FunctionOperator.OperatorType Field

The type of the function the operator uses to manipulate with its operands.

Namespace: DevExpress.Data.Filtering

Assembly: DevExpress.XamarinForms.Core.dll

Declaration

public FunctionOperatorType OperatorType

Field Value

Type
FunctionOperatorType

Related GitHub Examples

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

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#

how-to-make-the-auto-filter-rows-filter-accent-insensitive-e5021/CS/DxSample/Filtering/GridFilterSubstitutor.cs#L15

protected override CriteriaOperator VisitFunction(FunctionOperator theOperator) {
    if (theOperator.OperatorType == FunctionOperatorType.StartsWith ||
        theOperator.OperatorType == FunctionOperatorType.EndsWith ||

XDL_how-to-delete-all-criteria-corresponding-to-a-particular-field-from-criteriaoperator-e3396/CS/WindowsApplication3/CriteriaHelper.cs#L65

    }
    return new FunctionOperator(theOperator.OperatorType, operators);
}

XDL_how-to-create-a-custom-converter-to-convert-the-criteriaoperator-to-the-systemstring-type-e3347/CS/CriteriaVisitorExample/CustomCriteriaToStringParser.cs#L49

    parameters.Add(operand.Accept(this));
return string.Format("{0}({1})", GetFunctionName(theOperator.OperatorType),
    string.Join(", ", parameters.ToArray()));

how-to-customize-the-expression-editor-t501883/CS/WindowsFormsApplication1/Form1.cs#L103

public override void Visit(FunctionOperator theOperator) {
    if (theOperator.OperatorType == FunctionOperatorType.Now) {
        this.errors.Add(new CriteriaValidatorError("Invalid function: now()"));

VB.NET

how-to-make-the-auto-filter-rows-filter-accent-insensitive-e5021/VB/DxSample/Filtering/GridFilterSubstitutor.vb#L16

Protected Overrides Function VisitFunction(ByVal theOperator As FunctionOperator) As CriteriaOperator
    If theOperator.OperatorType = FunctionOperatorType.StartsWith OrElse theOperator.OperatorType = FunctionOperatorType.EndsWith OrElse theOperator.OperatorType = FunctionOperatorType.Contains Then
        Return New FunctionOperator(theOperator.OperatorType, GridFilterSubstitutor.WrapIntoCustomFunction(theOperator.Operands(0)), GridFilterSubstitutor.WrapIntoCustomFunction(theOperator.Operands(1)))

XDL_how-to-delete-all-criteria-corresponding-to-a-particular-field-from-criteriaoperator-e3396/VB/WindowsApplication3/CriteriaHelper.vb#L80

    Next op
    Return New FunctionOperator(theOperator.OperatorType, operators)
End Function

XDL_how-to-create-a-custom-converter-to-convert-the-criteriaoperator-to-the-systemstring-type-e3347/VB/CriteriaVisitorExample/CustomCriteriaToStringParser.vb#L68

    Next operand
    Return String.Format("{0}({1})", GetFunctionName(theOperator.OperatorType), String.Join(", ", parameters.ToArray()))
End Function

how-to-customize-the-expression-editor-t501883/VB/WindowsFormsApplication1/Form1.vb#L111

Public Overrides Sub Visit(ByVal theOperator As FunctionOperator)
    If theOperator.OperatorType = FunctionOperatorType.Now Then
        Me.errors.Add(New CriteriaValidatorError("Invalid function: now()"))