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SuppressMessageAttribute(String, String) Constructor


Initializes a new instance of the SuppressMessageAttribute class, specifying the category of the code analysis tool and the identifier for an analysis rule.

 SuppressMessageAttribute(System::String ^ category, System::String ^ checkId);
public SuppressMessageAttribute (string category, string checkId);
new System.Diagnostics.CodeAnalysis.SuppressMessageAttribute : string * string -> System.Diagnostics.CodeAnalysis.SuppressMessageAttribute
Public Sub New (category As String, checkId As String)



The category for the attribute.


The identifier of the analysis tool rule the attribute applies to.


The following code example shows the use of the SuppressMessageAttribute attribute to suppress warnings for the Microsoft.Performance category and the CA1801 and CA1804 check identifiers. This code example is part of a larger example provided for the SuppressMessageAttribute class.

[SuppressMessage("Microsoft.Performance", "CA1801:ReviewUnusedParameters", MessageId = "isChecked")]
[SuppressMessage("Microsoft.Performance", "CA1804:RemoveUnusedLocals", MessageId = "fileIdentifier")]
static void FileNode(string name, bool isChecked)
    string fileIdentifier = name;
    string fileName = name;
    string version = String.Empty;
<SuppressMessage("Microsoft.Performance", "CA1801:ReviewUnusedParameters", MessageId:="isChecked"), _
 SuppressMessage("Microsoft.Performance", "CA1804:RemoveUnusedLocals", MessageId:="fileIdentifier")> _
Shared Sub FileNode(ByVal name As String, ByVal isChecked As Boolean)
    Dim fileIdentifier As String = name
    Dim fileName As String = name
    Dim version As String = String.Empty

End Sub


The category parameter value is specific to the analysis tool and categorizes the rule identified by the checkId parameter. The two parameters concatenated together form a unique identifier for the rule.


The preprocessor symbol "CODE_ANALYSIS" must be defined for this attribute to be effective. The absence of the preprocessor symbol results in the attribute not being applied.

Applies to