共用方式為


括號偏好(IDE0047和IDE0048)

本文說明兩個相關規則,IDE0047IDE0048

財產 價值
規則標識碼 IDE0047
標題 拿掉不必要的括號
類別 風格
子類別 語言規則(括號喜好設定)
適用的語言 C# 和 Visual Basic
引進的版本 Visual Studio 2017
選項 dotnet_style_parentheses_in_arithmetic_binary_operators
dotnet_style_parentheses_in_relational_binary_operators
dotnet_style_parentheses_in_other_binary_operators
dotnet_style_parentheses_in_other_operators
財產 價值
規則標識碼 IDE0048
標題 為了清楚起見,請新增括號
類別 風格
子類別 語言規則(括號喜好設定)
適用的語言 C# 和 Visual Basic
引入版本 Visual Studio 2017
選項 dotnet_style_parentheses_in_arithmetic_binary_operators
dotnet_style_parentheses_in_relational_binary_operators
dotnet_style_parentheses_in_other_binary_operators
dotnet_style_parentheses_in_other_operators

概述

本節中的樣式規則涉及括號喜好設定,包括使用括弧來釐清算術、關係型和其他二進位 運算符的優先順序

選項

此規則具有相關聯的選項,可根據運算子類型指定喜好設定:

如需設定選項的相關資訊,請參閱 選項格式

算術運算符號的括號樣式設定 (dotnet_style_parentheses_in_arithmetic_binary_operators)

財產 價值 描述
選項名稱 dotnet_運算法的括號風格_算術二元運算子
選項值 always_for_clarity 偏好括弧來釐清算術運算符優先順序
never_if_unnecessary 當算術運算符優先順序明顯時,偏好不使用括弧
預設選項值 always_for_clarity

算術二元運算符包括:*/%+-<<>>&^|

// dotnet_style_parentheses_in_arithmetic_binary_operators = always_for_clarity
var v = a + (b * c);

// dotnet_style_parentheses_in_arithmetic_binary_operators = never_if_unnecessary
var v = a + b * c;
' dotnet_style_parentheses_in_arithmetic_binary_operators = always_for_clarity
Dim v = a + (b * c)

' dotnet_style_parentheses_in_arithmetic_binary_operators = never_if_unnecessary
Dim v = a + b * c

dotnet_樣式_關係_二元運算子的括號使用規範

財產 價值 描述
選項名稱 dotnet_style_parentheses_in_relational_binary_operators
選項值 always_for_clarity 偏好括弧來釐清關係運算符優先順序
never_if_unnecessary 當關係運算符優先順序明顯時,偏好不要有括弧
預設選項值 always_for_clarity

關係型二元運算符包括:><<=>=isas==!=

// dotnet_style_parentheses_in_relational_binary_operators = always_for_clarity
var v = (a < b) == (c > d);

// dotnet_style_parentheses_in_relational_binary_operators = never_if_unnecessary
var v = a < b == c > d;
' dotnet_style_parentheses_in_relational_binary_operators = always_for_clarity
Dim v = (a < b) = (c > d)

' dotnet_style_parentheses_in_relational_binary_operators = never_if_unnecessary
Dim v = a < b = c > d

dotnet_style_其他二元運算符的括號

財產 價值 描述
選項名稱 dotnet_其他二元運算子中的括號風格
選項值 always_for_clarity 偏好括弧來釐清其他二進位運算符優先順序
never_if_unnecessary 當其他二元運算符優先順序明顯時,偏好不要有括弧
預設選項值 always_for_clarity

其他二元運算子為:&&||??

// dotnet_style_parentheses_in_other_binary_operators = always_for_clarity
var v = a || (b && c);

// dotnet_style_parentheses_in_other_binary_operators = never_if_unnecessary
var v = a || b && c;
' dotnet_style_parentheses_in_other_binary_operators = always_for_clarity
Dim v = a OrElse (b AndAlso c)

' dotnet_style_parentheses_in_other_binary_operators = never_if_unnecessary
Dim v = a OrElse b AndAlso c

其他運算子中的 dotnet 風格括號

財產 價值 描述
選項名稱 dotnet_style_parentheses_in_other_operators
選項值 always_for_clarity 偏好括弧來釐清其他運算符優先順序
never_if_unnecessary 當其他運算符優先順序明顯時,偏好不要有括弧
預設選項值 never_if_unnecessary

這個選項適用於下列 以外的運算子

*/%+-<<>>&^|><<=>=isas==!=&&||??

// dotnet_style_parentheses_in_other_operators = always_for_clarity
var v = (a.b).Length;

// dotnet_style_parentheses_in_other_operators = never_if_unnecessary
var v = a.b.Length;
' dotnet_style_parentheses_in_other_operators = always_for_clarity
Dim v = (a.b).Length

' dotnet_style_parentheses_in_other_operators = never_if_unnecessary
Dim v = a.b.Length

隱藏警告

如果您想要只隱藏單一違規,請將預處理器指示詞新增至原始程式檔以停用,然後重新啟用規則。

#pragma warning disable IDE0047 // Or IDE0048
// The code that's violating the rule is on this line.
#pragma warning restore IDE0047 // Or IDE0048

若要停用檔案、資料夾或項目的規則,請將其嚴重性設定為 組態檔中的 none

[*.{cs,vb}]
dotnet_diagnostic.IDE0047.severity = none
dotnet_diagnostic.IDE0048.severity = none

若要停用所有程式碼樣式規則,請將類別 Style 的嚴重性設定為 組態檔中的 none

[*.{cs,vb}]
dotnet_analyzer_diagnostic.category-Style.severity = none

如需詳細資訊,請參閱 如何在隱藏程式代碼分析警告。

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