我有以下匿名类型:
new {data1 = "test1", data2 = "sam", data3 = "bob"}
我需要一个方法,能够将这个内容输入进去,并输出一组键值对到数组或字典中。
我的目标是在HttpRequest中使用它作为post数据,因此最终会将其连接成以下字符串:
"data1=test1&data2=sam&data3=bob"
我有以下匿名类型:
new {data1 = "test1", data2 = "sam", data3 = "bob"}
我需要一个方法,能够将这个内容输入进去,并输出一组键值对到数组或字典中。
我的目标是在HttpRequest中使用它作为post数据,因此最终会将其连接成以下字符串:
"data1=test1&data2=sam&data3=bob"
只需要稍微思考一下就可以完成。
var a = new { data1 = "test1", data2 = "sam", data3 = "bob" };
var type = a.GetType();
var props = type.GetProperties();
var pairs = props.Select(x => x.Name + "=" + x.GetValue(a, null)).ToArray();
var result = string.Join("&", pairs);
RouteValueDictionary
来实现。它实现了IDictionary<string, object>
,并具有接受object
并将属性转换为键值对的构造函数。HtmlHelper
扩展方法中将匿名对象转换为字典以用作HTML属性)。 - GWB这是在RouteValueDictionary中的实现方式:
private void AddValues(object values)
{
if (values != null)
{
foreach (PropertyDescriptor descriptor in TypeDescriptor.GetProperties(values))
{
object obj2 = descriptor.GetValue(values);
this.Add(descriptor.Name, obj2);
}
}
}
完整源代码在这里: http://pastebin.com/c1gQpBMG
有一种内置的方法可以将匿名对象转换为字典:
HtmlHelper.AnonymousObjectToHtmlAttributes(yourObj)
RouteValueDictionary
。请注意它是静态的。using Newtonsoft.Json;
var data = new {data1 = "test1", data2 = "sam", data3 = "bob"};
var encodedData = new FormUrlEncodedContent(JsonConvert.DeserializeObject<Dictionary<string, string>>(JsonConvert.SerializeObject(data))
虽然现在已经晚了,但我想为了更加稳健的解决方案而补充一些内容。 我在这里看到的一些方法存在一些问题(比如它们可能无法正确地处理 DateTime)。因此,我建议首先将其转换为 JSON(Newtonsoft Json.Net):
var data = new {data1 = "test1", data2 = "sam", data3 = "bob"};
var result = string.Join("&",
JsonConvert.DeserializeObject<Dictionary<string, string>>(
JsonConvert.SerializeObject(data))
.Select(x => $"{x.Key}={x.Value}")
);
@kbrimington的解决方案是一个不错的扩展方法 - 在我的情况下返回一个HtmlString
public static System.Web.HtmlString ToHTMLAttributeString(this Object attributes)
{
var props = attributes.GetType().GetProperties();
var pairs = props.Select(x => string.Format(@"{0}=""{1}""",x.Name,x.GetValue(attributes, null))).ToArray();
return new HtmlString(string.Join(" ", pairs));
}
我正在使用它将任意属性放入Razor MVC视图中。我最初使用RouteValueDictionary和循环结果的代码,但这种方法更加简洁。
HtmlHelper.AnonymousObjectToHtmlAttributes
。 - Andrew
public class ObjectDictionary : Dictionary<string, object>
{
/// <summary>
/// Construct.
/// </summary>
/// <param name="a_source">Source object.</param>
public ObjectDictionary(object a_source)
: base(ParseObject(a_source))
{
}
/// <summary>
/// Create a dictionary from the given object (<paramref name="a_source"/>).
/// </summary>
/// <param name="a_source">Source object.</param>
/// <returns>Created dictionary.</returns>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="a_source"/> is null.</exception>
private static IDictionary<String, Object> ParseObject(object a_source)
{
#region Argument Validation
if (a_source == null)
throw new ArgumentNullException("a_source");
#endregion
var type = a_source.GetType();
var props = type.GetProperties();
return props.ToDictionary(x => x.Name, x => x.GetValue(a_source, null));
}
}
RouteValueDictionary
,我编写了这个递归函数来支持嵌套匿名类型,通过添加其父级键的前缀来处理这些嵌套参数。public static string EncodeHtmlRequestBody(object data, string parent = null) {
var keyValuePairs = new List<string>();
var dict = new RouteValueDictionary(data);
foreach (var pair in dict) {
string key = parent == null ? pair.Key : parent + "." + pair.Key;
var type = pair.Value.GetType();
if (type.IsPrimitive || type == typeof(decimal) || type == typeof(string)) {
keyValuePairs.Add(key + "=" + Uri.EscapeDataString((string)pair.Value).Replace("%20", "+"));
} else {
keyValuePairs.Add(EncodeHtmlRequestBody(pair.Value, key));
}
}
return String.Join("&", keyValuePairs);
}
使用示例:
var data = new {
apiOperation = "AUTHORIZE",
order = new {
id = "order123",
amount = "101.00",
currency = "AUD"
},
transaction = new {
id = "transaction123"
},
sourceOfFunds = new {
type = "CARD",
provided = new {
card = new {
expiry = new {
month = "1",
year = "20"
},
nameOnCard = "John Smith",
number = "4444333322221111",
securityCode = "123"
}
}
}
};
string encodedData = EncodeHtmlRequestBody(data);
encodedData
变成了:
"apiOperation=AUTHORIZE&order.id=order123&order.amount=101.00&order.currency=AUD&transaction.id=transaction123&sourceOfFunds.type=CARD&sourceOfFunds.provided.card.expiry.month=1&sourceOfFunds.provided.card.expiry.year=20&sourceOfFunds.provided.card.nameOnCard=John+Smith&sourceOfFunds.provided.card.number=4444333322221111&sourceOfFunds.provided.card.securityCode=123"
var dict = a.GetType().GetProperties().ToDictionary(x => x.Name, x => x.GetValue(a, null));
- nikib3roToArray()
,这很好。无论如何,当前的响应在SO上适合得很好,没有换行,所以我会保持原样。 - kbrimington