.NET Framework Class Library DataGridViewCell..::.ValueType Property Gets or sets the data type of the values in the cell. (in System.Windows.Forms.dll)
Syntax
<BrowsableAttribute(False)> _
Public Overridable Property ValueType As Type
Get
Set
[BrowsableAttribute(false)]
public virtual Type ValueType { get; set; }
[BrowsableAttribute(false)]
public:
virtual property Type^ ValueType {
Type^ get ();
void set (Type^ value);
}
[<BrowsableAttribute(false)>]
abstract ValueType : Type with get, set
[<BrowsableAttribute(false)>]
override ValueType : Type with get, set
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.
Examples
The following code example demonstrates the use of this property.
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
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;
}
Version Information
.NET FrameworkSupported in: 4, 3.5, 3.0, 2.0 .NET Framework Client ProfileSupported in: 4, 3.5 SP1
Platforms
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role not supported), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
See Also
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Biblioteca de clases de .NET Framework DataGridViewCell..::.ValueType (Propiedad) Obtiene o establece el tipo de datos de los valores de la celda. (en System.Windows.Forms.dll)
Sintaxis
<BrowsableAttribute(False)> _
Public Overridable Property ValueType As Type
Get
Set
[BrowsableAttribute(false)]
public virtual Type ValueType { get; set; }
[BrowsableAttribute(false)]
public:
virtual property Type^ ValueType {
Type^ get ();
void set (Type^ value);
}
[<BrowsableAttribute(false)>]
abstract ValueType : Type with get, set
[<BrowsableAttribute(false)>]
override ValueType : Type with get, set
Valor de propiedadTipo: System..::.TypeType que representa el tipo de datos del valor de la celda.
Comentarios
Si no se ha establecido la propiedad ValueType de la celda, se utiliza la propiedad DataGridViewColumn..::.ValueType para la columna propietaria, si existe. La propiedad Value es el objeto de datos real que contiene la celda, mientras que la propiedad FormattedValue es la representación con formato de los datos. Las propiedades ValueType y FormattedValueType corresponden a los tipos de datos de estos valores, respectivamente.
Ejemplos
En el ejemplo de código siguiente se muestra el uso de esta propiedad.
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
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;
}
Información de versión
.NET FrameworkCompatible con: 4, 3.5, 3.0, 2.0 .NET Framework Client ProfileCompatible con: 4, 3.5 SP1
Plataformas
Windows 7, Windows Vista SP1 o posterior, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (no se admite Server Core), Windows Server 2008 R2 (se admite Server Core con SP1 o posterior), Windows Server 2003 SP2
.NET Framework no admite todas las versiones de todas las plataformas. Para obtener una lista de las versiones compatibles, vea Requisitos de sistema de .NET Framework.
Vea también
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