最終更新:2014-04-03 (木) 14:56:07 (3669d)
System.Windows.Forms.TextBox
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http://msdn.microsoft.com/ja-jp/library/system.windows.forms.textbox(v=vs.110).aspx
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private void textBox_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == System.Windows.Forms.Keys.A & e.Control == true) { textBox.SelectAll(); } }