What's The Best Method For Extending The Functionality Of A Standard Web Server Control
Nov 21, 2010
Currently my code resembles this:
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="CustomPanel.ascx.cs"
CodeFile="CustomPanel.ascx.cs" CodeFileBaseClass="System.Web.UI.WebControls.Panel"
Inherits="MyProject.CustomPanel" %>
...
namespace MyProject
{ public partial class CustomPanel : System.Web.UI.WebControls.Panel
{ ... }
}
However, I'm really not sure how to proceed from here, because this does not appear to follow a logical inheritance path that includes System.Web.UI.UserControl / Am I doing something wrong? How can I inherit Panel and extend standard event-handlers, such as PreInit?
View 2 Replies
Similar Messages:
Mar 24, 2011
I'm trying to extend GridView control following these steps:Create a namespace in an empty Visual Basic file: mycontrols.vb
[Code]....
Register it in the WebForm I want it to be
[Code]....
Create the control in my WebForm:
[Code]....
I get an error as tag prefix unknown, and in my code behind file, the control doesn't recognize the primitive GridView properties and methods.
View 3 Replies
Mar 30, 2011
I'm trying to extend de GridView control with a Custom Server Control, I'm doing ok with extended properties but when I get to methods that need to re-apply or modifiy the DataSource I don't get any data in the grid, though the SQLDataSource actually retrieve data. Here is my MyGridView.applyFilter() method, which should filter the data but actually shows an empty GridView, but as I sayed, the DataSource has data. I try to find (FindControl) theSQLDataSource of the GridView (Me) and modifiy its paramters, thenDataBind Me to apply the changes...
[Code]....
What am I doing wrong? why is the gridview empty?
View 1 Replies
Feb 23, 2011
I'm trying to extend the GridView into a custom/user control "WorklistGridView". And I'm not quite sure how to do it... so here's what I need:Every row needs to have a control (either a boundfield or a templatefield with a label, etc.) that contains the StepID (which is a column returned in the data set).I want to be able to use the WorklistGridView as a base class and extend it to something like "XyzWorklistGridView", where that child class would have a few more controls in the row template.
View 2 Replies
Nov 24, 2010
I've created loads of user controls, but this is my first time dealing with extending a server control. The problem I'm getting is that the base control's data is not being persisted across postbacks in a Master/Content page.I'm actually trying to get this working using a Telerik control (for my sins), but the same issue happens with a standard Web TextBox control. Code:
[Code]....
Now, I've copied the way I handle the control state as I do it with user controls (ControlState), and it isn't working. Can someone point me in the right direction please? All the examples I find refer to creating user controls, not extending existing controls. Specifically why nothing is being persisted on post back.
View 7 Replies
Mar 29, 2011
so I've got some HTML that's generated dynamically. Part of it
StringBuilder.Append("<input type="button" onclick="Email_Clicked" value="Email" class="button" runat="server" />");
I need this to call C# method Email_Clicked
How can I accomplish this without asp:button control?
View 5 Replies
Feb 4, 2011
Is there a standard method for calculating fixed width values for tables in HTML? Right now, I'm working on formatting tables on a web page to be a fixed width, I have a table that's within another table, when testing the page in IE I notice that the alignment of the colon is off as the second picture below illustrates. My intention is to make sure the colons are properly aligned as they are in Firefox and was just curious if the misalignment was due to the settings in the HTML or if it has more to do with how the browser renders the page.
Firefox:
Internet Explorer:
UPDATE: Sorry for not providing any reference code, here's a snippet of the particular section I'm working with.
<div style="width: 1600px; text-align: center; position: absolute; top: 10%; left: 0%;">
<span id="labelInstructions" style="font-size: xx-large;">PAGE TITLE <br><br></span>
<table style="width: 1000px;" align="Center" border="0">
<tbody>
<tr>
<td style="width: 1000px;"><label for="FileUpload1" style="font-size: x-large;">ENTER: </label><input name="FileUpload1" id="FileUpload1" size="70%" type="file"></td>
</tr>
<tr>
<td style="width: 1000px;"><span id="fileUploadError" style="color: Red; font-size: medium;"><br><br></span></td>
</tr>
<tr>
<td style="width: 1000px;">
<table style="width: 1260px;" border="0">
<tbody>
<tr>
<td style="font-size: x-large; width: 800px;" align="right" valign="top">FILE INSTRUCTIONS:</td>
<td style="font-size: x-large; width: 1800px;" align="left" valign="top">INSTRUCTION 1<br>INSTRUCTION 2<br></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td style="font-size: x-large; width: 800px;" align="right" valign="top">FILE EXAMPLE:</td>
<td style="font-size: x-large; width: 1800px;" align="left" valign="top">EXAMPLE 1<br>EXAMPLE 2<br><br></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</div>
I know it's ugly, just a note, this is an ASP.Net generated webpage and I'm setting the attributes of the HTML elements pro-grammatically from the code behind. I sorta inherited this and my employer wants to keep major changes to a minimum. UPDATE 2: When I adjust the inner table width I can get it to align in IE when set to 1377px. For Firefox, the sweet spot for alignment is 1260px.
