Custom Server Controls :: Using A GenericHandler As A WebResource Inside A Class Library?
Aug 16, 2010
I hope this is the right place to ask this question. I'm trying to make a control class library. I want to have a GenericHandler as a WebResource so I could call it from the web project that will use that control.
I need this handler will get parameters from the query string and return JSON data acourding to what it get in the QS.
I know how to create JS and images WebResources, so I tried the same on a generic handler I added to the class library project but all it does is return the source of the handler file and not the result.
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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
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Mar 15, 2011
I am rendering custom control. I rendered the css file on the prerender. When i rendered more than one control in the aspx page, the css will loaded the number of times the controls in the page. I want to load the css file only one time. How to check the webresource css file on rendering whether it is loaded or not.
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Jan 25, 2011
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Feb 24, 2010
Can anyone tell me how to show alert message inside the .cs file of class library project in c#? I am calling a method of cs file in classlibrary project. Whenever the control comes to the alert message statement inside the method, alert message should be shown on the web page(aspx) and the next statement to the alert message statement should not be executed.
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Feb 3, 2010
I have Web Service in Asp.Net Application, i create a break point in Web service. In the web service i create a instance for custom class library and call a method inside the Class library. When i run the Application i can able to debug the Web service that i create the break point, but i want to debug that custom class library code also how to deug this.
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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.
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Jan 28, 2011
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Jan 5, 2010
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Apr 4, 2010
I have a custom server control inheriting from CompositeControl. It consists of two RadioButtonlist controls that are rendered side by side in an html table. The number of ListItems in each RadioButtonList is not known until runtime. Depending on how many items each list contains, the RepeatColumns property of each list is set differently. To do this in the handler for the ItemDataBound event I need to get the count of ListItems in each RadioButtonList. How do I expose the Items.Count property of each internal RadioButtonList as a top-level property? I tried using a getter to return the count but this generates a compile-time error to the effect that the count cannot be assigned to--even though I have not created a setter.
Similarly, in the handler for the Submit event, I need to get the ClientID of each internal RadioButtonList to pass to a method that checks for data changes. How do I expose the ClientID of each component RadioButtonList as a top-level property?
I can of course index the Controls collection of the composite control to access the child control and read its properties--but that defeats the whole point of making a complex, independent custom server control.
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Aug 12, 2010
I want to use an image inside a Custom Web server control! Do I need to use Web.resources ? if so , how to do ?
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Dec 1, 2010
I am writing a custom control by inheriting "Control".
I wany the custom control to have multiple control nested inside it i.e. my custom control can have other controls in it.
How can I do it, would I have to implement any interface or what.
At the end, I want the code to look something like this.
[Code].....
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Mar 18, 2011
Is it possible to consume a wcf survive from a class library and use class library in SQL Server 2005?
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Sep 30, 2010
I have a server control which consists of a gridview with custom navigation&information capabilities and with javascript functions to highlight the selected grid items or highlight when mouse over event occurs.. (full tested outside asp:wizard)I'm trying to use that server control inside a template wizard step, when I drop such server control in the first step of the wizard everything goes ok.
When I insert even a blank step previous to the step which contains the server control, the javasript code of the server control is not rendered at all, the page doesn't fail during load but until I go with mouse over an item of the grid for instance.When I check the rendered HTML I can see no HTML, nor javascript events of this server control where rendered, neither the implementation nor calls to javascript, but even rarer what is there visible in the grid for ie, even the other components of the server control, are not in the "view source code" content. I seems it was sent to the client, even showed, but truncated in some phase..
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Sep 16, 2010
how to implement requiredfieldvalidtor. Server control which i have created does not work on client side. No javascript is been rendered and onSubmit the page.isvalid returns true.
[Code]....
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Dec 24, 2010
here's a situation and I would appreciate your response.
I have programmatically created the Wizard control:
Page_Load(obj s, evargs e)
{
Wizard ClaimDetailWizard = new Wizard();
foreach(int item in selectedItems)
{
//create new step
//added custom control to new step
//add step to wizard
}
//added wizard to a placeholder on a page
}
Based on List I get from Session i added new steps to my wizard To each step I had added a custom control
Each custom control in tern contains another custom Gridview Control in it.
So here's the problem when the page loads for example for two steps. All is good Wizard does what it's supposed to do.
But when I try to use sorting or paging in that custom Gridview. Somehow it displays the gridview I should see in the next step of the wizard.
Also what I'm noticing through debugging. Is that when I press next in the wizard I go back to the original page where I do all of the code specified above, and it recreates the wizzard. But it goes to the next step. Is this the way wizard supposed to work? Just doesn't seem very efficient.
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Sep 8, 2010
I emebeded jquery library in custom server control. but it's not working. it throws "object expected error". the complete code listing is given below.
jquery-1.4.1.js is rename it to jquery.js
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;.........
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Apr 6, 2010
I have some problem in app_code. I created one class name as class1 in side app_code.... Now I have a grid view with lots of textboxes inside it(itemtemplete). I call class1 to fill the all the values in my database with get set properties..... it working awesome on local. but problem is that after published it is not working.... I mean class1 is not called after publishing.... And app_code folder also not appearing at published folder.
