First create a function like fun1() use this funtion [private\public\sub] fun1 ............ ....... ..... end sub

for that check your connection string :) :)

Here we set the ComboBox Property DropDownStyle=DropDownList after setting the combobox property user only select a value from this list ,user can't write any in this combobox. If user want to add more values in this list, user set the combobox property "Items", Here user can write our values :)

For displaying current month in vb.net we use Month(ToDay) It display current month only :-D