using System;
using System.Windows.Forms;
namespace NnumericUpDownSample
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
// 輸入法切換回英數,且停用輸入法切換
numericUpDown1.ImeMode = ImeMode.Disable;
// 設定初始值、最大值和最小值
numericUpDown1.Minimum = -9999999;
numericUpDown1.Maximum = 9999999;
numericUpDown1.Value = 9999;
}
#region 全選
private void SelectAll()
{
numericUpDown1.Select(0, numericUpDown1.Text.Length);
}
private void numericUpDown1_Enter(object sender, EventArgs e)
{
SelectAll();
}
private void numericUpDown1_MouseDown(object sender, MouseEventArgs e)
{
SelectAll();
}
#endregion
private void chkDecimalPlaces_CheckedChanged(object sender, EventArgs e)
{
if (numericUpDown1.DecimalPlaces > 0)
{
numericUpDown1.DecimalPlaces = 0;
numericUpDown1.Value = Decimal.Round(numericUpDown1.Value, 0, MidpointRounding.AwayFromZero);
}
else
{
numericUpDown1.DecimalPlaces = 2;
numericUpDown1.Increment = 0.25M;
}
}
private void chkThousandsSeparator_CheckedChanged(object sender, EventArgs e)
{
numericUpDown1.ThousandsSeparator = !numericUpDown1.ThousandsSeparator;
}
private void chkHexadecimal_CheckedChanged(object sender, EventArgs e)
{
numericUpDown1.Hexadecimal = !numericUpDown1.Hexadecimal;
}
private void numericUpDown1_ValueChanged(object sender, EventArgs e)
{
string info = string.Empty;
info += $"Value:{numericUpDown1.Value}" + Environment.NewLine;
info += $"Text:{numericUpDown1.Text}";
lblInfo.Text = info;
}
}
}
NumericUpDown.Text Property
從官方文件上就可以知道 Text Property 不會出現在屬性視窗內,但是 Code 內是可以直接叫用,透過 Text Property 來自訂全選功能
NumericUpDown 為輸入數字使用,因此把強制切換成英數並關閉鍵盤切換輸入法
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