DataGridViewCellContextMenuStripNeededEventArgs.ContextMenuStrip プロパティ
メモ : このプロパティは、.NET Framework version 2.0 で新しく追加されたものです。 CellContextMenuStripNeeded イベントの発生元であるセルのショートカット メニューを取得または設定します。
名前空間: System.Windows.Forms
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文
プロパティ値
セルの ContextMenuStrip。
解説
使用例
プラットフォーム
バージョン情報
参照
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文Dim instance As DataGridViewCellContextMenuStripNeededEventArgs Dim value As ContextMenuStrip value = instance.ContextMenuStrip instance.ContextMenuStrip = value
public: property ContextMenuStrip^ ContextMenuStrip { ContextMenuStrip^ get (); void set (ContextMenuStrip^ value); }
/** @property */ public ContextMenuStrip get_ContextMenuStrip () /** @property */ public void set_ContextMenuStrip (ContextMenuStrip value)
public function get ContextMenuStrip () : ContextMenuStrip public function set ContextMenuStrip (value : ContextMenuStrip)
セルの ContextMenuStrip。
解説使用例イベント ハンドラで ContextMenuStrip プロパティを使用して、セルのショートカット メニューを設定するコード例を次に示します。
Private WithEvents wholeTable As New ToolStripMenuItem() Private WithEvents lookUp As New ToolStripMenuItem() Private strip As ContextMenuStrip Private cellErrorText As String Private Sub dataGridView1_CellContextMenuStripNeeded(ByVal sender As Object, _ ByVal e As DataGridViewCellContextMenuStripNeededEventArgs) _ Handles dataGridView1.CellContextMenuStripNeeded cellErrorText = String.Empty If strip Is Nothing Then strip = New ContextMenuStrip() lookUp.Text = "Look Up" wholeTable.Text = "See Whole Table" strip.Items.Add(lookUp) strip.Items.Add(wholeTable) End If e.ContextMenuStrip = strip End Sub Private Sub wholeTable_Click(ByVal sender As Object, ByVal e As EventArgs) Handles wholeTable.Click dataGridView1.DataSource = Populate("Select * from employees", True) End Sub Private theCellImHoveringOver As DataGridViewCellEventArgs Private Sub dataGridView1_CellMouseEnter(ByVal sender As Object, _ ByVal e As DataGridViewCellEventArgs) _ Handles dataGridView1.CellMouseEnter theCellImHoveringOver = e End Sub Private cellErrorLocation As DataGridViewCellEventArgs Private Sub lookUp_Click(ByVal sender As Object, ByVal e As EventArgs) Handles lookUp.Click Try dataGridView1.DataSource = Populate("Select * from employees where " & _ dataGridView1.Columns(theCellImHoveringOver.ColumnIndex).Name & " = '" & _ dataGridView1.Rows(theCellImHoveringOver.RowIndex).Cells(theCellImHoveringOver.ColumnIndex).Value.ToString() & _ "'", True) Catch ex As SqlException cellErrorText = "Can't look this cell up" cellErrorLocation = theCellImHoveringOver End Try End Sub Private Sub dataGridView1_CellErrorTextNeeded(ByVal sender As Object, _ ByVal e As DataGridViewCellErrorTextNeededEventArgs) _ Handles dataGridView1.CellErrorTextNeeded If (Not cellErrorLocation Is Nothing) Then If e.ColumnIndex = cellErrorLocation.ColumnIndex AndAlso _ e.RowIndex = cellErrorLocation.RowIndex Then e.ErrorText = cellErrorText End If End If End Sub Private Function Populate(ByVal query As String, ByVal resetUnsharedCounter As Boolean) As DataTable If resetUnsharedCounter Then ResetCounter() End If ' Alter the data source as necessary Dim adapter As New SqlDataAdapter(query, _ New SqlConnection("Integrated Security=SSPI;Persist Security Info=False;" & _ "Initial Catalog=Northwind;Data Source=localhost")) Dim table As New DataTable() table.Locale = System.Globalization.CultureInfo.InvariantCulture adapter.Fill(table) Return table End Function Private count As New Label() Private unsharedRowCounter As Integer Private Sub ResetCounter() unsharedRowCounter = 0 count.Text = unsharedRowCounter.ToString() End Sub
