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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.

ExceptionCondition
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.

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;
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0

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