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POPass in an array of PaymentDetailsItemType to PayPalAPI
 

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    <p>I am using the PayPal sandbox in ASP.Net C# 4.0. I added the following web reference:</p> <pre><code> https://www.paypalobjects.com/wsdl/PayPalSvc.wsdl </code></pre> <p>If i have 1 item (gimme 2 t-shirts please) i can pass it to the PayPal object and complete my transactions with no problems whatsoever:</p> <pre><code> var item = new PayPalAPIHelper.PayPalWS.PaymentDetailsItemType { Quantity = 2, //etc...etc }; var paymentDetails = new PayPalAPIHelper.PayPalWS.PaymentDetailsType(); paymentDetails.PaymentDetailsItem = new PaymentDetailsItemType[]{item}; </code></pre> <p>Now my dilemma is when a customer wants different items (1 t-shirt, 1 pair of pants). Now i need multiple PaymentDetailsItemType objects to pass to the paymentDetails object. I tried this:</p> <pre><code> //now i have an array of different items var items = new PayPalAPIHelper.PayPalWS.PaymentDetailsItemType[3]; items[0].Description = "T-shirt"; items[1].Description = "Jeans"; paymentDetails.PaymentDetailsItem = new PaymentDetailsItemType[]{items}; </code></pre> <p>I get this error:</p> <pre><code> Cannot implicitly convert type 'PayPalAPIHelper.PayPalWS.PaymentDetailsItemType[]' to 'PayPalAPIHelper.PayPalWS.PaymentDetailsItemType' </code></pre> <p>I can do this and it compiles:</p> <pre><code> paymentDetails.PaymentDetailsItem = new PaymentDetailsItemType[]{items[0],items[1]}; </code></pre> <p>But when I run it, i get Data type '' mismatch in element 'Quantity' when i call the PayPal service:</p> <pre><code> PayPalAPIHelper.PayPalWS.PaymentDetailsType paymentDetails = new PayPalAPIHelper.PayPalWS.PaymentDetailsType(); paymentDetails.PaymentDetailsItem = new PayPalAPIHelper.PayPalWS.PaymentDetailsItemType[] { items[0],items[1] }; reqDetails.PaymentDetails = new PayPalAPIHelper.PayPalWS.PaymentDetailsType[] { paymentDetails }; PayPalAPIHelper.PayPalWS.SetExpressCheckoutReq req = new PayPalAPIHelper.PayPalWS.SetExpressCheckoutReq() { SetExpressCheckoutRequest = new PayPalAPIHelper.PayPalWS.SetExpressCheckoutRequestType() { Version = Version, SetExpressCheckoutRequestDetails = reqDetails } }; // query PayPal and get token //error occurs here PayPalAPIHelper.PayPalWS.SetExpressCheckoutResponseType resp = BuildPayPalWebservice().SetExpressCheckout(req); //this is where the error occurs </code></pre> <p>How do i pass multiple types to the PayPal API web service so the user can order different items? Thanks in advance</p>
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