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我已成功從JSON格式的ASP.Net webservice（使用不需要參數的服務方法）返回數據，但一直在努力進行需要參數的web服務調用。使用JSON將數據傳遞到ASP.NET webservice
的Webservice：
<WebMethod()> _
<ScriptMethod(ResponseFormat:=ResponseFormat.Json, UseHttpGet:=True)> _
Public Function TestWebService(ByVal Description As String) As Stock
Dim res As New Stock(Guid.NewGuid, Description)
Return res
End Function
對象：
Public Class Stock
Public Sub New()
End Sub
Public Sub New(ByVal StockID As Guid, ByVal Description As String)
Me._StockID = StockID
Me._Description = Description
End Sub
Public Property StockID As Guid
Public Property Description As String
End Class
的Javascript：
client = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
client.onreadystatechange = DataReturnedFromHttpRequest;
client.open("GET", "/MyWebService.asmx/TestWebService?" + JSON.stringify({"Description":["Test"]}), true);
client.setRequestHeader("Content-Type", "application/json");
client.send(null);
響應：
{"Message":"Invalid web service call, missing value for parameter: \u0027Description\u0027.","StackTrace":" at System.Web.Script.Services.WebServiceMethodData.CallMethod(Object target, IDictionary`2 parameters)\r\n at System.Web.Script.Services.WebServiceMethodData.CallMethodFromRawParams(Object target, IDictionary`2 parameters)\r\n at System.Web.Script.Services.RestHandler.InvokeMethod(HttpContext context, WebServiceMethodData methodData, IDictionary`2 rawParams)\r\n at System.Web.Script.Services.RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)","ExceptionType":"System.InvalidOperationException"}
我明白錯誤，但似乎無法正確解決如何格式化我的請求。