Use Color Code in VB.Net

 btn.BackColor =Color .FromArgb (192,192,0)

Find Second Max in SQL

SELECT TOP 1 * From (select Top 2 * from complaint_log ORDER BY s_no DESC)a ORDER BY s_no   

clear ALL textboxes and label

For Each ctrl In Controls
                If TypeOf ctrl Is TextBox Or TypeOf ctrl Is Label Then
                    ctrl.Text = String.Empty
                End If
            Next

How to exploit the SQL Injection Attack

Try ' OR ''=' for user name and password.

CONVERT function gets date from SQL Server DateTime Column

SELECT CONVERT(CHAR(10), (field name), 101) FROM (table name)

Print Character using Asc value

For i = 97 To 122
                k &= "(" & Chr(i) & ")" & vbCrLf
              Label4.Text = k
            Next
            i += 1