XPDictionary.QueryClassInfo(Type) Method

When implemented by a class, returns the persistent class metadata information for the specified class type.

Namespace: DevExpress.Xpo.Metadata

Assembly: DevExpress.Xpo.v19.2.dll

Declaration

C#

public abstract XPClassInfo QueryClassInfo(
    Type classType
)

VB.NET

Public MustOverride Function QueryClassInfo(
    classType As Type
) As XPClassInfo

Parameters

Name	Type	Description
classType	Type	The class type.

Returns

Type	Description
XPClassInfo	The XPClassInfo object for the specified class type or null reference (Nothing in Visual Basic) when the metadata information for the corresponding class cannot be obtained.

Related GitHub Examples

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

XPO_how-to-create-an-xpclassinfo-descendant-to-dynamically-build-a-persistent-class-structure-e1729/CS/DynamicDataTableClassInfo.cs#L15

if (table.PrimaryKey.Length != 1) throw new NotSupportedException();
baseClassCore = dictionary.QueryClassInfo(typeof(XPDataTableObject));
tableNameCore = table.TableName;

XPO_how-to-generate-persistent-classes-at-runtime-based-on-a-dataset-e1198/CS/WindowsApplication4/Form1.cs#L25

DBTable table = tables[0];
XPClassInfo info = XpoDefault.Dictionary.CreateClass(XpoDefault.Dictionary.QueryClassInfo(baseType), table.Name);
string key = table.PrimaryKey.Columns[0];

VB.NET

XPO_how-to-create-an-xpclassinfo-descendant-to-dynamically-build-a-persistent-class-structure-e1729/VB/DynamicDataTableClassInfo.vb#L19

End If
baseClassCore = dictionary.QueryClassInfo(GetType(XPDataTableObject))
tableNameCore = table.TableName

XPO_how-to-generate-persistent-classes-at-runtime-based-on-a-dataset-e1198/VB/WindowsApplication4/Form1.vb#L24

Dim table As DBTable = tables(0)
Dim info As XPClassInfo = XpoDefault.Dictionary.CreateClass(XpoDefault.Dictionary.QueryClassInfo(baseType), table.Name)
Dim key As String = table.PrimaryKey.Columns(0)