I´ve looked at the monotouch samples and tried:
var range = new NSRange(selectionStart, 1); NumberTextField.SelectedTextRange = IndexedRange.GetRange(range);
But this causes this exception at runtime: Objective-C exception thrown. Name: NSInvalidArgumentException Reason: -[iOS_IndexedRange asRange]: unrecognized selector sent to instance 0x7d9bd690
I also looked at a lot of objective-c versions but i cant figure out how to do them on monotouch.Answer1:
Ruben Macias over at the Xamarin forums helped me.
entryField.BecomeFirstResponder(); var indexToSet = 3; //set cursor after the 3rd letter var positionToSet = entryField.GetPosition(entryField.BeginningOfDocument, indexToSet); entryField.SelectedTextRange = entryField.GetTextRange(positionToSet, positionToSet);