Parse double precision using InvariantCulture #2722
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src/CommunityToolkit.Maui/Converters/MathExpressionConverter/MathExpression.shared.cs
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MartyIX
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Jun 16, 2025
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| bool ParsePrimary() | ||
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| if (ParsePattern(EvaluateNumberPattern())) |
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It might be good to turn on the CA1305 analyzer in the project to avoid similar bugs.
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@MartyIX based on your feedback, I applied the CA1305 analyzer and found multiple conversions in MathExpression.shared.cs that needed updates to satisfy the analyzer. After the changes all unit tests for the math converters still passed.
The CA1305 analyzer also picked up new issues which isn't part of the scope of this PR. Would you like me to create split 3 issues to look? (Camera CA1305, SpeechToText CA1305, Badge CA1305)?
F:\Maui\src\CommunityToolkit.Maui.Camera\CameraInfo.shared.cs(99,4): error CA1305: The behavior of 'StringBuilder.Append(ref StringBuilder.AppendInterpolatedStringHandler)' could vary based on the current user's locale settings. Replace this call in 'CameraInfo.ToString()' with a call to 'StringBuilder.Append(IFormatProvider, ref StringBuilder.AppendInterpolatedStringHandler)'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1305)
F:\Maui\src\CommunityToolkit.Maui.Camera\CameraInfo.shared.cs(99,4): error CA1305: The behavior of 'StringBuilder.Append(ref StringBuilder.AppendInterpolatedStringHandler)' could vary based on the current user's locale settings. Replace this call in 'CameraInfo.ToString()' with a call to 'StringBuilder.Append(IFormatProvider, ref StringBuilder.AppendInterpolatedStringHandler)'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1305)
F:\Maui\src\CommunityToolkit.Maui.Camera\CameraInfo.shared.cs(99,4): error CA1305: The behavior of 'StringBuilder.Append(ref StringBuilder.AppendInterpolatedStringHandler)' could vary based on the current user's locale settings. Replace this call in 'CameraInfo.ToString()' with a call to 'StringBuilder.Append(IFormatProvider, ref StringBuilder.AppendInterpolatedStringHandler)'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1305)
F:\Maui\src\CommunityToolkit.Maui.Camera\CameraInfo.shared.cs(99,4): error CA1305: The behavior of 'StringBuilder.Append(ref StringBuilder.AppendInterpolatedStringHandler)' could vary based on the current user's locale settings. Replace this call in 'CameraInfo.ToString()' with a call to 'StringBuilder.Append(IFormatProvider, ref StringBuilder.AppendInterpolatedStringHandler)'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1305)
F:\Maui\src\CommunityToolkit.Maui.Camera\CameraInfo.shared.cs(99,4): error CA1305: The behavior of 'StringBuilder.Append(ref StringBuilder.AppendInterpolatedStringHandler)' could vary based on the current user's locale settings. Replace this call in 'CameraInfo.ToString()' with a call to 'StringBuilder.Append(IFormatProvider, ref StringBuilder.AppendInterpolatedStringHandler)'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1305)
F:\Maui\src\CommunityToolkit.Maui.Core\Essentials\SpeechToText\OfflineSpeechToTextImplementation.android.cs(188,56): error CA1305: The behavior of 'int.ToString()' could vary based on the current user's locale settings. Replace this call in 'RecognitionSupportCallback.OnError(int)' with a call to 'int.ToString(IFormatProvider)'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1305)
F:\Maui\src\CommunityToolkit.Maui.Core\Essentials\Badge\BadgeImplementation.windows.cs(22,40): error CA1305: The behavior of 'uint.ToString()' could vary based on the current user's locale settings. Replace this call in 'BadgeImplementation.SetCount(uint)' with a call to 'uint.ToString(IFormatProvider)'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1305)
Build failed with 7 error(s) and 81 warning(s) in 3.8s
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You can change the pattern to something like this:
@"^-?\d+[.,]?\d*$"
It should match:
- 123
- -123.45
- -123,45
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Oct 15, 2025
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Description of Change
Parse a double using InvariantCulture to avoid issues when CurrentCulture changes, such as to 'ar-AR'.
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PR Checklist
approved(bug) orChampioned(feature/proposal)mainat time of PRAdditional information
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