c# TextBox只允許輸入數字，禁用右鍵粘貼，允許Ctrl+v粘貼數字

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TextBox只允許輸入數字，最大長度為10

       //TextBox.ShortcutsEnabled為false  禁止右鍵和Ctrl+v        private void txtNumber_KeyPress(object sender, KeyPressEventArgs e)        {            //只允許輸入數字，粘貼數字            if (!(Char.IsNumber(e.KeyChar) || e.KeyChar == (char)8))            {                e.Handled = true;            }        }        //允許Ctrl+v粘貼數字        private void txtNumber_KeyUp(object sender, KeyEventArgs e)        {            if (e.KeyData == (Keys.Control | Keys.V))            {                if (Clipboard.ContainsText())                {                    try                    {                        Convert.ToInt64(Clipboard.GetText());  //檢查是否數字                        ((TextBox)sender).SelectedText = Clipboard.GetText().Trim(); //Ctrl+V 粘貼                          if (((TextBox)sender).TextLength > 10)                        {                            ((TextBox)sender).Text = ((TextBox)sender).Text.Remove(10); //TextBox最大長度為10  移除多餘的                        }                    }                    catch (Exception)                    {                        e.Handled = true;                        //throw;                    }                }            }        }

 

c# TextBox只允許輸入數字，禁用右鍵粘貼，允許Ctrl+v粘貼數字