View 4 Replies
Oct 4, 2010
is it posible to add client side functionality to a custom server control in vb.net?i am looking at msdn library and there is no code for vb :/ http://msdn.microsoft.com/en-us/library/aa719700%28v=VS.71%29.aspxI fount this on MSDN Library Adding Client Capabilities to a Web Server ControlWhat i'm trying to do is to add some client functionality to my control, so that you can get or set some properties/values on client side. From the above link i see that this is doable with Ajax Server Control, but i don't have it, i have Custom Server Control. Can i do this with Custom Server Control and how?
View 16 Replies
Dec 11, 2010
I want to get my user list provided by ASP.net membership provider with the GetAllUsers method.
This method has the paging support but I did not see any sorting support. Which means that this will sort the rows with default columns. But I want to customize it and sort the rows by my define column.
In addition, as I have already mentioned that I will implement paging and sorting both features so I want to implement the sorting feature at database end so that only filtered rows are fetched by application.
View 1 Replies
Feb 11, 2010
I have a contract budget management program where hours to be worked (within various contracts' period-of-performance) are computed. These projected hours are displayedto the employee in a gridview on their timesheet (web program) to be used as a guide for charging hours worked. A new FIO bought well-known accounting software with it's own timesheet function but without the budget function. I'm trying to figure out the best way to present the projected hours on the same web page as the 3rd party timesheet (I don't have control of the latter; it's just a URL). In ASP days I would have built an I-frame. Evidently an earlier version of .Net had <frameset> function but that is obsolete. What is the best way to accomplish my goal?
View 2 Replies
Aug 15, 2010
When people talk about extending a control are they just talking about inheritance?
View 1 Replies
Apr 18, 2010
I have a rather large application that has literally a hundred DDLs with Yes / No ListItems. In an attempt to save myself some time, I created a custom control that extends the standard DDL.It all seems to work fine but I am having some issues when assigning the SelectedValue property in code where the selected value does not seem to have an affect on the control. I wonder if I should be adding my items during Init or PagePreLoad? Should I be calling base.OnInit before or after I add the list items? This mostly works but not 100%. (v3.5)
public class YesNoDropDownList : DropDownList
{
protected override void OnLoad(EventArgs e)
[code]...
View 1 Replies
Mar 15, 2010
What would be the best way to extend the EntityDataSource control? I have a site that implements Entity Framework and I current create my model container and add it to the HTTPCurrent context. When I create EntityDataSource controls on the page I have to go into the code behind and set the OnContextCreating to add MY context to the EntityDataSource instead of the one that EntityDataSource creates. This is because in my model I have extended the Partial Classes to support Validation and custom Save/Delete methods.I would ideally like to create a custom control that I can drop onto a page that has its context already set to the context that I created.
View 1 Replies
Jul 30, 2010
i desgin web site with sqlexpress 2008 now i want to convert it to sql standard enterprise i can or not? if it posible how i can convert my database from sqlexpress limit to sql server standard unlimit
View 4 Replies
Jan 13, 2010
I have created my database in SQL Server 2005 Enterprise Edition and now planning to tranfer this databse to another server, But this other server is SQL Server Standard Edition, So if i try to attach my database which is created in Enterprise Edition will get sucesully connected to Standard Version ? or i will get any error message or i am doing something wrong ? This situation is fine or Version should be kept same ?
View 2 Replies
Apr 26, 2010
I have SQL Server Standard 2008 installed on my machine, alongside Visual Studio 2008.
My current hosting provider (not a huge fan) requires me to access my db's remotely via SQL Server Management Utility. To date, I've been doing it by connecting remotely in VS2008. Their troubleshooting documentation/steps, though, are for the SQL Server Management Express 2008, and i'm having a lot of connectivity issues with them.
I followed the steps here: [URL] to "add additional features to an existing installation" - but when I did so, the setup wizard indicated that the Management Tools-Basic were already installed.
View 1 Replies
Jan 13, 2011
Are there any ways in ASP.net to fetch data from the server without extending the session timeout? This needs to be done every few minutes without user interaction until the page is closed.
Additional context, as requested:
The pages in my webapp needs to poll the server every few minutes to check for a particular condition (emergency maintenance scheduled for 30 minutes time, in this instance). When the condition is true, the page will display a message to the user. When the condition is false, nothing needs to happen.
As I understand it, postbacks to the server reset the time until the session expires. We do not want the session to be extended/refreshed/reset/whatever the word is every time the page polls the server. I need a way to poll the server automatically without resetting the session timeout.
