Declare Properties/Events Such As IsPostBack/Init On An Interface That A User Control Will Implement?

May 2, 2012

I'm having trouble porting some .NET2-era C# to .NET2-era VB.NET. Specifically, I am trying to define an interface that an ASP.NET user control will implement.(For background, I am trying to re-implement Phil Haack's Model-View-Presenter example from several years ago: http://haacked.com/archive/2006/08/09/ASP.NETSupervisingControllerModelViewPresenterFromSchematicToUnitTestsToCode.aspx)

The C# interface I'm working from defines properties and events (IsPostBack, Load) that are already implemented by the base control.However, VB.NET is forcing me to explicitly implement these properties/events in the user control (Public Property IsPostBack() As Boolean Implements IView.IsPostBack...). I'd like to just define these in the interface and not have to do anything special in the code-behind of the implementing user control.I'm assuming that I can do this in VB.NET, I just don't know how. I've spent all sorts of time googling/bing-ing, and haven't come up with the answer.

View 1 Replies


ADVERTISEMENT

Create An Windows User Control With Events Properties, Methods

Apr 11, 2012

I was looking for a tutorial and i find this

[URL]

but it does not give the sample code for creating a user control with properties, events, methods

complete to create windows user control? that includes creating properties, events, methods? and if it has how to create web user controls better

View 1 Replies

Events, Delegates And Interfaces - What To Declare In The Interface

Apr 30, 2012

I have ended up with the following event structure in a custom control - it seemed to be the recommended way for my scenario in MSDN (though it wasn't easy to follow!) This is the MSDN page I used,MSDN - How to: Implement Events in Your Class.

[code]...

What now has me totally confused (even more so than I was about setting up the above pattern) is what to declare in the Interface? I wanted to declare the event in the interface since there will be several other classes that do similar things and they need to be used interchangeably (hence an Interface in the first place) and if I've gone down the Interface route it seems smart to make sure the 'minimum' content that each class will have to implement declared in the Interface...

View 13 Replies

Mouse Events And User Control - Control Won't Respond To The Events

Dec 31, 2010

I created a control that has picture box control docked within it. This control allows me to "animate" the image by swapping them out by setting the interval to swap them at. I want to use this control kind of like an animated icon within a application, but because the picture box is docked, the control I created won't respond to the events, MouseHover specifically. [Code]

View 2 Replies

User Control Properties - Finalize My Design Time Properties Grid

Apr 27, 2011

I'm making a control and I am trying to finalize my design time properties grid. I have several List(of Class) items as public properties and when I click on the design time menu (while testing the control) there is the word "Collection" and a button with an ellipsis (...) that brings up a neat pop up with the buttons Add/remove and all of the public properties of the collection's class on the right hand side. Basically for a non-collection instance of a class (with public properties) I'd like a similar button to show up. I know I could put all of the properties in the main control class and group them, but I like the pop up box feature. Anyway to duplicate this? (think font grid item etc.)

View 3 Replies

Directory Entry Control Properties And Events

Feb 25, 2010

I need the directory entry control properties and events.

View 1 Replies

Run A User Control Sub After Container Has Initialized User Control Properties?

Dec 22, 2010

In a user control I have the code shown below.

I now realize that it is incorrect because the container's InitializeComponent property initializations have not run yet and they must be run prior to Refresh being called.

How (where) can I run Refreash after the container has initialized this user control.[cod]e...

View 1 Replies

Interface And Graphics :: Cannot Change Color Properties For MonthCalendar Control

Sep 12, 2011

[code]For some reason I cannot change the color properties for the MonthCalendar control.[code]No matter what I change it to, it stays to its default color of white and black. Actually none of the color options work on any of the sections of the control.I am trying to hide the white border around the control and but a blue bar under the name of the month (top section).I have tried deleting the control and creating it anew on the form but no luck.It was working a couple of weeks ago.

View 1 Replies

Inheritance A Classic React Class Into A User Control To Add The Hight And Width Properties To The Control?

Feb 28, 2011

I tried it and get an error but maybe I'm tring the wrong way. Can a usercontrol inherate an application defined class ie.. could you inheritance a classic rect class into a user control to add the hight and width properties to the control without having to do all the coding all over again? Currently I just declair a private instance of the class within the control and then encapsalate. It would be nice if I could just inherit all the functionality of my classes into controls designed to implament the classes.

View 1 Replies

Use (if Not Ispostback) - Last Note With ("EnableViewStateMac="false") It Make Ispostback True All The Time?

Nov 5, 2009

i'm working with crystal report and i use (if not ispostback) to set X and in else to retrieve X . the problem is its working properly in some pages and not working in others.this code sample.

