When we take ListBox is
TextBox controls both have their own advantages and Disadvantages
TextBox:
-
Advantage: -
User can enter the data at Runtime
Disadvantage: -
It’s not possible to display group of items to the user
ListBox:
-
Advantage: - We can display
group of items to user
Disadvantage: -
User can’t enter any data at runtime
ComboBox is the
combination of both TextBox & ListBox controls In ComboBox control, user can enter the
data at run time and also we can display group of items to the user
Properties and Methods with ComboBox Class
SNO
|
Property and
options
|
Type
|
Description
|
01
|
Items
(Collection)
|
Object
Collection Class
|
Stores
all the elements in the form of collection and each element is identified
using index value
|
02
|
DropDownStyle
Simple
DropDown
(Default)
DropDownList
|
enum
|
Simple:
ComboBox looks like TextBox and ListBox, user can enter any data at runtime
and also can select any item in the list
DropDown:
ComboBox appearance does not change, user can enter any data at runtime and
also can select any item in the list
DropDownList:
ComboBox appearance does not change, user cannot enter any data at runtime
but can select any item in the list
|
03
|
MaxDropDownItems
|
int
|
Used
set a value that how many items should be displayed to the user in drop down
list
|
04
|
Sorted
True
False(Default)
|
bool
|
True: Items are
arranged in the alphabetical order
False: Items are not
arranged in the alphabetical order
|
Properties at Run Time:
-
SNO
|
Property and
options
|
Type
|
Description
|
01
|
SelectedItem
|
object
|
Sets
or gets the item value selected
|
02
|
SelectedIndex
|
object
|
Sets
or gets index value of the item selected
|
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