CODEWITHSUNDEEP
asp.net
Rod
Rod

Reputation: 15475

How do I check to see if that element already exists before I add it?

Trying to search web.config using ConfigurationElementCollection.

Here's the article source: https://www.iis.net/configreference/system.webserver/modules/add

Here's a snippet of c# code I'm trying to use:

        using (ServerManager serverManager = new ServerManager())
        {
            Configuration config = serverManager.GetWebConfiguration("Default Web Site/app1");
            ConfigurationSection modulesSection = config.GetSection("system.webServer/modules");
            ConfigurationElementCollection modulesCollection = modulesSection.GetCollection();

            ConfigurationElement addElement = modulesCollection.CreateElement("remove");
            addElement["name"] = @"CartHeader";
            //addElement["type"] = @"Contoso.ShoppingCart.Header";
            //addElement["preCondition"] = @"managedHandler";

            // Check if your CartHeader module exists
            var exists = modulesCollection.Any(m => m.Attributes["name"].Value.Equals("CartHeader"));
            // Handle accordingly
            if (!exists)
            {
                // Create your module here
                modulesCollection.Add(addElement);
                serverManager.CommitChanges();
            }
        }

How do I check to see if that element already exists before I add it?

I changed the CreateElement("remove") and I added a check before trying to add the element but apparently it doesn't take <remove> elements into consideration because it keeps adding it. Am I missing something?

Upvotes: 0

Views: 511

Answers (1)

Rion Williams
Rion Williams

Reputation: 76597

You could likely use a bit of LINQ to query and see if an element with that specific name attribute exists via the Enumerable.Any() method :

// Check if your CartHeader module exists
var exists = modulesCollection.Any(m => m.Attributes["name"].Value.Equals("CartHeader"));
// Handle accordingly
if(!exist)
{
     // Create your module here
}

Upvotes: 1

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