如何计算文本文件中的日期数? [英] How to count number of dates in my textfile?

问题描述

如何计算文本文件中的日期数?
假设以大写字母写了3-4个日期，那么告诉我C#代码以获取标签控件中这些日期的计数吗?


thanku

How to count number of dates in my textfile?
suppose in full big letter there are 3-4 dates are written so tell me the c# code to get the count of those dates in label control?


thanku

推荐答案

您可以使用正则表达式匹配日期，然后根据需要使用匹配项.

以下链接包含如何在C#中使用RegExp的示例:
C#中的正则表达式用法 [

You can use Regular Expressions to match the dates and then use the matches as you wish.

The following link contains examples how to use RegExp in C#:
Regular Expressions Usage in C#[^]


BTW, the following regexp might help you:
^([1-9]|0[1-9]|1[012])[- /.]([1-9]|0[1-9]|[12][0-9]|3[01])[- /.][0-9]{4}

在以下位置读取文件:

Read the file in:

string[] lines = File.ReadAllLines(path);

处理每一行:

Process each line:

foreach (string line in lines)
   {
   ...
   }

如果该行包含日期，请对其进行计数:

If the line contains a date, count it:

int count = 0;
...
foreach (string line in lines)
   {
   ...
   count++;
   }

将结果放入标签控件:

Put the result to a label control:

myLabel.text = "Number of dates = " + count.ToString();

确定是否包含日期取决于您:我对您的数据格式一无所知...

Working out if it contains a date is up to you: I do not know anything about your data format...

这篇关于如何计算文本文件中的日期数?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！