{"record":{"id":"78adcd0c4caf7fd4","repo":"EllanJiang/GameFramework","slug":"data-provider-helper-is-invalid-datatablemanager","errorCode":null,"errorMessage":"Data provider helper is invalid.","messagePattern":"Data provider helper is invalid\\.","errorType":"exception","errorClass":"GameFrameworkException","httpStatus":null,"severity":"error","filePath":"GameFramework/DataTable/DataTableManager.cs","lineNumber":101,"sourceCode":"        public void SetResourceManager(IResourceManager resourceManager)\n        {\n            if (resourceManager == null)\n            {\n                throw new GameFrameworkException(\"Resource manager is invalid.\");\n            }\n\n            m_ResourceManager = resourceManager;\n        }\n\n        /// <summary>\n        /// 设置数据表数据提供者辅助器。\n        /// </summary>\n        /// <param name=\"dataProviderHelper\">数据表数据提供者辅助器。</param>\n        public void SetDataProviderHelper(IDataProviderHelper<DataTableBase> dataProviderHelper)\n        {\n            if (dataProviderHelper == null)\n            {\n                throw new GameFrameworkException(\"Data provider helper is invalid.\");\n            }\n\n            m_DataProviderHelper = dataProviderHelper;\n        }\n\n        /// <summary>\n        /// 设置数据表辅助器。\n        /// </summary>\n        /// <param name=\"dataTableHelper\">数据表辅助器。</param>\n        public void SetDataTableHelper(IDataTableHelper dataTableHelper)\n        {\n            if (dataTableHelper == null)\n            {\n                throw new GameFrameworkException(\"Data table helper is invalid.\");\n            }\n\n            m_DataTableHelper = dataTableHelper;\n        }","sourceCodeStart":83,"sourceCodeEnd":119,"githubUrl":"https://github.com/EllanJiang/GameFramework/blob/d0c010b05167c58e92350449d04864a91ca13fd2/GameFramework/DataTable/DataTableManager.cs#L83-L119","documentation":"Thrown by DataTableManager.SetDataProviderHelper when the supplied IDataProviderHelper<DataTableBase> is null. This helper supplies table data to DataTableBase instances, so the manager rejects a null helper during setup.","triggerScenarios":"Calling SetDataProviderHelper(null), or passing an uninitialized helper field/property.","commonSituations":"Custom data provider helper not registered before use; component initialization order wrong; DI resolving to null.","solutions":["Instantiate and register a valid IDataProviderHelper<DataTableBase> before calling.","Ensure framework initialization order: helper set before any table is loaded.","Verify the helper instance is actually constructed, not just declared."],"exampleFix":"// before\ndataTableManager.SetDataProviderHelper(null);\n// after\nm_DataProviderHelper = new DataTableDataProviderHelper();\ndataTableManager.SetDataProviderHelper(m_DataProviderHelper);","handlingStrategy":"type-guard","validationCode":"if (helper != null) dataTableManager.SetDataProviderHelper(helper);","typeGuard":"bool IsValidProviderHelper(IDataProviderHelper<DataTableBase> h) => h != null;","tryCatchPattern":"try { dataTableManager.SetDataProviderHelper(helper); } catch (GameFrameworkException ex) when (ex.Message.Contains(\"Data provider helper\")) { /* register helper */ }","preventionTips":["Register all framework helpers before loading tables","Verify DI/container resolves the helper to a real instance","Keep helper instantiation near the Set call"],"tags":["csharp","datatable","initialization","null-argument"],"backgroundTag":"null-argument","analyzedSha":"d0c010b05167c58e92350449d04864a91ca13fd2","analyzedAt":"2026-09-15T13:37:15.352Z","contentChangedAt":"2026-09-15T13:37:15.352Z","schemaVersion":2},"datasetVersion":"2026-09-15T23:17:13.987Z"}