如何使用dapper从存储过程中返回多个结果

Question

我有两个表“属性”和“类型”。我俩都需要使用Dapper中的存储过程同时返回。

Answer 1

您执行QueryMultiple：

string sql = "Invoice_Select";

using (var connection = My.ConnectionFactory())
{
    connection.Open();

    using (var multi = connection.QueryMultiple(sql, new {InvoiceID = 1}, commandType: CommandType.StoredProcedure))
    {
        var invoice = multi.Read<Invoice>().First();
        var invoiceItems = multi.Read<InvoiceItem>().ToList();
    }
}

参考：

• https://dapper-tutorial.net/querymultiple
• https://dapper-tutorial.net/stored-procedure

Answer 2

您可以这样做。

var results = conn.QueryMultiple(@"
    SELECT Id, FirstName, LastName FROM dbo.Users; 
    SELECT Id, CompanyName FROM dbo.Companies
");
var users = results.Read<User>();            
var companies = results.Read<Company>();