DataGridViewCell.ValueType Property
Definition
Important
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Gets or sets the data type of the values in the cell.
public:
virtual property Type ^ ValueType { Type ^ get(); void set(Type ^ value); };
[System.ComponentModel.Browsable(false)]
public virtual Type ValueType { get; set; }
[System.ComponentModel.Browsable(false)]
public virtual Type? ValueType { get; set; }
[<System.ComponentModel.Browsable(false)>]
member this.ValueType : Type with get, set
Public Overridable Property ValueType As Type
Property Value
A Type representing the data type of the value in the cell.
- Attributes
Examples
The following code example demonstrates the use of this property.
private DataGridView dataGridView1 = new DataGridView();
private void AddColorColumn()
{
DataGridViewComboBoxColumn comboBoxColumn =
new DataGridViewComboBoxColumn();
comboBoxColumn.Items.AddRange(
Color.Red, Color.Yellow, Color.Green, Color.Blue);
comboBoxColumn.ValueType = typeof(Color);
dataGridView1.Columns.Add(comboBoxColumn);
dataGridView1.EditingControlShowing +=
new DataGridViewEditingControlShowingEventHandler(
dataGridView1_EditingControlShowing);
}
private void dataGridView1_EditingControlShowing(object sender,
DataGridViewEditingControlShowingEventArgs e)
{
ComboBox combo = e.Control as ComboBox;
if (combo != null)
{
// Remove an existing event-handler, if present, to avoid
// adding multiple handlers when the editing control is reused.
combo.SelectedIndexChanged -=
new EventHandler(ComboBox_SelectedIndexChanged);
// Add the event handler.
combo.SelectedIndexChanged +=
new EventHandler(ComboBox_SelectedIndexChanged);
}
}
private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
((ComboBox)sender).BackColor = (Color)((ComboBox)sender).SelectedItem;
}
Private WithEvents dataGridView1 As New DataGridView()
Private Sub AddColorColumn()
Dim comboBoxColumn As New DataGridViewComboBoxColumn()
comboBoxColumn.Items.AddRange( _
Color.Red, Color.Yellow, Color.Green, Color.Blue)
comboBoxColumn.ValueType = GetType(Color)
dataGridView1.Columns.Add(comboBoxColumn)
End Sub
Private Sub dataGridView1_EditingControlShowing(ByVal sender As Object, _
ByVal e As DataGridViewEditingControlShowingEventArgs) _
Handles dataGridView1.EditingControlShowing
Dim combo As ComboBox = CType(e.Control, ComboBox)
If (combo IsNot Nothing) Then
' Remove an existing event-handler, if present, to avoid
' adding multiple handlers when the editing control is reused.
RemoveHandler combo.SelectedIndexChanged, _
New EventHandler(AddressOf ComboBox_SelectedIndexChanged)
' Add the event handler.
AddHandler combo.SelectedIndexChanged, _
New EventHandler(AddressOf ComboBox_SelectedIndexChanged)
End If
End Sub
Private Sub ComboBox_SelectedIndexChanged( _
ByVal sender As Object, ByVal e As EventArgs)
Dim comboBox1 As ComboBox = CType(sender, ComboBox)
comboBox1.BackColor = _
CType(CType(sender, ComboBox).SelectedItem, Color)
End Sub
Remarks
If the ValueType property for the cell has not been set, the DataGridViewColumn.ValueType property for the owning column is used, if it exists.
The Value property is the actual data object contained by the cell, whereas the FormattedValue property is the formatted representation of the data. The ValueType and FormattedValueType properties correspond to the data types of these values, respectively.