VS 2008 Can't Override ToString Of List(of T) For Purposes Of Property Grid?
Dec 13, 2011Just say i have:
vb
Public Class Something
Inherits List(Of String)
[code].....
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VS 2008 Override The Method ToString() For The Property CheckBox.Checked?
Mar 13, 2011How would I override the method ToString() for the property CheckBox.Checked?
View 2 RepliesIDE :: Make A Property In A Property Grid A List Box In 2010?
Feb 21, 2011I have the following property in a property grid in VB.Net 2010.
<Description("Rapid Entry Post Car Wash Settings CarWashOptionPushButtons"), _
Category("Post Car Wash")> _
Public Property CarWashOptionPushButtons() As String
[code]....
I need to make this property a list box that gets the values from a database table and populates the list box with the values from the table. I have tried numerous things to no avail.
Override Date.Now Or Date.Today For Debugging Purposes In An Asp.net Web Application?
Aug 5, 2011We have a very massive system where reports are run off dates from specific days through to today's date using various definitions of "GenerateSalesReport(DateStart, Date.Now)". For debugging purposes I want to simulate reports that occurred in the past so I need to change the object "Date.Now" to a specific date from the past on my development environment. Can you override date.Now?
View 3 RepliesVS 2008 - Property Grid - Click On Item Show Its Property
Mar 18, 2009I have a listbox with several list items added. I want that as user click on an item, I should be able to show its property. This should change for different items. For example (hypothetical) : Listbox has numbers 1 - 10. Now when I select 1 I should be able to set property - Name, Lastname, Colour, Age.
When I select 2 I should be able to set - Age, Hair Colour (clr shows), Weight, Date. When I select 3 then - City (combo box drop down), Country, Age only. This way value changes for diff items. One way is to put them in property grid and show them. Though this looks nice but adding/removing items in that is not easy. You need to have a class that refer that to prop grid. Do I have to code for each classes for all values in listbox or is there an easier way to manage items in property grid. If you think prop grid is not the right tool for such an activity then can you suggest something else.
VS 2008 Flag Enums In Property Grid
Jul 10, 2009I have a flags enumeration property that I need to show in a property grid: [Code] In the property grid however, it only allows me to select a single value. I cannot combine the values like usual in a flags enum. How do I show something like a checked listbox in the property grid, so that the user can combine flags by checking items? A None and All item would be great but not required. [url]
But even that does not work properly. It seems to check and uncheck items arbitrarily. If you check the first and fourth item for example, the second and third items will sometimes be checked too. Yes, I realize that is supposed to happen with the TestEnum property (as that defines 'BottomRight' as 'Bottom Or Right', so that's logical), but it also happens with the SecurityFlags for example, which it shouldn't.
VS 2008 Property Grid Sub Items To Have Properties Too?
Dec 5, 2011i have a clsTest with the following layout:
vb
Public Class clsTest
Public Property Test1 as string
'...
[code]....
how can i make it so when i show clsTest's properties in a propertygrid it has the ability to expand clssettings properties? (kind of how font does it on a text box for example)
How To Override SelectedItem Property
Mar 5, 2009How to override the SelectedItem property? When you look at the description of the SelectedItem property, the description shows as:"Gets the selected item with the lowest index in the list control". I would like to bypass the "lowest index" portion of the property...I have multiple items in the same list with the same value, but different text. I just want to set the SelectedItem to the actual item I've selected, not one with the same value that appears earlier in the list...
View 16 RepliesVS 2008 Properties In 'groups' (class) In Designer (property Grid)?
Jul 29, 2009I'm creating a UserControl that draws a simple radial gauge. I need it to be very customizable; the user should be able to customize everything such as the colors, fonts, sizes. So, I just made a property for every customizable detail. For example, I had ScaleFont, ScaleColor, ScaleStart, ScaleEnd, ScaleInnerRadius, ScaleOuterRadius, ScaleTickmarkFrequenty, etc.. etc.. etc...
Because there are so many properties about the same subject, I wanted to 'group' these properties into one "property". I've seen this done loads of times in third party controls, but I've never done it before myself.The idea is that the properties can be accessed like
Me.Gauge1.ScaleSettings.Start = 10
Me.Gauge1.ScaleSettings.End = 80
...
So far, I tried creating a class for each group, for example a clsScaleSettings class, containing properties like Font, Color, Start, End, InnerRadius, OuterRadius, TickmarkFrequenty, etc (corresponding to the same properties as above).
