📄 met_stream_copyto.asp
字号:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="en-US" xml:lang="en-US" xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>ADO CopyTo Method</title>
<link rel="shortcut icon" href="../favicon.ico" type="image/x-icon" />
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<meta name="Keywords" content="xml,tutorial,html,dhtml,css,xsl,xhtml,javascript,asp,ado,vbscript,dom,sql,colors,soap,php,authoring,programming,training,learning,beginner's guide,primer,lessons,school,howto,reference,examples,samples,source code,tags,demos,tips,links,FAQ,tag list,forms,frames,color table,w3c,cascading style sheets,active server pages,dynamic html,internet,database,development,Web building,Webmaster,html guide" />
<meta name="Description" content="Free HTML XHTML CSS JavaScript DHTML XML DOM XSL XSLT RSS AJAX ASP ADO PHP SQL tutorials, references, examples for web building." />
<meta http-equiv="pragma" content="no-cache" />
<meta http-equiv="cache-control" content="no-cache" />
<link rel="stylesheet" type="text/css" href="../stdtheme.css" />
<script type="text/javascript">
var gaJsHost = (("https:" == document.location.protocol) ? "../../https@ssl./default.htm" : "../../www./default.htm");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
</script>
<script type="text/javascript">
var pageTracker = _gat._getTracker("UA-3855518-1");
pageTracker._initData();
pageTracker._trackPageview();
</script>
</head>
<body>
<a name="top"></a>
<table cellpadding="0" cellspacing="0" width="100%" bgcolor="#808080">
<tr>
<td width="234" valign="top">
<a href="../default.htm"><img src="../images/w3default80.jpg" border="0" alt="W3Schools" /></a>
</td>
<th valign="middle" align="left" class="right">
<script type="text/javascript"><!--
google_ad_client = "pub-3440800076797949";
/*txtimg*/
google_ad_slot = "5330033957";
google_ad_width = 728;
google_ad_height = 90;
//-->
</script>
<script type="text/javascript" src="../../pagead2.googlesyndication.com/pagead/show_ads.js">
</script>
<noscript>
<a href="../default.asp" target="_blank"><img src="../banners/w6.gif" border="0" alt="W3Schools" /></a>
</noscript>
<br /></th>
</tr>
</table>
<table style="margin-left:1px" width="800px" border="0" cellpadding="0" cellspacing="2">
<tr>
<td width="137" class="content" valign="top"><br />
<a class="left" href="../default.asp" target="_top">
<img src="../images/homeicon.gif" border="0" alt="home" /></a>
<a class="left" href="../default.asp" target="_top">
<b>HOME</b></a>
<br /><br />
<b>ADO Tutorial</b><br />
<a class="left" target="_top" href="default.asp" >ADO HOME</a><br />
<a class="left" target="_top" href="ado_intro.asp" >ADO Intro</a><br />
<a class="left" target="_top" href="ado_connect.asp" >ADO Connect</a><br />
<a class="left" target="_top" href="ado_recordset.asp" >ADO Recordset</a><br />
<a class="left" target="_top" href="ado_display.asp" >ADO Display</a><br />
<a class="left" target="_top" href="ado_query.asp" >ADO Query</a><br />
<a class="left" target="_top" href="ado_sort.asp" >ADO Sort</a><br />
<a class="left" target="_top" href="ado_add.asp" >ADO Add</a><br />
<a class="left" target="_top" href="ado_update.asp" >ADO Update</a><br />
<a class="left" target="_top" href="ado_delete.asp" >ADO Delete</a><br />
<a class="left" target="_top" href="ado_demo.asp" >ADO Demo</a><br />
<a class="left" target="_top" href="ado_getstring.asp" >ADO Speed Up</a><br />
<br />
<b>ADO Objects</b><br />
<a class="left" target="_top" href="ado_ref_command.asp" >ADO Command</a><br />
<a class="left" target="_top" href="ado_ref_connection.asp" >ADO Connection</a><br />
<a class="left" target="_top" href="ado_ref_error.asp" >ADO Error</a><br />
<a class="left" target="_top" href="ado_ref_field.asp" >ADO Field</a><br />
