FunctionCategory Enum

Lists the values that specify categories for functions available in Expression Editors.

Namespace: DevExpress.Data.Filtering

Assembly: DevExpress.Data.v18.1.dll

Declaration

C#

public enum FunctionCategory

VB.NET

Public Enum FunctionCategory

Members

Name	Description
DateTime	Identifies functions that work with date-time values.
Logical	Identifies functions that perform logical operations.
Math	Identifies functions that perform math operations.
Text	Identifies functions that work with strings.
All	Identifies functions that fall into any of the other categories.

Related API Members

The following properties accept/return FunctionCategory values:

Library	Related API Members
Cross-Platform Class Library	ICustomFunctionOperatorBrowsable.Category
eXpress Persistent Objects	IsExactTypeFunction.Category
	IsInstanceOfTypeFunction.Category

Remarks

When implementing a custom function, you specify the function’s category in the ICustomFunctionOperatorBrowsable.Category property implementation.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the FunctionCategory enum.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

reporting-custom-functions-in-the-expression-editor/CS/dxSample/Custom Expression Editor Functions/NewLineFunction.cs#L8

public class NewLineConstant : ICustomFunctionOperatorBrowsable {
    public FunctionCategory Category {
        get {

how-to-register-a-custom-filter-function-and-use-it-in-gridcontrol-e3514/CS/WindowsApplication3/IsDayOffFunction.cs#L23

public FunctionCategory Category
{

Reporting_how-to-use-a-custom-function-in-a-query-expression-t352441/CS/SelectQueryWindowsFormsApplication/StDevOperator.cs#L48

public FunctionCategory Category { get { return FunctionCategory.Math; } }

VB.NET

reporting-custom-functions-in-the-expression-editor/VB/dxSample/Custom Expression Editor Functions/NewLineFunction.vb#L10

Public ReadOnly Property Category() As FunctionCategory Implements ICustomFunctionOperatorBrowsable.Category
    Get

how-to-register-a-custom-filter-function-and-use-it-in-gridcontrol-e3514/VB/WindowsApplication3/IsDayOffFunction.vb#L23

Public ReadOnly Property Category() As FunctionCategory Implements ICustomFunctionOperatorBrowsable.Category
    Get

Reporting_how-to-use-a-custom-function-in-a-query-expression-t352441/VB/SelectQueryWindowsFormsApplication/StDevOperator.vb#L43

Public ReadOnly Property Category() As FunctionCategory Implements ICustomFunctionOperatorBrowsable.Category
    Get