how to get the al information from the brackets of each sin()

[pradeepreddy2007]

hi , I am pradeep.
i wrote a code to get all information with in brackets of each sin() ,which i would like to give as my input to text box.
but i am not able to get it exactly,
for example i write "sin(90*2)+sin(60)+sin(60+(75*2))+sin(50)+sin(20)" in textbox
i need "90*2,60,60+(75*2),50,20" as my out put
here is my code what i wrote ,please modify my code and help me

public class form1 
   Private Sub Button25_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button25.Click
      Dim j As Integer = 0
      Dim startPos As Integer

      Dim parenCount As Integer = 1
      Dim innerLen As Integer = 0
      For j = 0 To TextBox1.Text.Length - 1
         startPos = TextBox1.Text.IndexOf("sin(", j) + 4
         For i As Integer = startPos To TextBox1.Text.Length

            If TextBox1.Text(i) = "("c Then
               parenCount = parenCount + 1
            End If

            If TextBox1.Text(i) = ")"c Then
               parenCount = parenCount - 1
            End If

            If parenCount = 0 Then
               Exit For
            End If
            innerLen = innerLen + 1

         Next i
         MsgBox(TextBox1.Text.Substring(startPos, innerLen))
      Next j
   End Sub
end class

please help me
thanks in advance

[pradeepreddy2007]

please help me its urgent

[dglienna]

A few String.Replace() should work. Get rid of SIN, and the () for each, and add a . after each one