sap rfc调用时判断连接状态(找了1天,郁闷啊)

王朝other·作者佚名  2006-01-09
窄屏简体版  字體: |||超大  

代码中出现了一个常数tloRfcConnected,在vb6.0中可用,可是在vb.net中不可用,到底这个是什么意思哪,如下是sap的解释:

Connection Property: IsConnected [/url]

Purpose

Checks the current status of the Connection object and the R/3 connection.

Returns

type String.

Description

Use this property after the [url=http://dev.csdn.net/mk:@MSITStore:K:SAPSapHelp00000546.chm::/397E0153AC6011D189C60000E829FBBD/content.htm]Logon method has returned FALSE. All valid values for the IsProperty property are given in the RfcConnectionStatus table:RfcConnectionStatus values

Logon method has returned FALSE. All valid values for the IsProperty property are given in the RfcConnectionStatus table:RfcConnectionStatus values

tloRfcNotConnected= 0

The R/3 connection is not established, Logon was not called, or Logoff has been called.

tloRfcConnected = 1

The R/3 connection is established.

TloRfcConnectCancel= 2

The R/3 connection is not established due to the fact that the user pressed the Cancel Button during Logon.

tloRfcConnectParameterMissing = 4

The R/3 connection could not be established, due to the fact that a silent logon was attempted with connection parameters.

TloRfcConnectFailed = 8

The R/3 connection failed. Call LastError to display additional information.

代码示例如下:

If m_cnnRFC.IsConnected <> 1 Then

ConnectState = False

Else

ConnectState = True

End If

 
 
 
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