C# DataGridView.Dispose方法代码示例

		[Test] // Xamarin bug 5419
		public void EditingControlShowingTest_Unbound ()
		{
			using (DataGridView _dataGridView = new DataGridView ()) {
				DataGridViewComboBoxColumn _nameComboBoxColumn;
				DataGridViewTextBoxColumn _firstNameTextBoxColumn;
				DataGridViewCheckBoxColumn _chosenCheckBoxColumn;

				// Add the event-handler.
				_dataGridView.EditingControlShowing
					+= new DataGridViewEditingControlShowingEventHandler
						(DataGridView_EditingControlShowingTest);
				
				// No columns have been found in the event-handler yet.
				editingControlShowingTest_FoundColumns = 0;

				// _nameComboBoxColumn
				_nameComboBoxColumn = new DataGridViewComboBoxColumn ();
				_nameComboBoxColumn.HeaderText = "Name";
				_dataGridView.Columns.Add (_nameComboBoxColumn);

				// _firstNameTextBoxColumn
				_firstNameTextBoxColumn = new DataGridViewTextBoxColumn ();
				_firstNameTextBoxColumn.AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
				_firstNameTextBoxColumn.HeaderText = "First Name";
				_dataGridView.Columns.Add (_firstNameTextBoxColumn);

				// _chosenCheckBoxColumn
				_chosenCheckBoxColumn = new DataGridViewCheckBoxColumn ();
				_chosenCheckBoxColumn.HeaderText = "Chosen";
				_dataGridView.Columns.Add (_chosenCheckBoxColumn);

				// .NET requires that all possible values for combo-boxes in a column
				// are added to the column.
				_nameComboBoxColumn.Items.Add ("de Icaza");
				_nameComboBoxColumn.Items.Add ("Toshok");
				_nameComboBoxColumn.Items.Add ("Harper");
				_nameComboBoxColumn.Items.Add ("Boswell");

				// Set up the contents of the data-grid.
				_dataGridView.Rows.Add ("de Icaza", "Miguel", true);
				_dataGridView.Rows.Add ("Toshok", "Chris", false);
				_dataGridView.Rows.Add ("Harper", "Jackson", false);
				_dataGridView.Rows.Add ("Boswell", "Steven", true);
				
				// Edit a combo-box cell.
				_dataGridView.CurrentCell = _dataGridView.Rows[3].Cells[0];
				Assert.AreEqual (true, _dataGridView.Rows[3].Cells[0].Selected, "1-6");
				Assert.AreEqual (true, _dataGridView.BeginEdit (false), "1-7");
				_dataGridView.CancelEdit();

				// Edit a text-box cell.
				_dataGridView.CurrentCell = _dataGridView.Rows[0].Cells[1];
				Assert.AreEqual (false, _dataGridView.Rows[3].Cells[0].Selected, "1-8");
				Assert.AreEqual (true, _dataGridView.Rows[0].Cells[1].Selected, "1-9");
				Assert.AreEqual (true, _dataGridView.BeginEdit (false), "1-10");
				_dataGridView.CancelEdit();

				// Edit a check-box cell.
				_dataGridView.CurrentCell = _dataGridView.Rows[3].Cells[2];
				Assert.AreEqual (false, _dataGridView.Rows[0].Cells[1].Selected, "1-11");
				Assert.AreEqual (true, _dataGridView.Rows[3].Cells[2].Selected, "1-12");
				Assert.AreEqual (true, _dataGridView.BeginEdit (false), "1-13");
				_dataGridView.CancelEdit();

				// Make sure the event-handler was called each time.
				// (DataGridViewCheckBoxCell isn't derived from Control, so the
				// EditingControlShowing event doesn't get called for it.)
				Assert.AreEqual (3, editingControlShowingTest_FoundColumns, "1-14");

				_dataGridView.Dispose();
			}
		}

		[Test] // Novell bug 660986
		public void TestDispose ()
		{
			DataGridView dgv = new DataGridView ();
			dgv.Columns.Add ("TestColumn", "Test column");
			dgv.Rows.Add ();
			dgv.Dispose ();
			Assert.Throws (typeof (ArgumentOutOfRangeException), delegate { DataGridViewColumn col = dgv.Columns[0]; }, "#1");
			Assert.Throws (typeof (ArgumentOutOfRangeException), delegate { DataGridViewRow row = dgv.Rows[0]; }, "#2");
		}

