DataSet Constructors
Definition
Important
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Initializes a new instance of the DataSet class.
Overloads
DataSet() |
Initializes a new instance of the DataSet class. |
DataSet(String) |
Initializes a new instance of the DataSet class with the given name. |
DataSet(SerializationInfo, StreamingContext) |
Obsolete.
Initializes a new instance of the DataSet class with serialized data. |
DataSet(SerializationInfo, StreamingContext, Boolean) |
Obsolete.
Initializes a new instance of the DataSet class with serialized data. |
DataSet()
- Source:
- DataSet.cs
- Source:
- DataSet.cs
- Source:
- DataSet.cs
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
Applies to
DataSet(String)
- Source:
- DataSet.cs
- Source:
- DataSet.cs
- Source:
- DataSet.cs
Initializes a new instance of the 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
Applies to
DataSet(SerializationInfo, StreamingContext)
- Source:
- DataSet.cs
- Source:
- DataSet.cs
- Source:
- DataSet.cs
Caution
This API supports obsolete formatter-based serialization. It should not be called or extended by application code.
Initializes a new instance of the DataSet class with serialized data.
protected:
DataSet(System::Runtime::Serialization::SerializationInfo ^ info, System::Runtime::Serialization::StreamingContext context);
protected DataSet (System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context);
[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
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
[<System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
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
- info
- SerializationInfo
The serialized data for the data set.
- context
- StreamingContext
Contextual information about the serialized stream.
- Attributes
Exceptions
.NET 7 and later versions only: info
contains binary data.
Remarks
Important
Using an instance of this object with untrusted data is a security risk. Use this object only with trusted data. For more information, see Validate All Inputs.
Applies to
DataSet(SerializationInfo, StreamingContext, Boolean)
- Source:
- DataSet.cs
- Source:
- DataSet.cs
- Source:
- DataSet.cs
Caution
This API supports obsolete formatter-based serialization. It should not be called or extended by application code.
Initializes a new instance of the DataSet class with serialized data.
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);
[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
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
[<System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
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
- info
- SerializationInfo
The serialized data for the data set.
- context
- StreamingContext
Contextual information about the serialized stream.
- ConstructSchema
- Boolean
- Attributes
Exceptions
.NET 7 and later versions only: info
contains binary data.
Remarks
Important
Using an instance of this object with untrusted data is a security risk. Use this object only with trusted data. For more information, see Validate All Inputs.
Applies to
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