Dapper official translation Tutorial 8: QueryMultiple Dapper method of (turn)

Dapper official translation Tutorial 8: QueryMultiple Dapper method of

February 28, 2019 10:42:22  Day_and_Night_2017  Reads: 120

 

QueryMultiple method described

 

QueryMultiple method is an extension method, it can be called IDbConnection object, you can execute a query, and mapped to the result. Can achieve a lot of queries with a query, and using a strongly typed read the result set.

 

The method may be used parameter QueryMultiple

 

Name	Description
sql	check sentence
param	parameter
transaction	Whether to open the transaction
commandTimeout	Timeout period
commandType	Command Type

 

Examples 

 

// execute multiple queries
string sql = "SELECT * FROM Invoice WHERE InvoiceID = @InvoiceID; SELECT * FROM InvoiceItem WHERE InvoiceID = @InvoiceID;";

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

//Inquire
using (var multi = connection.QueryMultiple(sql, new {InvoiceID = 1}))
{
// Read <Type> mapping result set
var invoice = multi.Read<Invoice>().First();
var invoiceItems = multi.Read<InvoiceItem>().ToList();
}
}