QueryAsyncCallback Delegate

User defined callback function for interface QueryAsync(IntPtr, String, QueryAsyncCallback, IntPtr),actually is a delegate in .Net. This function aim to handle the taoRes which points to the caller method's SQL result set.

Namespace: TDengineDriver
Assembly: TDengineDriver (in TDengineDriver.dll) Version: 1.0.6

Syntax

Copy

public delegate void QueryAsyncCallback(
	IntPtr param,
	IntPtr taoRes,
	int code
)

Parameters

param: Type: SystemIntPtr
This parameter will sent by caller method (QueryAsync(IntPtr, String, QueryAsyncCallback, IntPtr))
taoRes: Type: SystemIntPtr
This is the retrieved by caller method's SQL.
code: Type: SystemInt32
0 for indicate operation success and negative for operation fail.

Reference

TDengineDriver Namespace