我有一个类似于此的WebMethod,用于填充jqGrid
[System.Web.Script.Services.ScriptService]
public class MyWebService: System.Web.Services.WebService
{
[WebMethod]
[Authorize(Roles = "Admin")]
public object GetPeople(bool _search, double nd, int rows, int page, string sidx, string sord)
{
var tbl = new DynamicModel("ConnStr", tableName: "Person", primaryKeyField: "ID");
var results = tbl.Paged(orderBy: sidx + " " + sord, currentPage: page, pageSize: rows);
return results;
}
}
“results”是一个System.Dynamic.ExpandoObject,其属性为Items,TotalPages,TotalRecords
我从webservice上回来的json看起来像这样
{
"d": [{
"Key": "TotalRecords",
"Value": 1
}, {
"Key": "TotalPages",
"Value": 1
}, {
"Key": "Items",
"Value": [
[{
"Key": "Row",
"Value": 1
}, {
"Key": "ID",
"Value": 1
}, {
"Key": "Name",
"Value": "Test Template"
}]
]
}]
}
} // Don't know why firebug put this extra bracket
理想情况下,我更喜欢它没有所有的Key和Value业务,因为它不必要地膨胀了json并且与jqGrid不能很好地匹配。
有没有办法改变ASP.NET处理ExpandoObject序列化的方式?
答案 0 :(得分:4)
听起来你已经想到了这一点,但是something I threw together a while back就是这样做了:
public class ExpandoObjectConverter : JavaScriptConverter {
public override IEnumerable<Type> SupportedTypes {
get { return new ReadOnlyCollection<Type>(new List<Type>(new Type[] { typeof(ExpandoObject) })); }
}
public override IDictionary<string, object> Serialize(object obj, JavaScriptSerializer serializer) {
ExpandoObject expando = (ExpandoObject)obj;
if (expando != null) {
// Create the representation.
Dictionary<string, object> result = new Dictionary<string, object>();
foreach (KeyValuePair<string, object> item in expando) {
if (item.Value.GetType() == typeof(DateTime))
result.Add(item.Key, ((DateTime)item.Value).ToShortDateString());
else
result.Add(item.Key, item.Value.ToString());
}
return result;
}
return new Dictionary<string, object>();
}
public override object Deserialize(IDictionary<string, object> dictionary, Type type, JavaScriptSerializer serializer) {
return null;
}
}
然后,您只需将其添加到web.config中的<converters>
部分,如您链接到的MSDN文章中所示:
<configuration>
<system.web.extensions>
<scripting>
<webServices>
<jsonSerialization>
<converters>
<add name="ExpandoObjectConverter" type="ExpandoObjectConverter"/>
</converters>
</jsonSerialization>
</webServices>
</scripting>
</system.web.extensions>
</configuration>