Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: martijnhols/actions-cache/restore@v3, martijnhols/actions-cache/save@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Possible null reference argument for parameter 'format' in 'bool CustomMainForm.ParseQFormatString(string format, out int integral, out int fractional)'.

Type 'AngleConverter' is a static holder type but is neither static nor NotInheritable (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1052)

If possible, make the underlying type of ButtonFlags System.Int32 instead of ushort (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1028)

Rename type name ButtonFlags so that it does not end in 'Flags' (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1711)

Do not declare visible instance fields (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1051)

Do not declare visible instance fields (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1051)