Property Attribute Overloaded 11 Of 11 DefaultValue
Jan 18, 2012[Code]...
Why is the first line not correct? What it wants is a System.Type and a System.String but refuses to work.
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Re: System.ComponentModel.DefaultValue Attribute?
Sep 16, 2009When to use this attribute to set a defaultvalue?Mainly, does the initial value need to be set in a PUBLIC NEW SUB as per the response from forum user Michal Burger in this thread?
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.NET Custom Property Attribute?
Mar 6, 2010How can I shift the GET-implementation of a Class property to a / using a custom attribute? (I've added instantation vars (classname, propertyname) to the attribute, however I'd rather have these automatically fetched ofcourse.)
Public Class CustomClass
<CustomAttributeClass(ClassName:="CustomClass", PropertyName = "SomeProperty")> _
Public Property SomeProperty() as String
Get() as String
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Color Property On Custom Attribute?
Aug 4, 2010i wrote a custom attribute and got the following Color property that I want the user to be able to indicate the color property in the attribute on a class:
Private _ColumnColor As System.Drawing.Color
Public Property ColumnColor() As System.Drawing.Color
Get
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Change The TypeConverter Attribute Of A Property At Runtime?
Dec 20, 2011I have a class created for use with the PropertyGrid control in a VB.Net application. One of the properties of the class is:
Private _someProp As String
<Browsable(True), _
BindableAttribute(False), _
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Store And Then Raise Event In Property Of Attribute
Apr 9, 2009I think know how to do this in C# but I'm having syntax trouble in VB.NET because I need to take advantage of the 'handles' event stuff. I have different events that I somehow (probably delegate) need stored in a property of an attribute (I just add an attribute to a property linking to the corresponding event).
E.g.
<BindEvent(EventThing)>_
Public ReadOnly Property IsTrue() As Boolean
Get
Return True
End Get
End Property
They need to be events so that other programmers can use the VB.NET handles keyword on methods.
Public Delegate Sub TestEvent(ByVal sender As Object, ByVal e As Object)
Public Event E As TestEvent
Public Sub Test() Handles E
End Sub
These properties are already raising a general event, which I am catching, determining the related property and thus getting the related attribute (and delegate/event). I want to then raise the event that's related. If I just use a delegate tied to the particular event that won't raise other handlers will it? I also want to avoid having to write a sub for each property that just uses Raise Event on the event type if possible as this seems redundant.
E.g. avoid:
Public Event E As TestEvent
Public Sub CallE(ByVal sender As Object, ByVal e As Object)
RaiseEvent E(sender, e)
End Sub
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C# - From A UITypeEditor, Retrieve An Attribute Applied To The Parent Of A Property In .net?
Jan 20, 2010Consider this scenario:
Class MyClass
Property SubProp1
End Property
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Next, I put an instance of MyButton into a property grid, expand property MC and edit SubProp2.From the type editor for SubProp2, I want to get hold of the attribute applied to property MC.Looking at the context,PropertyDescriptor.ComponentType, we arrive at Type: MyClass.If i look at the attributes applied to MyClass, though, it will only return the attributes applied directly to MyClass, and not the extra attribute applied to the property MC.
VS 2005 - Setting Browsable Attribute Of Property At RunTime
Mar 24, 2009I 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).
View 9 RepliesAn Attribute Needed For A Property To Instantly Show Changes In DESIGN View
Feb 15, 2010I have code for a custom DateTimePicker in this thread.>> Do I need to add an attribute to the properties to instantly show changes in design view please
View 8 RepliesAssign Value To Property Of A Class Having Pairs With Attribute Names And Values
Jun 21, 2010I have valued pairs, attributes names and values in one hand, and I have an object with attributes. I need to set the values of those attributes. I need something like [code]
View 1 RepliesC# - Applying Attribute To Property In Business Object Such That Column Isn't Visible After Databind?
