Help URL : URL[1]: http://i.stack.imgur.com/s5ZnK.png' This URL also display a delete button code.
Selenium IDE: Command : Target clickAndWait : id=ctl00_Dialogproxy_deletenews_btnDelete
Log Table value: [info] Executing: |clickAndWait | id=ctl00_Dialogproxy_deletenews_btnDelete
[error] Element id=ctl00_Dialogproxy_deletenews_btnDelete not found
Actually i am not understanding what is the real issue because manually delete (button) functionality proper run but selenium IDE give the above error
What is likely happening is the previous click element launches this "window" with the btnDelete element. So you need to either use a waitFor ( or worse, a pause (don't use pauses).
<tr>
<td>waitForElementPresent</td>
<td>id=ctl00_Dialogproxy_deletenews_btnDelete</td>
<td></td>
</tr>
来源：https://stackoverflow.com/questions/34788850/in-selenium-ide-btndelete-button-not-found