Incorrect value while debugging in Visual Studio 2015

user6416335

Assume we have sample code (VS2015, WinForms, .Net 4.6.1):

List<int> items = new List<int>();
private async Task test(int id)
{
    id = 1;
    int id_real = id;

    int index = items.FindIndex(x => x == id);
}

private async void button1_Click(object sender, EventArgs e)
{
    await test(0);
}

Now "the feature": enter image description here

How is that possible? The interesting part - it is only Visual Studio watcher problem, runtime result remains correct.

For now I know it is only happens in VS2015, and cause of this behaviour - the last string in test method.

Jack Zhai-MSFT

Please enable "Use Managed Compatibility Mode" under TOOLS->Options->Debugging, and then re-debug your app, I think you would get the correct result in debugger windows as the VS2013 or VS2017.

enter image description here

Updated:

I also reported this issue to the connect report even if we could resolve this issue:

https://connect.microsoft.com/VisualStudio/feedbackdetail/view/3135000/incorrect-value-while-debugging-in-visual-studio-2015

この記事はインターネットから収集されたものであり、転載の際にはソースを示してください。

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