Take a look at this MSDN article on VB extension Methods.Applying it will lead to something like this. Imports System.Runtime.CompilerServices Imports System.Text.RegularExpressions Module Module1 Sub Main() Dim myString As String myString = "1955" Console.WriteLine(myString & " is Year =" & myString.IsYear) myString = "3955" Console.WriteLine(myString & " is Year =" & myString.IsYear ...

The thing is, in VB classic, there was just And and Or, which were non-short-circuiting. I think I'm right in saying that the first betas of VB.NET actually changed the behaviour of these operators - there was uproar, so they were changed back and AndAlso and OrElse (short-circuiting) were introduced. I can only imagine the alternative names ...

2016年4月19日 · VB.Net Initialising an array on the fly. 1. Initialise an VB .NET String Array. 4. C# to VB.NET array ...

Here are some examples (VB.Net) ' This statement prints TruePart, because the first argument is true. Console.WriteLine(If(True, "TruePart", "FalsePart")) ' This statement prints FalsePart, because the first argument is false. Console.WriteLine(If(False, "TruePart", "FalsePart")) Dim number = 3 ' With number set to 3, this statement prints ...

2017年12月17日 · I have this: If String.IsNullOrEmpty(editTransactionRow.pay_id.ToString()) = False Then stTransactionPaymentID = editTransactionRow.pay_id 'Check for null value End If Now, when editTransacti...

2013年10月4日 · The first problem is that you are appending the child by calling ProfileList.DocumentElement.AppendChild.That method will append the child to the document element, which is the root-level Profiles element.

2010年11月16日 · You're almost there. The argument of Where needs to be a function, so your code should look like this:. Dim t As List(Of MyType) t = GetMyTypes() Dim result = t.Where(Function(x) x.AccountNumber = "123")

2009年12月11日 · I am assuming that you are wanting to add items to a ComboBox on an Windows form. Although Klaus is on the right track I believe that the ListItem class is a member of the System.Web.UI.WebControls namespace.

2013年3月26日 · How to open a file using openfiledialog The below is my code: Dim Fs As StreamReader With OpenFD .FileName = "" .Title = "Open Text File" .InitialDirectory = "c:\" ...

2015年1月21日 · How would you define a Nullable type property in Visual Basic. How can I leverage the HasValue propterty in the Setter ? Thanks.