If A XMl Child Node Has A Attribute Of "String" - Help

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C#

Hi,

I was wonfering how i could say, if a XML Child Node has a attribute within the node of a specific value say for example "Text". I have the following code, i just need help with adapting this to what i need

foreach (XmlNode node in xdoc.ChildNodes)
            {
                if (node.Name == "Bookings")
                {
                    foreach (XmlNode node_of_node in node.ChildNodes)
                    {
                        if (node_of_node.Name == "Booking")
                        {
                            string TimeVariable = node_of_node["Time"].InnerText;

Im wanting to say is if the node of the node "Time" has a value within that child node of a specific string then take that node and output it to a messagebox.

I know how to output things to a messagebox i just need helping with above though with getting the value within a node forexample called "Time" please.