DropDownList, html. dropdownlist

DropDownList, html. dropdownlist

DropDownList

1. The Data Source Field Obtained by DataValueField or set to provide values for each list item is bound with a unique identifier, such as the id column.
Use SelectedValue to obtain data that is not visible to the front end of the bound data
Similar to key

2. DataTextField: obtain or set the data source field that provides text content for each list item to bind the field name to be displayed.
After binding, the information displayed in the drop-down list can be seen, obtained using SelectedItem
Similar to value