1.å½æ°
[csharp] view plain copy
public static bool IsFloat(string str)
{
string regextext = @"^(-?\d+)(\.\d+)?$";
Regex regex = new Regex(regextext, RegexOptions.None);
return regex.IsMatch(str.Trim());
}
2.è°ç¨
[csharp] view plain copy
if (!IsFloat(textBox11.Text))
{
MessageBox.Show("åºè¯¥æ¯ä¸ä¸ªæ°å", "æ°æ®è¾å
¥é误æ示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
textBox11.SelectAll();
textBox11.Focus();
return;
}
3.注æ
åºå¼å
¥å½å空é´ï¼using System.Text.RegularExpressions;
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