74 lines
1.9 KiB
C#
74 lines
1.9 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace WinFormsLibrary1
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{
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public class Error: Exception
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{
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string message;
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public Error(string text) { message = text; }
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}
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public partial class TextComponent : UserControl
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{
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public event EventHandler SelectedElementChange
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{
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add { checkBox1.CheckedChanged += value; textBox1.TextChanged += value; }
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remove { checkBox1.CheckedChanged -= value; textBox1.TextChanged -= value; }
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}
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public TextComponent()
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{
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InitializeComponent();
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}
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private void checkBox1_CheckedChanged(object sender, EventArgs e)
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{
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if (checkBox1.Checked)
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{
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textBox1.ReadOnly = true;
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textBox1.Clear();
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}
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else textBox1.ReadOnly = false;
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}
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private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
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{
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char number = e.KeyChar;
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if (!Char.IsDigit(number))
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{
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e.Handled = true;
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}
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}
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public int? TextValue
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{
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get
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{
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if(!checkBox1.Checked)
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{
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int result = -1;
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int.TryParse(textBox1.Text, out result);
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if( result == -1)
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{
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throw new Error("Несоответсвие");
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}
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return result;
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}
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return null;
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}
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set
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{
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checkBox1.Checked = value == null;
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textBox1.Text = value?.ToString();
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}
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}
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}
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}
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