EnvDTE Project indexing is not zero based

EnvDteProjectIndexingIsNotZeroBased.cs

// Set up (full example at https://github.com/GregTrevellick/AutoFindReplace)
IServiceContainer serviceContainer = this as IServiceContainer;
DTE dte = serviceContainer.GetService(typeof(SDTE)) as DTE;
var projs = new List<string>();

// Let's assume we have a solution containing three projects

// The following will crash
for (int i = 0; i < dte.Solution.Projects.Count; i++)    // Projects.Count is '3' as we'd expect
{
    var item = dte.Solution.Projects.Item(i);            // "i"
    projs.Add(item.FullName);
}

// The following will work and populate 'projs' with three entries
for (int i = 0; i < dte.Solution.Projects.Count; i++)    // Projects.Count is still '3' as we'd expect
{
    var item = dte.Solution.Projects.Item(i + 1);        // "i + 1"
    projs.Add(item.FullName);
}

// Of course the following will also work fine
for (int i = 1; i < dte.Solution.Projects.Count + 1; i++)  
{
    var item = dte.Solution.Projects.Item(i);
    projs.Add(item.FullName);
}