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Showing content from https://docs.microsoft.com/en-us/dotnet/api/system.data.datatablecollection below:

DataTableCollection Class (System.Data) | Microsoft Learn

DataTableCollection Class Definition

Represents the collection of tables for the DataSet.

public ref class DataTableCollection sealed : System::Data::InternalDataCollectionBase

public ref class DataTableCollection : System::Data::InternalDataCollectionBase

[System.ComponentModel.ListBindable(false)]
public sealed class DataTableCollection : System.Data.InternalDataCollectionBase

[System.ComponentModel.ListBindable(false)]
[System.Serializable]
public class DataTableCollection : System.Data.InternalDataCollectionBase

[<System.ComponentModel.ListBindable(false)>]
type DataTableCollection = class
    inherit InternalDataCollectionBase

[<System.ComponentModel.ListBindable(false)>]
[<System.Serializable>]
type DataTableCollection = class
    inherit InternalDataCollectionBase

Public NotInheritable Class DataTableCollection
Inherits InternalDataCollectionBase

Public Class DataTableCollection
Inherits InternalDataCollectionBase

Inheritance

Attributes

Examples

The first procedure in this example retrieves the DataTableCollection of a DataSet and prints the value of each column, in each row, of each table. The second procedure creates a new DataTable with two columns, and adds it to the DataTableCollection.

private void GetTables(DataSet dataSet)
{
    // Get Each DataTable in the DataTableCollection and
    // print each row value.
    foreach (DataTable table in dataSet.Tables)
        foreach (DataRow row in table.Rows)
            foreach (DataColumn column in table.Columns)
                if (row[column] != null)
                    Console.WriteLine(row[column]);
}

private void CreateTable(DataSet dataSet)
{
    DataTable newTable = new DataTable("table");
    newTable.Columns.Add("ID", typeof(int));
    newTable.Columns.Add("Name", typeof(string));
    dataSet.Tables.Add(newTable);
}

Private Sub GetTables(dataSet As DataSet)
   ' Get Each DataTable in the DataTableCollection and 
   ' print each row value.
   Dim table As DataTable
   Dim row As DataRow
   Dim column As DataColumn
   For Each table In dataSet.Tables
      For Each row In table.Rows
         For Each column in table.Columns
            If Not (row(column) Is Nothing) Then
               Console.WriteLine(row(column))
            End If
         Next
      Next
   Next
End Sub

Private Sub CreateTable(dataSet As DataSet)
   Dim newTable As New DataTable("table")
   newTable.Columns.Add("ID", Type.GetType("System.Int32"))
   newTable.Columns.Add("Name", Type.GetType("System.String"))
   dataSet.Tables.Add(newTable)
End Sub

The DataTableCollection contains all the DataTable objects for a particular DataSet. To access the DataTableCollection of a DataSet, use the Tables property.

The DataTableCollection uses methods such as Add, Clear, and Remove to manage the items in the collection.

Use the Contains method to determine whether a particular table (specified by either index or name) is in the collection.

To navigate from one table to another, use the ChildRelations or ParentRelations property of the DataTable to access its collection of DataRelation objects. You can also use the Relations property to navigate through the parent/child relationships of the DataTables in a particular DataSet collection.

Properties Methods Events Extension Methods Thread Safety

This type is safe for multithreaded read operations. You must synchronize any write operations.