将HTML标记转换为实体参考时，字符文字中的字符过多 [英] Too many characters in character literal while converting HTML Tag to Entity reference
问题描述
我已经通过C#代码生成了HTML标记.我能够在文本区域中正确呈现.当我用Google搜索它时，我发现了此.要在文本区域中呈现HTML标签，我们需要将'<'，'>'转换为HTML实体引用.但是，当我尝试使用 String.Replace 进行替换时，它会引发错误:字符文字中的字符过多
I have generated an HTML tag through C# code. I am able to render correctly in the text area. When I googled it, I found this. To render the HTML tags in the text area, we need to convert the '<','>' into HTML entity references. But when I am trying to replace using String.Replace, it throws an error: Too many characters in character literal
.
string psHtmlOutput="<html><body><table border='0' cellspacing='3' cellpadding='3'><tr><th> Name </th><th>DomainName</th><th>DomainType</th><th>Defualt</th></tr><tr><td>india.local</td><td>india.local</td><td>Authoritative</td><td>True</td></tr></table></body></html>";
psHtmlOutput.Replace('>','>');
psHtmlOutput.Replace('<','<');
错误:字符文字中的字符过多
Error: Too many characters in character literal
请帮助；我该怎么办?
推荐答案
String.Replace 方法有两个重载:
- 一个对
Strings进行操作的人. - 一个可对
Chars进行操作的对象.
- One that operates on
Strings. - One that operates on
Chars.
在C#中，单引号用于指定 Char 文字.因为使用了单引号，所以使用了方法的第二个重载.但是，您的第二个参数不是有效的字符文字，因为 & gt; 不是单个字符.
In C#, single quotation marks are used to specify Char literals. Because you have used single quotes, the second overload of the method has been used. However, your second argument is not a valid character literal because > is not a single character.
因此，如果您实际上想用字符串替换字符，只需使用带字符串的重载:
So if you actually want to replace the character with a string, just use the overload that takes strings:
psHtmlOutput.Replace(">", ">");
psHtmlOutput.Replace("<", "<");
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