How to convert lowercase to uppercase using c# programming

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Release: 2024-04-04 18:18:12
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如何使用 C# 将小写字符转换为大写

在 C# 中,使用 ToUpper() 方法可以将小写字符转换为大写。该方法返回一个新字符串,其中所有小写字符都已转换为大写字符。

语法:

<code class="csharp">string uppercaseString = lowercaseString.ToUpper();</code>
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示例:

以下代码段说明了如何使用 ToUpper() 方法将小写字符串转换为大写:

<code class="csharp">string lowercase = "hello world";
string uppercase = lowercase.ToUpper();

Console.WriteLine(uppercase); // 输出:HELLO WORLD</code>
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注意:

  • ToUpper() 方法不修改原始字符串。它返回一个包含转换后字符串的新字符串。
  • 该方法将所有小写字符转换为大写字符,包括 ASCII 和 Unicode 字符。
  • 如果字符串中不包含小写字符,则 ToUpper() 方法将返回与原始字符串相同的新字符串。

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