private ToolStripMenuItem wholeTable = new ToolStripMenuItem(); private ToolStripMenuItem lookUp = new ToolStripMenuItem(); private ContextMenuStrip strip; private string cellErrorText; private void dataGridView1_CellContextMenuStripNeeded(object sender, DataGridViewCellContextMenuStripNeededEventArgs e) { cellErrorText = String.Empty; if (strip == null) { strip = new ContextMenuStrip(); lookUp.Text = "Look Up"; wholeTable.Text = "See Whole Table"; strip.Items.Add(lookUp); strip.Items.Add(wholeTable); } e.ContextMenuStrip = strip; } private void wholeTable_Click(object sender, EventArgs e) { dataGridView1.DataSource = Populate("Select * from employees", true); } private DataGridViewCellEventArgs theCellImHoveringOver; private void dataGridView1_CellMouseEnter(object sender, DataGridViewCellEventArgs e) { theCellImHoveringOver = e; } private DataGridViewCellEventArgs cellErrorLocation; private void lookUp_Click(object sender, EventArgs e) { try { dataGridView1.DataSource = Populate("Select * from employees where " + dataGridView1.Columns[theCellImHoveringOver.ColumnIndex].Name + " = '" + dataGridView1.Rows[theCellImHoveringOver.RowIndex]. Cells[theCellImHoveringOver.ColumnIndex].Value + "'", true); } catch (SqlException) { cellErrorText = "Can't look this cell up"; cellErrorLocation = theCellImHoveringOver; } } private void dataGridView1_CellErrorTextNeeded(object sender, DataGridViewCellErrorTextNeededEventArgs e) { if (cellErrorLocation != null) { if (e.ColumnIndex == cellErrorLocation.ColumnIndex && e.RowIndex == cellErrorLocation.RowIndex) { e.ErrorText = cellErrorText; } } } private DataTable Populate(string query, bool resetUnsharedCounter) { if (resetUnsharedCounter) { ResetCounter(); } // Alter the data source as necessary SqlDataAdapter adapter = new SqlDataAdapter(query, new SqlConnection("Integrated Security=SSPI;Persist Security Info=False;" + "Initial Catalog=Northwind;Data Source=localhost")); DataTable table = new DataTable(); table.Locale = System.Globalization.CultureInfo.InvariantCulture; adapter.Fill(table); return table; } private Label count = new Label(); private int unsharedRowCounter; private void ResetCounter() { unsharedRowCounter = 0; count.Text = unsharedRowCounter.ToString(); }
ToolStripMenuItem^ wholeTable; ToolStripMenuItem^ lookUp; System::Windows::Forms::ContextMenuStrip^ strip; String^ cellErrorText; void dataGridView1_CellContextMenuStripNeeded( Object^ /*sender*/ , DataGridViewCellContextMenuStripNeededEventArgs^ e ) { cellErrorText = String::Empty; if ( strip == nullptr ) { strip = gcnew System::Windows::Forms::ContextMenuStrip; lookUp->Text = L"Look Up"; wholeTable->Text = L"See Whole Table"; strip->Items->Add( lookUp ); strip->Items->Add( wholeTable ); } e->ContextMenuStrip = strip; } void wholeTable_Click( Object^ /*sender*/, EventArgs^ /*e*/ ) { dataGridView1->DataSource = Populate( L"Select * from employees", true ); } DataGridViewCellEventArgs^ theCellImHoveringOver; void dataGridView1_CellMouseEnter( Object^ /*sender*/, DataGridViewCellEventArgs^ e ) { theCellImHoveringOver = e; } DataGridViewCellEventArgs^ cellErrorLocation; void lookUp_Click( Object^ /*sender*/, EventArgs^ /*e*/ ) { try { dataGridView1->DataSource = Populate( String::Format( L"Select * from employees where {0} = '{1}'", dataGridView1->Columns[ theCellImHoveringOver->ColumnIndex ]->Name, dataGridView1->Rows[ theCellImHoveringOver->RowIndex ]->Cells[ theCellImHoveringOver->ColumnIndex ]->Value ), true ); } catch ( ... ) { cellErrorText = L"Can't look this cell up"; cellErrorLocation = theCellImHoveringOver; } } void dataGridView1_CellErrorTextNeeded( Object^ /*sender*/, DataGridViewCellErrorTextNeededEventArgs^ e ) { if ( cellErrorLocation != nullptr ) { if ( e->ColumnIndex == cellErrorLocation->ColumnIndex && e->RowIndex == cellErrorLocation->RowIndex ) { e->ErrorText = cellErrorText; } } } DataTable^ Populate( String^ query, bool resetUnsharedCounter ) { if ( resetUnsharedCounter ) { ResetCounter(); } // Alter the data source as necessary SqlDataAdapter^ adapter = gcnew SqlDataAdapter( query, gcnew SqlConnection( L"Integrated Security=SSPI;Persist Security Info=False;" L"Initial Catalog=Northwind;Data Source= localhost" ) ); DataTable^ table = gcnew DataTable; adapter->Fill( table ); return table; } Label^ count; int unsharedRowCounter; void ResetCounter() { unsharedRowCounter = 0; count->Text = unsharedRowCounter.ToString(); }
プラットフォームWindows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
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バージョン情報参照- DataGridViewCellContextMenuStripNeededEventArgs.ContextMenuStrip プロパティのページへのリンク
