ExtractSourceOptions.Filter Property

Specifies the logical expression that filters rows to be included in the extract data source.

Namespace: DevExpress.DashboardCommon

Assembly: DevExpress.Dashboard.v23.2.Core.dll

NuGet Package: DevExpress.Dashboard.Core

Declaration

C#

[Browsable(true)]
[DefaultValue(null)]
public string Filter { get; set; }

VB.NET

<DefaultValue(Nothing)>
<Browsable(True)>
Public Property Filter As String

Property Value

Type	Default	Description
String	null	The logical expression that filters rows to be included in the extract data source.

Property Paths

You can access this nested property as listed below:

Object Type	Path to Filter
DashboardExtractDataSource	.ExtractSourceOptions .Filter

Remarks

You can limit data that is included in a data extract. For this, create an expression that specifies which rows should be included in the data extract from the original data source. Then, assign the expression to the Filter property.

Use the DashboardExtractDataSource.Filter property to filter data that is displayed in a dashboard.

Example

The following code sample shows how to create a data extract from the Excel data source and filter the extracted data:

ExtractSourceOptions.Filter

Specifies the [CategoryName] = 'Beverages' expression. This expression allows you to include only rows related to the Beverages category in the data extract.

DashboardExtractDataSource.Filter

Filters data loaded to a dashboard from the created extract data source. The following expressions allows you to display only the Chai product: [ProductName] = 'Chai'.

As a result, the Grid dashboard item displays the sales of the Chai product from the Beverages category for each seller:

DesignerForm1.cs

using DevExpress.DashboardCommon;

namespace ExtractFiltering {
    public partial class DesignerForm1 : DevExpress.XtraBars.Ribbon.RibbonForm {
        public DesignerForm1() {
            InitializeComponent();
            dashboardDesigner.CreateRibbon();
            dashboardDesigner.LoadDashboard(@"Dashboards\dashboard1.xml");
            // Creates an origin Excel Data Source.
            DashboardExcelDataSource excelDataSource = new DashboardExcelDataSource() {
                FileName = @"..\..\Data\SalesPerson2.xlsx",
                SourceOptions = new DevExpress.DataAccess.Excel.ExcelSourceOptions (
                new DevExpress.DataAccess.Excel.ExcelWorksheetSettings() {
                    WorksheetName = "Sheet1",
                })
            };
            // Creates a data extract based on the Excel Data Source.
            DashboardExtractDataSource dataExtract = new DashboardExtractDataSource();
            dataExtract.ExtractSourceOptions.DataSource = excelDataSource;
            dataExtract.FileName = @"..\..\Data\Extract1.dat";
            // Includes only "Beverages" rows from the "CategoryName" table to the Extract Data Source.
            dataExtract.ExtractSourceOptions.Filter = "[CategoryName] = 'Beverages'";
            // Limits displayed products from the "Beverages" category to "Chai".
            dataExtract.Filter = "[ProductName] = 'Chai'";
            dataExtract.UpdateExtractFile();
            // Adds the Extract Data Source to the dashboard. 
            dashboardDesigner.Dashboard.DataSources.Add(dataExtract);
        }
    }
}

DesignerForm1.vb

Imports DevExpress.DashboardCommon

Namespace ExtractFiltering
    Partial Public Class DesignerForm1
        Inherits DevExpress.XtraBars.Ribbon.RibbonForm

        Public Sub New()
            InitializeComponent()
            dashboardDesigner.CreateRibbon()
            dashboardDesigner.LoadDashboard("Dashboards\dashboard1.xml")
            ' Creates an origin Excel Data Source.
            Dim excelDataSource As New DashboardExcelDataSource() With {
                .FileName = "..\..\Data\SalesPerson2.xlsx",
                .SourceOptions = New DevExpress.DataAccess.Excel.ExcelSourceOptions(New DevExpress.DataAccess.Excel.ExcelWorksheetSettings() With {.WorksheetName = "Sheet1"})
            }
            ' Creates a data extract based on the Excel Data Source.
            Dim dataExtract As New DashboardExtractDataSource()
            dataExtract.ExtractSourceOptions.DataSource = excelDataSource
            dataExtract.FileName = "..\..\Data\Extract1.dat"
            ' Includes only "Beverages" rows from the "CategoryName" table to the Extract Data Source.
            dataExtract.ExtractSourceOptions.Filter = "[CategoryName] = 'Beverages'"
            ' Limits displayed products from the "Beverages" category to "Chai".
            dataExtract.Filter = "[ProductName] = 'Chai'"
            dataExtract.UpdateExtractFile()
            ' Adds the Extract Data Source to the dashboard.
            dashboardDesigner.Dashboard.DataSources.Add(dataExtract)
        End Sub
    End Class
End Namespace

Refer to the following topic for more information on how to build filter criteria: Expression Constants, Operators, and Functions.

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the Filter property.

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#

winforms-dashboard-data-extract-filtering/CS/ExtractFiltering/DesignerForm1.cs#L22

// Includes only "Beverages" rows from the "CategoryName" table to the Extract Data Source.
dataExtract.ExtractSourceOptions.Filter = "[CategoryName] = 'Beverages'";
// Limits displayed products from the "Beverages" category to "Chai".

VB.NET

winforms-dashboard-data-extract-filtering/VB/ExtractFiltering/DesignerForm1.vb#L21

' Includes only "Beverages" rows from the "CategoryName" table to the Extract Data Source.
dataExtract.ExtractSourceOptions.Filter = "[CategoryName] = 'Beverages'"
' Limits displayed products from the "Beverages" category to "Chai".