using System.ComponentModel; using static System.Net.Mime.MediaTypeNames; namespace ComponentsLibrary { public partial class TestComponent : Component { private string _fileName; //DocumentEntry doc = new DocumentEntry("C:\\Users\\Natalia\\Desktop\\5semestr\\KOP\\KOP-PIbd-32-Katysheva-N-E", "doc.docx", text); public string FileName { set { if (string.IsNullOrEmpty(value)) { return; } if (!value.EndsWith(".txt")) { throw new ArgumentException("No txt file"); } _fileName = value; } } public TestComponent() { InitializeComponent(); _fileName = string.Empty; } public TestComponent(IContainer container) { container.Add(this); InitializeComponent(); _fileName = string.Empty; } public bool SaveToFile(string[] texts) { CheckFileExsists(); using var writer = new StreamWriter(_fileName, true); foreach (var text in texts) { writer.WriteLine(text); } writer.Flush(); return true; } private void CheckFileExsists() { if (string.IsNullOrEmpty(_fileName)) { throw new ArgumentNullException(_fileName); } if (!File.Exists(_fileName)) { File.Create(_fileName).Dispose(); } } } }