Dim str As String= "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Users\dv rrxaI600 007\Desktop\123.MDB;Persist Security Info=False" Dim mc = System.Text.RegularExpressions.Regex.Matches(str, "(?<=Data Source=).*?(?=;)") If mc.count > 0 Then msgbox(mc(0).value) End If