        /// <summary>
        /// Show editor for config management
        /// </summary>
        public void Show()
        {
            configForm = new Form();
            buttonClose = new Button();
            buttonCancel = new Button();
            dgView = new DataGridView();

            dgView.Parent = configForm;
            dgView.BringToFront();
            dgView.RowHeadersVisible = false;
            buttonCancel.Parent = configForm;
            buttonClose.Parent = configForm;

            configForm.Text = "Config Editor";
            configForm.FormBorderStyle = FormBorderStyle.FixedDialog;
            configForm.MaximizeBox = false;
            configForm.MinimizeBox = false;
            configForm.StartPosition = FormStartPosition.CenterParent;

            Parameterlist.Clear();
            SetSize();

            dgView.Rows.Clear();
            try
            {
                Parameterlist = Read();
            }
            catch
            {
                MessageBox.Show("File Not Found, creating SQL default");
                InitSQLDefaults();
                Parameterlist = Read();
            }

            dgView.Columns.Add("dgName", "Name");
            dgView.Columns.Add("dgValue", "Value");
            dgView.Columns["dgName"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
            dgView.Columns["dgName"].FillWeight = 40;
            dgView.Columns["dgValue"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
            dgView.Columns["dgValue"].FillWeight = 60;

            foreach (CParameter x in Parameterlist)
            {
                dgView.Rows.Add();
                dgView.Rows[dgView.Rows.Count - 2].Cells[0].Value = x.Name;
                dgView.Rows[dgView.Rows.Count - 2].Cells[1].Value = x.Value;
            }

            buttonClose.Click += new EventHandler(buttonClose_Click);
            buttonCancel.Click += new EventHandler(buttonCancel_Click);
            dgView.KeyDown += new KeyEventHandler(dgView_KeyDown);

            configForm.ShowDialog();

            configForm.Dispose();
            buttonClose.Dispose();
            buttonCancel.Dispose();
            dgView.Dispose();
            GC.Collect();
        }

		public void DataSourceBindingContextDependency ()
		{
			List<DataItem> dataList = new List<DataItem> ();
			dataList.Add (new DataItem ());
			dataList.Add (new DataItem ());

			DataGridView dgv = new DataGridView ();
			dgv.DataSource = dataList;
			Assert.IsNull (dgv.BindingContext, "#1");
			Assert.IsFalse (dgv.IsHandleCreated, "#2");
			Assert.AreEqual (0, dgv.RowCount, "#3");

			dgv.DataSource = null;

			Form form = new Form ();
			form.Controls.Add (dgv);
			dgv.DataSource = dataList;

			Assert.IsNotNull (dgv.BindingContext, "#4");
			Assert.IsFalse (dgv.IsHandleCreated, "#5");
			Assert.AreEqual (2, dgv.RowCount, "#6");

			dgv.Dispose ();
			dgv = new DataGridView ();
			dgv.DataSource = dataList;

			Assert.IsNull (dgv.BindingContext, "#7");
			Assert.IsFalse (dgv.IsHandleCreated, "#8");
			Assert.AreEqual (0, dgv.RowCount, "#9");

			dgv.CreateControl ();

			Assert.IsNull (dgv.BindingContext, "#10");
			Assert.IsTrue (dgv.IsHandleCreated, "#11");
			Assert.AreEqual (0, dgv.RowCount, "#12");
		}

		[Test] // Novell bug 660986
		public void TestDispose ()
		{
			DataGridView dgv = new DataGridView ();
			dgv.Columns.Add ("TestColumn", "Test column");
			dgv.Rows.Add ();
			dgv.Dispose ();

			try {
				DataGridViewColumn col = dgv.Columns[0];
				Assert.Fail ("#1");
			}
			catch (ArgumentOutOfRangeException) {
			}

			try {
				DataGridViewRow row = dgv.Rows[0];
				Assert.Fail ("#2");
			}
			catch (ArgumentOutOfRangeException) {
			}
		}