Rediger

Del via

DataRow.GetParentRows Method

  • Reference

Definition

Namespace:
System.Data
Assembly:
System.Data.Common.dll
Assembly:
System.Data.dll
Assembly:
netstandard.dll

Gets the parent rows of a DataRow.

Overloads

GetParentRows(DataRelation, DataRowVersion)

Gets the parent rows of a DataRow using the specified DataRelation, and DataRowVersion.
GetParentRows(DataRelation)

Gets the parent rows of a DataRow using the specified DataRelation.
GetParentRows(String)

Gets the parent rows of a DataRow using the specified RelationName of a DataRelation.
GetParentRows(String, DataRowVersion)

Gets the parent rows of a DataRow using the specified RelationName of a DataRelation, and DataRowVersion.

GetParentRows(DataRelation, DataRowVersion)

Source:
DataRow.cs
Source:
DataRow.cs
Source:
DataRow.cs

Gets the parent rows of a DataRow using the specified DataRelation, and DataRowVersion.

public:
 cli::array <System::Data::DataRow ^> ^ GetParentRows(System::Data::DataRelation ^ relation, System::Data::DataRowVersion version);
public System.Data.DataRow[] GetParentRows (System.Data.DataRelation? relation, System.Data.DataRowVersion version);
public System.Data.DataRow[] GetParentRows (System.Data.DataRelation relation, System.Data.DataRowVersion version);
member this.GetParentRows : System.Data.DataRelation * System.Data.DataRowVersion -> System.Data.DataRow[]
Public Function GetParentRows (relation As DataRelation, version As DataRowVersion) As DataRow()

Parameters

relation
DataRelation

The DataRelation to use.

version
DataRowVersion

One of the DataRowVersion values specifying the version of the data to get.

Returns

DataRow[]

An array of DataRow objects or an array of length zero.

Exceptions

ArgumentException

The DataRelation does not belong to this row's DataSet.

ArgumentNullException

The row is null.

InvalidConstraintException

The relation's child table is not the table the row belongs to.

RowNotInTableException

The row does not belong to a DataTable.

VersionNotFoundException

The row does not have the requested DataRowVersion.

Examples

The following example uses the GetParentRows to return the child DataRow objects for every child DataRelation in a DataTable. The value of each column in the row is then printed.

Private Sub GetChildRowsFromDataRelation(table As DataTable, ver As DataRowVersion)
    Dim relation As DataRelation
    Dim arrRows() As DataRow
    Dim row As DataRow
    Dim i As Integer
    Dim column As DataColumn 
 
    For Each relation In table.ParentRelations
      For Each row In table.Rows
          arrRows = row.GetParentRows(relation, ver)
          ' Print values of rows.
          For i = 0 To arrRows.GetUpperBound(0)
             For Each column in table.Columns
                Console.WriteLine(arrRows(i)(column.ColumnName))
             Next column
          Next i
       Next row
    Next relation
End Sub

Remarks

In a DataSet, the collection of all parent DataRelation objects for the data set is returned by the GetParentRows method.

The DataTable also contains a collection of DataRelation objects, returned by the ParentRelations property.

Use the HasVersion property to determine whether the DataRowVersion that you want exists.

See also

Applies to

GetParentRows(DataRelation)

Source:
DataRow.cs
Source:
DataRow.cs
Source:
DataRow.cs

Gets the parent rows of a DataRow using the specified DataRelation.

public:
 cli::array <System::Data::DataRow ^> ^ GetParentRows(System::Data::DataRelation ^ relation);
public System.Data.DataRow[] GetParentRows (System.Data.DataRelation? relation);
public System.Data.DataRow[] GetParentRows (System.Data.DataRelation relation);
member this.GetParentRows : System.Data.DataRelation -> System.Data.DataRow[]
Public Function GetParentRows (relation As DataRelation) As DataRow()

Parameters

relation
DataRelation

The DataRelation to use.

Returns

DataRow[]

An array of DataRow objects or an array of length zero.

Exceptions

ArgumentException

The DataRelation does not belong to this row's DataSet.

ArgumentNullException

The row is null.

InvalidConstraintException

The relation's child table is not the table the row belongs to.

RowNotInTableException

The row does not belong to a DataTable.

Examples

The following example uses the GetParentRows to return the child DataRow objects for every child DataRelation in a DataTable. The value of each column in the row is then printed.

Private Sub GetChildRowsFromDataRelation(table As DataTable)
    Dim relation As DataRelation
    Dim arrRows() As DataRow
    Dim row As DataRow
    Dim i As Integer
    Dim column As DataColumn 
 
    For Each relation In table.ParentRelations
      For Each row In table.Rows
          arrRows = row.GetParentRows(relation)
          ' Print values of rows.
          For i = 0 To arrRows.GetUpperBound(0)
             For Each column in table.Columns
                Console.WriteLine(arrRows(i)(column.ColumnName))
             Next column
          Next i
       Next row
    Next relation
 End Sub

Remarks

In a DataSet, the collection of all parent DataRelation objects for the data set is returned by the GetParentRows method.

The DataTable also contains a collection of DataRelation objects, returned by the ParentRelations property.

See also

Applies to

GetParentRows(String)

Source:
DataRow.cs
Source:
DataRow.cs
Source:
DataRow.cs

Gets the parent rows of a DataRow using the specified RelationName of a DataRelation.

public:
 cli::array <System::Data::DataRow ^> ^ GetParentRows(System::String ^ relationName);
public System.Data.DataRow[] GetParentRows (string? relationName);
public System.Data.DataRow[] GetParentRows (string relationName);
member this.GetParentRows : string -> System.Data.DataRow[]
Public Function GetParentRows (relationName As String) As DataRow()

Parameters

relationName
String

The RelationName of a DataRelation.

Returns

DataRow[]

An array of DataRow objects or an array of length zero.

Exceptions

ArgumentException

The relation and row do not belong to the same table.

RowNotInTableException

The row does not belong to the table.

Remarks

In a DataSet, the collection of all parent DataRelation objects for the data set is returned by the GetParentRows method.

The DataTable also contains a collection of DataRelation objects, returned by the ParentRelations property.

Applies to

GetParentRows(String, DataRowVersion)

Source:
DataRow.cs
Source:
DataRow.cs
Source:
DataRow.cs

Gets the parent rows of a DataRow using the specified RelationName of a DataRelation, and DataRowVersion.

public:
 cli::array <System::Data::DataRow ^> ^ GetParentRows(System::String ^ relationName, System::Data::DataRowVersion version);
public System.Data.DataRow[] GetParentRows (string? relationName, System.Data.DataRowVersion version);
public System.Data.DataRow[] GetParentRows (string relationName, System.Data.DataRowVersion version);
member this.GetParentRows : string * System.Data.DataRowVersion -> System.Data.DataRow[]
Public Function GetParentRows (relationName As String, version As DataRowVersion) As DataRow()

Parameters

relationName
String

The RelationName of a DataRelation.

version
DataRowVersion

One of the DataRowVersion values specifying the version of the data to get. Possible values are Default, Original, Current, and Proposed.

Returns

DataRow[]

An array of DataRow objects or an array of length zero.

Exceptions

ArgumentException

The relation and row do not belong to the same table.

ArgumentNullException

The relation is null.

RowNotInTableException

The row does not belong to the table.

VersionNotFoundException

The row does not have the requested DataRowVersion.

Remarks

In a DataSet, the collection of all parent DataRelation objects for the data set is returned by the GetParentRows method.

The DataTable also contains a collection of DataRelation objects, returned by the ParentRelations property.

Use the HasVersion property to determine whether the DataRowVersion that you want exists.

Applies to