Dec 29, 2011I was just wondering if it is possible to apply an attribute to a property within a business object (MyBusinessObject) such that after the DataSource of a grid is set to a List(Of MyBusinessObject), the visible property of the column will automatically be false. For example:
myGrid.DataSource = New List(Of MyBusinessObject)
Public Class MyBusinessObject
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Deserializing XML Into Simple .NET Class - Cannot Populate Property From Root Node Attribute
Feb 17, 2010I have a simple class that I trying to populate from an XML document. The XML file has an attribute called TrackingID in the root node which I would like to get as a property. For some reason, when I deseralize the class, the TrackingID is null. Everything else populates fine. I have tried various attributes on the TrackingID property with no luck.
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C# - RefreshProperties Attribute At Class Level In .net, Winforms + Incorrectly Refreshing Property Grid?
Feb 15, 2010I had a strange problem editing a class in the property grid whereby the property grid would refresh incorrectly.I managed to reduce the problem down to a class with just two properties. I've included the code at the end to ease explanation.It basically boils down to a class with two properties. The first of which is expandable (a font)The class itself is expandable and also implements the CreateInstance method in the type converter.To see the problem, expand the font, edit, say 'Bold', and tab away. Two problems happen:
(1) The second property jumps up and ends up in the expanded font property.
(2) The '-' sign of the expanded font changes to a '+'.
The problem goes away by attaching ResfreshProperties(RefreshProperties.All) to the class. That's great, but I'd like to understand how it fixed the problem. I've had a look in reflector and can't find any examples of RefreshProperties being attached at the class level.
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DefaultValue As Today's Date?
Dec 27, 2010I'm using visual studio. I would like to change <DBNULL> default value of table date column into Today Date. I have try with lot of strings, but could not get right value. My goal is when I will create new record, column for date will take today's date.
View 2 RepliesSet A Font Properties DefaultValue?
May 23, 2007How would I set a Font Properties DefaultValue.
I am currently using:
Dim f as Font = New Font("Tahoma", 8.25!)
then in the property:
<DefaultValue(GetType(Font), "f")>
But the property defaults to "Franklin Gothic Medium" when I rightclick it and select Reset.
Asp.net - Setting DefaultValue Of UpdateParameter Gives Error
Jul 22, 2011I'm using the following snippit of code to update an entry:
Protected Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles button1.Click
With SqlDataSource1
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Reading 'object-attribute-attribute Value' Triples From Column-based CSV Files
Nov 27, 2011here any algorithms/pseudocode for reading/parsing 3-column csv data and determining unique objects/attributes/values?
example data:
john,height,1.75
george,age,21
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i have already implemented a solution of my own but it's too slow and i can't find any relevant literature on the internet.
Unrecognized Attribute 'targetFramework Note That Attribute Names Are Case-sensitive?
Nov 10, 2011Possible Duplicate: Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive
I am using window xp and iis 5.1 to run the application.
error is occurred Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive.
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'SSLAccessFiltercannot' Be Used As Attribute Because It Does Not Inherit From 'System.Attribute'
Feb 2, 2012I get an error when I try to build my project.'SSLAccessFiltercannot' be used as an attribute because it does not inherit from 'System.Attribute'. [code]
View 1 RepliesWhat's An Example Of An Overloaded 'And' Operator
Nov 21, 2010So Google's not a good choice for looking up examples for overloaded operators like "And" or "Or", because it tries to parse them as operators to the search query itself. MSDN also provides no examples of how to implement an overloaded And operator, so I'm not certain how to properly overload it for my project.Does anyone have an example of "And" at minimum? "Or" or "Xor" (or any others) would be a bonus. I'm not certain if I need to overload these operators in my objects just yet, as I'm still building them out and haven't planned beyond just yet. But having examples around that might get indexed by Google will probably help save the sanity of a lot of people...
View 2 RepliesClass That Contains Overloaded Methods?
Jul 16, 2011In this project I am making a grade calculator; I am modifying an existing code I have to have the following characteristics: I need to modify the DetermineGrade method so that it accepts the maximum number of points that can be earned on both tests (currently, the max number of points is 200: 100 points per test). For an A grade, the student must earn at least 90% of the total number of points. For a B, the student must earn at least 80%. For a C, at least 70%. For a D, at least 60%. If they earn less than 60% of the total points, then grade is F. Here is the exisint code I have for the DetermineGrade method specifically:
Public Sub DetermineGrade()
Dim intTotal As Integer
intTotal = _intScore1 + _intScore2
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Combining 20 Overloaded Subs Into One?
