hi again :)
i have problem with finding cyrilic words in my txt file...words in txt file are arranged like this:
one један
two два
three три
etc...
before word "one" and after word "један" there is blank space...
so problem starts in button3_click... what ever i type in texbox3 result is the same,it wont work...actualy it cant find the word... here is whole code:

Public Class Form1
    Dim rec As String
    Dim broj_linija As Integer
    Dim pozicija_srpske_reci, pozicija_engleske_reci,
        pocetak_srpske_reci, kraj_srpske_reci,
        pocetak_engleske_reci, kraj_engleske_reci As Integer
    Dim recnik(), linija,
        linija2, srpska_rec, engleska_rec As String
    Dim putanja As String


    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        If My.Computer.FileSystem.FileExists("C:\Users\Slobo\Desktop\eng-srp recnik\ss.txt") Then
            recnik = System.IO.File.ReadAllLines("C:\Users\Slobo\Desktop\eng-srp recnik\ss.txt", System.Text.Encoding.GetEncoding(1251))
        Else
            MsgBox("Ne postoji tekstualni dokument")
            Close()
        End If
    End Sub

    Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
        Button2.Enabled = False
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Button2.Enabled = True
        pozicija_engleske_reci = 0
        rec = TextBox1.Text
        broj_linija = recnik.Length
        For i = 0 To broj_linija - 1
            If InStr(recnik(i), rec) = 1 Then
                pozicija_engleske_reci = i
            End If
        Next
        If pozicija_engleske_reci = 0 Or TextBox1.TextLength = 0 Then
            MsgBox("Ne postoji trazena rec!")
            GoTo A
        End If
        linija = recnik(pozicija_engleske_reci).ToString
        pocetak_srpske_reci = InStr(linija, " ") + 1
        kraj_srpske_reci = InStrRev(linija, " ")
        srpska_rec = Mid(linija, pocetak_srpske_reci, kraj_srpske_reci - pocetak_srpske_reci)
        TextBox2.Text = srpska_rec
A:
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        putanja = "C:\Users\Slobo\Desktop\eng-srp recnik\izgovor\" + srpska_rec + ".wav"
        My.Computer.Audio.Play(putanja)

    End Sub

    Private Sub TextBox3_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox3.TextChanged
        Button4.Enabled = False
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        Button4.Enabled = True
        pozicija_srpske_reci = 1
        rec = TextBox3.Text.ToString
        broj_linija = recnik.Length
        For i = 0 To broj_linija - 1
            If InStr(recnik(i), rec, CompareMethod.Text) = 1 Then
                MsgBox("1")
                pozicija_srpske_reci = i
            End If
        Next
        If pozicija_srpske_reci = 1 Or TextBox3.TextLength = 0 Then
            MsgBox("Ne postoji trazena rec!")
            GoTo A
        End If
        linija2 = recnik(pozicija_engleske_reci).ToString
        pocetak_engleske_reci = 1
        kraj_engleske_reci = InStr(2, linija, " ")
        engleska_rec = Mid(linija, pocetak_engleske_reci, kraj_engleske_reci - 1)
        TextBox4.Text = engleska_rec
A:
    End Sub

    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        putanja = "C:\Users\Slobo\Desktop\eng-srp recnik\izgovor\" + engleska_rec + ".wav"
        My.Computer.Audio.Play(putanja)
    End Sub
End Class

here's the solution :)

Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        Button4.Enabled = True
        pozicija_srpske_reci = 1
        rec = TextBox3.Text
        broj_linija = recnik.Length
        For i = 0 To broj_linija - 1
            razmak = InStr(2, recnik(i), " ")
            If InStr(razmak, recnik(i), rec) = razmak + 1 Then
                pozicija_srpske_reci = i
                Exit For
            End If
        Next
        If pozicija_srpske_reci = 0 Or TextBox3.TextLength = 0 Then
            MsgBox("Ne postoji trazena rec!")
            GoTo A
        End If
        linija = recnik(pozicija_srpske_reci).ToString
        pocetak_engleske_reci = 1
        kraj_engleske_reci = InStr(2, linija, " ")
        engleska_rec = Mid(linija, pocetak_engleske_reci, kraj_engleske_reci - 1)
        TextBox4.Text = engleska_rec
A:
    End Sub

    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        putanja = "C:\Users\Slobo\Desktop\eng-srp recnik\izgovor\" + engleska_rec + ".wav"
        My.Computer.Audio.Play(putanja)
    End Sub
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