Undefined name in type test expressionDRT-W1652
The analyzer produces this diagnostic when the name following the is
in a
type test expression isn't defined.
Example
The following code produces this diagnostic because the name Srting
isn't
defined:
void f(Object o) {
if (o is Srting) {
// ...
}
}
Common fixes
Replace the name with the name of a type:
void f(Object o) {
if (o is String) {
// ...
}
}