Jan 31, 2012I'm working with a third-party library interfacing to an old database system. There's a method - CallProg that calls a "stored procedure" (for lack of a better translation - any Pick users in the crowd?). However, instead of doing something like this:
Public Sub CallProg(ProgName, ParamArray ProgArgs() As String)
...
End Sub
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How To Come Axwebbrowser.Navigate() Is Not Overloaded
Mar 11, 2011I have two computer. Both have VS2003, but on one of them, Navigate() is overloaded. Its either Navigate(string) or Navigate(string, ref obj, ref obj..and so on). But on my other computer, Navigate only has Navigate(string, ref obj, ref obj....)
View 1 Replies.net - Adding An Overloaded Constructor To A WinForm?
Oct 14, 2010I have created a dialog as a winform and am calling that winform like this:
Dim dlgEditChangeOrder As New dgEditChangeOrder
Dim dlgResult As DialogResult
dlgResult = dlgEditChangeOrder.ShowDialog
pretty simple. I want to be able to set the visiblility of a control on the win form when the win form is called. I would like to do this as a constructor so I could write the following. Dim dlgEditChangeOrder As New dgEditChangeOrder(visibleIsTrue)
Can someone give me the contructor code to make this happen? The reason I am concerned is I dunno if its legal to do this inside a winform since the winform is loaded bby the precreated IntializeComponent() function
.net - Alias In Function Declaration Overloaded?
Feb 24, 2009I have some VB6 code that I am converting to VB.net and came across this section
Declare Function TmSendByLen Lib "tmctl.dll" Alias "TmSendByLength"(ByVal id As Integer, ByRef msg As Any, ByVal blen As Integer) As Integer
'snip'
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I have not come across the Alias term before but I can guess what it does. What I am unsure of is the reasoning behind overloading the alias. If that is what is happening.I need to create overloads for the TmSendByLen function as the 'As Any' is not supported in VB.net so I am not sure if I should just remove the alias or if I should leave it in place.
Generics Mixed With Overloaded Event?
May 24, 2011I am looking for a little expert design insight.I am trying to save an overloaded property from a generic class.
Base Class
Public MustInherit Class BaseEvent
Public MustOverride ReadOnly Property IsWorkCalendar() As Boolean[code]....
Make Specialized/overloaded Generics?
Jan 26, 2012I tend to loath repetition in code, so when I come across a problem where the only different is types I tend to use generics. Coming from a C++ background I find vb.net's version to be rather frustrating, I know C++ has template specialization and I guess vb.net does notso what I have is a set of routines that do the exact same code regardless of type being passed.something like this
Public Sub decision(Of T)(ByVal a As T, ByVal b As Integer)
If b > 10 then
gt(a)
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Overloaded Constructor In Abstract Class
Nov 19, 2010I have an abstract class in vb.net with two subclasses. In the abstract class I have a constuctor that looks like this:[code]I would like to create a second constructor that doesn't take any arguments and just initializes the args to default values.[code]When I attempt to create a new subclass using the second constructor the compiler complains that I'm missing two args to the constructor.Is there a reason I can't overload the constructor in the abstract class?
View 2 RepliesSearch Routine Causes An Overloaded Exception?
Jan 11, 2010As some of you may know i been working on an inventory program, for this part of the app the user enters an ID number and clicks search, the app searches for the ID and shows if it exists or not.
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.net - Entity Framework Parameterized/Overloaded Constructors?
Mar 17, 2011In my previous application using Linq2SQL I was able to overload constructors with parameters by doing this:
Namespace CoreDb
Partial Public Class Accomplishment
Public Sub New(ByVal accomplishmentTypeID As Object, ByVal description As String, ByVal title As String, ByVal applicableDate As DateTime, ByVal lastUpdatedBy As String)
[code]....
Basically using a partial class off the object, sharing the namespace of the .dbml file and calling the default constructor and then doing additional stuff. So then in my code I could do something like:
Dim accomplishment As New Accomplishment(id, description, title, applicableDate, lastUpdatedBy)
This seems to no longer work in Entity Framework as there is no default constructor to call.Does this no longer work? And if so what is a good alternative to implementing something like this?