SSIS , counting files in a folder using script task, looping the task untill number of files reaches 25 - ssis-2012

Question

Need to develop a package which should read number of files from ftp/folder. If the count is less than 25 , keep looping, Go to the next task once the count reaches 25.
What i tried is:
I used a script task, created few variable and variable have file count(Successfully). I used expression in precedence constraint for checking if the number of files in a particular folder is 25. if not it wont go to another task. What i cant do is keep the script task looping until the file count becomes 25. I tried using for each loop but couldn't get trough. please suggest.
Please have a look at this. i have 2 script tasks. first one counts and display the number of files in a folder. here is the script for that.
enter code here
public void Main()
{
// TODO: Add your code here
String FolderPath =
Dts.Variables["User::FolderPath"].Value.ToString();
string Prefix =
Dts.Variables["User::prefix"].Value.ToString();
Int32 FileCnt = 0;
var directory = new DirectoryInfo(FolderPath);
FileInfo[] files = directory.GetFiles(Prefix + "*");
//Declare and initilize variables
//Get one Book(Excel file at a time)
foreach (FileInfo file in files)
{
FileCnt += 1;
MessageBox.Show(file.Name);
}
MessageBox.Show(FileCnt.ToString());
Dts.Variables["User::FileCnt"].Value =
Convert.ToInt32(FileCnt);
}
#region ScriptResults declaration
/// <summary>
/// This enum provides a convenient shorthand within the scope of
this class for setting the
/// result of the script.
///
/// This code was generated automatically.
/// </summary>
enum ScriptResults
{
Success = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success,
Failure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure
};
#endregion
}
}
then i edited the precedence constraint and wrote and expression #FileCnt == 25, which means next script task will only be executed when the number of files in the folder is 25. what i want now is that the first script task should be running in a loop until the folder gets 25 file. i think we need to use foreachloop container here. did you get what im looking for now??