How to automatically open a combo-box when value select value from another combo-box ?

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Hi every,
I am developing project in WPF in which i have requirements that one combo-box will be automatically open when select-Index-Change in another combo-box.
such a help will be appreciated.

Thank you

What I have tried:

i don't have any idea how to do.

Posted 2-May-19 0:02am

Member 12766460

Updated 2-May-19 0:16am

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Richard MacCutchan 2-May-19 6:08am

What exactly do you mean by "automatically open"? Do you just mean the combo will be populated with some items, or something else?

Member 12766460 2-May-19 6:17am

Thank you for the quick response.
it means when value select from one combobox the other combobox will list down all the values that is related to the value is selected from first combobox.

Richard MacCutchan 2-May-19 6:29am

Add an event handler that gets called when an item is selected. Then call the code to populate the second combo from the event handler.

Christian Graus 2-May-19 6:16am

https://www.codeproject.com/Questions/775654/Automatically-opening-a-drop-down-in-WPF

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Christian Graus · Accepted Answer · 2019-05-02T00:16:00

Solution 1

https://www.codeproject.com/Questions/775654/Automatically-opening-a-drop-down-in-WPF

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Posted 2-May-19 0:16am

Christian Graus