DataGridViewBand.Tag 屬性

public:
 property System::Object ^ Tag { System::Object ^ get(); void set(System::Object ^ value); };

[System.ComponentModel.Browsable(false)]
public object? Tag { get; set; }

[System.ComponentModel.Browsable(false)]
public object Tag { get; set; }

[<System.ComponentModel.Browsable(false)>]
member this.Tag : obj with get, set

Public Property Tag As Object

屬性值

Object

Object，包含與群組列相關的資訊。An Object that contains information associated with the band. 預設為 null。The default is null.

屬性

BrowsableAttribute

範例

下列程式碼範例會使用 Tag 屬性來儲存稍後抓取來設定屬性的色彩 BackColor 。The following code example uses the Tag property to store a color that is later retrieved to set the BackColor property.

void PostRowCreation()
{
   SetBandColor( dataGridView->Columns[ 0 ], Color::CadetBlue );
   SetBandColor( dataGridView->Rows[ 1 ], Color::Coral );
   SetBandColor( dataGridView->Columns[ 2 ], Color::DodgerBlue );
}

void SetBandColor( DataGridViewBand^ band, Color color )
{
   band->Tag = color;
}


// Color the bands by the value stored in their tag.
void Button9_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
   IEnumerator^ myEnum1 = dataGridView->Columns->GetEnumerator();
   while ( myEnum1->MoveNext() )
   {
      DataGridViewBand^ band = static_cast<DataGridViewBand^>(myEnum1->Current);
      if ( band->Tag != nullptr )
      {
         band->DefaultCellStyle->BackColor =  *dynamic_cast<Color^>(band->Tag);
      }
   }

   IEnumerator^ myEnum2 = safe_cast<IEnumerable^>(dataGridView->Rows)->GetEnumerator();
   while ( myEnum2->MoveNext() )
   {
      DataGridViewBand^ band = safe_cast<DataGridViewBand^>(myEnum2->Current);
      if ( band->Tag != nullptr )
      {
         band->DefaultCellStyle->BackColor =  *dynamic_cast<Color^>(band->Tag);
      }
   }
}

private void PostRowCreation()
{
    SetBandColor(dataGridView.Columns[0], Color.CadetBlue);
    SetBandColor(dataGridView.Rows[1], Color.Coral);
    SetBandColor(dataGridView.Columns[2], Color.DodgerBlue);
}

private static void SetBandColor(DataGridViewBand band, Color color)
{
    band.Tag = color;
}

// Color the bands by the value stored in their tag.
private void Button9_Click(object sender, System.EventArgs e)
{

    foreach (DataGridViewBand band in dataGridView.Columns)
    {
        if (band.Tag != null)
        {
            band.DefaultCellStyle.BackColor = (Color)band.Tag;
        }
    }

    foreach (DataGridViewBand band in dataGridView.Rows)
    {
        if (band.Tag != null)
        {
            band.DefaultCellStyle.BackColor = (Color)band.Tag;
        }
    }
}

Private Sub PostRowCreation()
    SetBandColor(dataGridView.Columns(0), Color.CadetBlue)
    SetBandColor(dataGridView.Rows(1), Color.Coral)
    SetBandColor(dataGridView.Columns(2), Color.DodgerBlue)
End Sub

Private Shared Sub SetBandColor(ByVal band As DataGridViewBand, _
    ByVal color As Color)
    band.Tag = color
End Sub

' Color the bands by the value stored in their tag.
Private Sub Button9_Click(ByVal sender As Object, _
    ByVal e As System.EventArgs) Handles Button9.Click

    For Each band As DataGridViewBand In dataGridView.Columns
        If band.Tag IsNot Nothing Then
            band.DefaultCellStyle.BackColor = _
                CType(band.Tag, Color)
        End If
    Next

    For Each band As DataGridViewBand In dataGridView.Rows
        If band.Tag IsNot Nothing Then
            band.DefaultCellStyle.BackColor = _
                CType(band.Tag, Color)
        End If
    Next
End Sub

備註

Tag屬性可以儲存任何您想要與寬線產生關聯的物件。The Tag property can store any object that you want to associate with a band. 這個屬性通常用來儲存識別資訊，例如字串名稱、唯一識別碼 (例如， Guid) ，或資料庫中的波段資料索引。This property is typically used to store identifying information, such as a string name, a unique identifier (for example, a Guid), or the index of the band's data in a database.

適用於

另請參閱

• DataGridView
• DataGridViewRow
• DataGridViewColumn
• Guid