C# Label.Focus方法代码示例

        /// <summary>
        /// Imports masters tapes from file.
        /// </summary>
        /// <param name="worker">The worker.</param>
        /// <param name="e">The <see cref="DoWorkEventArgs"/> instance containing the event data.</param>
        private void ImportMasters(BackgroundWorker worker, DoWorkEventArgs e)
        {
            Stream importStream = null;

            //Master List import, has a popup to enter Master Tape to add to
            List<MasterListValues> masterListValues = DataBaseControls.GetAllMasterListItems();
            string[] cameraValues = commonMethod.CameraDropdownItems();
            string masterTapeName = "";
            string cameraMasterName = "";
            bool addMasters = false;
            //create a new form for user to enter tape name
            Form masterPrompt = new Form();
            masterPrompt.Height = 200;
            masterPrompt.Width = 500;
            masterPrompt.SizeGripStyle = SizeGripStyle.Hide;
            masterPrompt.FormBorderStyle = FormBorderStyle.FixedSingle;
            masterPrompt.StartPosition = FormStartPosition.CenterScreen;
            masterPrompt.Text = "Enter Tape Name";

            //Set up items to add to popup box
            Label textLabel = new Label() { Left = 50, Top = 20, Text = "Master Archive to Import" };
            ComboBox inputBox = new ComboBox() { Left = 50, Top = 50, Width = 400 };
            //add items to combobox
            foreach (MasterListValues values in masterListValues)
            {
                inputBox.Items.Add(values.MasterArchive);
            }
            inputBox.SelectedIndex = 0;
            //add media combobox
            ComboBox mediaCombo = new ComboBox() { Left = 50, Top = 75, Width = 200 };
            //add items to combobox
            foreach (string mediaValue in cameraValues)
            {
                mediaCombo.Items.Add(mediaValue);
            }
            mediaCombo.SelectedIndex = 1;
            mediaCombo.KeyPress += (senderCombo, eCombo) => { eCombo.Handled = true; };
            mediaCombo.SelectedIndexChanged += (senderCombo, eCombo) => { textLabel.Focus(); };
            //Check for names in the filename
            #region Check for names in File
            try
            {
                //check to make sure there is something selected
                if (!ofd.FileName.Equals(string.Empty))
                {
                    //get name of file without extension
                    string nameFile = Path.GetFileNameWithoutExtension(ofd.FileName);
                    //get index of the word master
                    int index = nameFile.ToLower().IndexOf("master");

                    if(index != -1)
                    {
                        //get substring to include "master ddd"
                        nameFile = nameFile.Substring(index);

                        //check to make sure the last character is a digit
                        while (!char.IsDigit(nameFile[nameFile.Length - 1]))
                        {
                            nameFile = nameFile.Remove(nameFile.Length - 1, 1);
                        }

                        //convert name to lowercasse and then camelcase
                        TextInfo textInfo = new CultureInfo("en-US", false).TextInfo;
                        nameFile = textInfo.ToTitleCase(nameFile.ToLower());

                        //add name of master tape if not included
                        if (!inputBox.Items.Contains(nameFile))
                        {
                            inputBox.Items.Add(nameFile);
                        }
                        inputBox.Text = nameFile;
                    }
                }
            }
            catch { Debug.WriteLine("Error in master gather"); }

            //check if there is a media defined in the name using all combobox items
            try
            {
                //check to make sure there is something selected
                if (!ofd.FileName.Equals(string.Empty))
                {

                    //get name of file without extension
                    foreach (string obj in mediaCombo.Items)
                    {
                        Debug.WriteLine("In media for loop");
                        if (!obj.ToLower().Equals("other"))
                        {
                            Debug.WriteLine("Does not equal other");
                            //string[] mediaItems = mediaCombo.DataSource.t
                            string nameFile = Path.GetFileNameWithoutExtension(ofd.FileName);

                            //get index of the word master
                            int index = nameFile.ToLower().IndexOf(obj.ToLower());
//.........这里部分代码省略.........

        private void lbNoteName_MouseDown(object sender, MouseEventArgs e)
        {
            lbNameChoose = (Label)sender;
            xNote = e.X;
            yNote = e.Y;
            xNoteMove = lbNameChoose.Left;
            yNoteMove = lbNameChoose.Top;

            lbNameChoose.Focus();
        }

		public void OneClickComboBoxCell ()
		{
			Form form = null;

			try
			{
				// Create a form, a text label, and a data-grid-view.
				form = new Form ();
				Label label = new Label ();
				label.Text = "Label";
				label.Parent = form;
				ClickableDataGridView dgv = new ClickableDataGridView ();
				dgv.Parent = form;

