FilterExpression

Specifies the user-defined filter editor type that will be used. The available options are 'string', 'number', 'boolean', and 'date'.

Specifies the user-defined filter editor format that will be used. See the Filter editor formats documentation.

Specifies a template for the expression value editor input.

Specifies the field that will be used by the user-defined filter.

Specifies the operators that will be available in the order of providing them. If no operators are provided, default operators are used for each filter type.

The default string operators are:

• eq— Is equal to
• neq— Is not equal to
• isnull— Is null
• isnotnull— Is not null
• contains— Contains
• doesnotcontain— Does not contain
• startswith— Starts with
• endswith— Ends with
• isempty— Is empty
• isnotempty— Is not empty

The default number and date operators are:

• eq— Is equals to
• neq— Is not equal to
• isnull— Is null
• isnotnull— Is not null
• gt— Greater than
• gte— Greater than or equal to
• lt— Less than
• lte— Less than or equal to

The boolean operator is always set to eq.

Specifies a custom template for the operator dropdown. When set, the default operator DropDownList is replaced with the provided template. The template receives the current FilterDescriptor as implicit context.

Specifies the title text that will be displayed by the user-defined filter. If the title isn't set, the value passed to field is used.