錯誤信息：System.Data.SqlClient.SqlException（0x80131904）：轉換爲nvarchar值

Question

Error:System.Data.SqlClient.SqlException (0x80131904): Conversion failed when converting the nvarchar value 'ff' to data type int. at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action 1 wrapCloseInAction) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action 1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource 1 completion, Int32 timeout, Task& task, Boolean asyncWrite) at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource 1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite) at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at MyApp.WebForm1.Button1_Click(Object sender, EventArgs e) in C:\myProjectFiles\MyApp\MyApp\Registration.aspx.cs:line 48 ClientConnectionId:a7f5710d-3f9e-4cd9-bf01-49ad3fd8cec4

Answer 1

Conversion failed when converting the nvarchar value 'ff' to data type int. 

你的錯誤說究竟什麼時候轉換失敗，在您的SQL查詢失敗的轉換。很難說您的查詢中的問題出在哪裏而沒有看到查詢。