如何避免多次运行同一循环？

Question

Here is a big problem for me, because I can't get out of the loop. I got in listDataReport.Count only 1. But in the foreach from beginDate (example: 10/01/2010) to endDate (today), my file writes as times as date are going through from the beginning to the end.

What I want is only one write for the specific date in listDataReport

listDataReport = blReports.GetDataClientes(beginDate, endDate);

string dateSelected = string.Empty;    
while (beginDate < endDate)
{
    foreach (var item in listDataReport)
    {
        FileCreated.WriteLog(item.NmbrCliLeg + "|" + item.NmbCliProf + "|" + item.Namsur + "|" + item.Mail, false);
        dateSelected= item.DateUp;
    }
    beginDate = beginDate.AddDays(1);
}
log.WriteLog("Clients up date: " + dateSelected + ":" + listDataReport.Count);    

It repeats as many days are between beginDate - endDate . And if i only get one Client on listDataReport that happens.

As you can see there's FileCreated.WriteLog creates a .txt which writes the data client here's the problem. In log.WriteLog which creates a .log file there's no problem in that. I'll show what I got from both files.

In log:

---***--- Execution Initiated: 27/03/2015 09:44:40 a.m.
27/03/2015 09:44:50 a.m. - Clients up date 03/19/2015: 1
===***=== Execution Ended: 03/27/2015 09:44:50 a.m.

But now in .txt file (Datefile03272015.txt) :

0123456789|7976967|NAME SURNAME|somemail@mail.com
0123456789|7976967|NAME SURNAME|somemail@mail.com
0123456789|7976967|NAME SURNAME|somemail@mail.com
0123456789|7976967|NAME SURNAME|somemail@mail.com

All the job runs each day and creates a .txt file each day. It doesn't matter the .log file here.

Answer 1

Use the keyword break to break out of a loop:

https://msdn.microsoft.com/en-us/library/ttw7t8t6.aspx

int[] list = [1, 2, 3, 4, 5, 6, 7, 8];

foreach(int item in list)
{
    Console.WriteLine(item);
    if (item == 5)
        break;
}

Output:

1
2
3
4
5