Temp = YourStringToCountOccurrence.IndexOf(TargetSingleCharacterToCount, Temp2 + 1)Įxample of using the function: Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1. Len(length): this function is used to calculate the length of the string.Its offers the facility to return a number of letters, numbers, or symbols.
Now, this is a handy function to solve the OP's problem: Public Function CountOccurrence(ByVal YourStringToCountOccurrence As String, ByVal TargetSingleCharacterToCount As String) As Int32 In this topic, you will learn about, String functions that are supported by Visual Basic.
#Visual basic string function code
Here is the direct code that solves the OP's problem: Dim str As String = "the little red hen" The syntax for the Replace() function is as follows: Replace(string, searchtext, replacetext) string represents the string in which to perform the search and replace. If InStr(Start, myInput, Search, m圜ompareMethod) > 0 Then Return True Visual Basic provides the Replace() function for the purposes of replacing some text in a string with some other text. You can also use Visual Basics string-manipulation functions to work with strings. Function inStB(myInput As String, Search As String, Optional Start As Long = 1, Optional m圜ompareMethod As Long = CompareMethod.Text) As Boolean The names of some of the methods of the String class may lead you to. I need this function often and this makes my code cleaner. While I am here, I would like to shill my inStB function, which, instead of returning a count of a string, it will simply return a boolean if the search string is present. str="the little red hen"Ĭount=inStC(str,"e") 'count should equal 4Ĭount=inStC(str,"t") 'count should equal 3 One thing I like is that it is compact to use example. Decimal.TryParse (ListBox2.Items (i).ToString, decprice) You have a few issues with your program that need to be resolved. decprice CDec (ListBox2.Items (i).ToString) or the TryParse method for Decimal. You can use the type conversion function CDec. Return UBound(Split(myInput, Search, m圜ompareMethod)) You need to convert the value from a String to a Decimal. If InStr(1, myInput, Search, m圜ompareMethod) = 0 Then Return 0
Len (string): Returns an integer that contains the number of characters in a. Only thing missing is the ability to start search from a different "Start" Function inStC(myInput As String, Search As String, Optional m圜ompareMethod As Long = CompareMethod.Text) As Long Lcase (string) :Returns a string or character converted to small letters. Most VB string-handling functions return a string, although some return a number (such as the. It is not the most memory efficient but it is very simple to understand, supports multiple compare methods, is only 4 lines, is fast, mostly works in VBA too, will find not just individual characters but any search string (I often search for VbCrLf (s)). VB has numerous built-in string functions for processing strings.