Templates > VpeGetTplFieldIsNull

Tests whether a Field has a null-value. A field has a null-value after calling VpeClearTplFields or after explicitly assigning a null-value to a Field by either calling VpeSetFieldToNull or VpeSetTplFieldToNull.

int VpeGetTplFieldIsNull(

VpeHandle hTemplate,

LPCSTR data_source_prefix,

LPCSTR field_name

)

VpeHandle hTemplate

Template Handle

LPCSTR data_source_prefix

prefix of the Data Source, this is the unique name of a Data Source as defined in dycodoc

LPCSTR field_name

name of the Data Source Field

Returns:

Value	Description
True	the field has a null-value
False	the field has not a null-value or the field was not found

Example:

VpeGetTplFieldIsNull(hTpl, "Sample2", "Recipient:Company");