Web Forms :: How To Access A Webform Control From Another External Class / Namespace
Sep 24, 2010
Currently, I have many controls and objects such as Chart1 of mschart as part of the public partial class _Default : System.Web.UI.Page.
At the bottom, I've created a second class that is not part of the _Default webform class. How can I access the webform controls from this second class?
For example, I want to do
Chart1.Series["Series1"].Points.AddXY((pointIndex + 1) * 40, datapoints[pointIndex]);
I want to pass pointIndex integer and the datapoints array.
I know that Chart1 was created protected global access modifier in the designer.cs but when I changed it to public, it still had a problem.
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Sep 24, 2010
I was wondering if you should write code so that external classes and functions of that external class can access the webform controls in the main class???
Or should you only use the external class to process some data, return that data back to the main class (that instantiated that external class object) and then have an internal function in the main class to deliver the data to the control? (back to the screen)
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May 31, 2010
I have added global.asax file in my webservice project. in webservice project i have one class file name as 'Class1.vb' in this class contain some methods() , i want to access those methods from 'class1.vb' in global.asax.vb file. any body knows how to access those methods in global.asax.vb. file
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Jun 13, 2010
Why i can't access MasterPage's public property (MessagePlaceholder) from other Class (Errors) ?Error compiler gives me is "Error 1 The type or namespace name 'MyMasterPage' could not be found (are you missing a using directive or an assembly reference?)"my master page code behind
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class MyMasterPage : System.Web.UI.MasterPage
{
public string MessagePlaceholder
[code]...
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Dec 11, 2010
How can I access a webform control from a Web User Control?
I have a web form with some textboxes and dropdownlists. I created a Web User Control with other controls (other textboxes) inside it. Now I need to call from the web control source code the values that the controls in my web page have. How do I do it?
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Nov 17, 2010
am trying to get one of the webforms in my application to link to another website, outside of my application. I can get the page to load as a new webpage in my browser easily but I need to keep my masterpage in view.
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May 7, 2015
I have create the following code
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Text;
using System.Linq;
namespace ImageProperties
[Code] ....
But I did call it into my pages . I am using this but not find the ExifUtil class ?
ExifUtil.EXIFReader exif = new ExifUtil.EXIFReader(@"c:pathtoimage.jpg");
Console.WriteLine(exif[ExifUtil.PropertyTagId.EquipMake].ToString());
Console.WriteLine(exif[ExifUtil.PropertyTagId.EquipModel].ToString());
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Jan 18, 2010
i have a hidden textbox in my aspx page. The aspx page also has a masterpage in the <% @Page> directive.
<input type="hidden" runat="server" name="txtType" id="txtType" />
actually in aspx.cs i am getting txtType.ClientID="ctl00_MainHeaderContent_txtType"
I have a webpart in a webpart zone in this aspx page. In the webpart CreateChildcontrols() I need to access this hiddenTextbox value. I am able to access it as
string TxtValue = this.Page.Request.Form["ctl00_MainHeaderContent_txtType"];
But instead of hardcoding I want to access as a control in the page or form. How can I do that I want to do as looping through the controls in the page but Page.Controls.Count gives 1 and that is MasterPage. How can I get the entire controls in the page and loop through and find the hidden textbox. I also tried as string TxtValue = this.Page.Request.Form["<%=txtType.ClientID%>"] in CreateChildControls() of the webp[art. But could not access hidden textbox like this.
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Nov 4, 2010
I programmed a WebForm where I can add dinamic FileUpload elements and upload a variable number of files. So far no problem.
My problem begins when I try to automate this process in a class Uploader (external to this webform so it can be called from any other form or module). In my form's Page_Load() I instantiate this class and call the method uploader.layout(Me), which definition you can see next:
[Code]....
I get an error
El control 'FicheroUpload1' de tipo 'FileUpload' debe colocarse dentro de una etiqueta de formulario con runat=server. Which means something like The control 'FicheroUpload1' of type 'FileUpload' must be set inside a form label with runat=server.
Where is the error? Can I insert dinamic elements in a form from an external function, such as this class method?
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Mar 2, 2010
I am tasked with customizing a third-party web application. Since the application is updated (ie new files are copied over the existing files) several times a year, I was hoping that I could put my custom code in separate files -- sort of like having asecond code-behind file for each page that is modified.
