Short Date("d") and Long Date("D") Format Specifier in LightSwitch 2012

This article describes the difference between the Short Date("d") and Long Date("D") Format Specifiers in LightSwitch Visual Studio 2012.

Short Date ("d") Format Specifier

The "d" standard format specifier is used to represent a custom date and time format string defined by the DateTimeFormatInfo.ShortDatePattern property. The custom format string for the Short Date Format Specifier is "MM/dd/yyyy".

Long Date("D") Format Specifier

The "D" standard format specifier represents a custom date and time format string defined by the DateTimeFormatInfo.ShortDatePattern property. The custom format string for the Short Date Format Specifier is "dddd , dd MMMM yyyy".

Use the following procedure to create a sample showing how to use the Short Date("d") and Long Date("D") Format Specifiers on a Screen.

Step 1

Open the LightSwitch Application in Visual Studio 2012 and go to the Solution Explorer.

Solution Explorer

Right-click on "Data Sources" and choose "Add Table".

Add Table

The table appears in the Table Designer window. Insert the records in the following table.

Employee Table

Step 2

Now once again go to the Solution Explorer, right-click on "Screens" and choose "Add Screen".

Add Screen

The Add New Screen dialog box appears. Select the "Editable Grid Screen" from the Screen Template. Inside the screen information, choose "Employee" under screen data and provide some name to the Screen and click the "OK" button.

Add New Screen

The Screen Designer appears as shown below.

Screen Designer

Press F5 to run the application. Provide the information; we will get the following output. 

Output of Editable Grid Screen

Step 3

Now stop debugging the application. From the Table Designer select the "DOJ" record as shown in the figure below.

Select DOJ from Employee

Then go to the Format Pattern of the Property window in the Table Designer and enter "d" in the format pattern for the Short Date Format Specifier as shown below.


Short Date Format Pattern Properties

Once again press F5 to run the application. This time we will get the following output.

Short Date Pattern Output

Step 4

Once again stop debugging the application and 
select the "DOJ" record from the table.

Select DOJ from Employee

Now go to the Format Pattern of the Property window in the Table Designer and this time enter "D" in the format pattern for Long Date Format Specifier as shown below.

Long Date Format Pattern Properties

Once again press F5 to run the application. This time we will get the following output.

Long Date Format Pattern Output