c# - multiply textbox value by factor from combobox? -

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i have textbox numeric input. , combobox, list of factors 'behind' it.

i want have combobox multiply value visible in textbox factor chosen list, each time change combobox choice. way go here?

sorry, not clear: say, value in tb 3. chose cb item (the 1 says "10") , tb value multiplied 10. next time chose cb item (the 1 says "100"), original value of tb box multiplied 100.

use convert input textbox int:

int = int32.parse(textbox1.text);

maybe paste code in? can better way


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