Web Forms :: How To Access A User Control From .vb Code Behind File

May 14, 2010

I'm trying to access a user control from my .vb code behind file. I am actually trying to access a button on that user control page.

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How To Access A User Control's Parent Form's Controls Inside The User Control's Code Behind

Jun 11, 2010

I have to access the parent form's controls inside an event handler method on my user control's code behind.

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Web Forms :: Can't Access All Of User Control Types In Code

Jun 27, 2010

I have an asp.net 3.5 WebSite application where I have a bunch of UserControls.

In some scenarios I have a reference of type Control (System.Web.UI.Control) that I need to cast to a specific User Control type (to access public properties and methods of the User Control).

The User Control classes are all declared in "the global scope", i.e. not within a namespace. However, for some reason, only some of my User Controls is possible to type in a code file and show up in intellisense and some just wont. In one scenario I could write the cast in code anyway and the site would build (but the UserControl type name did not shift in to the ordinary class name color (light green, you know) in VS text editor), but when running the page I still get the error message about missing using directive or a reference...

If I use the VS 2010 "Navigate to" feature (Ctrl+,) and search for a type I usually get one hit for the Type/Class name and another for the actual file. When searching on my User Control class names I only get the file hits, no class representation. This even goes for those User Control types I actually can access in code.

I've tried to compare the User Control classes that work and doesn't work, but I can't find any difference, they are all declared as public partial.

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C# - User Control Access From Code Behind

Dec 22, 2010

I have a user control called adminMenu and I use it in my index.aspx and all is fine, but I need to access a MenuItem in adminMenu and need to change NavigateUrl on the MenuItem. Tried this code with no luck:

MenuItem MaintenanceReports = this.adminMenu.FindItem("MaintenanceReports");

Not sure if I should be accessing adminMenu properties from controls code behind, but when I try from controls code behind was not able to access it either.

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Web Forms :: How To Expose User Control Custom Property At Its Code Behind File

Mar 10, 2010

I created a simple gridview user control with a custom property ProfileType which should load different records depending on the ProfileType value when attaching to a web page.

This is my web page:

[code]....

how I can expose user control custom property at its code-behind file.

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Way To Access User Control In Class File

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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C# - Extend Control (ASCX) And Access Base Markup File From Subclass Code?

Jan 29, 2010

I'm building form validation controls for our C# ASP application. The bulk of the work is handled by a BaseValidator control (subclassing System.Web.UI.UserControl), which also has the markup for the validation output. This is then extended by subcontrols like PasswordValidator, that provides the Validate method and any extra fields needed by that validator control.

(The end goal is to have controls like <uc1:PasswordValidator ControlId="txtPassword" /> which we can plop into any form with minimum duplication.)

However, PasswordValidator.ascx.cs cannot access the form elements defined in BaseValidator.ascx; the only way I've found to do so is to duplicate the markup in each subcontrol's *.ascx file. How can I extend BaseValidator.ascx.cs and access BaseValidator.ascx's markup in the subclass?

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Get Code - Behind File To Recognize Type Of A User Control?

Jan 18, 2011

I have a custom control in my mater page that represents a menu, let's call it CustomMenu. The control code files are located in a non special directory. I want to give each page that uses that master page the ability to access the control and, using a public property, tell the control whether or not it should render itself. I have a public property on the control to do that, and I know I can get the control by referencing Page.Master.FindControl('IdOfControlIwant');

The problem I'm having is that I can't seem to get the control Type recognized by the compiler, so when I do find the menu control, I can't actually work with it. The only way I can get the code behind to recognize the type is to register it in the ascx file, and then add at least one control to the page, which is undesirable.

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Update A Web User Control Code (ascx.cs) File Without Compile The Entire Site?

Apr 2, 2011

I'm using vs2010, asp.net 4 webform.Is there anyway which i can update a code behind file (ascx.cs) file without compile the whole site.because i just want to debug some ascx.cs file, and compile a big whole site will cost 1 minutes at least.

