GetEnvironmentVariableCore()

static string System.Environment.GetEnvironmentVariableCore ( string variable )

inlinestaticprivate

Definition at line 870 of file Environment.cs.

    {
        Span<char> initialBuffer = stackalloc char[128];
        ValueStringBuilder valueStringBuilder = new ValueStringBuilder(initialBuffer);
        uint environmentVariable;
        while ((environmentVariable = Interop.Kernel32.GetEnvironmentVariable(variable, ref valueStringBuilder.GetPinnableReference(), (uint)valueStringBuilder.Capacity)) > valueStringBuilder.Capacity)
        {
            valueStringBuilder.EnsureCapacity((int)environmentVariable);
        }
        if (environmentVariable == 0 && Marshal.GetLastPInvokeError() == 203)
        {
            valueStringBuilder.Dispose();
            return null;
        }
        valueStringBuilder.Length = (int)environmentVariable;
        return valueStringBuilder.ToString();
    }

References System.Text.ValueStringBuilder.Capacity, System.Text.ValueStringBuilder.Dispose(), System.Text.ValueStringBuilder.EnsureCapacity(), Interop.Kernel32.GetEnvironmentVariable(), System.Runtime.InteropServices.Marshal.GetLastPInvokeError(), System.Text.ValueStringBuilder.GetPinnableReference(), and System.Text.ValueStringBuilder.ToString().

Referenced by System.Environment.GetEnvironmentVariable().