常用正则表达式
"^\d+$" //非负整数(正整数 + 0)
"^[0-9]*[1-9][0-9]*$" //正整数
"^((-\d+)|(0+))$"//非正整数(负整数 + 0)
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"^\d+(\.\d+)?$" //非负浮点数(正浮点数 + 0)
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"^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$" //负浮点数
"^(-?\d+)(\.\d+)?$" //浮点数
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/^(d{2}|d{4})-((0([1-9]{1}))|(1[1|2]))-(([0-2]([1-9]{1}))|(3[0|1]))$/ // 年-月-日
/^((0([1-9]{1}))|(1[1|2]))/(([0-2]([1-9]{1}))|(3[0|1]))/(d{2}|d{4})$/ // 月/日/年
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"(d+-)?(d{4}-?d{7}|d{3}-?d{8}|^d{7,8})(-d+)?" //电话号码
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首先引入命名空间 using System.Text.RegularExpressions;
验证代码:
if(!Regex.IsMatch(dr[8].ToString().Trim(), "^[0-9]+(.[0-9]*)?$"))//正则表达式
{ Err+="导入第"+i+"行出错,产品数量格式不正确!"; }
else { dr[8] =Convert.ToInt32(double.Parse(dr[8].ToString().Trim()));//将数据转换为Int型保存回去 }