In the below example i cant get the value of "4" to appear in the rendered page. The output from below compiles and executes just fine but all three of the values shown are "0".
Here's a short snippet: (hopefully I'm formatting this correctly)
[Code]....
I may be putting this wrong. I have an ASP.NET web page which has a GridView, a CheckBoxList and some buttons and textboxes on it. The CheckBoxList and the GridView get their data from an SQLDataSource.
I would like to turn this Web Page into a User Control (which I think I know how to do with the MSDN information). How would I set up this User Control to use the SQLDataSource from the Web Page it is placed upon?
Basically I want to call a user control from a master page. However, I need to pass an object (a List of objects to be more specific), to the user control. I'm generating the list of objects in the Page_Load of the master page. Here's the line in my master page that calls the user control.
<cu:Eventlisting1 runat="server" id="eventListing1"></cu:Eventlisting1>
This user control has a parameter called CalendarItems that accepts the list of items. However, if I try to set this inside of the Page_Load method, my control executes before the Page_Load and throws an exception saying CalendarItems is null. Is there any way around this?
EDIT: I have a drop down list on this page that determines what the list of CalendarItems is so when I populate the CalendarItems list I need to be able to read the selected value from the drop down list.
I haven't used these in awhile. I was just wondering is it possible to pass values or parameters to a user control from the aspx page. Say you register a control and then use it using something like
<uc1:SampleUserControl id="SampleUserControl1" runat="server"></uc1:SampleUserControl>
style syntax. Can you pass parameters in there?
I have a survey form, survey.aspx, that looks for information about 3 different people (hiking guides) who are all contained in a single DropDownList. Instead of repeating the list over and over, I figured I'd put them all into a single user control, GuideList.ascx, shown here.
[Code]....
The form has 3 instances of this User Control. Here’s what the first one looks like:
[Code]....
In trying to access the value the user chooses from the DropDownList, I have created the following code
in GuideList.ascx.cs
[Code]....
In Survey.aspx.vb, I have the following, that often blows up because it doesn’t like G1:
[Code]....
I have tried using GuideList1 and GetGuide and GuideList1.GetGuide and GuideList1.G1 and all sorts of variations, but cannot seem to figure out what I'm missing to access the value of the DropDownList.
how to read web.config connection string from a user control in C#?
View 2 RepliesI have two examples to show you what I want to achieve here. But to point what's different about my question, Is that I'm having a parametrized URLs and I want to implement URL rewriting to my application. But I don't want to convert the parameter in the URL to be placed between slashes..."page.aspx?number=one" to "pages/one/" << NOT!
First example:
http://localhost:1820/Pages/Default.aspx?page=2&start=5
To
http://localhost:1820/Pages/page2
Second example:
http://localhost:1820/Items/Details.aspx?item=3
To
http://localhost:1820/Items/ItemName
But I'll still need all the parameters in the original URLs
i have a usercontrol called navigationmenu whose data is static but varies with loged in1.empID 2.empType 3 Country my question is how can i cache the data of usercontrol based upon combination of these 3 parameters
View 9 RepliesI don't think I understand fully how ASP.NET does inheritance of controls.I have a user control, ucBase, which has an asp.net label in the ascx file. Code behind references the label and it works fine during run time if the control is not a parent for another user parent.
If I have another user control, ucChild, inheriting from ucBase, the label in ucBase's code is always null. ucChild has no controls in its ascx fileThe server controls (like the label) needs to be declared in the ascx file and not created programmatically.What needs to be done for ucBase to see its own controls when it's a parent user control?
I've got a web site that has a master page and that master page (mpMaster that has a user control ucControl1) which has a sub user control (ucControl2), this user control has a property which accepts a value. Now, I have a page that uses the master page
and on this page I have another user control (ucPageControl), I need to find a way of setting the value in ucControl2 from ucPageControl. Is this possible at all?
I am trying to assign user control from another user control ..first time its binding control successfully but when we refresh the data its giving error
saying "Object reference is not set an instance".
how to refresh data from another user control ...
My senerio below :
1 Aspx page
2. User control
calling usercontrol databinding method from aspx page but once it get refreshed ,not allowed to bind it again..
I'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">......
