{"record":{"id":"a06572efd23757e6","repo":"dotnet/wpf","slug":"sr-seekorigininvalid","errorCode":null,"errorMessage":"SR.SeekOriginInvalid","messagePattern":"SR\\.SeekOriginInvalid","errorType":"exception","errorClass":"ArgumentOutOfRangeException","httpStatus":null,"severity":"error","filePath":"src/Microsoft.DotNet.Wpf/src/WindowsBase/MS/Internal/IO/Packaging/CompressEmulationStream.cs","lineNumber":87,"sourceCode":"            {\n                case SeekOrigin.Begin:\n                    {\n                        temp = offset;\n                        break;\n                    }\n                case SeekOrigin.Current:\n                    {\n                        checked { temp = _tempStream.Position + offset; }\n                        break;\n                    }\n                case SeekOrigin.End:\n                    {\n                        checked { temp = _tempStream.Length + offset; }\n                        break;\n                    }\n                default:\n                    {\n                        throw new ArgumentOutOfRangeException(nameof(origin), SR.SeekOriginInvalid);\n                    }\n            }\n\n            if (temp < 0)\n            {\n                throw new ArgumentException(SR.SeekNegative);\n            }\n\n            return _tempStream.Seek(offset, origin);\n        }\n\n        /// <summary>\n        /// SetLength\n        /// </summary>\n        public override void SetLength(long newLength)\n        {\n            CheckDisposed();\n","sourceCodeStart":69,"sourceCodeEnd":105,"githubUrl":"https://github.com/dotnet/wpf/blob/81131a70a4c573cd62748a5c36908fc4d662daa9/src/Microsoft.DotNet.Wpf/src/WindowsBase/MS/Internal/IO/Packaging/CompressEmulationStream.cs#L69-L105","documentation":"CompressEmulationStream.Seek validates the SeekOrigin. Only Begin, Current, and End are accepted; any other value (invalid cast, uninitialized enum) reaches the default branch and throws ArgumentOutOfRangeException with SR.SeekOriginInvalid.","triggerScenarios":"Calling Seek(offset, origin) with an out-of-range SeekOrigin value, e.g. (SeekOrigin)42 from an unvalidated caller or computed enum value, via Position or directly.","commonSituations":"Generic stream-wrapper code that passes user- or config-supplied origin values through without validation; deserialized enum values from older data.","solutions":["Pass only SeekOrigin.Begin, SeekOrigin.Current, or SeekOrigin.End.","Validate/normalize the origin enum before calling Seek on wrapped streams.","Fix code that computes origin from an int without range checking."],"exampleFix":"// before\nemulationStream.Seek(offset, (SeekOrigin)rawValue);\n// after\nif (rawValue < 0 || rawValue > (int)SeekOrigin.End)\n    throw new ArgumentOutOfRangeException(nameof(rawValue));\nemulationStream.Seek(offset, (SeekOrigin)rawValue);","handlingStrategy":"validation","validationCode":"bool IsValidSeekOrigin(SeekOrigin origin) =>\n    origin is SeekOrigin.Begin or SeekOrigin.Current or SeekOrigin.End;","typeGuard":"bool IsDefinedSeekOrigin(SeekOrigin o) => o >= SeekOrigin.Begin && o <= SeekOrigin.End;","tryCatchPattern":"try { es.Seek(offset, origin); }\ncatch (ArgumentOutOfRangeException) { reportInvalidOrigin(origin); }","preventionTips":["Only pass literal SeekOrigin.Begin/Current/End values","Range-check any origin value derived from ints or config","Wrap generic stream-forwarding helpers with origin validation"],"tags":["wpf","stream","seek","argument-out-of-range","enum"],"backgroundTag":"invalid-enum-value","analyzedSha":"81131a70a4c573cd62748a5c36908fc4d662daa9","analyzedAt":"2026-09-14T10:12:48.479Z","contentChangedAt":"2026-09-14T10:12:48.479Z","schemaVersion":2},"datasetVersion":"2026-09-21T21:30:21.729Z"}