IndexOf Method (String)
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Reports the zero-based index of the first occurrence of the specified string in this instance.
Assembly: mscorlib (in mscorlib.dll)
value is nullNothingnullptrunita null reference (Nothing in Visual Basic).
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see dd66cd4c-b087-415f-9c3e-94e3a1835f74.