【发布时间】:2015-09-20 02:16:24
【问题描述】:
【问题讨论】:
标签: c# .net winforms textbox currency
【问题讨论】:
标签: c# .net winforms textbox currency
经过研究,我发现了这段代码。这段代码正是我想要的。
private void form_3_Load(object sender, EventArgs e)
{
textBox1.Text = "$0.00";
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
///
//Remove previous formatting, or the decimal check will fail including leading zeros
string value = textBox1.Text.Replace(",", "")
.Replace("$", "").Replace(".", "").TrimStart('0');
decimal ul;
//Check we are indeed handling a number
if (decimal.TryParse(value, out ul))
{
ul /= 100;
//Unsub the event so we don't enter a loop
textBox1.TextChanged -= textBox1_TextChanged;
//Format the text as currency
textBox1.Text = string.Format(CultureInfo.CreateSpecificCulture("en-US"), "{0:C2}", ul);
textBox1.TextChanged += textBox1_TextChanged;
textBox1.Select(textBox1.Text.Length, 0);
}
bool goodToGo = TextisValid(textBox1.Text);
btn_test.Enabled = goodToGo;
if (!goodToGo)
{
textBox1.Text = "$0.00";
textBox1.Select(textBox1.Text.Length, 0);
}
///
}
private bool TextisValid(string text)
{
Regex money = new Regex(@"^\$(\d{1,3}(\,\d{3})*|(\d+))(\.\d{2})?$");
return money.IsMatch(text);
}
void tb_TextChanged(object sender, EventArgs e)
{
//Remove previous formatting, or the decimal check will fail
string value = textBox1.Text.Replace(",", "").Replace("$", "");
decimal ul;
//Check we are indeed handling a number
if (decimal.TryParse(value, out ul))
{
//Unsub the event so we don't enter a loop
textBox1.TextChanged -= tb_TextChanged;
//Format the text as currency
textBox1.Text = string.Format(CultureInfo.CreateSpecificCulture("en-US"), "{0:C2}", ul);
textBox1.TextChanged += tb_TextChanged;
}
}
【讨论】:
下面是基本的做法,当文本发生变化时将其转换为十进制,然后将文本更改为十进制的字符串表示形式。
textBox1.TextChanged += (s,e) =>
{
var value = Decimal.Parse(textBox1.Text);
textBox1.Text = value.ToString("C");
}
您还应该检查文本框中的非法数字。看看Decimal.TryParse。
【讨论】:
我知道已经晚了,但试试这个应该可以解决你的问题
private void textBox1_TextChanged(object sender, EventArgs e)
{
if (textBox1.Text.Length > 0)
{
textBox1.Text = Convert.ToDouble(textBox1.Text).ToString("N0");
textBox1.SelectionStart = textBox1.Text.Length;
}
}
【讨论】: