define a static method to convert datatime to a formatted string with uesr-defined

public static string DateToString( DateTime dt , string splitter )
{
string sTemp = String.Empty;

if(dt.Month < 10)
{
sTemp += "0";
}
sTemp += dt.Month.ToString();
sTemp += splitter;
if( dt.Day < 10 )
{
sTemp += "0";
}
sTemp += dt.Day.ToString();
sTemp += splitter;
sTemp += dt.Year.ToString();

return sTemp;
}