我有一个过程,它接受一个表值参数,以及其他:
CREATE PROCEDURE [dbo].[Update_Records]
@currentYear INT,
@country INT,
@records Record_Table_Type READONLY
AS
我试图用Dapper.TVP来调用它。
这是我到目前为止的代码:
var recordsParameter = new List<SqlDataRecord>();
// This metadata matches 'Record_Table_Type' in the Database
var recordsMetaData = new[]
{
new SqlMetaData("OriginalValue", SqlDbType.Decimal, 19, 4),
new SqlMetaData("NewValue", SqlDbType.Decimal, 19, 4),
new SqlMetaData("NewPercent", SqlDbType.Decimal, 7, 2),
};
foreach (var r in records)
{
var record = new SqlDataRecord(recordsMetaData);
record.SetDecimal(0, r.OriginalValue);
record.SetDecimal(1, r.NewValue);
record.SetDecimal(2, r.NewPercent);
recordsParameter.Add(record);
}
var spParams = new DynamicParameters(new
{
currentYear = filter.currentYear,
country = filter.country,
});
var recordsParam = new TableValueParameter("@records", "Record_Table_Type", recordsParameter);
using (var connection = ConnectionFactory.GetConnection())
{
connection.Execute("Update_Records", ???, commandType: CommandType.StoredProcedure);
}
我的问题是如何在调用Dapper Execute()
将两组参数传递给过程?
我努力了:
var spParams = new DynamicParameters(new
{
currentYear = filter.currentYear,
country = filter.country,
records = new TableValueParameter("@records", "Record_Table_Type", recordsParameter);
});
connection.Execute("Update_Records", spParams, commandType: CommandType.StoredProcedure);
和
connection.Execute("Update_Records", new Object[] { spParams, recordsParam }, commandType: CommandType.StoredProcedure);
两者都调用该过程,但传递一个空表参数( SELECT COUNT(*) FROM @records
返回0)
我似乎无法找到Dapper.TVP的任何实际文档或来源,所以整个事情非常令人困惑,而.Execute()
的第二个参数只是一个dynamic
所以再次没有告诉我我能做什么无法传递给它。
有任何想法吗?
我在移动设备上并且可能误解了这个问题,但这应该只是:
DataTable records = ...
connection.Execute("Update_Records",
new {
currentYear = filter.currentYear,
country = filter.country,
records
},
commandType: CommandType.StoredProcedure
);
基于Mark Gravell的回答: Dapper是否支持SQL 2008表值参数?
我改变了我的代码,不再使用Dapper.TVP而只是使用DataTable
所以代码现在是:
var recordsTable = new DataTable();
recordsTable.Columns.Add("NewValue", typeof(Decimal));
foreach (var netRevenue in records)
{
var row = recordsTable.NewRow();
row[0] = netRevenue.NewValue;
recordsTable.Rows.Add(row);
}
recordsTable.EndLoadData();
var spParams = new DynamicParameters(new
{
currentYear = filter.currentYear,
country = filter.country,
records = recordsTable.AsTableValuedParameter("Record_Table_Type")
});
using (var connection = ConnectionFactory.GetConnection())
{
connection.Execute("Update_Records", spParams, commandType: CommandType.StoredProcedure);
}
这很有效。