[Solved] What will happen if you try to access a resource after the using block ends?using (var fs = new System.IO.FileStream("file.txt", System.IO.FileMode.Open)) { // use fs } fs.ReadByte(); | C Sharp (C#)

C Sharp (C#) - Exception Handling

What will happen if you try to access a resource after the using block ends?

using (var fs = new System.IO.FileStream("file.txt", System.IO.FileMode.Open)) {
    // use fs
}
fs.ReadByte();

ARuntime ObjectDisposedException is thrown

BThe file stream reads successfully

CCompilation error due to scope

DThe file stream is reopened automatically

Step-by-Step Solution

Solution:

Step 1: Understand resource disposal after using block
The FileStream is disposed at the end of the using block, closing the file.
Step 2: Accessing disposed resource causes exception
Calling ReadByte on a disposed FileStream throws ObjectDisposedException at runtime.
Final Answer:
Runtime ObjectDisposedException is thrown -> Option A
Quick Check:
Access after using block = runtime exception B [OK]

Quick Trick: Accessing disposed resource throws ObjectDisposedException [OK]

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