				// Create a combo-box column.
				DataGridViewComboBoxColumn cbCol = new DataGridViewComboBoxColumn ();
				cbCol.HeaderText = "Name";
				dgv.Columns.Add (cbCol);

				// .NET requires that all possible values for combo-boxes
				// in a column are added to the column.
				cbCol.Items.Add ("Item1");
				cbCol.Items.Add ("Item2");
				cbCol.Items.Add ("Item3");
				cbCol.Items.Add ("Item4");

				// Set up the contents of the data-grid.
				dgv.Rows.Add ("Item1");
				dgv.Rows.Add ("Item2");

				// Select the cell.
				dgv.CurrentCell = dgv.Rows[0].Cells[0];

				// Focus the data-grid-view.  (Without this, its Leave
				// event won't get called when something outside of the
				// data-grid-view gets focused.)
				dgv.Focus ();

				// Show the form, let it draw.
				form.Show ();
				Application.DoEvents ();

				// Locate the drop-down button.  (This code is taken from mono-winforms,
				// from the private method DataGridViewComboBoxCell.CalculateButtonArea(),
				// and was then hacked mercilessly.)
				Rectangle button_area = Rectangle.Empty;
				{
					int border = 3 /* ThemeEngine.Current.Border3DSize.Width */;
					const int button_width = 16;
					Rectangle text_area = dgv.GetCellDisplayRectangle (0, 0, false);
					button_area.X = text_area.Right - button_width - border;
					button_area.Y = text_area.Y + border;
					button_area.Width = button_width;
					button_area.Height = text_area.Height - 2 * border;
				}

				// Click on the drop-down button.
				int x = button_area.X + (button_area.Width / 2);
				int y = button_area.Y + (button_area.Height / 2);
				if (Environment.OSVersion.Platform == PlatformID.Win32NT
				&& Type.GetType ("Mono.Runtime") == null)
				{
					// Calling OnMouseDownInternal () in Win32 doesn't work.
					// My best guess as to why is that the WinForms ComboBox
					// is a wrapper around the ComCtl control, e.g. similar
					// to the reason that Paint event-handlers don't work on
					// TreeView.  So we go through all this rigamarole to
					// simulate a mouse click.

					// First, get the location of the desired mouse-click, in
					// data-grid-view coordinates.
					Win32Point ptGlobal = new Win32Point ();
					ptGlobal.x = x + dgv.Location.X;
					ptGlobal.y = y + dgv.Location.Y;

					// Convert that to screen coordinates.
					ClientToScreen (form.Handle, ref ptGlobal);

					// Move the mouse-pointer there.  (Yes, this really appears
					// to be necessary.)
					SetCursorPos (ptGlobal.x, ptGlobal.y);

					// Convert screen coordinates to mouse coordinates.
					ptGlobal.x *= (65535 / SystemInformation.VirtualScreen.Width);
					ptGlobal.y *= (65535 / SystemInformation.VirtualScreen.Height);

					// Finally, fire a mouse-down and mouse-up event.
					mouse_event (MOUSEEVENTF_LEFTDOWN|MOUSEEVENTF_ABSOLUTE,
						ptGlobal.x, ptGlobal.y, 0, 0);
					mouse_event (MOUSEEVENTF_LEFTUP|MOUSEEVENTF_ABSOLUTE,
						ptGlobal.x, ptGlobal.y, 0, 0);

					// Let the system process these events.
					Application.DoEvents ();
				}
				else
				{
					// And this is how the same code is done under Linux.
					// (No one should wonder why I prefer Mono to MS Windows .NET ;-)
					MouseEventArgs me = new MouseEventArgs (MouseButtons.Left, 1, x, y, 0);
//.........这里部分代码省略.........

 /// <summary>
 /// Seleccionar una imagen dentro del componente, a partir del nombre de la misma
 /// </summary>
 /// <param name="pRutaImagen"></param>
 public void SeleccionarImagen( string pRutaImagen)
 {
     int mIndice = -1;
     for (int i = 0; i < this.ListaImagenes.Count; i++)
         if (this.ListaImagenes.ElementAt(i).ToLower() == pRutaImagen.ToLower())
             mIndice = i;
     if (mIndice >= 0)
     {
         DeseleccionarImagen();
         iPBoxSeleccionado = (PictureBox)this.Controls.Find("PictureBox" + mIndice.ToString() , true)[0];
         iPBoxSeleccionado.Focus();
         if (this.labels)
         {
             iLabelSeleccionado = (Label)this.Controls.Find("LabelPictureBox" + mIndice.ToString(), true)[0];
             iLabelSeleccionado.BackColor = Color.Firebrick;
             iLabelSeleccionado.Focus();
         }
     }
 }