{awaitcnn.ExecuteAsync(sql,newAuthor[] { colin, robin }); } 1 2 3 4 5 6 7 2) 更新数据 stringsql ="UPDATE author SET Address=@address WHERE Id=@id";using(varcnn = Cnn) {awaitcnn.ExecuteAsync(sql,new{ id =1, address ="山东"}); } 1 2 3 4 5 3) 删除数据 stringsql ="DE...
ExecuteScalar<T> Returns the first column of the first row as the specified T type parameter ExecuteScalarAsync Returns the first column of the first row as a dynamic type asynchronously ExecuteScalarAsync<T> Returns the first column of the first row as the specified T type parameter asynchronou...
Dapper还使用了Async(异步)方法扩展了IDbConnection接口: ExecuteAsync QueryAsync QueryFirstAsync QueryFirstOrDefaultAsync QuerySingleAsync QuerySingleOrDefaultAsync QueryMultipleAsync 示例: string sql = "INSERT INTO emp(empno,ename,job,hiredate,sal) Values (@empno,@ename,@job,@hiredate,@sal);"; using (...
代码：public class DapperHelper { /// 数据库连接名 private static string _connection = string.Empty;/// 获取连接名 private static string Connection { get { return _connection; } //set { _connection = value; } } /// 返回连接实例 private static IDbConnection dbConnection = null;/// 静态...
} } } private async Task<T> ExecuteAsync<T>(Func<IDbConnection, IDbTransaction, Task<T>> funcAsync, bool beginTransaction = false) { if (_transaction) { return await funcAsync(_transactionConnection, dbTransaction); } if (beginTransaction) { return await ExecuteTransactionAsync(funcAsync); }...
public static int Execute(string sql, object param = null, IDbTransaction transaction = null, int? commandTimeout = null, CommandType? commandType = null) { return Db.Execute(sql, param, transaction, commandTimeout, commandType); } public static Task<int> ExecuteAsync(string sql, object param...
.ForEach(value=>{if(value.ExecuteType !="OpenAsync")all_sql.Add(value.CommandString);if(value.Errored)err_sql.Add(value.CommandString);varlog =$@"【{customTiming.Key}{i++}】{value.CommandString}Execute time :{value.DurationMilliseconds}ms,Start offset :{value.StartMilliseconds}ms,Errored ...
async Task<bool> DeleteAsync(object id) { var sql = $"delete from {typeof(T).Name} where id=@Id"; return await ExecuteAsync(sql, new { Id = id }) > 0; } public bool Delete(object id) { var sql = $"delete from {typeof(T).Name} where id=@Id"; return Execute(sql, new...
.ForEach(value => { if (value.ExecuteType != "OpenAsync") all_sql.Add(value.CommandString); if (value.Errored) err_sql.Add(value.CommandString); var log = $@"【{customTiming.Key}{i++}】{value.CommandString} Execute time :{value.DurationMilliseconds} ms,Start offset :{value.Start...
你可以使用Dapper的Execute方法来执行自定义的SQL语句,而不仅仅是查询。在这个示例中,我们将演示如何执行一个自定义的更新语句。 复制 using Dapper; using System; using System.Data; using System.Data.SqlClient; class Program { static void Main() ...