In my case,I add a WebDropDown in the updatepanel which will post back to server automatically when value changed.
At first , i click the control to show the drop down list.And then change the value in the edit box of the WebDropDown,but do not select the option from the drop down list .At the same time ,the control will post back to server to run the method i defined. After that ,the drop down list will alwalys shown on the page.
I am using Infragistics V11.2.I think this is a bug,can someone give me some guidance?
Hello bitsbird,
I was not able to reproduce this behavior with 11.2 and newer builds. I will appreciate if you clarify some points for me:
1) The exact Service release that you are using
2) How do you handle the OnValueChanged event >
3) What method do you run on postback ?
However it will be better if are able to provide me with your code or a working sample that demonstrates this. I will be happy to assist you further on the issue.
Hello,I am still following your case. Have you been able to resolve the issue?If you have any concerns or questions, please feel free to contact me, I will be glad to help you.Thank you for choosing Infragistics components!
Hello Hristo,
Thank you for your reply!
I provide a working sample and demonstration vedio in attachment about this problem.
Best Regards,
bitsbird
Thank you for your sample and demonstration video. I was able to experience this behavior on your sample and on my own sample with your configuration of the WebDropDown.
Please note that you have the EnableDropDownAsChild property set to "false". This means that the dropdown container is detached from the source element and is not its child element. What happens is the update panel performs a partial-page update but since the dropdown container is a separate DOM element it stays rendered. The partial-page update updates only the source element of the WebDropDown control.
It is enough to set EnableDropDownAsChild="true" so that the dropdown container gets updated along with the control during partial-page updates.
Please let me know if you have any further questions regarding this issue.
Dear Hristo,
Thanks!
If I set EnableDropDownAsChild="true", I can't change the selected Item you can see the attachment vedio.
Very Sorry!It's my mistake!
In my project, when I set EnableDropDownAsChild="true",the dropdown list can't display!
Setting the EnableDropDownAsChild property cannot be the reason that you are not able to select an item in the dropdown or the container not to display. As you may see in the sample you have attached you are also not able to change the selected item. This has something to do with other logic you have implemented in the WebComboDemo.dll. Please check if you set the selected item for the dropdown programmatically.
If you need further assistance on the issue, please send me the code you implement to enable me investigate it.
I hope this helps.