C#•15mo ago

❔ Array.IndexOf being weird

I'm very confused. Been trying to use Array.IndexOf to find a null terminator in a byte array

int endOfString = Array.IndexOf(Data, 0x0, EntryNameTableOffset + entry.NameTableOffset);

int endOfString = Array.IndexOf(Data, 0x0, EntryNameTableOffset + entry.NameTableOffset);

But it fails to find the byte and returns -1 Doing this however, it finds the byte... O_O Why does Array.IndexOf not work in this situation?

for (int x = EntryNameTableOffset + entry.NameTableOffset; x < Data.Length; x++)
{
    if (Data[x] == 0x0)
    {
        endOfString = x;
        break;
    }
}

for (int x = EntryNameTableOffset + entry.NameTableOffset; x < Data.Length; x++)
{
    if (Data[x] == 0x0)
    {
        endOfString = x;
        break;
    }
}

11 Replies

occluder•15mo ago

.IndexOf() has a generic overload. Do .IndexOf<byte>() and it should work

Matt•15mo ago

you're a lifesaver... weird that it doesn't detect the type. What is the type by default?

occluder•15mo ago

It looks like it doesn't care about that from the parameters, it's looking for an 'object?' in 'Array'

phaseshift•15mo ago

Depends on your variable type whether the generic overload would be picked

Matt•15mo ago

That seems dumb to me. So in some cases we just have to explicitly state the type but in other cases it will figure it out? C# be quirky

occluder•15mo ago

Also relevant. When you put in 0x0 it defaulted to an int

Matt•15mo ago

that makes more sense

occluder•15mo ago

So it couldn't apply IndexOf<byte> to byte[] and int

Matt•15mo ago

gotcha. Thank you for the help 🙂

phaseshift•15mo ago

What type is Data declared as?

Accord•15mo ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ Array.IndexOf being weird