CRR0009 - Subsequent if-statements have identical conditions

Feb 28, 2025

This analyzer detects a conditional statement followed by another conditional statement with a similar condition. See the example below.

C#
VB.NET

csharp

if (condition) // CRR0009
    DoSomething();

if (condition)
    DoSomethingElse();

If condition Then ' CRR0009
    DoSomething()
End If

If condition Then
    DoSomethingElse()
End If

Subsequent conditional statements with identical conditions can always be combined into a single conditional statement. Use the Combine/Split Conditional(s) refactoring to combine them automatically.

C#
VB.NET

csharp

if (condition){
    DoSomething();
    DoSomethingElse();
}

If condition Then
    DoSomething()
    DoSomethingElse()
End If