Dapper可以将查询参数作为匿名对象传递,并支持任何 ADO.NET 数据提供程序。但是,对 Sybase 15 ADO.NET 驱动程序运行以下查询时:
using (var connection = new AseConnection("..."))
{
connection.Open();
var results = connection.Query<Foo>(
"dbo.sp_columns", new { table_name = "dbo.sysusers"},
commandType: CommandType.StoredProcedure);
}
...引发以下错误:
Sybase.Data.AseClient.AseException: Procedure sp_columns expects parameter @table_name, which was not supplied.
at Sybase.Data.AseClient.AseCommand.ᜁ(Int32 A_0)
at Sybase.Data.AseClient.AseCommand.ᜄ()
at Sybase.Data.AseClient.AseCommand.ᜀ(CommandBehavior A_0)
at Sybase.Data.AseClient.AseCommand.System.Data.IDbCommand.ExecuteReader()
at Dapper.SqlMapper.<QueryInternal>d__13`1.MoveNext() in SqlMapper.cs: line 579
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList(IEnumerable`1 source)
at Dapper.SqlMapper.Query(IDbConnection cnn, String sql, Object param, IDbTransaction transaction, Boolean buffered, Nullable`1 commandTimeout, Nullable`1 commandType) in SqlMapper.cs: line 536
将其更改为DynamicParameters
带有“@table_name”的 Dapper 集也不起作用。
如何使用 Dapper 将强类型参数传递给 Sybase?