SQL Server CLR函数类型不匹配

Question

I'm passing a T-SQL type of char(1) into a C# CLR function.

At the C# side I have the type char.

I'm getting the error "CLR types for parameter ... do not match."

Any ideas?

Answer 1

AFAIK, char SQL Server data type doesn't have equivalent in the CLR for SQL Server in the System.Data.SqlTypes namespace, and their native CLR equivalents in the Microsoft .NET Framework.

But eg nchar(1) does - SqlChars or SqlString for the CLR data type(SQL Server) and Char , String or Char[] for CLR data type (.NET Framework).

See the MSDN Mapping CLR Parameter Data article for more details.