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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>Hyperlinked ECMA C# Language Specification</title><meta name="author" content="Jon Jagger" /><link rel="stylesheet" href="ecma334.css"></link></head><body><div align="right"><em><a href="http://www.jaggersoft.com">Jon Jagger</a></em></div><div align="right"><a href="mailto:jon@jaggersoft.com">jon@jaggersoft.com</a></div><form method="get" action="http://search.atomz.com/search/"><input size="30" name="sp-q"></input><input type="submit" value="Search C# Spec"></input><input type="hidden" name="sp-a" value="sp10024177"></input><input type="hidden" name="sp-f" value="ISO-8859-1"></input></form><a href="toc.htm">Table of Contents</a> <a href="1.htm">1</a> <a href="2.htm">2</a> <a href="3.htm">3</a> <a href="4.htm">4</a> <a href="5.htm">5</a> <a href="6.htm">6</a> <a href="7.htm">7</a> <a href="8.htm">8</a> <a href="9.htm">9</a> <a href="10.htm">10</a> <a href="11.htm">11</a> <a href="12.htm">12</a> <a href="13.htm">13</a> <a href="14.htm">14</a> <a href="15.htm">15</a> <a href="16.htm">16</a> <a href="17.htm">17</a> <a href="18.htm">18</a> <a href="19.htm">19</a> <a href="20.htm">20</a> <a href="21.htm">21</a> <a href="22.htm">22</a> <a href="23.htm">23</a> <a href="24.htm">24</a> <a href="25.htm">25</a> <a href="notes.htm">Notes</a> <a href="HyperlinkedCSharpECMA.zip">Download</a><span class="ruler"></span><span class="heading">ECMA-334 C# Language Specification</span><span class="navigate"><a href="15.8.4.htm"><img src="previous.gif" alt="previous" border="0" /></a><a href="15.9.1.htm"><img src="next.gif" alt="next" border="0" /></a></span><span class="clause-depth"><a href="14.htm"><img src="previous.gif" alt="previous at this level" border="0" /></a><a href="16.htm"><img src="next.gif" alt="next at this level" border="0" /></a> <span class="clause-number-link"><a href="15.htm">15</a></span><span class="clause-title-previous"> Statements</span></span><span class="clause-depth"><a href="15.8.htm"><img src="previous.gif" alt="previous at this level" border="0" /></a><a href="15.10.htm"><img src="next.gif" alt="next at this level" border="0" /></a> <span class="clause-number">15.9</span><span class="clause-title"> Jump statements</span></span><span class="locator">
Paragraph 1</span><span class="paragraph"><span class="sentence"><span class="sentence-number">1</span> <a name="P1S1"></a>Jump statements unconditionally transfer control.</span> <span class="grammar-production"><span class="name"><a name="jump-statement"></a>jump-statement</span> : <span class="rhs"><span class="non-terminal"><a href="15.9.1.htm#break-statement">break-statement</a></span> </span><span class="rhs"><span class="non-terminal"><a href="15.9.2.htm#continue-statement">continue-statement</a></span> </span><span class="rhs"><span class="non-terminal"><a href="15.9.3.htm#goto-statement">goto-statement</a></span> </span><span class="rhs"><span class="non-terminal"><a href="15.9.4.htm#return-statement">return-statement</a></span> </span><span class="rhs"><span class="non-terminal"><a href="15.9.5.htm#throw-statement">throw-statement</a></span> </span></span></span><span class="locator">
Paragraph 2</span><span class="paragraph"><span class="sentence"><span class="sentence-number">1</span> <a name="P2S1"></a>The location to which a jump statement transfers control is called the target of the jump statement.</span> </span><span class="locator">
Paragraph 3</span><span class="paragraph"><span class="sentence"><span class="sentence-number">1</span> <a name="P3S1"></a>When a jump statement occurs within a block, and the target of that jump statement is outside that block, the jump statement is said to exit the block.</span> <span class="sentence"><span class="sentence-number">2</span> <a name="P3S2"></a>While a jump statement may transfer control out of a block, it can never transfer control into a block.</span> </span><span class="locator">
Paragraph 4</span><span class="paragraph"><span class="sentence"><span class="sentence-number">1</span> <a name="P4S1"></a>Execution of jump statements is complicated by the presence of intervening try statements.</span> <span class="sentence"><span class="sentence-number">2</span> <a name="P4S2"></a>In the absence of such try statements, a jump statement unconditionally transfers control from the jump statement to its target.</span> <span class="sentence"><span class="sentence-number">3</span> <a name="P4S3"></a>In the presence of such intervening try statements, execution is more complex.</span> <span class="sentence"><span class="sentence-number">4</span> <a name="P4S4"></a>If the jump statement exits one or more try blocks with associated finally blocks, control is initially transferred to the finally block of the innermost try statement.</span> <span class="sentence"><span class="sentence-number">5</span> <a name="P4S5"></a>When and if control reaches the end point of a finally block, control is transferred to the finally block of the next enclosing try statement.</span> <span class="sentence"><span class="sentence-number">6</span> <a name="P4S6"></a>This process is repeated until the finally blocks of all intervening try statements have been executed.</span> </span><span class="paragraph"><span class="example">[Example: In the example <pre class="code-example">
using System;
class Test
{
static void Main() {
while (true) {
try {
try {
Console.WriteLine("Before break");
break;
}
finally {
Console.WriteLine("Innermost finally block");
}
}
finally {
Console.WriteLine("Outermost finally block");
}
}
Console.WriteLine("After break");
}
}
</pre>the finally blocks associated with two try statements are executed before control is transferred to the target of the jump statement. </span></span><span class="paragraph"><span class="example">The output produced is as follows: <pre class="code-example">
Before break
Innermost finally block
Outermost finally block
After break
</pre>end example]</span> </span><span class="ruler"></span><table><tr><td><table align="left" bgcolor="navy"><tr bgcolor="navy"><td><font face="Arial,sans-serif" size="6" color="yellow"><strong>{ JSL }</strong></font></td></tr></table></td></tr><tr><td><font face="Arial,sans-serif" size="2" color="navy"><strong>Jagger Software Ltd</strong></font></td></tr><tr><td><font face="Arial,sans-serif" size="2" color="navy"><strong>Company # 4070126</strong></font></td></tr><tr><td><font face="Arial,sans-serif" size="2" color="navy"><strong>VAT # 762 5213 42</strong></font></td></tr></table><img src="valid-html401.png" align="left" height="31" width="88" alt="Valid HTML 4.01" /><img src="vcss.gif" align="left" height="31" width="88" alt="Valid CSS" /></body></html>
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