My scenario require's me to create a control from a string that contains the controls name, for example
string a = "TextBox";
using the above string a i need to create the control.Iam using Visual Studio 2008 Pro ASP.Net 3.5
i want to create a control at runtime and i have the control type(mean class Name) in a string varriable..likei have the string varriable named controltype="Textbox" or controltype="Button" or controltype="Dropdown" now i want to create this control at run time how can i create this type of control .
View 3 Replies[code]....
This code DOES Create the Text "TOTO" but does not create image "Targetvignette"the code works ok with BUTTON object as opposed to Image.I have manually created a image with the toolbox using exactly the same credential, this displays OK.it does not catch any exception it just doesnt display anything on the webpage.I can create all sorts of control but not image [Image button] is not that better as it seams to be create but I got no image just "SUBMIT QUERY" textI am confused and stock I have tried i think every single property of the image object i could find.
I want to know how can we create web user control dynamically.
Scenario: Basically i am developing registration user control. I have a web page(say, SelectInputs.aspx) that lists different types of fields along with checkbox attached to each of them for selection. Once i select desired input controls (which should appear in user control) and click submit button then the file (.ascx) should be created from code behind.
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.
I tried to create controls in side MultiView dynamically. The testing code is attached. My question is why the dynamic control is not shown in view2 and it disapears from view1 when <Previouse> button is clicked, even though enableviewstate is set to true?
If the dynamic control is created outside IsPostBack, they are always there. But should we do it this way?
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Test._Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
[Code]....
I am currently trying to find a way to convert a string into an asp.net server control.I am storing the asp.net code of Custom Web User Controls in a database and I'm hoping to retrieve this code, convert it to a control and then render the control to the page.The code stored in the database will be asp.net code, not html code. i.e. <asp:Label ID='lbl' runat='server' />
View 3 Repliesi want to create a few textbox dynamically in place holder but when i created and click on btn and use findcontrol to retrive input data that created dynamically storing data in db , i will receive an error like this :
Object reference not set to an instance of an object
I create my aspx page dynamically, with adding controls to a placeholder.
But this way the ajax cascadingdropdown won't work.
I have a custom DDL that lives in my Server control library. Currently I add this control to a table by strongly typing the name of the control, the customary way.
Control_Library.Report_NumberDDL newDDL = new Control_Library.Report_NumberDDL();
What I want to be able to do is dynamically create that control by pulling the control name from a table. So I would have the name of the control in my code, in this case "Report_NumberDDL", and I would like to then create the control without having to strongly type it.
Something like this, though I know this doesn't work:
string controlName = "Report_NumberDDL";
Control_Library."controlName" controlNum1 = new Control_Library."controlName"();
Edit:I tried to do this:
Type type = Type.GetType("Control_Library.Report_NumberDDL");
object control = Activator.CreateInstance(type);
But on the CreateInstance(type) I get a null value exception. So the Type isn't getting created correctly.
How to create a Tabpanel (AJAX) add in code behind using vb.net ...
View 1 RepliesI need to create a DataList from code behind.
The structure of that DataList shold be as follows:
<asp:DataList ID="DataList1" runat="server" RepeatDirection="Horizontal" RepeatColumns="5" CellPadding="6">
<ItemTemplate>
<table> <tr><td>
<asp:Label ID="lblName" runat="server" ForeColor="Red" Text='<%#Eval("ID") %>'></asp:Label>
</td></tr> </table>
</ItemTemplate>
</asp:DataList>
i had create a webpage by asp.net to show article that placed in Database . the article text contain link of other webpage i had written this link by hyperlink tag in the database like some forum when post new article.
this my text in DB (you can visit us by <asp:HyperLink ID="go" runat="server" NavigateUrl="~/WebForm1.aspx" Text="GO">CLICKING ME</asp:HyperLink>)
i want to know how can i let asp.net dynamically create heyperlink control on the page according to number of hyperlink tag in the text if (1-one hyperlink,2- two hyperlink,... so on)
i have a gridview control i added checkbox contrl dynamically but i am not getiing the reference of checkbox in button clilck event here is my code Gridvew
[Code]....
.vb code
[Code]....
in my asp.net+vb+access web i am having a page in which i am counting and displying the numbers in text boxes/labels. it works fine.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim connectString As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=C:webWing.mdb"
Dim con As OleDbConnection = New OleDbConnection(connectString)
[Code].....
i want to amend the value with the value of the text boxes that i had tried manually it works fine.
How to create Grid view control inside Repeater control.
View 7 RepliesI was working with treeview and bumped into this problem where i need to add child nodes to a treeview control,these child nodes are a combination of textbox and button control so that
i should be able to save the text as new child control,i tried overiding the pre render and post render text but didn't get the solution.
What I'm trying to do is take an instance of a control, and figure out what the markup would look like based on the property values set in the code behind. We've built a web-based web form designer. At the end of the design process we save the markup. For simple controls with supported types, generating the markup was easy. For complex controls with nested properties or unsupported types, we're faced with creating a custom markup generator for each custom control. I was hoping to find info out there that would jump start this development effort.
In simple terms, I have this:
Dim Ctl as Control = CType(Asm.CreateInstance("MyNameSpace.MyControl"), Control)
Ctl.Name = "Name of my control"
And I want to end up with this:
<cc1:MyControl ID="MyControl1" runat="server" Name="Name of my control" />
How 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()?
I want to put a Login Control and a Create User Control on the same page.. just wondering, before I start am I going to run into any problems by doing this?
View 2 RepliesI need to create a reusable custom control,which is like a form containing a listbox and some fields.The fields can be either textbox or combobox as needed for different applications,which can be selected on the property of the form onwhich page that i am using it,also i needed to specify the number of fields in that property.And also need place 3 buttons below for edit and delete the selected item in the listbox and a button to save.Data will be binded from the database as needed for different applications.
tell me with code how to create it using asp.net server control in C#.
I need to create a user control. This control is so simple. It consists of a "Label" control and a "Textbox" control. The purpose of this control is just to be dropped onto a web page and have a user enter a single value into the textbox portion. This is the only code I have in the code-behind page of the control.
Public MustInherit Class AlbumName
Inherits System.Web.UI.UserControl
Private _text As String
Public Property Text() As String
Get
Return _text
End Get
Set(ByVal value As String)
_text = value
End Set
End Property
End Class
I would like to put a recognized event such as a KeyPress event in this control so that I can validate the users input.
I am realizing a table with multiple rows for a Sharepoint webpart.
In this project, I would like to have a new html control which contain a LinkHtml in one column and another label in another column.
Essentially this html control would be a row used for my html table.
At the moment i am doing a row like this in the main class :
[Code]....
how to add dynamically control to a table
View 3 RepliesI have one label and table control in my webusercontrol.In my web form i want to add my webusercontrol dynamically and also i want to update value of label and table in my webusercontrol. I have tried using LoadControl method. The problem I am facing is that in my webform I am able to see webusercontrol but I am not able to update values.
View 8 RepliesI'm attempting to create a simple menu user control just as outlined here.
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">
<head runat="server">......