Searching for things in a string or textbox

I have an Array of strings, I am using a Regex statement to split each word out of it and dynamicly put each 1 into the array.

So "Hello world" would be

s(0) = "Hello"
s(1) = "world"

After the code runs. Now my question is, how could I search a textbox or string with the statement WITHOUT knowing how many strings will be created within the array and then returning how many were found of out the total number of strings within the array.

surely you would have created the array using the redim preserve and therefor already know the number of array elements after that it's a simple for loop using instring function to see if you have a match

If you use an Icollection, then you can search through the array with contains.

You can use add, remove, clear without redimming the array and so on. It's a VERY nice feature !

HTH

Bjorn

to check how many words there are / build a string array , you can do this :

VB Code:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
 
        If Not TextBox1.Text.IndexOf(" ") = -1 Then
            Dim strString() As String = TextBox1.Text.Split(" ")
            MessageBox.Show("The count of words in the textbox is: " & TextBox1.Text.Split(" ").GetUpperBound(0))
        End If
    End Sub

you can do the same to count the occurences of a particular string in the textbox , eg:

VB Code:

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        If Not TextBox1.Text.IndexOf("some-text") = -1 Then
            MessageBox.Show("the string , [some-text] appears: & " & TextBox1.Text.Split("some-text").GetUpperBound(0) & " times in textbox1")
        End If
    End Sub