I want bind data from sql db into combo box in vb??

Question

SQL = "select Student_branch from Student_personal_schooling"

execComDB(SQL)

adapter.SelectCommand = cmd

Dim dt As New DataTable

adapter.Fill(dt)

For Each dr As DataRow In dt.Rows

cmbbranch.Items.Add(dr("Rollno"))

Next

cmbbranch.ValueMember = "Student_branch"

cmbbranch.DisplayMember = "Student_branch"

cmbbranch.DataSource = dt

 

i tried this code but no working..