QueryNodeCollection.Add(QueryNode) Method

Adds the specified query node to the collection.

Namespace: DevExpress.DataAccess.DataFederation

Assembly: DevExpress.DataAccess.v24.1.dll

NuGet Packages: DevExpress.DataAccess, DevExpress.Win.PivotGrid, DevExpress.Win.TreeMap

Declaration

C#

public void Add(
    QueryNode item
)

VB.NET

Public Sub Add(
    item As QueryNode
)

Parameters

Name	Type	Description
item	QueryNode	A query node to add.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the Add(QueryNode) 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#

winforms-dashboard-data-federation/CS/DataFederationExample/Form1.cs#L98

federationDS.Queries.Add(mainQueryCreatedByApi);
federationDS.Queries.Add(mainQueryCreatedByNodeBuilder);

create-a-federated-data-source-at-runtime/CS/FederationDataSourceExample/FederationDataSourceHelper.cs#L36

};
federation.Queries.Add(query);
federation.Fill(new[] { new DevExpress.DataAccess.Sql.QueryParameter("cat", typeof(string), "Seafood") });

reporting-winforms-bind-union-federated-data-source/CS/Reporting-Bind-Report-to-Union-Based-Federated-Data-Source/Form1.cs#L53

var federationDataSource = new FederationDataSource();
federationDataSource.Queries.Add(contactsNode);
// Build the data source schema to display it in the Field List.

data-access-library-create-data-sources-at-runtime/CS/FederationDataSourceSnippets/Code.cs#L33

var federationDataSource = new FederationDataSource();
federationDataSource.Queries.Add(selectNode);
// Build the data source schema to display it in the Field List.

reporting-winforms-bind-join-federated-data-source/CS/Form1.cs#L51

var federationDataSource = new FederationDataSource();
federationDataSource.Queries.Add(selectNode);
// Build the data source schema to display it in the Field List.

VB.NET

winforms-dashboard-data-federation/VB/DataFederationExample/Form1.vb#L94

federationDS.Queries.Add(mainQueryCreatedByApi)
federationDS.Queries.Add(mainQueryCreatedByNodeBuilder)

create-a-federated-data-source-at-runtime/VB/FederationDataSourceExample/FederationDataSourceHelper.vb#L27

query.FilterString = "[Orders.CategoryName] = ?cat"
federation.Queries.Add(query)
federation.Fill( { New DevExpress.DataAccess.Sql.QueryParameter("cat", GetType(String), "Seafood") })

aspnet-web-forms-dashboard-data-federation/VB/AspNetWebFormsDataFederation/Default.aspx.vb#L65

Dim joinQuery As SelectNode = sqlSource.From().Select("OrderDate", "ShipCity", "ShipCountry").Join(excelSource, "[excelSource.OrderID] = [sqlSource.OrderID]").Select("CategoryName", "ProductName", "Extended Price").Join(objectSource, "[objectSource.Country] = [excelSource.Country]").Select("Country", "UnitPrice").Build("Join query")
federationDataSource.Queries.Add(joinQuery)
' Union and UnionAll

reporting-winforms-bind-union-federated-data-source/VB/Reporting-Bind-Report-to-Union-Based-Federated-Data-Source/Form1.vb#L49

Dim federationDataSource = New FederationDataSource()
federationDataSource.Queries.Add(contactsNode)
' Build the data source schema to display it in the Field List.

data-access-library-create-data-sources-at-runtime/VB/FederationDataSourceSnippets/Code.vb#L26

Dim federationDataSource = New FederationDataSource()
federationDataSource.Queries.Add(selectNode)
' Build the data source schema to display it in the Field List.