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Web Forms :: Access User Control Properties In Another User Control

Nov 9, 2010

I want to use a couple of instances of the same control on a page. The user control is intended to display a list of records in a repeater. The aim is that the second control will show a list excluding the IDs in the first control The control has a number of public properties, including IDsInThisList, and IDstoExclude. The query will exclude the IDs in the second property.

What I would like to do is get the record IDs from the first instance of the control (IDsInThisList), and pass them to the second contro as the IDsToExclude.

I have a test page where I am setting the properties of the controls in code. As you might guess, it's not working! The first control displays the top 3 items, as desired, but the second display the records 1-7, rather than records 4-10 because it is not receiving the IDstoExclude from the first control When I response write the IDstoExclude from the first control in my testpage, the string is empty. (if I do it from within the control, it shows the IDs)

How can I get the controls to fire in order and pass values to each other?

Screen grab of test page + uc and test page code attached

[Code]....

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Web Forms :: Access One User Control Methods In Another User Control?

Jul 28, 2010

I have a requirement where i need to access the methods of one user control in another user control.

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Web Forms :: How To Access A Control In The Code Behind Even Though The Control Is Not A Server Control

Jun 3, 2010

I have several checkbox controls on my web form that are not server controls (runat="server") How can I access these controls form my C# code? Can this be done with document.GetelementById from the server side using C#? Or some other technique?

I am not allowed to make these server controls (runat=server) because of a requirement.

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Web Forms :: User Controls Are Null When Referenced Inside The Code Behind For The User Control?

Sep 1, 2010

I have an ASP.NET 4.0 application with some simple user controls. The user controls work fine on the design surface (VS.NET 2010), but when they're loaded during application execution, nothing shows up.

Futhermore, the various child controls of the user controls are null when referenced inside the code behind for the user control.

The code behind for the user control executes as expected, but any reference to child controls are null.

It's like ASP.NET is never parsing the ASCX to create the instances of the child controls.

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Access :: Write In (mdb) File. Adox Vb Code For Save Textboxs Data In Mdb File?

Dec 21, 2010

there are an access file . >> "test_file.mdb"

there are a table in mdb file .>> "test_table1"

and there are 2 columns in "test_table1" >> "name" and "age"

and i have 2 textbox in my web form . >> "textbox_name" and "textbox_age"

and i have a button for save textbox_name.text and textbox_age.text in mdb file .

i need adox vb code for save textboxs data in mdb file .

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Web Forms :: Declare Url In Web.config File And Give Them A Name And Access From Vb.net Code Behind?

Mar 1, 2011

I have a project that has 4 pages and from each page have several link buttons to go each of the other pages. I would like to declare these url in the web.config file and give them a name and access from vb.net code behind.

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Web Forms :: Cannot Access Control Id From Code Behind (c#)

Feb 18, 2010

I have a .aspx page that inherits from a class (Hmp.Web.Lib.HmpWebPage which actually inherits System.Web.UI.Page) . The code behind for my page starts like this.

public
partial
class
FnmMessagesEdit : Hmp.Web.Lib.HmpWebPage

and the markup is

<%
@
Page
Title=""
Language="C#"
MasterPageFile="~/MasterPages/HampMaster.master"
MaintainScrollPositionOnPostback="true"
AutoEventWireup="true"
CodeBehind="FnmMessagesEdit.aspx.cs"
Inherits="HMP.Web.features.FnmMessagesEdit" %>

My problem is that I have a textbox with the following markup ,but cannot access the textbox from codebehind

<asp:TextBox
ID="txtTitle"
runat="server"
Width="236Px"></asp:TextBox>

Also I am using Telerik controls on my page .Do you think that it is the problem?

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Web Forms :: How To Access A Webform Control From A Web User Control

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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Web Forms :: Access A Control In Templated User Control?

Apr 15, 2010

I want to access a label in templated user control.

I find this code in internet, but it doesn't work.

Error:Object reference not set to an instance of an object.

public static Control FindControl(Control parent, string id)
{
Control recurse;
if (parent.ID == id)

[Code]....

