I thought I saw how to do this but can't seem to find it now.Is there a way to set the properties of all controls on a Form by Control Type?Meaning, if I have 5 textboxes on a form can I write code like .If page.contol is TextBox then
textbox.forecolor = Blue
Then when the page loads is sets all the textboxes forecolor on the form to Blue.
Is there a way for a property to access its own name and type at runtime using reflection? I want to access this info without hard coding the name or index of the property in the class.
Simple Example Code:
Private ReadOnly Property MyProperyName() As String Get Console.WriteLine((Get Current Property Info).Type.ToString) Console.WriteLine((Get Current Property Info).Name)
I am relatively new to programming and have managed so far with google and a lot of patience! I am having a problem naming timer contols at runtime. This is what I am trying to achieve.
1. I connect to my dataset and to my first record
2. I create a loop for the recordset
3. I create various objects on a form and name them using the info in the dataset
I also need to create timers and name them using the first field of my dataset. It needs to be dynamic as its database driven. There could be as many as 100 timers at any one point.
How to get a property to persist after its been changed dynamically during run-time? When Visual Basic reverts back to the IDE, the property goes right back to its original value.
I created a Custom Class and Implemented a Type Converter for it. I used this Custom Class as a new property of a Custom Control.Everything is fine at design time. I can set the values of this property but at run-time the values i entered resets back to the initial declaration i made.
I'm new to programming and would like to know how can i create radio buttons at runtime using the field values in my sql database. Im creating a survey application.(windows forms)in the relational database i have 2 tables one for questions and one for options.
This sets the includetime property correctly.In my backend code I also do this on page_load:
txtWhen.SelectedDateTime = now
When I step through with the debugger, I see that the property gets set, BUT when the page_load of the control itself loads, the property value is reset to nothing!
The page_load of the control:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load lbltime.Visible = IncludeTime If SelectedDateTime().CompareTo(Nothing) > 0 Then
I have a custom control. I need to add a property, say, Comparison, to the control. The property should be set at design time using a dropdown. The Dropdown will have String values like '=','>','<' etc. I tried using Enum values and working perfectly but I need to do some extra coding to convert the Enum values to the string I required. It would be great if I can get the values from the dropdown so that I can directly use the selcted value.
Can any one tell me how to read or write the control property values that has been saved as ocx state value in the XML? I have some controls. I am assigning a property values for that controls and it is saving as binary64 format. I need to automatically assign property values in the binary64 format in xml.
I am creating a User Control where I have a property called Items. Items is of type LibraryPanelBarItem Collection (custom class) which contains a collection of LibraryPanelBarItem objects. I would like to be able to add these at design time by using the Collection editor that VS uses for adding things such as treenodes/listviewitems. Ideally I would also be able to declaratively add them to the html syntax. I can get the Items property to show up but I get no intellisense to add the items between the opening and closing tags. [Code]
Is it possible to create a user control with a list of custom class type property? If it is, how can I? The issue is that, in designer mode the property is not displayed in property window. I can add the list on markup but when i switch to the designer mode it gives an error which is 'The user control does not have a public property named BookList'.
I've created a custom user control that has several properties. One specifies which database I want the control to access. I want to be able to present the user of the control a drop down from which he can select which database the control will interact with. How do I get the dropdown to work? I can get default values, but have yet to figure out how to get the selectable list.
I have 3 controls in my Form.Two Dropdowns and one textbox.My task is if i select a value in one Combobox then the related text should be display in other two controls.Ok I wrote a code in "SelectionChangeCommitted" event and now i am getting the values correctly.
i am creating a table in vb.net code (htmltable) with htmltablerows and htmltablecell. I gave on image control but thatr control cant have the .imageurl property, which i need cause i have a handler image.ashx which brings image from the database. heres' the code -
TD = New HtmlTableCell Dim img As New HtmlImage() img.ID = "image_" & rd("ID")
[code]....
on the last line, "img.ImageUrl" i get this error -'ImageUrl' is not a member of 'System.Web.UI.HtmlControls.HtmlImage'how do i fix this?
start with I was given a program by a friend that was created in Excel 2003 with the help of Visual Basic Editor. He said he used Visual Basic 2003, which he is not 100% sure about. Anyways he used CurLine in the program and when I try to open it in Excel 2007 and then open the Visual Basic Editor and run the program I get the following error:Run-time error '-2147418113 (8000ffff)':Could not get the CurLine property. Unexpected call to method or property access.
I have created multiple dropdown list at runtime and populated with data. I also have added an eventhandler to determine the selected value of the drop down list.
The code is as follows : Dim tbl As New Table() tbl.EnableViewState = "true"
I have a requirement where I need to have a "type safe" way of accessing property names, without actually instantiating an object to get to the property. To give an example, consider a method that takes as arguments a list of IMyObject and a string that represents a property name (a property that exists in IMyObject).
The methods implementation will take the list and access all the objects in the list using the property name passed... for some reason or another, we won't dwell on that!!
Now, I know that you can do this using an instantiated object, something like ...
Dim x as MyObject = nothing Dim prop As PropertyInfo = PropHelper.GetProperty(Of MyObject)(Function() x.MyProperty)
Where my helper method uses reflection to get the name of the property as a string - there are numerous examples of this flying around on the web!
But I don't want to have to create this pointless object, I just want to do something like MyObject.MyProperty! Reflection allows you to iterate through a types properties and methods without declaring an object of that type... but I want to access a specific property and retrieve the string version of its name without iteration and without declaring an object of that type!
The main point here is that although I am trying to get the property name as a string... this is done at run time... at compile time, I want this to be type safe so if someone changes the property name, the compilation will break.
I have a form where there's a shape and I'm trying to change the properties of the shape during runtime. For example, you press the Up button and it's supposed to move 30 units up:
A VB5 program I wrote years ago stopped working and is now giving me this error:
Run-time error '380':Invalid property value
I cannot figure out what has changed, since I run that program almost daily. It was working fine, then stopped (without any changes to the program). I suspect I may have uninstalled something it uses, but cannot figure out what.When I open the VB5 IDE, I get an error saying:
'c:program filesdevstudiovbComct232.ocx' could not be loaded--Continue Loading Project?
If I say no, it does not load and I cannot see the source code.If I say yes, it does load and I can see the source code but I get weird compiler errors.
If I wanted to say, alter the code definition of the automatic property X (at runtime, perhaps in Sub New), such that I could throw the PropertyChanged event
I have done some searching, but am still having trouble trying to set the browsable attribute of property to false at runtime in order to hide in the properties grid control (based on certain conditions).
In designer i had a button with errorprovider.The button show 3 extra properties at button's property grid in design time.Error on ErrorProvider1
IconAlignmnent on
IconPadding on
But how can i show this 3 extra properties in propertygrid at run time?
Private Sub Form_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim propertyGrid1 As New PropertyGrid() propertyGrid1.CommandsVisibleIfAvailable = True[code].....
I'm doing binary serialization and want to know if its possible to assign the type of the serializable object in the serializer method at runtime by passing the type as a parmeter. Is it also possible to assign the return type?
my error code is run-time error 1004 unable to get the correl property of the worksheetfunction class. I read the data from xlsx-files to one dimensional arrays in my vb - program. the essencial code parts are
Option Explicit Option Base 1 Dim winvyf() As Double, winvx() As Double