DataGridViewComboBoxColumn.Items Property

 

Gets the collection of objects used as selections in the combo boxes.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public DataGridViewComboBoxCell.ObjectCollection Items { get; }

Property Value

Type: System.Windows.Forms.DataGridViewComboBoxCell.ObjectCollection

An DataGridViewComboBoxCell.ObjectCollection that represents the selections in the combo boxes.

Exception Condition
InvalidOperationException

The value of the CellTemplate property is null.

This property returns the value of the Items property of the DataGridViewComboBoxCell returned by the CellTemplate property.

The Items or DataSource properties are used to populate the selections of the combo boxes.

If strings are added to Items, then the ValueMember and DisplayMember properties do not need to be set because each string added will be used for both value and display.

System_CAPS_noteNote

DataGridViewComboBoxColumn does not support the use of multiple items with identical display values.

If the DataSource property is set, then Items cannot be used.

The following code example demonstrates how to use a DataGridViewComboBoxColumn to aid in entering data into the TitleOfCourtesy column. The Items property is used to populate the combo box drop-down list with a selection of titles. This example is part of a larger example available in the DataGridViewComboBoxColumn class overview topic.

private static void SetAlternateChoicesUsingItems(
    DataGridViewComboBoxColumn comboboxColumn)
{
    comboboxColumn.Items.AddRange("Mr.", "Ms.", "Mrs.", "Dr.");
}

private DataGridViewComboBoxColumn CreateComboBoxColumn()
{
    DataGridViewComboBoxColumn column =
        new DataGridViewComboBoxColumn();
    {
        column.DataPropertyName = ColumnName.TitleOfCourtesy.ToString();
        column.HeaderText = ColumnName.TitleOfCourtesy.ToString();
        column.DropDownWidth = 160;
        column.Width = 90;
        column.MaxDropDownItems = 3;
        column.FlatStyle = FlatStyle.Flat;
    }
    return column;
}

.NET Framework
Available since 2.0
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