What is the best way to find a String without space ?

[SamDsouza]

Hello

I am trying to look out for a specific string which exists WITHOUT SPACE but does not match ?

"theQuickBrownfoxjumpedoverthelazydog"

How can i get only Brown from above sentence

Dim sentence As String = "theQuickBrownfoxjumpedoverthelazydog"
TextBox1.Text = sentence

'Now when i use below
If TextBox1.Contains("Brown")  Then ' it is not Matching or not able to detect

So what would be simple way to get the desired output ie Brown

Thanks
SamD
173

[jdelano]

You need to use the .Text property of the textbox (This is a .net framework 4.8 project)

       Dim sentence As String = "theQuickBrownfoxjumpedoverthelazydog"
       TextBox1.Text = sentence

       'If sentence. Contains("Brown") Then
       '    MsgBox("found it", MsgBoxStyle.Information, "variable")
       'Else
       '    MsgBox("Nope", MsgBoxStyle.Information, "variable")
       'End If

       If TextBox1.Text.Contains("Brown") Then
           MsgBox("found it", MsgBoxStyle.Information, "textbox")
       Else
           MsgBox("Nope", MsgBoxStyle.Information, "textbox")
       End If

[dday9]

There are a few ways.

One way is to use String.IndexOf (documentation) to check if the index of of the first occurrence of a specific value. This method returns -1 if the value is not found.

Another way is to use String.Contains (documentation) which jdelano has already provided you an example of.

Yet another way is to use Regular Expressions (aka RegEx). RegEx applies a match pattern to a String an returns a series of matched values. RegEx is extremely flexible and is probably overkill in this situation, but I wanted to bring it up nonetheless.

Here are examples of using each:

Private Function IndexOfMatch(valueToSearch As String, valueSearchingFor As String) As Boolean
    Dim index = valueToSearch.IndexOf(valueSearchingFor)
    Dim isMatch = index > -1
    Return isMatch
End Function

Private Function ContainsMatch(valueToSearch As String, valueSearchingFor As String) As Boolean
    Dim isMatch = valueToSearch.Contains(valueSearchingFor)
    Return isMatch
End Function

Private Function RegExMatch(valueToSearch As String, valueSearchingFor As String) As Boolean
    Dim isMatch = RegEx.IsMatch(valueToSearch, valueSearchingFor)
    Return isMatch
End Function

Fiddle: https://dotnetfiddle.net/YGXO7f

[Zvoni]

Didn‘t we have that some weeks ago, where I presented a Regex solution?

[SamDsouza]

jdelano

You need to use the .Text property of the textbox

Oh Yes Need to use .Text property of textbox before .Contains
ie

TextBox1.Text.Contains("Brown")

As this Slipped out of my mind because many times
I define
Dim ContentOftxtBx1 As String = Textbox1.Text
and therefore lead to
ContentOftxtBx1.Contains which ultimately lead to confusion

Zvoni
this is not related to regex for now

dday9
Thanks very much for more options. Wonderful Functions. Really impressed
BTW How will your functions help in what scenario

In Simplicity What would be better Option to use .Text.Contains or the functions you created.

Thanks Everyone
SamD
174

[dday9]

dday9
Thanks very much for more options. Wonderful Functions. Really impressed
BTW How will your functions help in what scenario

You would simply pass the string you want to search in and value you want to search for, e.g.

Dim isMatch = ContainsMatch(TextBox1.Text, "Brown")