If Not Page.IsPostBack Then
Session("VehicleStatusSelectionFormula") = SelectionFormula
Else[code]....

the problem like i said in last note with ("EnableViewStateMac="false") it make ispostback true all the time.

View 1 Replies

Access User Properties Within User Control?

Jan 27, 2012

I've created a user control that is basically a Panel that contains 1 label,3 TextBoxes and a few properties that set/get some short integer values.During a form load event I display a number of these Panels.I then access the Panels name (and other panel properties) via a user-created handler for the panel's click eventHowever I would really like to access the values from the user-control's properties.

Public Sub load_Panels()
Dim pnlName As String
Dim x As Short = 69

[code].....

View 9 Replies

Declare A Property As An Interface Collection Of An Interface?

Feb 7, 2011

I want to declare a property as an interface collection of an interface, and I want to instanciate the explicit type later, in the constructor. Something like this.

Public Class LicenseFile
Implements ILicenseFile
Public Property Collection As IList(Of ILicenseFileDataNode)

[Code]....

In short, the question is "Why It Didn't work"? This is a simplified scenario, but It's easy to take a workarround, But I need understand the reason because It's fails.

View 2 Replies

C# - Control Or Control Interface Is Editable By The User?

Dec 1, 2010

I'm looping through an array of controls and need to know which controls an end-user has the ability to (via JavaScript or directly) change the value that gets posted back. Where can I find such a list?

So far I have this:

Private Function IsEditableControl(ByVal control As Control) As Boolean
Return TypeOf control Is IEditableTextControl _
OrElse TypeOf control Is ICheckBoxControl _
OrElse GetType(ListControl).IsAssignableFrom(control.GetType()) _
OrElse GetType(HiddenField).IsAssignableFrom(control.GetType())
End Function

View 2 Replies

Handling Events From User Control Containing A WPF Textbox?

Mar 22, 2010

In order to take advantage of the spell checking ability of WPF textboxes, I have added one to a user control (with the use of elementhost). This user control is used in various window forms. My current problem is trying to handle keyup events from this textbox but the windows form is unable to "get" any event from the control. I can access the properties of the textbox just fine (i.e. text, length, etc.) but keyboard events don't seem to work.I have found, however, that the following will bring back events from the WPF textbox:

Public Class MyUserControl
Private _elementHost As New ElementHost
Private _wpfTextbox As New System.Windows.Controls.Textbox

[code].....

The user control is now able to do something after the PreviewKeyUp event is fired in the WPF textbox. Now, I'm not completely sure how to have the window form containing this user control to work with this.

View 3 Replies

How To Create Custom Events For User Control

Oct 15, 2009

How to create custom events for contol. i have created a user control mytextbox & i am showing some properties of textbox & now i want to expose user control events

I am showing Following properties to user

CODE:

How to expose Events

View 3 Replies

Shadowed Events In A Custom User Control?

Nov 11, 2009

I have created a base class for some user controls, then I created controls that inherit this class. This is so I can CTYPE the inherited controls back to the base class and refer to properties, methods and events in a common interface. The base class declares has some Public Event BLAH(Sender as object, e as EventArgs) declarations. The derived class then has Public Shadows Event BLAH(Sender as object, e as eventargs) declarations. My parent form adds handlers for the BLAH event. When the derived class fires the event, though, it does not get raised to the parent form.

View 1 Replies

Checking User Control's Properties?

Sep 3, 2009

Checking User control's properties?

View 4 Replies

DataGridView Properties Through User Control?

Sep 20, 2011

I've built a custom user control in VS2010, incorporating two datagridviews, and asplitpanel - The idea is that there is a "Main" datagridview control, and the second is an internally controlled grid that (when shown) displays the Columns which are set as invisible. This allows the user to drag the columns onto the main grid, in order to display the columns.This all works fairly well. I've set the modifiers property on the Main DataGridView to public, so that by and large, the developers can make use of the control just like a normal DGV (albeit with an extra level to the code).

I've also created dummy events for each of the events that the DGV normally raises, and pass them through the usercontrol, so that the developers can attach to the DGV events as normal. Again, this appears to work fine.Unfortunately, I've run into a problem. I'm trying to set the RowSizeMode to DisplayedCells (or indeed any value). If I try it in the designer, it appears to retain the change until I run the application, after which the property reverts back to normal.

View 8 Replies

Properties Not Initialized In User Control?

Mar 2, 2012

I am opening a form with a user control with some code like this:

Dim Frm = Form1
Frm.UserControl1.Property2 = Value
Frm.Show

[Code]....

