Improve company productivity with a Business Account.Sign Up

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 4169
  • Last Modified:

Why use of Application.SendKeys is not good coding practice in VBA, excel 2010

Hi Team,
I came to know the use of Application.SendKeys is not a good coding practice better to use windows API to achieve this functionality, I want to know why it is not good coding practice and its impact on the system. I appreciate if you could provide in support some link from microsoft/Authentic to justify the same.
Hopefully looking forward to hearing from you.
Regards,
0
satmisha
Asked:
satmisha
  • 3
1 Solution
 
zorvek (Kevin Jones)ConsultantCommented:
SendKeys is the most crude way to communicate with other applications. The technique dates back to the first graphical user interface applications and before better ways of communicating between applications was developed. It's undependable and there are no ways to guarantee that the target objects are in place to receive the generated keystrokes.

The first better method to automate other applications was DDE or Dynamic Data Exchange:

http://en.wikipedia.org/wiki/Dynamic_Data_Exchange

These days it's much more common and preferable to use OLE or Object Linking and Embedding:

http://en.wikipedia.org/wiki/Object_Linking_and_Embedding

Only in extreme cases and when DDE/OLE are unavailable do we use SendKeys.

Kevin
0
 
zorvek (Kevin Jones)ConsultantCommented:
Here are some examples of using SendKeys to do things in Excel that can't be done with the Excel object model:

http://blog.contextures.com/archives/2013/01/29/problems-with-sendkeys-in-excel/

Kevin
0
 
satmishaAuthor Commented:
Thanks Sir for your prompt reply.

But still seems my question is undone, may be I haven't mentioned it clearly, let me rephrase these:

1. Why Application.SendKeys is considered as bad practice and its impact on system.
2. Is there a better way to use replace this.
3. I appreciate if you could provide any supporting document for this.

Hopefully looking forward to hearing from you.
0
 
zorvek (Kevin Jones)ConsultantCommented:
> Why Application.SendKeys is considered as bad practice and its impact on system.

As I stated above, SendKeys is the most crude way to communicate with other applications. The technique dates back to the first graphical user interface applications and before better ways of communicating between applications was developed. It's undependable and there are no ways to guarantee that the target objects are in place to receive the generated keystrokes.

As far as impact on the system, there is virtually no impact on the system in terms of resource utilization. Not more than any other technique anyway.

> Is there a better way to use replace this.

As I stated above, there are two more acceptable and robust methods: DDE and OLE. See my first post above for details and links to extensive descriptions of these technologies.

Kevin
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

  • 3
Tackle projects and never again get stuck behind a technical roadblock.
Join Now