You can try something like this to set the highlight in PasswordBox:
private void SetSelection(PasswordBox passwordBox, int start, int length) { passwordBox.GetType().GetMethod("Select", BindingFlags.Instance | BindingFlags.NonPublic).Invoke(passwordBox, new object[] { start, length }); }
After that, call it in such a way as to set the cursor position:
// set the cursor position to 2... SetSelection( passwordBox1, 2, 0); // focus the control to update the selection passwordBox1.Focus();
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