/// <summary>
/// 延迟 milliSecond 毫秒后执行 handler，与 javascript 里的 setTimeout 相似
/// </summary>
/// <param name="handler">托管函数</param>
/// <param name="milliSecond">毫秒</param>
public static void SetTimeout(AnonymousHandler handler, int milliSecond)
{
new Timer((a) => {
try {
handler();
} catch { }
}, null, milliSecond, milliSecond);
}
/// <summary>
/// 开启事务（不支持异步）
/// </summary>
/// <param name="handler">事务体 () => {}</param>
/// <param name="timeout">超时</param>
public static void Transaction(AnonymousHandler handler, TimeSpan timeout)
{
try {
Instance.BeginTransaction(timeout);
handler();
Instance.CommitTransaction();
} catch (Exception ex) {
Instance.RollbackTransaction();
throw ex;
}
}
/// <summary>
/// 重试某过程 maxError 次，直到成功或失败
/// </summary>
/// <param name="handler">托管函数</param>
/// <param name="maxError">允许失败的次数</param>
/// <returns>如果执行成功，则返回 null, 否则返回该错误对象</returns>
public static Exception Trys(AnonymousHandler handler, int maxError)
{
if (handler != null)
{
Exception ex = null;
for (int a = 0; a < maxError; a++)
{
try {
handler();
return(null);
} catch (Exception e) {
ex = e;
}
}
return(ex);
}
return(null);
}
/// <summary>
/// 开启事务（不支持异步），10秒未执行完将超时
/// </summary>
/// <param name="handler">事务体 () => {}</param>
public static void Transaction(AnonymousHandler handler)
{
Transaction(handler, TimeSpan.FromSeconds(10));
}
