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DataTableCollection.RemoveAt Method

Removes the DataTable object at the specified index from the collection.

Namespace: System.Data
Assembly: System.Data (in system.data.dll)

public void RemoveAt (
	int index
)
public void RemoveAt (
	int index
)
public function RemoveAt (
	index : int
)

Parameters

index

The index of the DataTable to remove.

Exception typeCondition

ArgumentException

The collection does not have a table at the specified index.

The CollectionChanged event occurs when a table is successfully removed.

The following example uses the Contains and CanRemove methods to test whether a table exists with the index 10. If so, the RemoveAt method is called to remove the table.

public static void DataTableCollectionRemoveAt()
{
    // Create a DataSet with two tables and then
    // remove the tables from the collection using RemoveAt.
    DataSet dataSet = new DataSet();

    // Create Customer table.
    DataTable customerTable = new DataTable("Customers");
    customerTable.Columns.Add("customerId",
        typeof(int)).AutoIncrement = true;
    customerTable.Columns.Add("name", typeof(string));
    customerTable.PrimaryKey = new DataColumn[] { customerTable.Columns["customerId"] ;

    // Create Orders table.
    DataTable ordersTable = new DataTable("Orders");
    ordersTable.Columns.Add("orderId",
        typeof(int)).AutoIncrement = true;
    ordersTable.Columns.Add("customerId", typeof(int));
    ordersTable.Columns.Add("amount", typeof(double));
    ordersTable.PrimaryKey = new DataColumn[] { ordersTable.Columns["orderId"] ;

    dataSet.Tables.AddRange(new DataTable[] { customerTable, ordersTable );

    // Remove all tables.
    // First check to see if the table can be removed,
    // then remove it.
    //
    // You cannot use a foreach when removing items
    // from a collection.
    while (dataSet.Tables.Count > 0)
    {
        DataTable table = dataSet.Tables[0];
        if (dataSet.Tables.CanRemove(table))
            dataSet.Tables.RemoveAt(0);
        Console.WriteLine("dataSet has {0 tables",
            dataSet.Tables.Count);
    


Windows 98, Windows 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 .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0
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