Then, for every 'group' or class, I create a Property. For example, I have the ScaleSettings property, which simply returns an instance of the clsScaleSettings class (I initialize the instance only once of course):
vb.net
Private _ScaleSettings As New clsScaleSettings
Public Property ScaleSettings() As clsScaleSettings
[code]....
Now, this works in the code editor. I can now use
Gauge1.ScaleSettings.Font = Me.Font
for example, and it sets the font correctly.But, I does not work in the designer, in the Property Grid. The whole reason I made the effort to move and rename nearly all properties (about 70!), and all references to those properties, to separate classes, was so that the user could design the gauge more easily using the Property Grid!Instead of having 15 settings related to the scale, scattered all over the Property Grid, he can now have one ScaleSettings property, which he can expand, and then he can edit the properties of that group easily.The ScaleSettings property is greyed out in the property grid... So I cannot expand it and view it's underlying properties.
How To Override Dataset.Desinger Property
Nov 20, 2009In my project, I have a table that has an image column, but with vs2008 it stores the image as bytes. I have the column set to allow nulls. When I save my image I convert it to a byte array. Then when I retrieve that row, I convert the byte array back to the image, no problems. The problem is when there is not an image selected I return Nothing to the datatable, saves ok, but when I try to retrieve that row, The dataset.desinger throw the "value in column dbnull". I can temporary override this error with a code change in the dataset.designer, but it does not stay permanently. How can I override the dataset.desinger property permanently.
Original dataset.desinger code:
<Global.System.Diagnostics.DebuggerNonUserCodeAttribute()> _
Public Property Image() As Byte()
Get
Try
Return CType(Me(Me.tableCustomers.ImageColumn),Byte())
[Code] .....
All I did is add the if statement capturing the dbnull and forcing it to return Nothing instead. When I close VisualStudio, then reopen this change is gone. How can I keep this or override it.
Net Property Grid. Is There A Way To Let The Grid Manipulate Object In Different Way
May 31, 2009As I understood , The property grid is given an object which it can manipulate by extracting its Properties using reflections.
My problem is that I have a set of Parameters that is determined during run-time , thus I can't staticly compose a class with properties to represent this set.
I have two idea in mind to solve this problem but both are complex and will probably consume lot of time , infact i will say they are not practical under my time constraints. One is to use Reflection Emit in order to define a class dynamically and the other is to dynamiclly build a C# source file and then compile it using CodeDom.
Can Property grid behave in a different manner( other then extracting the Properties of an object using reflections ) that can suite my problem?
I want to say that the reason I went to the property grid from the begining was its ability to provide realy nice Data Retrieval UI for common types.For color you autometically get a palette , For dataTime you automatically have a nice calender. I would like to get those things automatically If possible.
Override Textbox Properties Like Selectionstart Property?
May 25, 2011It is possible to override textbox properties like selectionstart property
View 3 RepliesOverride The Read Only Property Of User Control .OCX?
Jul 27, 2009I have used thirrd party tool from BigSpeed for file transfer. When ever I am trying to assign a value from (txtUserName) to the property like
FileTrans.GetUserName=txtUserName.text.trim
It gives error as Readonly property..... That means I can not assign a value to it.
VS 2010 Override Text Property In Textbox?
Aug 9, 2011I just start working with VB. In a programme I need to keep the value in text property after programme closed.That is why I want to change (override) Text property in TextBox.Then this value will be default value when I open the programme again.I will assing a value to textbox1 in a Sub.
Sub button1_click
Textbox1.text="ttt"
End Sub
Then I need to change the Text value under "Properties" window.TextBox1 System.Windows.Forms.TextBox
I think there is Get-Set method for property override but I dont know how to use.How can I do that?
Strategy To Override Enabled Property Of A User Control?
Aug 5, 2009I have a usercontrol with a picturebox and a few buttons related to it, such as LoadFromFile, Paste and Zoom (that last one pops up a new form). Is there a way to override the basic Enabled property of the usercontrol so that I can keep the Zoom button active all the time, while turning off the other buttons?
I realize there are 2 "obvious" replies. don't do Enabled=False, create a custom method. do everything in the one form, not a usercontrol, so you can pick and choose disabling. Both are less than ideal, given that I'm putting this control into a couple of existing forms, so I'd like to work around how those forms already behave. So is there a way to override the behavior of my usercontrol when it gets disabled? What would be my best strategy?
