利用aspnetboilerplate提供的工具類IDbContextProvider

private readonly IDbContextProvider<XXXDbContext> _provider; public XXXAppService(IDbContextProvider<XXXDbContext> provider) {_provider = provider; } public async Task Query() {var sql="your sql";var tableList = _provider.GetDbContext().Query<Class>().FromSql(sql).AsNoTracking().ToList(); }

參考資料

Raw SQL Queries
How to execute a sql string in the application layer

比較原始 && 通用的方式

public class SqlHelper {public DataTable QueryForDatable(string sql){SqlConnection conn = new System.Data.SqlClient.SqlConnection();conn.ConnectionString = GetConnectionString(conn);if (conn.State != ConnectionState.Open){conn.Open();}SqlCommand cmd = new SqlCommand();cmd.Connection = conn;cmd.CommandText = sql;SqlDataAdapter adapter = new SqlDataAdapter(cmd);DataTable table = new DataTable();adapter.Fill(table);conn.Close();conn.Dispose();return table;}//簡而言之，拿到數(shù)據(jù)庫連接字符串private static string GetConnectionString(SqlConnection conn){//這里需要拿到appsettings.json所在文件夾路徑var currentDirectoryPath = Directory.GetCurrentDirectory();var configuration = AppConfigurations.Get(currentDirectoryPath);//connectionStringName是數(shù)據(jù)庫連接字符串在appsettings.json中的對應(yīng)名稱return configuration.GetConnectionString(connectionStringName);}/// <summary>/// SQL 語句返回 dataset/// </summary>/// <param name="sql"></param>/// <returns></returns>public DataSet QueryForListDataTable(string sql){SqlConnection conn = new SqlConnection();conn.ConnectionString = GetConnectionString(conn);if (conn.State != ConnectionState.Open){conn.Open();}SqlCommand cmd = new SqlCommand();cmd.Connection = conn;cmd.CommandText = sql;SqlDataAdapter adapter = new SqlDataAdapter(cmd);DataSet dataSet = new DataSet();adapter.Fill(dataSet);conn.Close();conn.Dispose();return dataSet;} }

轉(zhuǎn)載于:https://www.cnblogs.com/Lulus/p/10583585.html

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