VS 2010 Adding Properties To An Existing Class / Control
Sep 27, 2011
Is there any way to add new properties to a control? For example, I'm using an "OvalShape" from Microsoft's Powerpacks, these are designated as "Cells". I would like to add properties to the class itself (if I had a physical class to edit) for different processes such as "energy level", "family number", "mutation", etc. General variables that are either Boolean, Integers, or etc. If there isn't a way to edit the powerpack class itself, is there a way I can use the ovalshape power pack in my own class and add extra properties to it myself?
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Sep 15, 2011
I'm wanting to dynamically create some controls relative to controls already placed on the forum at design stage, how do I find the locations of the controls that are already placed?For example, I have a label called lblDateTime, its location is (13, 167) and its size is (65, 13).In my code, I want to place a new label below this label.I've tried to set the location and size properties of the new label using the location and size properties of lblDateTime.Size works, no problem, but the location of lblDateTime always returns as 0,0.[code]I want to set lblMessage DateTime. Location to (13, 180), but I'm actually setting it to (0, 13)What confuses me most is that Me.lblDateTime.Size is returning the correct values, so it's not like my code isn't finding the control.
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Aug 4, 2009
I created this custom listbox, and I want to change the border of the focus rectangle, so I made up this property:
vb.net
Private H_BorderColor As Pen = Pens.Black
Public Shadows Property HighlightedBorderColor() As Pen
[Code]....
But when I'm at the designer tab that property is editable, I attached a screen shot of the properties box.
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Nov 6, 2008
I have my own class of graphic objects, and now I'd like to allow a user to right-click on one of those within the application and see a properties window. Is there a pre-built dialog or control for displaying properties at runtime? I'd like to have something just like the IDE properties window button for my application.
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Mar 2, 2012
I have a class that represents the table of a db-row. Its properties are the columns of the table. I add a new row to the table with the following code:
Public Sub AddRow(oTestRow As TestRow)
Dim sql As String
With oTestRow
[Code]....
That is just an example, but my classes have around 30-40 properties and this brings a very large and complex sql string. Creating, editing or maintaining these sql strings for many classes could generate errors. I am wondering if any compact way or method exists in order to add the whole object's istance (the properties of course) to the table "TestTable" without writing such a large sql string. I created the TestRow in the way that its properties are exactly the columns of the table "TestTable" (with the same name). But I did not found in the ADO.NET anything that could be used.
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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.
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Oct 21, 2009
adding the properties of a control to its parent? Without having to rewrite all the properties... For example, if I have an user control with a button inside, and I want to have the "text align" property of the button, in the list of properties of the usercontrol. If not, is there a way of making the child control of an usercontrol editable?
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Nov 7, 2010
I'm using the next class to fill my listview
Imports System.Data.SqlClient
Public Class ListViewData
Public Sub FillListView(ByRef MyListView As ListView, _
[code]....
I want all the listview columns to be in auto width. I tried adding the next line of code but then only my first column fills my entering listview width. All other columns are not affected!
lvwColumn.Width = -2
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Apr 5, 2010
How do I set a User control (or a class with a few properties) to appear in the tan bar at the bottom of the Designer? I have tried googleing it but, I don't know what that bar is called (Kinda Hard to Google without know what to Google)
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May 16, 2012
Is there a way to validate ALL properties in a class at once? I have a class with various validations added to property "Getter" to validate user inputs. (The problem is that all my validations only invoke if a user input something to the field that bind to the property. Any fields that user simply bypass will not get validated). Ideally I want to loop through each property and validate in a "Save()" method.
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May 3, 2012
Ok so my boss told me that I can't use DataSet's and dataadapter and such like this because it isnt good for scalability. So, I must change the way I have my 28,000 records binded to my form. The problem is, I'm only 3 months in with VB.NET and I don't know of any other way to accomplish what I need to do. I was reading somewhere that I can use a Class as my "Order" and I can bind the variables/properties to the form and with this, I can navigate through records while having controls on each important part of the "Order". Unfortunately, I don't know what I'm doing, this is as far as [code]Any guidance as to what I am to do from here in order to pull the data from my database and bind to the property, then to a text box/combo box, and a way that I can use my binding navigator to go through the many records.
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May 20, 2011
I am just learning about making classes and need to make one with 2 properties.Below is the beginning of a class for ingredients in a coffee machine.But I want sugar and water to also hold name (string) ='sugar' and number(integer) = 4 so its like thisIngredients.coffee.name or ingredients.coffee.number[code]
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May 11, 2010
I'm trying to make a very simple audio tag editor. The idea is that the user can select as many audio files as he likes from a ListView, and a PropertyGrid will then display their tags + their values.When multiple files are selected, I want the property grid to display the values of the tags that all files have in common, and display empty values for tags that the files do not have in common.As an example, look at the properties list in your Visual Studio IDE when you select multiple controls (of the same type for this matter). Select a few Button controls, for example, and notice that the properties whose values are the same (often things like Font, ForeColor, etc) are displayed. Also notice that the values for properties that are not the same (Text, Name, etc) are empty.
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Jan 25, 2012
I'm trying to figure out a way to sort the entries of a listbox... but in a different way instead of the obvious one (sorted property). First of all, I need to explain how the items are populated at first:
[Code]...
