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    <p>The parameters in your routes <code>{roleId}</code>, <code>{applicationName}</code> and <code>{roleName}</code> don't match the parameter names in your action methods. I don't know if that matters, but it makes it tougher to figure out what your intention is.</p> <p>Do your itemId's conform to a pattern that could be matched via regex? If so, then you can add a restraint to your route so that only url's that match the pattern are identified as containing an itemId.</p> <p>If your itemId only contained digits, then this would work:</p> <pre><code>routes.MapRoute("AssignRemove", "Items/{action}/{itemId}", new { controller = "Items" }, new { itemId = "\d+" } ); </code></pre> <p>Edit: You could also add a constraint to the <code>AssignRemovePretty</code> route so that both <code>{parentName}</code> and <code>{itemName}</code> are required.</p> <p>Edit 2: Also, since your first action is just redirecting to your 2nd action, you could remove some ambiguity by renaming the first one.</p> <pre><code>// Method #1 public ActionResult AssignRemovePretty(string parentName, string itemName) { // Logic to retrieve item's ID here... string itemId = ...; return RedirectToAction("Assign", itemId); } // Method #2 public ActionResult Assign(string itemId, string searchTerm, int? page) { ... } </code></pre> <p>Then specify the Action names in your routes to force the proper method to be called:</p> <pre><code>routes.MapRoute("AssignRemove", "Items/Assign/{itemId}", new { controller = "Items", action = "Assign" }, new { itemId = "\d+" } ); routes.MapRoute("AssignRemovePretty", "Items/Assign/{parentName}/{itemName}", new { controller = "Items", action = "AssignRemovePretty" }, new { parentName = "\w+", itemName = "\w+" } ); </code></pre>
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    1. POASP.NET MVC ambiguous action methods
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    1. COSorry Dennis, the parameters do actually match. I've fixed the question. I will try out the regex restraint and get back to you. Thanks!
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      1. USJonathan Freeland
    2. COYour second edit helped me out, but ultimately it was Levi's suggestion that sealed the deal. Thanks again!
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