Should I Use Nested `using` Statements in C# File Comparisons?

Discussion on nested using statements in C#

When comparing two files for an exact match, nested using statements are often used, as shown in the code snippet below. However, this approach affects code structure and readability.

The recommended approach is to omit the curly braces after individual using statements and combine them into a single code block. For example, the original code can be rewritten as follows:

<code class="language-csharp">using (StreamReader outFile = new StreamReader(outputFile.OpenRead()))
using (StreamReader expFile = new StreamReader(expectedFile.OpenRead()))
{
    // 比较文件内容的代码...
}</code>

In this modified code, the two using statements share the same opening curly brace, making the structure more concise and clear. This eliminates nesting and improves code readability, especially when dealing with multiple using statements.

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