c# – UInt32的参数数据类型无效. (MS SQL Server)

通常我们应该将整数值传递给我们的存储过程,为此我们通常使用此方法

command.Parameters.AddWithValue("@param1", paramValue);

但是,我发现很奇怪,如果我们需要使用上面的方法将uint数据类型参数传递给存储过程,它会给出一个奇怪的异常.虽然它不是代码命中ExecuteNonQuery方法,但它之后.我不确定为什么会这样.如果有人有什么要分享请…

这是堆栈跟踪：

   at System.Data.SqlClient.MetaType.GetMetaTypeFromValue(Type dataType, Object value, Boolean inferLen, Boolean streamAllowed)
   at System.Data.SqlClient.SqlParameter.GetMetaTypeOnly()
   at System.Data.SqlClient.SqlParameter.Validate(Int32 index, Boolean isCommandProc)
   at System.Data.SqlClient.SqlCommand.SetUpRPCParameters(_SqlRPC rpc, Int32 startCount, Boolean inSchema, SqlParameterCollection parameters)
   at System.Data.SqlClient.SqlCommand.BuildRPC(Boolean inSchema, SqlParameterCollection parameters, _SqlRPC& rpc)
   at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds, Boolean describeParameterEncryptionRequest)
   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()

解决方法:

根据reference提供的,在Sql中不支持UInt32.

Inferring a SqlDbType from UInt32 is not supported.

所以传递参数为好;

command.Parameters.Add("@param1", SqlDbType.Int).Value = Convert.ToInt32(paramValue);