CriteriaOperator.ToString(CriteriaOperator) Method

Converts the specified expression into its equivalent string in VB style.

Namespace: DevExpress.Data.Filtering

Assembly: DevExpress.Data.v18.2.dll

Declaration

C#

public static string ToString(
    CriteriaOperator criteria
)

VB.NET

Public Shared Function ToString(
    criteria As CriteriaOperator
) As String

Parameters

Name	Type	Description
criteria	CriteriaOperator	A CriteriaOperator object that represents the expression to convert.

Returns

Type	Description
String	A string representation of the specified expression.

Remarks

To convert the string representation of an expression into its CriteriaOperator equivalent, use the CriteriaOperator.Parse method.

Note

The ToString method returns a string representation of the criteria which can be displayed in UI or saved in application log. However, this string is actually not SQL and cannot be considered as such .

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the ToString(CriteriaOperator) method.

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#

outlook-inspired-app-ef-data-model-only-t201656/CS/DevExpress.OutlookInspiredApp/Filtering/ViewModel/FilterTreeViewModel.cs#L137

FilterInfoList SaveToSettings(ObservableCollection<FilterItem> filters) {
    return new FilterInfoList(filters.Select(fi => new FilterInfo { Name = fi.Name, FilterCriteria = CriteriaOperator.ToString(fi.FilterCriteria) }));
}

hybrid-app-ef-data-model-only-t201658/CS/DevExpress.HybridApp/Filtering/ViewModel/FilterTreeViewModel.cs#L137

FilterInfoList SaveToSettings(ObservableCollection<FilterItem> filters) {
    return new FilterInfoList(filters.Select(fi => new FilterInfo { Name = fi.Name, FilterCriteria = CriteriaOperator.ToString(fi.FilterCriteria) }));
}

gridview-how-to-use-a-built-in-context-menu-to-display-summaries-in-custom-binding-mode-t243497/CS/SummaryCustomDataBinding/Models/CustomBindingModel.cs#L105

    );
    return query.ApplyFilter(CriteriaOperator.ToString(criteria));
}

VB.NET

how-to-use-gridlookup-in-custom-data-binding-mode-t265303/VB/GridLookupCustomBinding/Models/CustomBindingModel.vb#L71

    Dim criteria = GroupOperator.And(groupInfoList.Select(Function(i) New BinaryOperator(i.FieldName, i.KeyValue, BinaryOperatorType.Equal)))
    Return query.ApplyFilter(CriteriaOperator.ToString(criteria))
End Function

gridview-how-to-use-a-built-in-context-menu-to-display-summaries-in-custom-binding-mode-t243497/VB/SummaryCustomDataBinding/Models/CustomBindingModel.vb#L82

    Dim criteria = GroupOperator.And(groupInfoList.Select(Function(i) New BinaryOperator(i.FieldName, i.KeyValue, BinaryOperatorType.Equal)))
    Return query.ApplyFilter(CriteriaOperator.ToString(criteria))
End Function