View 11 Replies

User Control With Other Controls As Properties

Jan 18, 2012

In my asp.net 4.0 application I have a standard set of tabs controls across the application that has one tab for Search, one for View and one for Reporting.I am in the process of updating those tabs and I was hoping to be able to wrap their functionality up into a single user control since they all function in pretty much similar ways. The issue I am having is how to create a property called SeacrhTab/ViewTab/ReportTab that allows me to assign a different user control to it depending on the area of the application (e.g. CompanySearchControl, ContactSearchControl, etc.) Anyone ever tried to accomplish something similar?

View 2 Replies

Develop User Interface Control

Jun 6, 2011

I am trying to develop system where i can add run time some user control like button, textbox, checkbox.

View 2 Replies

User Interface - Control Without A Form In .NET?

Aug 26, 2009

I would like to make an application where there is no form, only controls, this way theuser can see what they are doing on top of their work. How could I for instance put a textbox on the screen, just like form1, but without it being a parent of form1, almost as if it was form1. Basically form1 is hidden.

View 2 Replies

Handle Events On The Dynamically Loaded User Control?

Jun 20, 2011

I have the user control that is loaded dynamically. When the user save the data by clicking on the Save button, a raise event is passed.

Public Sub RaiseCloseEvent(ByVal sender As Object, ByVal e As System.EventArgs)
RaiseEvent Close(sender, e)
Debug.Print(String.Format("The control {{0}} was closed by {{1}}.", Me.Name, sender.ToString))
End Sub

In the save button I have called the RaiseCloseEvent as follows:

RaiseCloseEvent(sender, e)

Now, how can I close the user control form? Any Idea? I have used VB.Net language.

View 2 Replies

How To Change User Control Properties In Form

Nov 20, 2010

I have created a user control with some properties but when I change them in a form and build the return to the default value, Here is the code I did:
Public Property ButtonFind As Boolean
Get
Return CmdFind.Visible
End Get
Set(ByVal value As Boolean)
CmdFind.Visible = value
End Set
End Property

View 4 Replies

Let The User Change Some Of The Properties Of Control At Runtime

Nov 17, 2009

I have created a user control and need to know how I can let the user change some of the properties of this control at runtime and have the values persist on next startup. There are multiple instances of this control on the form.

View 10 Replies

User Control Properties Appear In Browser Even Though They Haven't Been Set Browzable?

May 20, 2009

something I just noticed which is work-aroundable but a little annoying. We have a user control which has several properties. These have not had the <Browsable(True)> Attribute applied. However, when we drop the control onto a form the properties are appearing in the property list

View 8 Replies

User Control With Simple Textbox - Custom Properties

Oct 15, 2011

I've created a user control with a simple text box and a corresponding label and added a few custom control properties. When added to a form, I'm trying to loop through all control of this type and evaluate the custom property. In the below, the cntl.MyCustomProperty is not recognized. I can evaluate the property when I check each user control on the form by name, but not by using the loop below. I would much rather use the loop as it is much cleaner.

For Each cntl As Control In Me.Controls
If (TypeOf cntl Is MyUserControl) And cntl.MyCustomProperty = "ABC" Then
''Do some stuff
End If
Next

View 2 Replies

VS 2005 Possible To Remove Some Of Inherited Properties Of User Control?

Mar 30, 2009

i created a user control and inherited a textbox.is it possible to remove some of the inherited properties of the user control?like to Multi-Line, PasswordChar etc also at the Form Design, when selecting the user control, there's an arrow on the upper-right which i also want to remove.

View 2 Replies

Interface And Graphics :: Transparent Background In User Control?

Dec 3, 2008

I am attempting to write a simple 11ball style game. It requires images of poolballs overlapping each other. Since the balls will need some internal intelligence I was hoping to create them as usercontrols.I am having trouble gettiing the control's background to be transparent.Setting the background color to (Web) transparent only makes the background clone the form background color.

View 1 Replies

Access Properties Of Controls On A Programatically Created User Control .NET?

Nov 19, 2011

After taking a few years off from programming, I decided to start learning vb.net. I have created a user control that contains a picture box. I added some custom properties to the picture box that will hold general string data from a database.

My problem is that the user control is programatically created during run time, and during this time a DoubleClick event handler is added for the picture box that is within the user control.

I need to be able to set the custom properties for the picture box during the creation of the user control, so that when the control (picture box) is double clicked I can read these values but am unsure on how to access them.

The picture box is the entire size of the user control, or I would just add the custom properties right to the user control and add the DoubleClick event handler to that. However, double clicking needs to be done on the picture box since it takes up the entire user control, unless anyone has an idea to trigger the DoubleClick event of the user control when the picture box is double clicked.

[Code]...

View 1 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved