用于验证文本框的正则表达式。 [英] Regex expression to validate textbox.

问题描述

我试图在点击按钮时使用相同的技术，但我面临的问题是年份大于当年，如果我错过了什么，请你看看吗？

  private   static  Regex exprNumber =  new 正则表达式（  ^（405 | 505）（？19 [5 -9] [0-9] | [2-9] [0-9] {3}）[0-9] {6} $）; 
 
  if （txtsfn.Text！=  && txtlrn.Text！=  & & txtovrbn.Text！= ' '&& txtovrts.Text！=  && txtfpfn.Text！=  && txtfpln.Text！=   && txtfpfn.Text.Length >  =  2 && txtfpln .Text.Length >  =  2 && txtsfn.Text.Length ==  13 && txtlrn.Text.Length ==  13 ）
 {
  //   m.Groups [year] .Value将包含成功的年份 
  //  如果匹配失败则为空 
匹配m = exprNumber.Match（txtsfn.Text）; 
  int  testedYear =  0 ; 
  int  .TryParse（m.Groups [year] .Value， out  testedYear）; 
  int  currentYear = DateTime.Now.Year; 
 
  if （！m.Success || testedYear >  currentYear）
 {
 txtsfn.Focus（）;  //  将焦点设置为应该 
} 
}的控件

验证工作正常。



任何帮助都表示赞赏。



谢谢。

解决方案

）;

if （txtsfn.Text！= & ;& txtlrn.Text！= && txtovrbn.Text！= ' '&& txtovrts.Text！= && txtfpfn.Text！= && txtfpln.Text！= && txtfpfn。 Text.Length > = 2 && txtfpln.Text.Length > = 2 && txtsfn.Text.Length == 13 && txtlrn.Text.Length == 13 ）
{
// m.Groups [year] .Value将包含成功的年份
// 如果匹配失败则为空
匹配m = exprNumber.Match（txtsfn.Text）;
int testedYear = 0 ;
int .TryParse（m.Groups [year] .Value， out testedYear）;
int currentYear = DateTime.Now.Year;

if （！m.Success || testedYear > currentYear）
{
txtsfn.Focus（）; // 将焦点设置为应该
}
}的控件

验证工作正常。



任何帮助都表示赞赏。



谢谢。

首先，您可以将开头的大量if语句更改为

txtsfn。文本！=和txtsfn.Text.Length == 13将由正则表达式处理。



然后你忘了实际添加一个组名到正则表达式。

 私人 静态 Regex exprNumber =  new 正则表达式（  ^（405 | 505 ）（19 [5-9] [0-9] | [2-9] [0-9] {3}）[0-9] {6} 

）;

应该是

  private   static  Regex exprNumber =  new 正则表达式（  ^（405 | 505）（小于？年>（19 [5-9] [0-9] | [2-9] [0-9] {3}））[0-9] {6 } 

I am trying to use same technique on click of a button, but I am facing issues with year greater than current year, Can you please have a look, if I missed something?

private static Regex exprNumber = new Regex("^(405|505)(?19[5-9][0-9]|[2-9][0-9]{3})[0-9]{6}$");

if (txtsfn.Text != "" && txtlrn.Text !="" && txtovrbn.Text != '' && txtovrts.Text != "" && txtfpfn.Text != "" && txtfpln.Text != "" && txtfpfn.Text.Length >= 2 && txtfpln.Text.Length >= 2 &&txtsfn.Text.Length == 13 && txtlrn.Text.Length == 13)
{
    // m.Groups[year].Value will contain the year upon success
    // and be empty if the match fails
    Match m = exprNumber.Match(txtsfn.Text);
    int testedYear = 0;
    int.TryParse(m.Groups[year].Value, out testedYear);
    int currentYear = DateTime.Now.Year;
    
    if (!m.Success || testedYear > currentYear)
    {
        txtsfn.Focus(); // Set focus to the control that should be 
    }
}

It works fine with validating.

Any help is appreciated.

Thanks.

解决方案

"); if (txtsfn.Text != "" && txtlrn.Text !="" && txtovrbn.Text != '' && txtovrts.Text != "" && txtfpfn.Text != "" && txtfpln.Text != "" && txtfpfn.Text.Length >= 2 && txtfpln.Text.Length >= 2 &&txtsfn.Text.Length == 13 && txtlrn.Text.Length == 13) { // m.Groups[year].Value will contain the year upon success // and be empty if the match fails Match m = exprNumber.Match(txtsfn.Text); int testedYear = 0; int.TryParse(m.Groups[year].Value, out testedYear); int currentYear = DateTime.Now.Year; if (!m.Success || testedYear > currentYear) { txtsfn.Focus(); // Set focus to the control that should be } }

It works fine with validating.

Any help is appreciated.

Thanks.

First you can change the massive if-statement in the beginning as
txtsfn.Text != "" and txtsfn.Text.Length == 13 will be taken care of by the regex.

Then you have forgotten to actually add a group name to the regular expression.

private static Regex exprNumber = new Regex("^(405|505)(?19[5-9][0-9]|[2-9][0-9]{3})[0-9]{6}

");

should be

private static Regex exprNumber = new Regex("^(405|505)(?<year>(19[5-9][0-9]|[2-9][0-9]{3}))[0-9]{6}

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