DataGridView.SelectedCells プロパティ
定義
ユーザーが選択したセルのコレクションを取得します。Gets the collection of cells selected by the user.
public:
property System::Windows::Forms::DataGridViewSelectedCellCollection ^ SelectedCells { System::Windows::Forms::DataGridViewSelectedCellCollection ^ get(); };
[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.DataGridViewSelectedCellCollection SelectedCells { get; }
member this.SelectedCells : System.Windows.Forms.DataGridViewSelectedCellCollection
Public ReadOnly Property SelectedCells As DataGridViewSelectedCellCollection
プロパティ値
ユーザーが選択したセルを表す DataGridViewSelectedCellCollection。A DataGridViewSelectedCellCollection that represents the cells selected by the user.
- 属性
例
次のコード例では、@no__t 0 のコレクションを使用して、選択範囲の値の合計を検索する方法を示します。The following code example demonstrates how to use the SelectedCells collection to find the sum of the values in the selection. この例では、このコレクションを反復処理し、有効な値を合計に追加します。これはラベルに表示されます。In the example, this collection is iterated through and the valid values are added to the sum, which is displayed in a label. この例は、SelectionChanged イベントで使用できる大きな例の一部です。This example is part of a larger example available in the SelectionChanged event.
private void UpdateLabelText()
{
int WithdrawalTotal = 0;
int DepositTotal = 0;
int SelectedCellTotal = 0;
int counter;
// Iterate through all the rows and sum up the appropriate columns.
for (counter = 0; counter < (DataGridView1.Rows.Count);
counter++)
{
if (DataGridView1.Rows[counter].Cells["Withdrawals"].Value
!= null)
{
if (DataGridView1.Rows[counter].
Cells["Withdrawals"].Value.ToString().Length != 0)
{
WithdrawalTotal += int.Parse(DataGridView1.Rows[counter].
Cells["Withdrawals"].Value.ToString());
}
}
if (DataGridView1.Rows[counter].Cells["Deposits"].Value != null)
{
if (DataGridView1.Rows[counter]
.Cells["Deposits"].Value.ToString().Length != 0)
{
DepositTotal += int.Parse(DataGridView1.Rows[counter]
.Cells["Deposits"].Value.ToString());
}
}
}
// Iterate through the SelectedCells collection and sum up the values.
for (counter = 0;
counter < (DataGridView1.SelectedCells.Count); counter++)
{
if (DataGridView1.SelectedCells[counter].FormattedValueType ==
Type.GetType("System.String"))
{
string value = null;
// If the cell contains a value that has not been commited,
// use the modified value.
if (DataGridView1.IsCurrentCellDirty == true)
{
value = DataGridView1.SelectedCells[counter]
.EditedFormattedValue.ToString();
}
else
{
value = DataGridView1.SelectedCells[counter]
.FormattedValue.ToString();
}
if (value != null)
{
// Ignore cells in the Description column.
if (DataGridView1.SelectedCells[counter].ColumnIndex !=
DataGridView1.Columns["Description"].Index)
{
if (value.Length != 0)
{
SelectedCellTotal += int.Parse(value);
}
}
}
}
}
// Set the labels to reflect the current state of the DataGridView.
Label1.Text = "Withdrawals Total: " + WithdrawalTotal.ToString();
Label2.Text = "Deposits Total: " + DepositTotal.ToString();
Label3.Text = "Selected Cells Total: " + SelectedCellTotal.ToString();
Label4.Text = "Total entries: " + DataGridView1.RowCount.ToString();
}
Private Sub UpdateLabelText()
Dim WithdrawalTotal As Integer = 0
Dim DepositTotal As Integer = 0
Dim SelectedCellTotal As Integer = 0
Dim counter As Integer
' Iterate through all the rows and sum up the appropriate columns.
For counter = 0 To (DataGridView1.Rows.Count - 1)
If Not DataGridView1.Rows(counter) _
.Cells("Withdrawals").Value Is Nothing Then
If Not DataGridView1.Rows(counter) _
.Cells("Withdrawals").Value.ToString().Length = 0 Then
WithdrawalTotal += _
Integer.Parse(DataGridView1.Rows(counter) _
.Cells("Withdrawals").Value.ToString())
End If
End If
If Not DataGridView1.Rows(counter) _
.Cells("Deposits").Value Is Nothing Then
If Not DataGridView1.Rows(counter) _
.Cells("Deposits").Value.ToString().Length = 0 Then
DepositTotal += _
Integer.Parse(DataGridView1.Rows(counter) _
.Cells("Deposits").Value.ToString())
End If
End If
Next
' Iterate through the SelectedCells collection and sum up the values.
For counter = 0 To (DataGridView1.SelectedCells.Count - 1)
If DataGridView1.SelectedCells(counter).FormattedValueType Is _
Type.GetType("System.String") Then
Dim value As String = Nothing
' If the cell contains a value that has not been commited,
' use the modified value.
If (DataGridView1.IsCurrentCellDirty = True) Then
value = DataGridView1.SelectedCells(counter) _
.EditedFormattedValue.ToString()
Else
value = DataGridView1.SelectedCells(counter) _
.FormattedValue.ToString()
End If
If value IsNot Nothing Then
' Ignore cells in the Description column.
If Not DataGridView1.SelectedCells(counter).ColumnIndex = _
DataGridView1.Columns("Description").Index Then
If Not value.Length = 0 Then
SelectedCellTotal += Integer.Parse(value)
End If
End If
End If
End If
Next
' Set the labels to reflect the current state of the DataGridView.
Label1.Text = "Withdrawals Total: " & WithdrawalTotal.ToString()
Label2.Text = "Deposits Total: " & DepositTotal.ToString()
Label3.Text = "Selected Cells Total: " & SelectedCellTotal.ToString()
Label4.Text = "Total entries: " & DataGridView1.RowCount.ToString()
End Sub
注釈
@No__t-0 プロパティは、SelectionMode プロパティの値に関係なく、常に設定されます。The SelectedCells property is always populated regardless of the SelectionMode property value.
このプロパティには、参照時に選択範囲の読み取り専用スナップショットが格納されます。This property contains a read-only snapshot of the selection at the time it is referenced. このコレクションのコピーを保持している場合は、ユーザーが選択内容を変更した可能性のある実際の DataGridView の状態とは異なる場合があります。If you hold onto a copy of this collection, it may differ from the actual, subsequent DataGridView state in which the user may have changed the selection. したがって、コレクションのコピーを操作することはできません。Therefore, you should not operate on a copy of the collection.