System.Windows.Forms


.NET Framework Class Library
DataGridViewCheckBoxColumn Class

Note: This class is new in the .NET Framework version 2.0.

Hosts a collection of DataGridViewCheckBoxCell objects.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

Syntax

Visual Basic (Declaration)
Public Class DataGridViewCheckBoxColumn
    Inherits DataGridViewColumn
Visual Basic (Usage)
Dim instance As DataGridViewCheckBoxColumn
C#
public class DataGridViewCheckBoxColumn : DataGridViewColumn
C++
public ref class DataGridViewCheckBoxColumn : public DataGridViewColumn
J#
public class DataGridViewCheckBoxColumn extends DataGridViewColumn
JScript
public class DataGridViewCheckBoxColumn extends DataGridViewColumn
Remarks

The DataGridViewCheckBoxColumn class is a specialized type of the DataGridViewColumn class used to logically host cells that indicate binary state. A DataGridViewCheckBoxColumn has an associated DataGridViewCheckBoxCell in every DataGridViewRow that intersects it. Each cell supplies a user interface (UI) that is similar to a CheckBox control.

The default sort mode for this column type is NotSortable.

Typically, check box cell values are intended either for storage, like any other data, or for performing bulk operations. If you want to respond immediately when users click a check box cell, you can handle the DataGridView.CellContentClick event, but this event occurs before the cell value is updated. If you need the new value at the time of the click, one option is to calculate what the expected value will be based on the current value. Another approach is to commit the change immediately, and handle the DataGridView.CellValueChanged event to respond to it. To commit the change when the cell is clicked, you must handle the DataGridView.CurrentCellDirtyStateChanged event. In the handler, if the current cell is a check box cell, call the DataGridView.CommitEdit method and pass in the Commit value.

Notes to Inheritors When you derive from DataGridViewCheckBoxColumn and add new properties to the derived class, be sure to override the Clone method to copy the new properties during cloning operations. You should also call the base class's Clone method so that the properties of the base class are copied to the new cell.

Example

The following code example demonstrates how to use a DataGridViewCheckBoxColumn to mark which employees are out of the office.

Visual Basic
Private Sub AddOutOfOfficeColumn()
    Dim column As New DataGridViewCheckBoxColumn()
    With column
        .HeaderText = ColumnName.OutOfOffice.ToString()
        .Name = ColumnName.OutOfOffice.ToString()
        .AutoSizeMode = DataGridViewAutoSizeColumnMode.DisplayedCells
        .FlatStyle = FlatStyle.Standard
        .CellTemplate = New DataGridViewCheckBoxCell()
        .CellTemplate.Style.BackColor = Color.Beige
    End With

    DataGridView1.Columns.Insert(0, column)
End Sub
C#
private void AddOutOfOfficeColumn()
{
    DataGridViewCheckBoxColumn column = new DataGridViewCheckBoxColumn();
    {
        column.HeaderText = ColumnName.OutOfOffice.ToString();
        column.Name = ColumnName.OutOfOffice.ToString();
        column.AutoSizeMode = 
            DataGridViewAutoSizeColumnMode.DisplayedCells;
        column.FlatStyle = FlatStyle.Standard;
        column.ThreeState = true;
        column.CellTemplate = new DataGridViewCheckBoxCell();
        column.CellTemplate.Style.BackColor = Color.Beige;
    }

    DataGridView1.Columns.Insert(0, column);
}
C++
private:
    void AddOutOfOfficeColumn()
    {
        DataGridViewCheckBoxColumn^ column = gcnew DataGridViewCheckBoxColumn();
        {
            column->HeaderText = ColumnName::OutOfOffice.ToString();
            column->Name = ColumnName::OutOfOffice.ToString();
            column->AutoSizeMode = 
                DataGridViewAutoSizeColumnMode::DisplayedCells;
            column->FlatStyle = FlatStyle::Standard;
            column->ThreeState = true;
            column->CellTemplate = gcnew DataGridViewCheckBoxCell();
            column->CellTemplate->Style->BackColor = Color::Beige;
        }

        DataGridView1->Columns->Insert(0, column);
    }
Inheritance Hierarchy

System.Object
   System.Windows.Forms.DataGridViewElement
     System.Windows.Forms.DataGridViewBand
       System.Windows.Forms.DataGridViewColumn
        System.Windows.Forms.DataGridViewCheckBoxColumn
Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Platforms

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

Version Information

.NET Framework

Supported in: 2.0
See Also

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