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Feb 26, 2010
I am using a server control on a single web.forms page. I have to use this control on a web.forms page since its a server control, although this is actually a MVC project. So I created a web.forms folder and put my new page in it. I then copy the example code from the signature control. I get the following error:
The base class includes the field 'ctrlSign', but its type (WebSignatureCapture.SignatureControl) is not compatible with the type of control (ASP.signaturecapture_signaturecontrol_ctlsignature_ascx).
I know the code works because if I removed the ID attribute from the server control, it no longer gives me this error and my control renders. But I need the attribute for the ID so I can perform is post event
I am using this signature control. Here's the web.forms code...
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Index.aspx.cs" Inherits="KahunaCentralTIDRevamp.SignatureCapture.Index" %> [code]....
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Mar 15, 2011
recommend a data access class / helper class for Access databases, similar to the sqlhelper class found in the (Data Access Application Block)?
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Jan 26, 2011
I Have a Gridview in page.aspx. this gridview i want to pass as a parameter to the constructor of a class1.cs.Can anybody tel me, How can this be done?
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Oct 27, 2010
I'm not getting much help from the security group so I'm goign to post it here.Basically, I like to use Integrated Windows authentication so that I can authenticate all users who are at my company to access my web application in the browser. Each user resides on different domains and some are on the same.
So in order to authenticate them, the first thing I would do is to add them to my web root's security tab? I assume this is the virtual directory folder of which the web application (default.aspx, etc.) runs on the Windows 2003 web server? So I give each user a read security permission to access the folder? (which would mean that they can then access the web application?)
Is my understanding of this correct? Therefore, If i don't add users to the security tab of the virtual folder, then other users will be rejected by the browser?
Next, assuming I want them to log on as a Network Service user, and not impersonate any other user or impersonate as themselves such as LABob (domainuser) and instead just be NT AuthorityNetwork Service, I would set impersonation to false and I would also set anonymous access in IIS to false.I want to set up the fastest/easiest way to add users/remove users to access my application and be able to authenticate whether or not they can get on. Is this the right way to do it?
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Jan 19, 2011
i have a usercontrol named filebox (which wraps a fileupload and some related stuff) in a certain .net class i have need to use this type as a ctype but i cant seem to call ctype(aobject,filebox) or either ctype(aobject,Controls_filebox) (which is the correct name) how can i convert an object to this type?
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May 10, 2010
tell me the class hierarchy of System.IO namespace?It's not clear in MSDN library.
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Oct 30, 2010
In Tailspin Spyworks tutorial #5 Building Business Logic ttp://www.asp.net/web-forms/tutorials/tailspin-spyworks-part-5Here is the excerpt from the tutorial pg 38 of the full pdf
[Code]....
However....in the download the namespace is actually "namespace TailspinSpyworks" without the .Classes
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Apr 8, 2010
I want to access a usercontrol in my class file not in aspx.cs.i need to typecast it using ASP.usercontrol_ascx type but i cant access ASP namespace from my .cs file..how to typecast the usercontrol??
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Aug 26, 2010
I'm programatically looking ito a .aspx file and getting the file class name declared in its CodeBehind. For example, when analyzing myFile.aspx I read in its Page Directive and found its CodeBehind equals "myApplicationmyPage.aspx.vb". Then I use the code
below:
[Code]....
Now I want to read the BaseFile (class = myApplication.Forms.BasePage). However, to read in this file, I need I need to get its full path instead of its namespace.class hiearchy. In this case, the BasePage is wrapped in a different namespace declaration thus I cannot just change the '.' to '' in order to get the path.How can I get the path of BasePage so I can read it?
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Feb 1, 2010
i have the same prblmi have a class file in app_code/fol1/fol2/class1.vbbut when i call it as dim x as new class1 i am not getting itshld the class file be placed in app_code folder or outsideactually i had creatd the namespace but i am not able to import i
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I need to access post and get variables inside a server control class, there is no access to Request object in server control class...
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I have some code in a button_click event in my webform that performs some actions
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Sep 10, 2010
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May 24, 2010
I have a class UserControlBase that inherits System.Web.UI.UserControl and my user controls inherit UserControlBase class. UserControlBase has some common functions that are used in all user controls.
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What is the easiest way to send an asp.net form(s) with parameters to an external project (from the web site project) by pressing a "Submit" button?
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