Property Grid - Open A Dialog Box To Edit A Property?
Oct 29, 2009Property Grid - Open a dialog box to edit a property?
View 1 RepliesPossible To Override An Autogenerated Property In Designer File Using A Partial Class?
May 31, 2012I am using Linq to Sql that generated a data contract for a table. I have a date field in that table which is a non-nullable field. I need to override the auto generated property of the date field to return a specific value, something like [code]Is it possible to override an autogenerated property in the designer.vb file using a partial class? I dont want to create a new property as it is currently being accessed in n number of places and I dont want to change it in every place.
View 1 RepliesOverride The Datetimepicker Object To Remove The Texte When The Property _clearOnDisabled Is True?
Oct 12, 2011I would like to overrides the datetimepicker object to remove the texte when the property _clearOnDisabled is true. When _readOnly property is true, I would like to show the text in black not gray. So I tried with WndProc but I seem that every single object go through my function not only my datetimepicker. I get 100% CPU when I put the WM_PAINT message. I also tried to overrides the OnPaint but its not getting in.
Imports System.Drawing
Imports System.Windows.Forms
Imports DTP.WindowsMessages
[code]...
C# - From A List<object> , ToString() Them Just When They Are Primitive Types Or Have This Method Overridden??
Feb 15, 2011Given a list of objects, I'd like to print a string version of them just in case the object.ToString() result is a relevant string.By that I mean I don't want to get things like:
obj.ToString() -> System.Collections.Generic.List`1[MyLib.Dude]
obj.ToString() -> System.Collections.Generic.Dictionary`2[System.Int32,System.DateTime]
obj.ToString() -> System.Byte[]
But I want to get things like:
obj.ToString() -> Hi
obj.ToString() -> 129847.123
obj.ToString() -> Id = 123
What should be the best way to implement this in a method:
Public Sub PrintInterestingStuffOnly(ByVal coolList as Ilist(Of Object))
For Each obj in coolList
'insert solution here
[code].....
Override List - Perform Some Logic BEFORE Add The Ticket?
Mar 2, 2012I hava a class with this public property
Private _tickets As List(Of Ticket)
Public Property Ticekts() As List(Of Ticket)
Get[code]....
When I call the add method, I have to perform some logic BEFORE add the ticket.The logic is not an important topic, but I eventually have to remove some ticket before ADD the new one.
Override Drawbackground For List Box To Change Color Of Background?
Jul 28, 2010any body give some example for overriding drawbackground method so that I can change the list box item background color in drawitem event (calling e.drawbackground)
View 1 RepliesOverride The "always On Top" Property Of The Windows Taskbar?
Sep 24, 2005I'm writing a windows application in VB.net that I would like to give to other users. I've discovered that the Maximized appearance at runtime of my startup form is partially obscured at the bottom by the Windows taskbar if the user has set the property (via Control Panel) of the Windows taskbar to be "always on top" of other programs.I need the full client area of my start-up form to display various pieces of information, and an always-on-top Windows taskbar obscures some of that info. Is there a way, programatically, that I could turn off the always-on-top property of the Windows taskbar for the duration of my application, and then restore it to its original property setting as my application is closing?I know that I could just simply advise the user to go to the Control Panel, select display, etc. etc., and have him change the taskbar setting before and after using my application, but surely there is a programatic way to accomplish the same? I'm adding this postscript a day or so later. I've noticed that setting the TopMost property of my startup form (and setting the Size property to be large enough) will cover the Windows taskbar as desired. However, this is not useful to me. I want to be able, later in the program, to use the Show method of a DialogBox that keeps the DialogBox on top of the StartUp form even when I put the focus back on the startup Form (basically I want the user to be able to click on an item on the DialogBox, then click on an item on the startup Form, then click again back on the DialogBox, and so on, without the Dialog Box ever disappearing behind the startup Form). So the TopMost property of the startup Form doesn't help me, since it would hide the DialogBox as soon as the DialogBox loses focus. I would really prefer to issue a command, as mentioned above, that turns off the TopMost property of the Windows taskbar.
View 5 RepliesCombo Box And A Property Grid In A Form?
