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ComboBox.DataSource Property

Gets or sets the data source for this ComboBox.

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

public Object DataSource { get; set; }

Property Value

Type: System.Object
An object that implements the IList interface, such as a DataSet or an Array. The default is null.

A data source can be a database, a Web service, or an object that can later be used to generate data-bound controls. When the DataSource property is set, the items collection cannot be modified.

The following example uses the DataSource property to display an array of weekdays in a ComboBox.

using System.Windows.Forms;

namespace ComboBox_DataSource_Sample
    public partial class Form1 : Form
        public Form1()
            // Initialize an array with data to bind to the combo box.
            string[] daysOfWeek =
                new string[] { "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday" };

            // Initialize combo box
            ComboBox comboBox = new ComboBox();
            comboBox.DataSource = daysOfWeek;
            comboBox.Location = new System.Drawing.Point(12, 12);
            comboBox.Name = "comboBox";
            comboBox.Size = new System.Drawing.Size(166, 21);
            comboBox.DropDownStyle = ComboBoxStyle.DropDownList;

            // Add the combo box to the form. 

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