View 3 Replies
Mar 1, 2010
I an expanding on the HotGridView control (http://msdn.microsoft.com/en-us/magazine/cc163612.aspx). During testing I noticed the "AutoGenerateCheckBoxColumn" behavior was returning true even if the user did not specify the a value in the markup but I expect it to return False if not value is supplied by the user - can anyone shed some light on why the AutoGenerateCheckBoxColumn is always true if not explicitly set to False in the markup?
[Code]....
View 1 Replies
Dec 16, 2010
This is my first "request for help" post - I've spent the past few weeks helping others, so I'm hoping someone can shed some light here.I've dealt with server controls before, so it's not new to me, but it was some time ago and I'm a bit rusty. I have an inherited calendar control, that works fine:
[Code]....
I've overriden the Render method, hoping to be able to modify the HTML output of the control - I want to hide the back arrow if the Month & Year in MinDate is reached in the calendar, and the same goes for MaxDate and the forward arrow.On top of this, I want to be able to display icons in the day cells, under certain data-bound conditions. Once I've figured one out, I'm sure I'll be able to work the other one out.Are there any other methods, events or properties more suitable for this? Are there any other controls that do what I'm looking for that I've maybe overlooked?I'm using C#.Net 4.0 Webforms - it's a very small app, so I've not used MVC etc... just a few LINQ queries to the database.
View 2 Replies
Jul 19, 2010
I have a Solution in which i m using Gridview which stores image inside it. Every time when user uploads images and clicked on button, image get inserted into Gridview.
But every time user hits on button page get postback,so to avoid this i used web method which is get called when user hits on button (html button). But when i m trying to bind gridview in this method.It is not get accessed .
how i access this gridview inside web method? Why Web methods are always static?Is there any other way to do this?
View 2 Replies
May 17, 2010
I am creating custom server control. I have two classes in project. One is main class that render control and another will be used to render content based on condition.I just want to know how to render content from other classes in main class.For example. This isjust an example.My main class code
[Code]....
My TopLeftPane class
[Code]....
My page code on page load event
[Code]....
When I run the page, Header title always getting null. This is a just sample code. I will have more than 20 classes so I dont want to write a code in main class to render whole control.I hope all of you understand my problem.
View 3 Replies
Dec 14, 2010
I have an Asp.Net TextBox control whose enabled property I need to evaluate using a separate (from the code-behind of the containing page) class. The way I want to do this is:
<asp:TextBox ID="myTB" runat="server" Enabled="<% ToggleControl(this, "someBusinessValue") %>" ... />
The reason I need to pass a reference to the calling control is to see if there are other properties I may need to consider before disabling it. The 'this' keyword, however, refers to the page as a whole. And since my TextBox can be within a FormView, or GridView, I can't easily just get the control byexamining 'page.myTB'. I don't want to have to start ploughing through GridViews on the receiving class file just to retrieve a reference to the TextBox.Does anyone know how to refer to the control inline in this way?EDIT 1: This will need to be done to several different types of server control, such as ListBox, CheckBox, RadioButtonList, etc.EDIT 2: The best I've come up with so far is:
<asp:TextBox ID="myTB" runat="server" Enabled="<% ToggleControl(myGridView.FindControl("myTB") as WebControl, "someBusinessValue") %>"
View 3 Replies
Dec 30, 2010
I am having a dropdown server control on view, when the user clicks the submit btn at that time the form gets posted. and a action method in view controller is called with verb=post.
But the problem is that how should i get reference to the dropdown server control in the action method of view controller?
View 1 Replies
Mar 8, 2010
I have visual studio 2005 and sql server standard edition installed on my desktop. Im trying to get my head around the authentication and role administration part of visual studio controls.
At the moment Im using the browser version to configure the settings.
While im attempting to access the security tab to develope, users and roles i keep getting a message saying im unable to connect to the database. However, when i use my collogues PC with SQL server express installed it connects with no problems.
Does anyone have an idea how i configure this tool to use SQL server standard edition so i dont have to go back to express?
View 9 Replies
Jul 8, 2010
In my application, every time the active tabpage changes, I connect to a database, fill a datatable, and bind it to my data control. That's all the functionality.
The main reason I don't want to use the ajax tabcontrol is because of the way it's rendered on the browser. Assuming that
tabcontrol.autopostback is true, the user clicks on another tabpage and he will see the tab change, and for a fraction of a second he'll
see the data previously displayed in that tab. Then the page will do postback and the data in that tabpage will be refreshed. It just seems awkward. I also want it to work even if javascript is disabled.
I also tried using the multiview control, but it doesn't work without javascript.I simply want a "tabcontrol" similar to the one used on ebay.com. Once you do a search, you'll see three tabs: "All items", "Auctions only", and "Buy It Now Only". I can have everything disabled (active scripting, Flash, etc) and they still work.
View 3 Replies
