我正在使用 VSTS 2008 + C# + .Net 2.0。执行以下语句时，String.Format 语句抛出 FormatException，有什么想法是错误的吗？
这是获取我正在使用的 template.html 的位置。我想在 template.html 中格式化这部分 m={0} 。
string template = String.Empty;
using (StreamReader textFile = new StreamReader("template.html"))
{
template = textFile.ReadToEnd();
String.Format(template, "video.wmv");
}
http://www.mediafire.com/download.php?u4myvhbmmzg http://www.mediafire.com/download.php?u4myvhbmmzg
EDIT 1:
这是我的 template.html 的内容，
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<!-- saved from url=(0014)about:internet -->
<head>
<title>Silverlight Project Test Page </title>
<style type="text/css">
html, body {
height: 100%;
overflow: auto;
}
body {
padding: 0;
margin: 0;
}
#silverlightControlHost {
height: 100%;
}
</style>
<script type="text/javascript">
function onSilverlightError(sender, args) {
var appSource = "";
if (sender != null && sender != 0) {
appSource = sender.getHost().Source;
}
var errorType = args.ErrorType;
var iErrorCode = args.ErrorCode;
var errMsg = "Unhandled Error in Silverlight 2 Application " + appSource + "\n" ;
errMsg += "Code: "+ iErrorCode + " \n";
errMsg += "Category: " + errorType + " \n";
errMsg += "Message: " + args.ErrorMessage + " \n";
if (errorType == "ParserError")
{
errMsg += "File: " + args.xamlFile + " \n";
errMsg += "Line: " + args.lineNumber + " \n";
errMsg += "Position: " + args.charPosition + " \n";
}
else if (errorType == "RuntimeError")
{
if (args.lineNumber != 0)
{
errMsg += "Line: " + args.lineNumber + " \n";
errMsg += "Position: " + args.charPosition + " \n";
}
errMsg += "MethodName: " + args.methodName + " \n";
}
throw new Error(errMsg);
}
</script>
</head>
<body>
<!-- Runtime errors from Silverlight will be displayed here.
This will contain debugging information and should be removed or hidden when debugging is completed -->
<div id='errorLocation' style="font-size: small;color: Gray;"></div>
<div id="silverlightControlHost">
<object data="data:application/x-silverlight," type="application/x-silverlight-2" width="500" height="240">
<param name="source" value="ClientBin/VideoPlayer.xap"/>
<param name="onerror" value="onSilverlightError" />
<param name="background" value="white" />
<param name="initParams" value="cc=true,markers=true,m={0}" />
<a href="http://go.microsoft.com/fwlink/?LinkID=115261" style="text-decoration: none;">
<img src="http://go.microsoft.com/fwlink/?LinkId=108181" alt="Get Microsoft Silverlight" style="border-style: none"/>
</a>
</object>
<iframe style='visibility:hidden;height:0;width:0;border:0px'></iframe>
</div>
</body>
</html>
提前致谢，
乔治
据猜测，html 包含 javascript 或其他大括号来源 ({ and }）这都需要加倍（到{{ and }}）可与string.Format。我希望可能有一个不同的（更明显的）标记，即%%FILENAME%%。然后使用正则表达式或string.Replace.
如果你有一个标签，string.Replace很好；如果你有很多，有正则表达式的技巧和MatchEvaluator这可能会有所帮助 -like so https://stackoverflow.com/questions/1102300#1102324但具有不同的正则表达式模式。
添加示例 html 后更新：我肯定会使用不同的令牌；在最基本的层面上：
<param name="initParams" value="cc=true,markers=true,m=%%FILENAME%%" />
and
template = template.Replace("%%FILENAME%%", "video.wmv");
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