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Combo box
A ComboBox control allows a user to select an item from a dropdown list or directly enter text, and combines the functionality of a text box and list box. The document discusses adding items to a ComboBox at design time using the Item property and adding buttons at runtime. It also describes how to avoid errors when getting the selected item by checking that the SelectedIndex is not -1.
Combo box
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- 2. ComboBox A ComboBox controlis a combination of a TextBox and a ListBox control
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- 4. Add ComboBox Item property press ... Button type White, Red, Black & Yellow Add items from Design window
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- 6. You can addsame items at run-time Another method for adding items Add items by Code
- 7. Add 1 Buttonand Fix it
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- 9. Sb could beanything else like X, Y or Z
- 10. Add another Buttonand Fix it
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- 12. Double click onButton2 and type yellow phrase
- 13. Add GroupBox, Buttonand TextBox
- 14. Run Time TextBox Willhave the same value as ComboBox
- 16. Error If there isno selected item ComboBox1.SelectedIndex will be -1 and this will produce an Error ComboBox1.Items White Red Black yellow ComboBox1.SelectedIndex 0 1 2 3 Dim X As String =ComboBox1.Items(ComboBox1.SelectedIndex) TextBox1.Text = X
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