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This property applies only to Date controls and the Date portion of the Date/Time control. Select the Date control type to display only the date input field with a  calendar  icon  calendar icon. Clicking the calendar to choose the date or hand-typing it, will display the date in the format selected. European date formatting is supported. Allowable Date Formats consist of three different seperators (.- or / or .) and three date display formats (DD/MM/YYYY, MM/DD/YYYY, and YYYY/MM/DD). The default value is MM-DD-YYYY.

On a mobile device, the date picker is typically used to provide a date. If you set a default date in your form it must be formatted as YYYY-MM-dd in order for it to display correctly.

The date format choices are shown below:

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Select the Date/Time control type, to display two input fields: one for date entry and one for time entry. Dropdown menus, as described above, provide the selection of the nine allowable date formats for the date portion of the control and eight choices in military and standard time for the time portion. Refer to Date Format and Time Format for details. Default formats When you select Date/Time as the control type, the properties panel will display dropdowns to format the date and time. Refer to Date Format and Time Format for details. Default formats for date and time remain mm-dd-yyyy and hh:mm.    

1. When you enter a date in the date portion of the date/time control (or select the date with the picker), it will automatically fill the time portion of the control with a value for 12:00 AM. The value displayed depends on the time format selected: For Example:.   
   • 00:00 will display if the selected time format is hh:mm
   • 12:00 AM will display if the selected time format is hh:mm – AM/ PM          
   • 00:00:00 will display if the selected time format is hh:mm:ss    
   • 12:00:00 AM will display if the selected time format is hh:mm:ss – AM/ PM      
2. You cannot enter a time value without a date value. 
3. The time input field cannot be labeled. It is recommended that the label for the date portion be descriptive enough to include the time portion. If date and time labels over the appropriate input fields are required, two separate controls can be used or the label for the date portion can be extended over the time input field, as shown in the image below:

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This property applies only to Submit controls. By default  disables the form's submit button until all required fields are filled and contain valid data. See Valid Forms for details of this feature. However, sometimes you may wish to override ' default behavior and allow the user to submit a form even if it is invalid. To do this, uncheck this property.

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Prefix Property

Custom groups with rules included when dropped back onto the same or another form, will contain a special "Prefix" property. The property will automatically be given a unique value if you drop the group onto the same form 2 or more times. This ensures that the group controls have unique element name. You can view the impact the prefix has on the element names by viewing the form's schema or the control's property panel. Using the prefix property, you can write a separate rule to manipulate the 2nd or greater instance of the custom control. Refer to this documentation for the details.

Max Size

The Max Size property is used to set the upper limit for each attachment uploaded using the Upload Control in your forms/flow. It is set to 10Mb in the cloud. In-house customers should refer to the Max Size property for information about configuring this property for an in-house installation.