DataSet Constructors

Initializes a new instance of the DataSet class.

public:
 DataSet();

public DataSet ();

Public Sub New ()

Examples

The following example creates a new DataSet, and adds two DataTable objects to it.

Private Sub CreateDataSet()
    Dim dataSet As New DataSet()

    ' Create two DataTable objects using a function.
    Dim table1 As DataTable = MakeTable("idTable1", "thing1")
    Dim table2 As DataTable = MakeTable("idTable2", "thing2")
    dataSet.Tables.Add(table1)
    dataSet.Tables.Add(table2)
    Console.WriteLine(dataSet.Tables.Count)
End Sub
 
 
Private Function MakeTable(c1Name As String, _
    c2Name As String) As DataTable
    Dim table As New DataTable
    
    ' Add two DataColumns
    Dim column As New DataColumn( _
        c1Name, System.Type.GetType("System.Integer"))
    table.Columns.Add(column)
    column = New DataColumn(c2Name, _
        System.Type.GetType("System.String"))
    MakeTable = table
End Function

Remarks

This implementation of the DataSet constructor takes no parameters, and creates a default name, "NewDataSet," for the new instance.

A name for the DataSet is required to ensure that the XML representation of the DataSet always has a name for the document element, which is the highest-level element in a schema definition.

See also

• DataTableCollection
• Using DataSets in ADO.NET

Initializes a new instance of a DataSet class with the given name.

public:
 DataSet(System::String ^ dataSetName);

public DataSet (string dataSetName);

new System.Data.DataSet : string -> System.Data.DataSet

Public Sub New (dataSetName As String)

Parameters

Examples

The following example creates a new DataSet, to which two DataTable objects are added.

Private Sub CreateDataSet()
    Dim  dataSet As New DataSet("aNewDataSet")

    ' Create two DataTable objects using a function.
    Dim table1 As DataTable = MakeTable("idTable1", "thing1")
    Dim table2 As DataTable = MakeTable("idTable2", "thing2")

    dataSet.Tables.Add(table1)
    dataSet.Tables.Add(table2)
    Console.WriteLine(dataSet.DataSetName, dataSet.Tables.Count)
End Sub


Private Function MakeTable(c1Name As String, c2Name As String) _
    As DataTable
    Dim table As New DataTable
    
    ' Add two DataColumns
    Dim column As New DataColumn( _
        c1Name, System.Type.GetType("System.Integer"))
    table.Columns.Add(column)
    column = New DataColumn(c2Name, _
        System.Type.GetType("System.String"))
    table.Columns.Add(column)
    MakeTable = table
End Function

Remarks

A name for the DataSet is required to ensure that the XML representation of the DataSet always has a name for the document element, which is the highest level element in a schema definition.

See also

• DataSetName
• DataTableCollection
• Using DataSets in ADO.NET

Initializes a new instance of a DataSet class that has the given serialization information and context.

protected:
 DataSet(System::Runtime::Serialization::SerializationInfo ^ info, System::Runtime::Serialization::StreamingContext context);

protected DataSet (System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context);

new System.Data.DataSet : System.Runtime.Serialization.SerializationInfo * System.Runtime.Serialization.StreamingContext -> System.Data.DataSet

Protected Sub New (info As SerializationInfo, context As StreamingContext)

Parameters

Remarks

Initializes a new instance of the DataSet class.

protected:
 DataSet(System::Runtime::Serialization::SerializationInfo ^ info, System::Runtime::Serialization::StreamingContext context, bool ConstructSchema);

protected DataSet (System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context, bool ConstructSchema);

new System.Data.DataSet : System.Runtime.Serialization.SerializationInfo * System.Runtime.Serialization.StreamingContext * bool -> System.Data.DataSet

Protected Sub New (info As SerializationInfo, context As StreamingContext, ConstructSchema As Boolean)

Parameters

Remarks