How to convert datetime format to date format in c

问题:

i am working c# windows form application and also in crystal report.i am retriving the date from database in datetime format but i like display date only in report,Is any formula field in crystal report help for me for this problem.Thanks in Advance.

回答1:

If the datetime is in field (not a formula) then you can format it:

1. Right click on the field -> Format Editor
2. Date and Time tab
3. Select date/time formatting you desire (or click customize)

If the datetime is in a formula:

ToText({MyDate}, "dd-MMM-yyyy")
//Displays 31-Jan-2010

or

ToText({MyDate}, "dd-MM-yyyy")
//Displays 31-01-2010

or

ToText({MyDate}, "dd-MM-yy")
//Displays 31-01-10

etc...

回答2:

In crystal report formulafield date function aavailable there pass your date-time format in that You Will get the Date only here

Example: Date({MyTable.dte_QDate})

回答3:

In case the formatting needs to be done on Crystal Report side.

Simple way.

Crystal Report Design Window->Right click on the date field->format Field->Customize the date format per your need.

Works effectively.

回答4:

In selection formula try this

Date(Year({datetimefield}), Month({datetimefield}), Day({datetimefield}))

回答5:

This formula works for me:

// Converts CR TimeDate format to AssignDate for WeightedAverageDate calculation.

Date( Year({DWN00500.BUDDT}), Month({DWN00500.BUDDT}), Day({DWN00500.BUDDT}) ) - CDate(1899, 12, 30)

回答6:

if it is just a format issue use ToShortDateString()

回答7:

There are many ways you can do this. You can just use what is described here or you can do myDate.ToString("dd-MMM-yyyy"); There are plenty of help for this topic in the MSDN documentation.

You could also write you own DateExtension class which will allow you to go something like myDate.ToMyDateFormat();

    public static class DateTimeExtensions
    {
        public static DateTime ToMyDateFormat(this DateTime d)
        {
            return d.ToString("dd-MMM-yyyy");
        }
    }

回答8:

Sometimes the field is not recognized by crystal reports as DATE, so you can add a formula with function: Date({YourField}), And add it to the report, now when you open the format object dialog you will find the date formatting options.