public async Task ClearBreakpoint(string fileName, int lineNumber)
{
fileName = UnresolvePath(fileName);
// clear all matching breakpoints
var breaks = await Inferior.ListBreak();
for (int i = breaks.Length - 1; i >= 0; --i)
{
string fn = breaks[i].Item1;
int line = breaks[i].Item2;
if (fileName == fn && lineNumber == line)
{
await Inferior.DelBreak(i);
}
}
}