I load the content of some User Controls into my page with the use of jQuery. So I have this function that extracts the content from my User Control, and it works like a charm.
public string GetObjectHtml(string pathToControl)
{
// Create instance of the page control
Page page = new Page();
// Create instance of the user control
UserControl userControl = (UserControl)page.LoadControl(pathToControl);
//Disabled ViewState- If required
userControl.EnableViewState = false;
//Form control is mandatory on page control to process User Controls
HtmlForm form = new HtmlForm();
//Add user control to the form
form.Controls.Add(userControl);
//Add form to the page
page.Controls.Add(form);
//Write the control Html to text writer
StringWriter textWriter = new StringWriter();
//execute page on server
HttpContext.Current.Server.Execute(page, textWriter, false);
// Clean up code and return html
string html = CleanHtml(textWriter.ToString());
return html;
}
But I would really like to send in some parameters into my User Control when I create it. Is this possible, and how can i do that?
I can see that LoadControl() can take some parameters with object[] parameters but im really not sure on how to use it.
I have to access the parent form's controls inside an event handler method on my user control's code behind.
View 4 RepliesI have a web user control that represents a simple message box. It is used to display simple messages like "Item has been deleted", or "The item was saved successfully".
On the other hand, I have another web user control that represents the item in the form of an editable form (I made this a user control because this is used in two different pages). I want to embed an instance of the message box user control inside the editable form. I am writing this right after the @Control directive:
[Code]....
Instead of using @Register directives, I register the user controls in web.config and so far this has worked just fine.
With the above markup, the project compiles, but whenever I try to navigate to a page that contains this construct, I get an HttpParseException exception. Furthermore, Visual Studio states that the tack w7rc9:MessageBox doesn't represent a known control.
What am I doing wrong?
In Console App what is the correct syntax to read n numbers from the User for a int Single dimension Array?
View 4 RepliesI notice a user tries to hit backspace of a field that is read only and they can't edit, it works like a pressing the navigate back button for some reason.
View 4 RepliesI web application is in asp.net with Access databasesome times my application giving this error message "Could not read the record; currently locked by another user." or "Could not update; currently locked."I am using IDbConnection and IDbTransaction object.
View 2 RepliesI register all my user controls in the web.config file. In one of the modules of my application, I need to load a control dynamically. Is it possible for me to read the section of the web.config file where I have my user control data so that I can get its path directly from web.config?
View 5 RepliesI want to convert windows user control into web user control..I have the usrDataView.cs..I need to convert this file into usrdataview.ascx.can anyonr help me?...how I can convert the file...Is any method is available..
View 1 Replieshave two user controls on one aspx page. UC1 has a grid which contains a link button column which user clicks. Based on the value of clicked cell, I need to show some data into UC2.How do I pass data from UC1 to UC2? How do I invoke a function of UC2 from UC1?
View 2 RepliesAll I would like to be able to do is include one user control within another! Is this possible? I have spent the last hour searching the internet and it seems that I can't find a single thing.
In classic ASP it would be something like:
<!--#include file="EditProject.ascx"-->
I tried this but no luck!
Parser Error Message:
There can be only one 'control' directive.
Source Error:
[Code]....
Line 1: <%@ Control Language="VB" AutoEventWireup="false" CodeFile="EditProject.ascx.vb"Line 2: Inherits="Controls_WebUserControl" %>Line 3: <form runat="server">
It's simple to create both user control from the two world : ASP.NET+Razor or MVC 3.0.But i do not known how to consume the user control FROM the razor"_layout.chtml" page.I want to put such thing within the layout page: <uc:MyTag Prop1="" Prop2="" />So i need to declare this directive at top of the layout file : <%@ Register TagPrefix="uc" TagName="MyTag" Src="Controls/Mytag.ascx" %>
View 1 Repliesi want to read the pdf file uploaded by the user and to display the content of the pdf file in asp.net webpage...(not the pdf file itself ).
View 3 RepliesI have a user control which contains two text fields each assigned with requiredfield validators this control contains another user control contains say a button .On click of this button i need to validate the fields from the parent control text fields.I try the Page.Validate("ValidationGroup") with Page.IsValid it validates but the error message is not shown .Error message is shown only if i try to validate it from the contains which contains the required field validators ?
View 1 Replies