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With the DataGridViewComboBoxColumn, you can display a column of cells that contain drop-down list boxes. This is useful for data entry in fields that can only contain particular values, such as the Category column of the Products table in the Northwind sample database.

You can populate the drop-down list used for all cells the same way you would populate a ComboBox drop-down list, either manually through the collection returned by the Items property, or by binding it to a data source through the DataSource, DisplayMember, and ValueMember properties. For more information, see ComboBox Control (Windows Forms).

You can bind the actual cell values to the data source used by the DataGridView control by setting the DataPropertyName property of the DataGridViewComboBoxColumn.

Combo box columns are not generated automatically when data-binding a DataGridView control. To use combo box columns, you must create them manually and add them to the collection returned by the Columns property. Alternatively you can use the designer and change a column type to a combo box column and set properties accordingly.

What is the DataGridView

Differences between the DataGridView and DataGrid controls

Highlight of features

Structure of DGV

Architecture Elements

Cells and Bands