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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Incorrect overloaded method got precedence while invoking .Net functions/methods from Python","articleBody":"### Environment\r\n\r\n-   Pythonnet version: 2.5.1\r\n-   Python version: 3.8.2\r\n-   Operating System: Windows 10\r\n\r\n### Details\r\nIn PythonNet 2.5.1, I found correct/appropriate overloaded .Net methods are not invoked from Python while executing .Net code statements \r\n\r\nfor example please find the below code throws an error while trying to execute System.Data.DataRowCollection.Add(System.Data.DataRow) method.\r\n\r\nReference: https://docs.microsoft.com/en-us/dotnet/api/system.data.datarowcollection.add?view=netframework-4.8\r\n\r\nCode:\r\n```python\r\n#PYTHON 3.8.x PYTHONNET 2.5.1\r\nimport clr\r\nclr.AddReference(\"System\")\r\nclr.AddReference(\"System.Data\")\r\nimport System\r\nimport System.Data\r\n\r\ndt = System.Data.DataTable()\r\ncol = System.Data.DataColumn()\r\ncol.ColumnName = \"Id\"\r\ncol.DataType = System.Type.GetType(\"System.Int32\")\r\ndt.Columns.Add(col)\r\ndr = dt.NewRow()\r\ndr[\"Id\"] = 10\r\n#Throws error while invoking void System.Data.DataRowCollection.Add(System.Data.DataRow row)\r\ntry:\r\n    dt.Rows.Add(dr)\r\nexcept Exception as e:\r\n    print(e)\r\n\r\n#Working as expected while invoking System.Data.DataRow Add (params object[] values)\r\ndr = dt.Rows.Add(20)\r\nprint(dr[0])\r\n```\r\n[params_overloaded_function_precedence_issue.py.txt](https://github.com/pythonnet/pythonnet/files/5145942/params_overloaded_function_precedence_issue.py.txt)\r\n\r\n\r\n\r\n\r\nUnable to cast object of type 'System.Data.DataRow' to type 'System.IConvertible'.Couldn't store \u003cSystem.Data.DataRow\u003e in Id Column.  Expected type is Int32.\r\n   at System.Data.DataColumn.set_Item(Int32 record, Object value)\r\n   at System.Data.DataTable.NewRecordFromArray(Object[] value)\r\n   at System.Data.DataRowCollection.Add(Object[] values)\r\n\r\n\r\nI could fix this issue in local repo by patching Python.Runtime.MethodBinder.GetPrecedence method, I set lower precedence to overloaded methods with Params array parameter\r\n\r\nPlease have a look and let me know your suggestions\r\n\r\n-Parthasarathy K","author":{"url":"https://github.com/partha-srivi","@type":"Person","name":"partha-srivi"},"datePublished":"2020-08-29T20:18:22.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/1211/pythonnet/issues/1211"}