Dec 15, 2011I have a combo box and a property grid in a form. The combo box contains 2 items. If one item is selected, two properties are listed in the property grid. These properties should have a dropdown that contains a list of items. I have two string arrays that contain the values for these properties. Can I use one TypeConverter that inherits StringConverter for these lists to be displayed in two different properties? That is, with one TypeConverter class, can I populate both the lists? I will also have to do the same with the other items in the combo box.
View 2 RepliesMultiline Drop Down In Property Grid?
Jun 9, 2010When you drop down the Text property for a label you get a box that allows text entry spanning multiple lines.My question is how do i use this feature in my own control properties?
View 2 RepliesProperty Grid Collapsable Sections
Sep 20, 2010The only thing I am coming up with in my searches is stuff to do with expandable type converters, and all of that documentation is a bit over my head as trying all the examples is failing horribly. I would assume that there is an easier way to go about this without junking up my code with more stuff I don't understand.[code]Now, variables 1-5 have to go under section1, which is what is going on now. However, I want to group together variables 1-4, then group together variables 5-8, so they have the plus sign and can expand. But I cannot apply another category to any of these as they already have a category. All of the other things I have tried putting in additional "<tryexpand("notgonnawork")> _" sections does exactly that, not gonna work.
View 10 RepliesGrid - How To Set DataField Property By Code In C1flexgrid
Dec 4, 2009I am useing C1FlexGrid and i set the datatable as c1flexgrid's datasource. now i want to map filed of datatable to columns of c1flexgrid by code.
View 1 RepliesUse Property Grid In A Form To Edit Any Type?
Jul 22, 2009I have an App where I'd like to be able to edit any type (font, colour, point etc.) at run time and use any of the .Net default type editors. (e.g., font/ colour picker).
Rather than re-invent the wheel, I decided to use the property grid control.
If I pass an object of, say font, to the grid, it lists all the fields separately, with no option to open the font picker.[code]...
Determine If Property Is Generic List<of T> Via Reflection And Loop List Items
Oct 1, 2009I'm looping all the properties in an object via reflection:
For Each p As PropertyInfo In values.[GetType]().GetProperties()
If p.CanRead Then
'Do stuff
End If
Next
how to determine whether the property in question is a generic List(Of T)? If it is I need to loop the list itself.
I've experimented with GetType and TypeOf but have not managed to get anything working.
To clarify, I want to keep this generic. I do not want to specify the type of T, I need to loop the list items and call the ToString method on each item. T could be one of a number of different types (application specific reference types). Is it possible to do this without specifying types?
(VB.NET 2005 with .Net 2.0)
C# - Add A Service To The Type Descriptor Context Of A Property Grid In .Net?
Apr 13, 2010I have an app that allows the user to choose an image, at design time, either as a straight image, or from an image list.
All cool so far, except that this is not happening from the visual studio property browser, its happening from a property grid that is a part of a type editor.
My problem is, both the image picker (actually resource picker), and the imagelist type converter rely on some design-time services to get the job done. In the case of imagelist, its the IReferenceService and in the case of the resource picker its a service called _DTE.
In the first instance of an edit from the visual studio property browser, I could get a reference to these services but (1) how can I add them to the type descriptor context of my property grid?
It would be better, for future proofing, if I could just copy a reference to all of the services in the type descriptor context. (2) Where does the property browser get these services from in the first place?
ETA: I still don't know how to do it, but I now know it is possible.
(1) Sub-class control and add a property whose type is an array of buttons.
(2) Add it to a form.
(3) Select the new control on the design service and edit the new property in the property browser.
(4) The collection editor dialog pops-up
(5) Add a button
(6) Edit image and image list - the type editor and type converter, respectively, behave as they should.
ETA2: Ok, I'm getting warm. It looks like you do it through the Site property of the property grid. I can create a new site, and pass it the type descriptor context I have a reference to and then it should have all the service. I'll give it a go ...
Setting Property Of A Data Grid View Control?
Nov 15, 2010I am using VB 2008...
On my form I have a "Combobox1" that pulls a list from an access table. I also have a "DataGridView1" that pulls data from another access table.
I am trying to set the "DataSource" property of the "DataGridView1" after clicking a button, which pulls the "Text" property from the "ComboBox1".
ComboBox1.Text will always equal DataGridView1.DataSource as a text string.
I researched the Get/Set command, but it does not make sense to my specific application. I have read countless articles online for weeks, but I have now taken the next step.