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Mar 1, 2010
I need to create unit testing project for my current website. The currentw ebsite si written in VB. All unit testing examples are using interface to create mock object. My current VB class does not implment any interface. Can I add interface and implement it to my current class and functions without affecting or changing codes to any pages in my website that call the functions? For examples my current class is like:
[Code]...
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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.)
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Oct 17, 2010
When I am trying to add a QTabControl to my form, I get this error:
Type universe cannot resolve assembly: System.Design, Version=1.0.5000.0, Culture=neutral,PublicKeyToken=b03f5f7f11d50a3a
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Nov 16, 2011
I wrote a simple application to help me with my work the interface looks like this:i use a button to add a new custom control every time by the following code :
Private Sub btnAdd_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAdd.Click
Dim NewGard As New GardControl
NewGard.Left = x
NewGard.Top = y
[code]....
but after the form's lower end is reached, the added controls appear like this:spaced greatly & exponentially from each other despite the y coordinate is accurately increased every time by 41?
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Sep 5, 2010
I have a datagridview which is bound to a local databse table through a Linq to SQL class.
Everything works as I would expect, when the application runs, up to a point.
If, in the datagridview tasks pane I enable Adding, Editing and Deleting all work as expected.
If I disable Adding & Deleting, leaving Editing enabled, Editing works as expected.
If I disable Deleting & Editing, but leave Adding enabled, Adding does not work, despite the row for new records being displayed. I can move around the row but not enter data.
I suspect somehow its the datasource as opposed to the datagridview that is the cause of my problem but as I say, I can add rows if the Enable Editing option is selected.
Changing the relevant properties programatically makes no difference.
I've been searching for the reason for a couple of days without success.
I have a workaround, by leaving Enable Editing set and programatically setting each row during the RowPostPaint event to be readonly except the row for new records. I would just like to understand what is going on.
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Dec 29, 2010
This is another one of my "I think it's not possible but I need confirmation" questions.I have a base class for a bunch of child classes. Right now, this base class has a few common properties the children use, like Name. The base is an abstract class (MustInherit)Technically, this means that everytime a child class is instantiated, it lugs around, in memory, its own copy of Name. The thing is, Name is going to be a fixed value for all instances of a given child. I.e., Child1.Name will return "child_object1", and Child2.Name will return "child_object2".
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Jan 6, 2012
I am playing around with Drag and Drop, and I am having an issue with AddHandler. I am creating labels and displaying them on a form. Before I add each label to the form, I add 2 event handlers (DragEnter and DragLeave). When I run the code, it hits the first event handler (DragEnter), but doesn't hit the second event handler (DragLeave). Either I have coded something wrong, or the second handler is not being added.
Here is my code (note this is just something Im playing around with for learning):
Public Class Form1
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
[Code]....
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Jan 4, 2011
I've tried a couple things to add items to a combobox (I've also Googled a lot but haven't found anything for VB2010) and on top of that, how to make it so that if the user selects 10ms, it changes the Timer1.Variable to 10.
Here is my progress from what I found on Google
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
ComboBox1.Items.Add("10ms")
[Code]....
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Aug 19, 2009
I have a class in which some of the fields are also classes.I can put values in the "normal" properties, but in the others when o try to assign values it gives the: "Object reference not set to an instance of an object"But the code compiles fine.
dados_Defenicao = New ServiceReference1.draftClaimEntryDefinition
dados_Defenicao.arCode = "123"
dados_Defenicao.claimMarket.warrantyType = "w" - Here it gives the error
How can i fix this ?
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Aug 19, 2009
I have a class in which some of the fields are also classes.
I can put values in the "normal" properties, but in the others when o try to assign values it gives the: "Object reference not set to an instance of an object"
But the code compiles fine.
dados_Defenicao = New ServiceReference1.draftClaimEntryDefinition
dados_Defenicao.arCode = "123"
dados_Defenicao.claimMarket.warrantyType = "w" - Here it gives the error
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Jan 10, 2010
We can add class in class diagram and voila the code show up. What about the other way around. Say we already have a class. Can we add that to class diagrams?
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Aug 3, 2011
I have a visual basic 2010 project with a solution. When I double click the solution the project opens. I cannot see the solution file. I am trying to add an existing project to my solution but I am having trouble.How do I add an existing project to an existing solution?
In VB 2005 if I double click the solution the solution opens with the project underneath it. But in VB 2010 they have made it complicated apparently.
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Jan 17, 2011
I wanted to add new column to the existing table in my database table Please help.in the form it has a textbox in which you can enter any name that you want you column to bear. all this will be at runtime.i try but it keep saying (format of the intitialization string does not conform to specification starting at index 0) [code]
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Mar 12, 2009
having trouble adding records to an existing dataset, I tried the following code but it made a new connection which I don't want:
Dim inc As Integer
Dim con As New OleDb.OleDbConnection
Dim da As OleDb.OleDbDataAdapter
Dim sql As String
[code].....
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Mar 22, 2010
How to get the value of table in sql database and adding in existing table?
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Aug 4, 2009
I have an executable that now has a requirement to expose data in XML format via a web service which can be queried by a browser.While I've seen tons about consuming web services and creating web services in web projects, I've not found anything that adequately explains adding such a service (or an equivelant) to an existing Windows app.
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