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Web Forms :: Access A Control Inside User Control?

Mar 1, 2010

i have a Wizard control with 3 steps, in step 2 i have a formview, inside formview1 a have a label and a button.

When i click the button i would like the label to over wright the text of the label.

how can i access this label.

i tryed this with no success.

[Code]....

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Web Forms :: Code To Hide Download Link Works, But Now Need To Access A File *outside* Physical Path?

Mar 20, 2010

here's the code so far:

[Code]....

[Code]....

mov is a quicktime file, my server has the mimetype: video/quicktime .......... but as I read, this code forces the save as download box which is exactly what i want :) now, here's the catch, i the file I am fetching is NOT on the physical path... it is on a completely different server:Protected Sub LinkButton1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles LinkButton1.Click
Response.Clear()
Response.ContentType = "x-msdownload"
Response.AppendHeader("Content-Disposition", ("attachment; filename=mydownload.mov"))
Response.TransmitFile("http://myOTHERserver.com/files/mydownload.mov")
Response.End()
End Sub

Obviously this doesn't work since TransmitFile requires that the file be on your physical path, so how do i do this? Someone said you must use the stream method. Do you have any sample code I could try? I've tried the HTTPStreamReader object but it's giving me issues, so I would love to find out if there is anyway this might work. Now here's some more important information: this are HUGE video files.. we are creating a downloads page... written in asp.net -- so you create an account using the .net membership class, then you select the file you want, go through a form where you enter your billing info and then after you pay a certain fee (this is already implemented), you go to your "downlaods" area in your account... there you have access to the files......... the reason i'm doing this is because i want to hide the download link, which will be something likehttp://myOTHERserver.com/2340987sdfkjhalsdlkjh23 ... (something really crazy)....... we don't want people seeing this on the status bar (Therefore hiding the download link is ESSENTIAL)........ the files are a good 500MB each approximately; so i would love to hear all of your suggestions as to making the streamreader work for me and how long would it take for the streamreader to READ the file........

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Web Forms :: How To Access HTML Control Value From Server-side Code

Mar 20, 2010

I have to access my html control and get its value from my server-side code. Is there anybody who could suggest how I could do it?

My html control is very simple: <input type=text>

But the thing is: I can't make it <input type=text runat=server> cause in this case my jquery functionality (datepicker) does not work.

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Forms Data Controls :: Access Datalist Control From Code Behind?

Jul 22, 2010

I want to access my checkbox in code behind. I have my checkbox in my aspx file like this:

[Code]....

And i'm trying to set the checkbox visible=false like this but it's not working. Error message: Object reference not set to an instance of an object.

[Code]....

This is just one thing i want to do with my controls in my datalist, so i don't want to in my aspx file like this:

<asp:CheckBox ID="CheckBox1" runat="server" Visible='<%# if(Eval("isFolder")="1","false","true") %>' />

Because i have quite a lot of things i would like to do in the code behind when i'm getting my files..

Is it possible somehow to achieve this without having to put servercode in my aspx file?

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Web Forms :: Access Events In User Control?

Dec 30, 2010

I have DropDownList inside User Cotrol and i use this User Cotrol in my asp Page , in my page i have method that take paramter string

now i want to access the the DropDownList SelectedIndexChange from my page to execute the method by passing the DropDownListSelectedValue

(when user selecte value in dropdown list ,when it post back i watn to excute the method depent on value of selecte value )

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Web Forms :: Access To User Control's Properties?

Mar 11, 2011

How to access userControl's properties, when use FindControl method?

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Web Forms :: How To Add Web User Control With Code

Dec 29, 2010

how do I add a web control with code?

The code I was testing is the following

[Code]....

The error I am getting is

Value of type 'System.Windows.Forms.Label' cannot be converted to 'System.Web.UI.Control'

I assume this is because it trying to put a htmlbutton where a web control should be.

How do i get this to work with asp controls.

How do i get it to work for a asp type label?

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