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Sep 16, 2010
I have this Control directive in a usercontrol (i've changed the namespace and class name):
<%@ Control Language="C#" AutoEventWireup="true" Inherits="Namespace.Path.To.ClassName" %>
<asp:TextBox runat="server" ID="txtComment" TextMode="MultiLine" ValidationGroup="comment" />
ClassName is a class that lives in a class library and this is the class:
namespace Namespace.Path.To
{
public class ClassName : System.Web.UI.UserControl
{
protected System.Web.UI.WebControls.TextBox txtComment;
protected void Page_Load(object sender, EventArgs e)
{
HttpContext.Current.Response.Write(txtComment == null);
HttpContext.Current.Response.End();
}
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Jun 18, 2010
I have a user control SearchCriteriaCtrlr.ascx(see below).In this user control, I have a javascript code for filtering listbox values.I am firing this javascript for
<asp:TextBox ID="txtSearch" runat="server" onkeyup="FilterItems(this.value)"></asp:TextBox>
Problem:The problem is, my filter javascript is not working
SearchCriteriaCtrlr.ascx
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="SearchCriteriaCtrlr.ascx.cs"
Inherits="TimecardAdmin.SearchCriteriaCtrlr" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>
<link href="Styles/Site.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
//variables for holding different values
var ddlText, ddlValue, ddl, lblMesg;
function CacheItems()
{
//Array for holding Text
ddlText = new Array();
//Array for holding Value
ddlValue = new Array();
//Listbox value
ddl = document.getElementById("<%=lstSource.ClientID %>");
//Looping through all values of listbox
for (var i = 0; i < ddl.options.length; i++)
{
ddlText[ddlText.length] = ddl.options[i].text;
ddlValue[ddlValue.length] = ddl.options[i].value;
}
}
window.onload = CacheItems;
//function for filtering items
function FilterItems(value)
{
ddl.options.length = 0;.....................
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Nov 27, 2010
I have created a custom control that implements Templates (based on Panel controls) ... I can do a FindControl to locate imbedded controls. This allows me to get and set values in the imbedded controls, but I want to be able to reference the imbedded controls like they are properties of the associated panel. Here is a sample of how my custom control now works:
<cc:CustomControl ID="myCustomControl" runat="server">
<PanelTemplate>
<asp:TextBox ID="myTextBox" runat="server"></asp:TextBox>
</PanelTemplate>
</cc:CustomControl>
I can do the following (where my custom control has given the panel hosting the template the name "myPanel"):
Dim txt As TextBox = myCustomControl.myPanel.FindControl("myTextBox")
txt.Text = "Some text to put in TextBox"
What I want to do is:
myCustomControl.myPanel.myTextBox.Text = "Some text to put in TextBox"
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Jan 11, 2011
I am writing a custom control and implementing ITemplate in it. The code that I am using can be reviewed at the following link: http://msdn.microsoft.com/en-us/library/ms178657.aspx
Under the Template field, I would only like to allow controls of specific type only, say LinkButton and TextBox. If any control(s) present inside Template is anything except LinkButton or TextBox, an error should be thrown. I am wondering how can I check it programmatically inside custom control. The problem is that there is no collection available that lists all the controls that of Template (or may be I am not aware of it.)
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Nov 11, 2010
I am creatin a server control where some controls are being rendered inside `protected override void Render(HtmlTextWriter writer)`
writer.AddAttribute(HtmlTextWriterAttribute.Type, "button");
writer.AddAttribute(HtmlTextWriterAttribute.Id, this.UniqueID + "butto_Foo1");
writer.AddAttribute(HtmlTextWriterAttribute.Value, "Button1");
writer.RenderBeginTag(HtmlTextWriterTag.Input);
writer.RenderEndTag(); //button
writer.AddAttribute(HtmlTextWriterAttribute.Type, "button");
writer.AddAttribute(HtmlTextWriterAttribute.Id, this.UniqueID + "butto_Foo2");
writer.AddAttribute(HtmlTextWriterAttribute.Value, "Button2");
writer.RenderBeginTag(HtmlTextWriterTag.Input);
writer.RenderEndTag(); //button
This way buttons are rendered on design view as well. The problem is that number of buttons to render is dynamic based on data in xml file (even if the data was static, the number of button is about 12 and I don't think it is wise to copy paste the same code above 6 times...). I thought by using loop for that:
int i = 1;
foreach (Button button in tb.Items)
{
writer.AddAttribute(HtmlTextWriterAttribute.Type, "button");
writer.AddAttribute(HtmlTextWriterAttribute.Id, this.UniqueID + "butto_Foo" + i);
writer.AddAttribute(HtmlTextWriterAttribute.Value, button.ButtonValue);
writer.RenderBeginTag(HtmlTextWriterTag.Input);
writer.RenderEndTag(); //button
i++;
}
tb is defined in OnLoad; On run time it works, but on design time I get error: > Error rendering control. And control is not being rendered.
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Jun 17, 2010
Is there a class library reference for the AJAX toolkit controls. I would like to see all of the properties and methods of the Accordian control.
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Mar 16, 2011
I might be asking a dumb question, but I have a client for whom I need to build many websites (10+) (asp.net 3.5) which will all the pages on each site will have the same codebehind, but the sites will launching in different regions and whilst following the same template, will have different content.I have built and launched site 1, and sites 2, 3 & 4 is nearly live, but it occurs to me that as all the sites are basically the same, the code is going to get more complicated to update as it will be duplicated, so if I need to do a bug fix on one site, I'll need to do the fix on all websites (and this is going to get complicated.)
I was wondering if it possible to somehow create a class library of all the current aspx.cs files, reference this dll in each website and then inherit these classes into the .aspx.cs files. So default.aspx in each site would still have a CodeFile of "Default.aspx.cs", but Default.aspx.cs would inherit the corresponing class from the dll:
using WebPagesClass;
public partial class _Default : WebPagesClass._Default
{ }
The reason for doing it like this is that if I need to change any code on a specific website (for minor changes in languages for instance), I can override the page functions and change the parts required. For all other pages which have not cha, I can just copy from a single website.Is this vaguely possible? If not anyone one got any killer suggestions of how to manage so many websites from a single codebase?
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