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# ExtendSelect Method (IListBase<T>)

Selects additional items from the multi-selection list. This method is applicable only to lists that allow multiple selection.

This method has multiple overloads.

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## ExtendSelect (T[]) Method

Selects additional items from the multi-selection list. This method is applicable only to lists that allow multiple selection.

C# Syntax

    void ExtendSelect(
       params T[] items
    )

Parameters

items

The items to add to the selection.

## ExtendSelect(Int32[]) Method

Selects additional items from the multi-selection list. This method is applicable only to lists that allow multiple selection.

C# Syntax

    void ExtendSelect(
       params int[] itemIndices
    )

Parameters

itemIndices

The indices of the items to add to the selection.

## ExtendSelect(String[]) Method

Selects additional items from the multi-selection list. This method is applicable only to lists that allow multiple selection.

C# Syntax

    void ExtendSelect(
       params string[] items
    )

Parameters

items

The names of the items to add to the selection.