why the Operator '!=' cannot be applied to operands of type 'System.DateTime' and 'string' comes?

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C#

com = new SqlCommand("SELECT MAX(createddate) FROM Payout_Master WHERE sponcorid='" + code + "'", con);
            DateTime date = (DateTime)com.ExecuteScalar();
           

            DateTime datenow = DateTime.Now;
            string frmt = "MM/dd/yyyy";
            string datenow1 = datenow.ToString(frmt);
            if(date!=datenow1)

this shows me this following error

Error:
Operator '!=' cannot be applied to operands of type 'System.DateTime' and 'string'
How should i do to remove this error

Posted 22-Nov-12 4:22am

sumit kausalye

Updated 22-Nov-12 4:26am

fjdiewornncalwe

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fjdiewornncalwe · Answer 1 · 2012-11-22T04:28:00

Solution 1

Quite simply, you cannot compare two different data types. ie. A string is not comparable with a DateTime.
In order to do this comparison, you'll need to do this:

C#

if( date != DateTime.Now.Date )...

Posted 22-Nov-12 4:28am

fjdiewornncalwe

*Abhishek Pant* · Answer 2 · 2012-11-22T04:33:00

Solution 2

this can help you
Trouble Comparing a string to a system.datetime[^]

Posted 22-Nov-12 4:33am

Abhishek Pant

Gajendra Yadav · Answer 3 · 2012-11-22T04:37:00

Hi

To compare two date their is a DateTime.Compare Method

You can use this method as shown below:

C#

int value= DateTime.Compare(DateTime date1,DateTime date2)

if return value is Zero then both date are same i.e. (date1==date2)

if return value is Less than zero then date1 is is earlier than date2 i.e. (date1<date2)>

if return value is Greater than zero then date1 is later than date2 i.e.(date1>date2)

I hope this will help you....