DataTableCollection.Add Method (DataTable)

Adds the specified DataTable to the collection.

Namespace: System.Data
Assembly: System.Data (in

public void Add (
	DataTable table
public void Add (
	DataTable table
public function Add (
	table : DataTable
Not applicable.



The DataTable object to add.

Exception typeCondition


The value specified for the table is a null reference (Nothing in Visual Basic).


The table already belongs to this collection, or belongs to another collection.


A table in the collection has the same name. The comparison is not case sensitive.

The CollectionChanged event occurs when a table is successfully added to the collection.

The following example creates a DataTable and adds it to the DataTableCollection of a DataSet.

private void AddDataTable()
    // Get the DataTableCollection of a DataGrid 
    // control's DataSet.
    DataTableCollection tables = 

    // Create a new DataTable.
    DataTable table = new DataTable();

    // Code to add columns and rows not shown here.

    // Add the table to the DataTableCollection.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0

Community Additions