extract substring after the first underscore

Question

I need to remove the underscore and all characters before it in my filename. The syntax of the filename is as follows: ``` ___.xls ``` I want to keep everything BUT the `_` part. I tried using `.Split` as follows: ``` string newfilename = file.Split('_')[1]; ``` but that dropped everything and only kept ``. How could this be achieved?

Accepted Answer

```
string newfilename = file.Substring(file.IndexOf('_') + 1);
```

extract substring after the first underscore

Solution

Problem