Urgent - Please help with formating date in Visual C# app

This should solve your problem.  Use the custom date time parse method in this post.

class Program

static void Main(string[] args)

DateTime dt = ParseUniqueDateTimeFormat("2007-18-07 23:15");

Console.WriteLine(FormatDate(dt));

Console.ReadLine();

public const string NEWSTRING = "dd/MM/yy HH:mm";

public static string FormatDate(DateTime date) {

return date.ToString(NEWSTRING);

// parse this format into a date time

// "2007-18-07 23:15"

static DateTime ParseUniqueDateTimeFormat(string uniqueDateString)

DateTime result = new DateTime();

try

string[] dateAndTime = uniqueDateString.Split(' ');

string[] dateParams = dateAndTime[0].Trim().Split('-');

string[] timeParams = dateAndTime[1].Trim().Split(':');

int year = Convert.ToInt32(dateParams[0]);

int month = Convert.ToInt32(dateParams[2]);

int day = Convert.ToInt32(dateParams[1]);

int hour = Convert.ToInt32(timeParams[0]);

int minute =Convert.ToInt32(timeParams[1]);

result = new DateTime(year, month, day, hour, minute, 0);

catch (Exception ex)

Console.WriteLine("Couldn't Parse {0}", uniqueDateString);

return result;

Still not sure you are describing the problem correctly.  I tried the following code and it does exactly what you expect.  The problem I think you are having is that .NET can't parse "2007-18-07 23:15" into a DateTime.  It doesn't recognize the format.  You'll need to parse this manually yourself.  In the next reply, I'll show you how to do this.

-Mike

class Program

static void Main(string[] args)

DateTime dt = new DateTime(2007, 7, 18, 23, 15, 0);

Console.WriteLine(FormatDate(dt));

Console.ReadLine();

public const string NEWSTRING = "dd/MM/yy HH:mm";

public static string FormatDate(DateTime date) {

return date.ToString(NEWSTRING);

I want to produce "18/07/07 23:15" at the end.

I read date from grid field where date is "2007-18-07 23:15:01", and want to use FormatDate to produce "18/07/07 23:15" in the textbox. 

   Text1.Text = ClassName.FormatDate(Convert.ToDateTime(dv.Table.Rows[0][0]));

or

    Text1.Text = ClassName.FormatDate("2007-18-07 23:15"); 

ClassName contains

   public const string NEWSTRING = "dd/MM/yy HH:mm";

    public static string FormatDate(DateTime date) {
        return date.ToString(NEWSTRING);
    }

but this code produce this "18-07-07 23:15" and I have many grids with dates like decribed before, so I should change somehow ClassName.FormatDate.

Not sure I understand your question.  DateTime doesn't have a format until you use the ToString method on it.  The DateTime class is a numerical representation of your date.

so DateTime myDateTime = new DateTime(year, month, day, hour, minute, second);

myDateTime.ToString("yyyy-MM-dd HH:mm")  will produce a string with the format "2007-18-07 23:15"  for e.g.