<a class="left" target="_top" href="ado_ref_parameter.asp" >ADO Parameter</a><br />
<a class="left" target="_top" href="ado_ref_property.asp" >ADO Property</a><br />
<a class="left" target="_top" href="ado_ref_record.asp" >ADO Record</a><br />
<a class="left" target="_top" href="ado_ref_recordset.asp" >ADO Recordset</a><br />
<a class="left" target="_top" href="ado_ref_stream.asp" >ADO Stream</a><br />
<a class="left" target="_top" href="ado_datatypes.asp" >ADO DataTypes</a><br />
<br />
<a class="left" target="_top" href="ado_summary.asp" >ADO Summary</a><br />
<br />
<b>Examples</b><br />
<a class="left" target="_top" href="ado_examples.asp" >ADO Examples</a><br />
<br />
<b>Exam</b><br />
<a class="left" target="_top" href="../cert/default.asp" >ADO Exam</a><br />
<br />
<b>Selected Reading</b><br />
<a class="left" target="_top" href="../browsers/browsers_stats.asp">Web Statistics</a><br />
<a class="left" target="_top" href="../site/site_glossary.asp">Web Glossary</a><br />
<a class="left" target="_top" href="../hosting/default.asp">Web Hosting</a><br />
<a class="left" target="_top" href="../quality/default.asp">Web Quality</a><br /><br />
<a class="left" target="_top" href="../forum/default.asp">W3Schools Forum</a><br /><br />
<a class="left" target="_top" href="../about/about_helping.asp">Helping W3Schools</a><br /><br />
<script type="text/javascript"><!--
google_ad_client = "pub-3440800076797949";
/*LeftLinkUnit*/
google_ad_slot = "4854527104";
google_ad_width = 120;
google_ad_height = 90;
//-->
</script>
<script type="text/javascript"
src="../../pagead2.googlesyndication.com/pagead/show_ads.js">
</script>
</td>
<td valign="top">
<table style="border: 1px solid gray" width="100%" bgcolor="#FFFFFF" border="0" cellpadding="5" cellspacing="0">
<tr>
<td>
<h1>ADO CopyTo Method</h1>
<hr />
<a href="ado_ref_stream.asp"><img class="navup" src="../images/up.gif" alt="Stream Object Reference" border="0" /> Complete Stream Object Reference</a>
<hr />
<p>The CopyTo method is used to copy a specified number of characters or bytes from an
open Stream object into another open Stream object.</p>
<p>The type of the two Stream objects should be the same. However, text Stream objects can be
copied into binary Stream objects, but not vice-versa, and the CharSet property of the destination Stream object
can be different than the source Stream object. </p>
<h3>Syntax</h3>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
<tr>
<td valign="top">
<pre>objStream.CopyTo dest,numchars</pre>
</td>
</tr>
</table>
<br />
<table class="ex" cellspacing="0" border="1" cellpadding="3" width="100%">
<tr>
<th align="left" valign="top" width="20%">Parameter</th>
<th align="left" valign="top" width="80%">Description</th>
</tr>
<tr>
<td valign="top">dest</td>
<td valign="top"> Required. Where to copy the Stream (contains a reference to an open Stream object)
</td>
</tr>
<tr>
<td valign="top">numchars</td>
<td valign="top"> Optional. An integer that specifies the number of characters
or bytes to be copied from the current position in the source Stream to
the destination Stream. Default is -1 (will copy all data from the current position to
EOS)
<p><b>Note:</b> If the specified number is greater than the available number of bytes/characters until EOS, then only
bytes/characters from the current position to EOS are copied</p>
</td>
</tr>
</table>
<br />
<hr />
<a href="ado_ref_stream.asp"><img class="navup" src="../images/up.gif" alt="Stream Object Reference" border="0" /> Complete Stream Object Reference</a>
<br />
<hr />
<!-- **** SPOTLIGHTS 1 **** -->
<iframe src="../banners/aspallframe.asp" height="110" width="485"
marginwidth="0" marginheight="0" frameborder="0" scrolling="no">
Your browser does not support inline frames or is currently configured not to display inline frames.
