Web Reference: Focus is a low-level method intended primarily for custom control authors. Instead, application programmers should use the Select method or the ActiveControl property for child controls, or the Activate method for forms. Focus() is not working for me. var form = new loginForm(); if (Application.OpenForms[form.Name] == null) { form.Show(); } else { form.Focus(); What am I doing wrong? Try this: this.Activate(); You need to show the form first - use the Show() method: Edit: (updated question) To force a focus on a control in Windows Forms, you can use the Focus () method of the control. Here's an example: // Set focus to a control myControl.Focus ();
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