Web Forms :: How To Create User Control And Use It In Project
Aug 16, 2010how to create user control in asp.net and use it my project?
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The attached code results in an "Object reference not set to an instance of an object" error, but I can't figure out why.
<%@ Master Language="VB" CodeFile="MySite.master.vb" Inherits="MySite" %>
<%@ Register src="Controls/Menu.ascx" tagname="Menu" tagprefix="my" %>
<html xmlns="http://www.w3.org/1999/xhtml">
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[code]...
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Default.aspx
<%@ Page Language="C#" MasterPageFile="~/MasterPages/TwoColumn.master" AutoEventWireup="true"
Inherits="ApplicationName.Web.Default" CodeBehind="Default.aspx.cs" %>
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CustomControl.ascx
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="CustomControl.ascx.cs"
Inherits="ApplicationName.Web.Controls.Custom.CustomControl" %>
<asp:PlaceHolder ID="ph1" runat="server></asp:PlaceHolder>
CustomControl.ascx.cs
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace ApplicationName.Web.Controls.Custom
{
public partial class CustomControl : System.Web.UI.UserControl
{
///My logic
}
}
Again it seems so easy. What am I missing? Or is this not possible?
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[code]...
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eg: Lets say on SelectInputs.aspx i select fields viz. Firstname(textbox), Lastname(textbox), DateOfBirth(3 dropdowns) etc and click on submit button then from code behind the .ascx file should be generated that will include Firstname(textbox), Lastname(textbox), DateOfBirth(3 dropdowns) etc.
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Aug 31, 2010I'm trying to create a user control class that extends Panel. Essentially, what I want to do is to have a panel that fires off an event whenever it's clicked upon.
So, I create something like this:
[Code]....
And then, in the ClickPanel.ascx.cs file:
[Code]....
I'm not exactly sure whether this would work as I haven't had the opportunity to test it yet.
The problem is that I can't have a class inherit from Panel. Creating a user control class requires that my class extend User Control - at least that's what the error messages have been saying up until now. The problem is that if I do extend it from the base class of UserControl then I lose all the functionality of the Panel itself and the entire thing is rendered pointless.
AJAX :: How To Get An Array Of All The Textbox Control Inside Create User Wizard Control
Aug 10, 2010How can I get all the textboxes inside a create user wizard control using getElementsByTagName().
Below is my JQuery code:
[Code]....
The above code isn't displaying hint text when the textbox retreives focus.
I think there is something wrong with this getElementsByTagName("asp:TextBox"); , I have also tried getElementsByTagName("TextBox"); , getElementsByTagName(":textbox"); and getElementsByTagName("input"); .
But no one of them gets the textboxes array.
Can anyone tell what will be the correct syntax for getting all the textboxes inside a create user wizard control using getElementsByTagName()?
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By any chance, do you also know how to prevent the creation of the user if the additional fields have not been filled?
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How To Create A User Control
Feb 11, 2010I know how to use ITemplate to create a user control where it looks something like this:
<cust:control id="" runat="server">
<template>
random content...
</template>
</cust:control>
however, i am wanting to make a menu like control, and need a more specific setup. i dont need a template section, however, i want to create something where the user control can have only certain elements (which are also user controls). the best way to describe this is by example i think. this is what i want to create for my user control template:
<cust:control id="" runat="server">
<cust:contolItem id="" runat="" blah="" blah="" />
<cust:contolItem id="" runat="" blah="" blah="" />
<cust:contolItem id="" runat="" blah="" blah="" />
</cust:control>
the outer control is a user control, and inside its tags it can have other user controls (limited to what is defined in the outer controls code). all of the 'children' in the outer control would then be rendered on the outer controls page markup as if it were templated.
Create A Login Box As A User Control?
May 16, 2010I'm starting out learning some ASP.Net programming and I'm going to be making a little community website for my friends and myself.
I was thinking of having a usercontrol and have that 'loginBox' shows the appropriate textboxes and login button, but also show his username when he is logged in.
Do you think I should handle this as a user control or am I missing something as an ASP.Net newbie?
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Jan 18, 2011I know you can can do this using MVC. But not sure if you can using Web Forms.
I have a button, when clicked it will get the data then populate a repater then injects the data to other controls. This works fine using postback, but it's a little slow and I want to do it using Ajax.
Is there a way to use JQuery to instantiate the repeater control or the user controls without using postback or using evil update panels?
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