c# datetime conversion

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in have string variable with value -- 9/10/2012 8:13:56 PM
its a MM/dd/yyyy hh:mm:ss tt format

But i want to convert it to

dd/MM/yyyy hh:mm:ss tt

so my code-->

C#

string strtime= getTime(Session["id"].ToString());
string format = "dd/MM/yyyy hh:mm:ss tt";
DateTime dt = DateTime.ParseExact(strtime, format, CultureInfo.InvariantCulture);
string str= dt.ToString(dd/MM/yyyy hh:mm:ss tt);

but its not working

exception :

"String was not recognized as a valid DateTime."
Please help!

Posted 10-Oct-12 1:34am

rohit24c

Updated 10-Oct-12 1:55am

AshishChaudha

v3

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[no name] 10-Oct-12 7:39am

"but its not working ", is completely meaningless and does nothing to describe any kind of a problem.

rohit24c 10-Oct-12 7:42am

its throughing exception
"String was not recognized as a valid DateTime."

MT_ 10-Oct-12 7:49am

I think it is throwing exception at DateTime.ParseExact. Check the answer below.

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Frederico Barbosa · Answer 1 · 2012-10-10T02:11:00

If works if you do the following... of course, you might want to have two distinct infos, one for input and another to output, if you are reading/writing lots of dates.

C#

// Create date time format info
System.Globalization.DateTimeFormatInfo info = 
    new System.Globalization.DateTimeFormatInfo();
            
// Change formats
info.ShortDatePattern = "MM/dd/yyyy";
info.LongTimePattern = "hh:mm:ss tt";

string input = "9/10/2012 8:13:56 PM";

// parse // or try parse if you prefer
DateTime datetime = DateTime.Parse(input, info);

// Change to output format
info.LongDatePattern = "dd/MM/yyyy";

// Get parsed datetime as string
string output = datetime.ToString("dd/MM/yyyy hh:mm:ss tt", info);

Alternatively, if you know the input and output cultures, you can get the formats by calling "someCulture.DateTimeFormat" of the CultureInfo instances.

AshishChaudha · Answer 2 · 2012-10-10T02:09:00

Solution 3

Try this...

C#

string strtime = "9/10/2012 8:13:56 PM ";
       // string format = "dd/MM/yyyy hh:mm:ss tt";
        DateTime dt = Convert.ToDateTime(strtime, ci);
        string str = dt.ToString();
        Response.Write(str);

Thanks

Posted 10-Oct-12 2:09am

AshishChaudha

MT_ · Answer 3 · 2012-10-10T01:41:00

If I understand correctly, the value saved in the session is in MM/dd/yyyy hh:mm:ss tt format.
Hence you need to pass that while trying to do DateTime.ParseExact.

C#

string strtime= getTime(Session["id"].ToString());
string format = "MM/dd/yyyy hh:mm:ss tt";
DateTime dt = DateTime.ParseExact(strtime, format, CultureInfo.InvariantCulture);
string str= dt.ToString(dd/MM/yyyy hh:mm:ss tt);

Hope that helps, if it does, mark it as answer/upvote.
Thanks
Milind

c# datetime conversion

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