Convert File Creation Time to format "dd/MM/yyyy HH:mm:ss"

Question

5.00/5 (1 vote)

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I keep on getting the error "string is not recognized as ValidDateTime" for the below code

foreach (FileInfo FI in FileList)
                    {
                        DateTime filedat = FI.CreationTime.Date;
                        DateTime filedate = Convert.ToDateTime(filedat);
                        string fidate = filedate.ToString(format) ;
                        DateTimePicker filedatepkr = new DateTimePicker();
                        //filedatepkr.CustomFormat = "dd/MM/yyyy";
                        filedatepkr.Text =Convert.ToString(fidate) ;
                        
                       if (DateTime.Compare(filedate, frmdate) >= 0 && (DateTime.Compare(filedate, todate )<= 0))
                        {
                        }
                        DateTime FileCreatDt = File.GetCreationTime(FI.Name);
                    }

~~Please Help!!~~

Posted 4-Feb-11 19:16pm

Eager2Lern

Updated 4-Feb-11 19:18pm

Rajesh Anuhya

v3

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3 solutions

Solution 1

DateTime filedate = Convert.ToDateTime(filedat);
Here you are converting datetime to again datetime which is not needed.

check this

filedatepkr.Text = DateTime.ParseExact(fidate, "dd/MM/yyyy",null);

Posted 4-Feb-11 19:26pm

m@dhu

Comments

Eager2Lern 5-Feb-11 1:56am

foreach (FileInfo FI in FileList)
{
DateTime filedat = FI.CreationTime.Date;
string fidate = filedat.ToString();
DateTimePicker filedatepkr = new DateTimePicker();
//filedatepkr.CustomFormat = "dd/MM/yyyy";
filedatepkr.Text = DateTime.ParseExact(fidate, "dd/MM/yyyy", null);

After this code i get the error
cannot implicitly convert type System.DateTime to String

Please help

m@dhu 5-Feb-11 2:08am

What does that mean you need to convert to string
filedatepkr.Text = DateTime.ParseExact(fidate, "dd/MM/yyyy", null).ToString();

Solution 2

I think these code something confused ,

foreach (FileInfo FI in FileList)
                    {
                        DateTime filedat = FI.CreationTime.Date;
                        DateTime filedate = Convert.ToDateTime(filedat);
                        string fidate = filedate.ToString(format) ;
                        DateTimePicker filedatepkr = new DateTimePicker();
                        //filedatepkr.CustomFormat = "dd/MM/yyyy";
                        filedatepkr.Text =Convert.ToString(fidate) ;

So i want to suggest ,following code

foreach (string F in FileList)
           {

               DateTime filedat = FI.CreationTime.Date;
               DateTime filedate = Convert.ToDateTime(filedat);
               string fidate = filedate.ToString(format);
               DateTimePicker filedatepkr = new DateTimePicker();
               //filedatepkr.CustomFormat = "dd/MM/yyyy";
               filedatepkr.Value = DateTime.Parse(fidate)

It may be helpful
Theingi Win

Posted 4-Feb-11 20:21pm

Theingi Win

Comments

Eager2Lern 5-Feb-11 2:39am

Hi,

I am getting the below error now
filedatepkr.Value = DateTime.Parse(fidate)

String was not recognized as a valid DateTime.

Please help

Eager2Lern 5-Feb-11 2:54am

Please find below the full code

private void ReadButton_Click(object sender, EventArgs e)
{
if (textBox1.Text == "")
{
MessageBox.Show("Folder not selected", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);

return;
}
else
{

string path = textBox1.Text;
if (rad.Checked)
{
string format = "dd/M/yyyy HH:mm:ss";
DateTime frmdate = Convert.ToDateTime(FromDatePkr.Text).Date;
DateTime todate = Convert.ToDateTime(ToDatePkr.Text).Date;
DirectoryInfo Dir = new DirectoryInfo(path);
FileInfo[] FileList = Dir.GetFiles("*.*", SearchOption.AllDirectories);
foreach (FileInfo FI in FileList)
{
DateTime filedat = FI.CreationTime.Date;
string fidate = filedat.ToString(format);
DateTime filedate = DateTime.Parse(fidate);

if (DateTime.Compare(filedate, frmdate) >= 0 && (DateTime.Compare(filedate, todate) <= 0))
{
}

}

}

}
}
Actually i want to convert the file creation time format inorder to work on the compare function in the code

Theingi Win 5-Feb-11 3:15am

May I know your DateTimePicker's Datetime Format,When i testing your code i don't get error but in my code DateTimePicker's Datetime Format is Long.

Thanks your Reply
Theingi Win

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Sergey Alexandrovich Kryukov · Accepted Answer · 2011-02-05T12:47:00

Solution 3

The whole idea working with strings is wrong! The class DateTimePicker expose the property Value of the type DateTime. On this type comparison operators are defined, use them. Compare time values, not strings!

DateTimePicker filedatepkr = new DateTimePicker();
...
foreach (FileInfo FI in FileList)
{
    DateTime filedat = FI.CreationTime.Date;
    DateTime filedate = Convert.ToDateTime(filedat);
    if (filedate > filedatepkr) { /* whatever...  */ }
}

—SA

Posted 5-Feb-11 12:47pm

Sergey Alexandrovich Kryukov

Updated 5-Feb-11 13:43pm

v2

Comments

fjdiewornncalwe 5-Feb-11 19:23pm

My 5. The OP is thinking far too much about this and is trying to reinvent the wheel on this one. This is my choice for the correct answer.

Sergey Alexandrovich Kryukov 5-Feb-11 19:42pm

Thank you, Marcus.
Not quite the wheel and not "inventing" -- not at all, just old lack of understanding basic things...
--SA

Espen Harlinn 6-Feb-11 6:16am

The answer, nice and simple, 5+

Sergey Alexandrovich Kryukov 6-Feb-11 12:11pm

Thank you, Espen.
I was looking at OP's code and all answers in disbelieve: why?
--SA