VB.NET how can I check if String Contains alphabet characters and .?in case when the answers are all Nos (ascending order only, case sensitive, both characters must be letters and digits only), a simple loop solves the task (C) using asp.net/vb.net 2005. I want to check to see if a string contains any letters or numbers. VB.Net - How To Check If Folder Contains Files Or Folders Using Visual Basic.Net.Private Sub ButtonCheckClick(sender As Object, e As EventArgs) Handles ButtonCheck.Click. Dim path As String. The space function is used to Return a string containing the specified number of blank spaces.On the other hand, the Lcase function converts all the characters of a string to small letters. For Example - This example defines all the above function. How to check null String in vb.net ? VB.NET uses the keyword Nothing for null values. Dim str As String Nothing If str Nothing Then MsgBox("String is Null") End If.
Checks if a given string contains any of the characters in the passed array of characters. Basically Im trying to make a game, "Guess the person", in vb.net. I have two strings FirstName and LastName which hold the obvious data.What is supposed to happen is, when you click a button it should check if the letter that is on the button is contained in either FirstName or LastName, and if it Determine if a string contains a substring. Dim s As String.To determine if a string contains a substring, check for the return value of 0. searchStr "abc" If InStr(s, searchStr) 0 Then Print "substring not found within s" End If. by using string constructor Dim letters As Char() "H", "e", "l", "l", "o" greetings New String(letters) Console.WriteLine("Greetings: 06 Public Function Contains valueAsString As Boolean Returns a value indicating whether the specified string object occurs within this string.