30 lines
1.3 KiB
XML
30 lines
1.3 KiB
XML
<?xml version="1.0"?>
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<clause number="17.2.6.4" title="this access">
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<paragraph>A nested type and its containing type do not have a special relationship with regard to <non_terminal where="14.5.7">this-access</non_terminal> (<hyperlink>14.5.7</hyperlink>). Specifically, this within a nested type cannot be used to refer to instance members of the containing type. In cases where a nested type needs access to the instance members of its containing type, access can be provided by providing the this for the instance of the containing type as a constructor argument for the nested type. <example>[Example: The following example <code_example><![CDATA[
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using System;
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class C
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{
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int i = 123;
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public void F() {
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Nested n = new Nested(this);
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n.G();
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}
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public class Nested {
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C this_c;
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public Nested(C c) {
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this_c = c;
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}
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public void G() {
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Console.WriteLine(this_c.i);
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}
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}
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}
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class Test {
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static void Main() {
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C c = new C();
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c.F();
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}
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}
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]]></code_example>shows this technique. An instance of C creates an instance of Nested, and passes its own this to Nested's constructor in order to provide subsequent access to C's instance members. end example]</example> </paragraph>
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</clause>
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