</iframe>
<hr />
<!-- **** SPOTLIGHTS 2 **** -->
<!-- **** SPOTLIGHTS 3 **** -->
<table cellpadding="0" cellspacing="0"><tr><td width="72"></td><td>
<script type="text/javascript"><!--
google_ad_client = "pub-3440800076797949";
/*txt*/
google_ad_slot = "1699448869";
google_ad_width = 336;
google_ad_height = 280;
//-->
</script>
<script type="text/javascript"
src="../../pagead2.googlesyndication.com/pagead/show_ads.js">
</script>
</td></tr></table>
<hr />
<center>
<iframe style="background-color:#ffffff" src="../banners/aspallbannerframe.asp" height="60" width="468" marginwidth="0" marginheight="0" frameborder="0" scrolling="no">
Your browser does not support inline frames or is currently configured not to display inline frames.
</iframe>
</center>
<hr />
<table>
<tr>
<td><img src="../images/diploma.jpg" alt="diploma" /></td>
<td> </td>
<td valign="top">
<h2>Get Your Diploma!</h2>
<p>W3Schools' Online Certification Program is the perfect solution for busy
professionals who need to balance work, family, and career building.</p>
<p>The <a href="../cert/default.asp">HTML Certificate</a> is for developers who want to document their knowledge of HTML, XHTML, and CSS.</p>
<p>The <a href="../cert/default.asp">ASP Certificate</a> is for developers who want to document their knowledge of ASP, SQL, and ADO.</p>
</td>
</tr>
</table>
<br />
<hr />
<!-- **** END SPOTLIGHTS **** -->
</td></tr>
<tr><td>
<p>Jump to: <a href="#top" target="_top"><b>Top of Page</b></a>
or <a href="../default.asp" target="_top"><b>HOME</b></a> or
<a href='met_stream_copyto.asp@output=print' target="_blank">
<img src="../images/print.gif" alt="Printer Friendly" border="0" />
<b>Printer friendly page</b></a></p>
<p>W3Schools provides material for training only. We do not warrant the correctness of its contents.
The risk from using it lies entirely with the user.
While using this site, you agree to have read and accepted our
<a href="../about/about_copyright.asp">terms of use</a> and
<a href="../about/about_privacy.asp">privacy policy</a>.
</p>
<p><a href="../about/about_copyright.asp">Copyright 1999-2008</a> by Refsnes Data. All Rights Reserved.</p>
<table border="0" width="100%" cellspacing="0" cellpadding="0"><tr>
<td width="60%" align="left">
<a href="../../validator.w3.org/check@uri=referer" target="_blank">
<img src="../images/vxhtml.gif" alt="Validate" width="88" height="31" border="0" /></a>
<a href="../../jigsaw.w3.org/css-validator/check@uri=referer" target="_blank">
<img src="../images/vcss.gif" alt="Validate" width="88" height="31" border="0" /></a>
<a href="../../www.w3.org/WAI/WCAG1A-Conformance" title="Explanation of Level A Conformance" target="_blank">
<img src="../images/wai.gif" alt="W3C-WAI level A conformance icon" width="88" height="31" border="0" /></a>
</td>
<td>
<a href="../xhtml/xhtml_howto.asp" target="_top">W3Schools was converted to XHTML in December 1999</a>
</td></tr>
</table>
</td></tr>
</table>
</td>
<td width="145" align="center" valign="top">
<iframe style="background-color:#f1f1f1" src="../banners/rightcolumn.asp@secid=ado" height="1850" width="147"
marginwidth="0" marginheight="0" frameborder="0" scrolling="no">
</iframe>
</td>
</tr></table>
</body>
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -