a user did not login,he will never see the menu of "do something".

Now I wonder how to make it in the

Is this controled in the xx.aspx.cs?

View 1 Replies

Web Forms :: Implementing Querystring In Menu Control?

Jun 27, 2010

I have included a flash menu inside the master page. The menu is embeded in the masterpage as an object using <embed> tag.

I have given the link of the menu items as main.aspx?q=Electonics

or main.aspx?q=computers


What i am trying to do is.. that when a user will click over a menu item, he will be directed to menu.aspx and depending on the value of q I will change the content of the webform dynamically.

Eg: If he clicks over the item corresponding to main.aspx?q=computers , then he will be directed to main.aspx but the content will be related to computers

similarly if he clicks over main.aspx?q=electronics ,then he will be directed to main.aspx but the content will be related to electronics

But i m facing problem implementing this concept.

View 2 Replies

JQuery :: Implementing The Listview Control With Delete Link And Lightbox?

Nov 8, 2010


Implementing the listview control with delete link and lightbox?

View 1 Replies

C# - Web Control Added In .master Control Type Not Found In Child Page?

Jun 7, 2010

I have a Web Site project, and within it I have a user Web Control defined in an ascx file.The control is added to the Site.Master, and it shows up correctly on the page and everything is fine.I need to override some of the control's fields on one of the pages that derive from Site.Master.

// In OnLoad:
MyControlName control = (MyControlName) Page.Master.GetBaseMasterPage().FindControl("controlID"));

The issue is that MyControlName doesn't register as a valid Type on the child page. If I add a second instance of the control to the child page directly, the above works as needed, but if the control isn't placed directly on the page, and instead is only defined in the master page, the type is undefined. The control is not in a namespace, and is defined within the project, so I don't know why it is having such an issue location the appropriate type.If I put a breakpoint in the OnLoad, the type listed for the control is ASP.my_control_name_ascx, but using that does not work either. Why can't the child class reference the correct type? Can I fix this?

View 3 Replies

Forms Data Controls :: Display The Gridview Control With An Interface That Is Ready For Inputting Data Into Columns?

Jan 6, 2010

how to display the gridview control with an interface that is ready for inputting data into columns. Bsically I want the grid to display initially in update mode without the user having to click the update link or button.

View 1 Replies

AJAX :: AutoCompleteExtender - Display No Records Found Message When No Matches Found

Jul 18, 2013

I found this very useful [URL]....

How to display No Match Found when there is no data with the entered initials.

Ex: zz

Output No Match Found

View 1 Replies

Control Not Found In Custom Template?

Dec 15, 2010

I take a user control file. I put this


View 1 Replies

Will This Code Get The Value Of The Found Control? Syntax

Feb 18, 2010

x.Parameters.AddWithValue("@areasexpertise1", FindControl("AreasExpertise1"))

It should find AreasExpertise1 and make a parameter, but does that get the selectedvalue too?

View 1 Replies

C# - 4.0 Type Not Found When Using MS Report Control?

Feb 4, 2011

I'm trying to build an ASP.Net c# application using the report control, it works fine on my PC running from VS2010 but when I publish it to my web site which is a shared hosting system I get:

'Type' is undefined Reserved.ReportViewerWebControl.axd?OpType=Resource&Version=10.0.30319.1&Name=ViewerScript, line 1 character 1
'Microsoft' is undefined Reserved.ReportViewerWebControl.axd?


View 1 Replies

AJAX :: Control Id 'chkCode' Not Found By UpdatePanel?

May 11, 2010

I have a Datalist with ID="dlCodes" and I have chechbox control with in datalist with id="chkCode".I want this chkCode as a trigger for my button click id ="btnContinue".both button and datalist are placed in update panels.


View 5 Replies

AJAX :: The TargetControlID Of 'ViewAdd' Is Not Valid. A Control With ID 'lnkedit' Could Not Be Found

Jun 24, 2010

I have template column in grid view where data is binding to a link button. Now I want to show my model popup on click of that link button but it is giving error :

"The TargetControlID of 'ViewAdd' is not valid. A control with ID 'lnkedit' could not be found."




View 1 Replies

AJAX :: Remove The Configuration Error Found In The Control ToolKit?

Nov 24, 2010

How do I remove the Configuration Error found in the ASP.Net Ajax Control ToolKit?

Error Message reads: "The Master Page file .... DefaultMaster.master cannot be loaded Correct the problem in Code view"

<%@ Page
Title="HoverMenu Sample"
Theme="SampleSiteTheme" %>

View 3 Replies

AJAX :: A Control With ID Txtamt Could Not Be Found For Trigger In Update Panel UpTotAmt

May 7, 2015

Here txtamt is the item template of a gridview and uptotamt is outside of the gridview.

<asp:UpdatePanel ID="UpTotAmt" runat="server" RenderMode="Inline" UpdateMode="Conditional">
<asp:TextBox ID="txttot" runat="server" CssClass="texttot" Width="180px"
Enabled="False" ></asp:TextBox>
<Triggers >
<asp:AsyncPostBackTrigger ControlID="txtamt" EventName="TextChanged" />

View 1 Replies

Custom Server Controls :: Implementing PostBackUrl Feature In A Custom Server Control?

Dec 20, 2010

I've build a custom server control inheriting from WebControl. Basically it is a kind of button. All is working perfectly except one thing: the PostBackUrl is inoperative.

I probably forgot to implement something. Actually I just added the property PostBackUrl. Probably I should also implement an interface of call something.

View 4 Replies

Forms Data Controls :: Webpage Not Found When Clicking Sort Or Pagination Links On Gridview Control

Feb 3, 2011

I have created a website that has some gridview controls that call stored procedures in a SQL db and display the results of the procedures. Two of the gridview controls have sorting enabled, and one has pagination enabled.

The site loads for all users who have tried it so far.

However, one user gets a "webpage not found" (HTTP 400 Bad request) error whenever they click on the pagination links or sorting links on the gridview control. It seems like it's not a security issue because the website runs as a user with permission to the database.

View 3 Replies

Web Forms :: Display Not Found Image If The Original Image Not Found?

Sep 22, 2013

in my web i am using this code to display image of workers in web page as per their id and it works fine

Dim id1 As String = "11022"
id1 = " + idtxt.Text + "
Image1.ImageUrl = "~/photos/" + ID + ".jpg"
End If

there persons whose photo is not uploaded in server . i want to show an alternate image name notfound.jpg if the photo is not found

View 1 Replies

Fileupload Control Is Not Working At Other Location & Give Exception "file Could Not Found"

Aug 11, 2010

fileupload control doesnt allow to select multiple files, then what i did , i select a file of directory and by coding i got its directory path. and showing all files of that directory in checklistbox control.So now user can select multiple files and can send selected file. I know its not a proper way, but i am getting a control that can allow me to select multiple files, If you let me know about the control that will allow me to do that , then this is what my onlyOk come to my problem with fileupload control, it works fine when run locally. but at other location its giving me a exception of path is invalid and file not found and one more thing its looking for this location "Could not findfile 'c:windowssystem32inetsrv"

View 2 Replies

Copyrights 2005-15, All rights reserved