I'm helping a colleague develop a "catch all" type error handler for some controls his application. What he wants to do is pass the object that has the error, and the type of that object, such a TextBox or ComboBox, and then call the DirectCast method within his handler to properly address the Text attribute within it. In general, the me...
Public Enum Fruit Red_Apple = 1 Oranges Ripe_Banana End Enum Private Sub InitCombosRegular() Dim d1 As New Dictionary(Of Int16, String) For Each e In [Enum].GetValues(GetType(Fruit)) d1.Add(CShort(e), Replace(e.ToString, "_", " ")) Next ComboBox1.DataSource = d1.ToList ComboBox1.DisplayMember = "V...
How come this is not a valid DirectCast: Public Sub FB(OF T0 As IGH_Goo, T1 As IGH_Goo) _ (ByVal A As DataTree(Of T0), _ ByVal B As DataTree(Of T1)) Dim val_A As T1 = DirectCast(A.FirstItem, T1) End Sub whereas this is: Public Sub FB(OF T0 As IGH_Goo, T1 As IGH_Goo) _ (ByVal A As DataTree...
Sometimes I have to implement an interface or inherit a virtual (MustInherit) that the base method expects an object, whilst I know that the value I will be passing will always be an Integer for example. What should be the best performance from the examples below: Public Sub DoSomething(ByVal obj As Object) 'option 1: Dim x As ...
i have 1 a.master page and 1 b.aspx with its b.aspx.vb page. I have the following property in the a.master.vb Public Property Page_Title() As String Get Return title_div.InnerHtml End Get Set(ByVal value As String) title_div.InnerHtml = value End Set End Property in the b.aspx.vb page i have DirectCast...
Whenever Resharper encounters code like this: (treeListNode.Tag as GridLine).AdvertiserSeparation = 5; it presents you with a possible fix (since treeListNode.Tag as GridLine might be null). It says: 'Replace with Direct Cast', which turns the code into the following: ((GridLine) treeListNode.Tag).AdvertiserSeparation = 5; This is...
This has probably been asked before, but if it has, I can't find it. Does C# have an equivalent to VB.Net's DirectCast? I am aware that it has () casts and the 'as' keyword, but those line up to CType and TryCast. To be clear, these keywords do the following; CType/() casts: If it is already the correct type, cast it, otherwise look f...
Ever since I moved from VB6 to VB.NET somewhere in 2005, I've been using CType to do casting from one data type to another. I do this because it is simply faster to type, used to exist in VB6 and I do not know why I have to be using DirectCast if there is apparently no difference between them. I use TryCast once in a while because I und...
I am an experienced C/C++/C# programmer who has just gotten into VB.NET. I generally use CType (and CInt, CBool, CStr) for casts because it is less characters and was the first way of casting which I was exposed to, but I am aware of DirectCast and TryCast as well. Simply, are there any differences (effect of cast, performance, etc.)...