DataGridViewColumn.DataPropertyName Proprietà
Definizione
Importante
Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.
Ottiene o imposta il nome della proprietà dell'origine dati o della colonna del database a cui è associato l'oggetto DataGridViewColumn.
public:
property System::String ^ DataPropertyName { System::String ^ get(); void set(System::String ^ value); };
[System.ComponentModel.Browsable(true)]
[System.ComponentModel.TypeConverter("System.Windows.Forms.Design.DataMemberFieldConverter, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
public string DataPropertyName { get; set; }
[System.ComponentModel.Browsable(true)]
[System.ComponentModel.TypeConverter("System.Windows.Forms.Design.DataMemberFieldConverter, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
public string DataPropertyName { get; set; }
[System.ComponentModel.Browsable(true)]
[System.ComponentModel.TypeConverter("System.Windows.Forms.Design.DataMemberFieldConverter, System.Windows.Forms.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
public string DataPropertyName { get; set; }
[<System.ComponentModel.Browsable(true)>]
[<System.ComponentModel.TypeConverter("System.Windows.Forms.Design.DataMemberFieldConverter, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")>]
member this.DataPropertyName : string with get, set
[<System.ComponentModel.Browsable(true)>]
[<System.ComponentModel.TypeConverter("System.Windows.Forms.Design.DataMemberFieldConverter, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")>]
member this.DataPropertyName : string with get, set
[<System.ComponentModel.Browsable(true)>]
[<System.ComponentModel.TypeConverter("System.Windows.Forms.Design.DataMemberFieldConverter, System.Windows.Forms.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")>]
member this.DataPropertyName : string with get, set
Public Property DataPropertyName As String
Valore della proprietà
Nome senza distinzione tra maiuscole e minuscole della proprietà o della colonna del database associata all'oggetto DataGridViewColumn.
- Attributi
Esempio
Nell'esempio di codice seguente viene illustrato come scegliere la proprietà che ogni colonna rappresenta.
public enum Title
{
King,
Sir
};
Public Enum Title
King
Sir
End Enum
private void EnumsAndComboBox_Load(object sender, System.EventArgs e)
{
// Populate the data source.
bindingSource1.Add(new Knight(Title.King, "Uther", true));
bindingSource1.Add(new Knight(Title.King, "Arthur", true));
bindingSource1.Add(new Knight(Title.Sir, "Mordred", false));
bindingSource1.Add(new Knight(Title.Sir, "Gawain", true));
bindingSource1.Add(new Knight(Title.Sir, "Galahad", true));
// Initialize the DataGridView.
dataGridView1.AutoGenerateColumns = false;
dataGridView1.AutoSize = true;
dataGridView1.DataSource = bindingSource1;
dataGridView1.Columns.Add(CreateComboBoxWithEnums());
// Initialize and add a text box column.
DataGridViewColumn column = new DataGridViewTextBoxColumn();
column.DataPropertyName = "Name";
column.Name = "Knight";
dataGridView1.Columns.Add(column);
// Initialize and add a check box column.
column = new DataGridViewCheckBoxColumn();
column.DataPropertyName = "GoodGuy";
column.Name = "Good";
dataGridView1.Columns.Add(column);
// Initialize the form.
this.Controls.Add(dataGridView1);
this.AutoSize = true;
this.Text = "DataGridView object binding demo";
}
DataGridViewComboBoxColumn CreateComboBoxWithEnums()
{
DataGridViewComboBoxColumn combo = new DataGridViewComboBoxColumn();
combo.DataSource = Enum.GetValues(typeof(Title));
combo.DataPropertyName = "Title";
combo.Name = "Title";
return combo;
}
#region "business object"
private class Knight
{
private string hisName;
private bool good;
private Title hisTitle;
public Knight(Title title, string name, bool good)
{
hisTitle = title;
hisName = name;
this.good = good;
}
public Knight()
{
hisTitle = Title.Sir;
hisName = "<enter name>";
good = true;
}
public string Name
{
get
{
return hisName;
}
set
{
hisName = value;
}
}
public bool GoodGuy
{
get
{
return good;
}
set
{
good = value;
}
}
public Title Title
{
get
{
return hisTitle;
}
set
{
hisTitle = value;
}
}
}
#endregion
Private Sub SetupGrid()
knights = New List(Of Knight)
knights.Add(New Knight(Title.King, "Uther", True))
knights.Add(New Knight(Title.King, "Arthur", True))
knights.Add(New Knight(Title.Sir, "Mordred", False))
knights.Add(New Knight(Title.Sir, "Gawain", True))
knights.Add(New Knight(Title.Sir, "Galahad", True))
' Initialize the DataGridView.
dataGridView1.AutoGenerateColumns = False
dataGridView1.AutoSize = True
dataGridView1.DataSource = knights
dataGridView1.Columns.Add(CreateComboBoxWithEnums())
' Initialize and add a text box column.
Dim column As DataGridViewColumn = _
New DataGridViewTextBoxColumn()
column.DataPropertyName = "Name"
column.Name = "Knight"
dataGridView1.Columns.Add(column)
' Initialize and add a check box column.
column = New DataGridViewCheckBoxColumn()
column.DataPropertyName = "GoodGuy"
column.Name = "Good"
dataGridView1.Columns.Add(column)
' Initialize the form.
Controls.Add(dataGridView1)
Me.AutoSize = True
Me.Text = "DataGridView object binding demo"
End Sub
Private Function CreateComboBoxWithEnums() As DataGridViewComboBoxColumn
Dim combo As New DataGridViewComboBoxColumn()
combo.DataSource = [Enum].GetValues(GetType(Title))
combo.DataPropertyName = "Title"
combo.Name = "Title"
Return combo
End Function
#Region "business object"
Private Class Knight
Private hisName As String
Private good As Boolean
Private hisTitle As Title
Public Sub New(ByVal title As Title, ByVal name As String, _
ByVal good As Boolean)
hisTitle = title
hisName = name
Me.good = good
End Sub
Public Property Name() As String
Get
Return hisName
End Get
Set(ByVal Value As String)
hisName = Value
End Set
End Property
Public Property GoodGuy() As Boolean
Get
Return good
End Get
Set(ByVal Value As Boolean)
good = Value
End Set
End Property
Public Property Title() As Title
Get
Return hisTitle
End Get
Set(ByVal Value As Title)
hisTitle = Value
End Set
End Property
End Class
#End Region
Commenti
Quando la proprietà è impostata su true
, ogni colonna imposta automaticamente la AutoGenerateColumns proprietà DataPropertyName sul nome di una proprietà o di una colonna di database nell'origine DataSource dati specificata dalla proprietà . Questa associazione può essere eseguita manualmente, utile quando si vuole visualizzare solo un subset delle proprietà o delle colonne di database disponibili nell'origine dati. In questi casi, impostare la AutoGenerateColumns proprietà su false
e quindi aggiungere manualmente ogni oggetto , impostando il valore di ogni DataGridViewColumnDataPropertyName proprietà sulle proprietà o le colonne di database nell'origine dati da visualizzare.