c# - Substring with repeating character -

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how substring sample combobox items

e11-143 - america           -->    america  jc - political theory       -->    political theory

i tried this:

string test = combobox1.text.substring(combobox1.text.indexof('-') + 1).trim();

but result

e11-143 - america           -->    143 - america  jc - political theory       -->    political theory

use lastindexof index of last occurrence of character:

string test = combobox1.text.substring(combobox1.text.lastindexof('-') + 1).trim();

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