HttpClient-向Get请求添加参数

Question

我有一个RestRequest,我试图转换为HttpClient获取请求.有什么方法可以按照下面的方式发送参数吗？

private readonly IRestClient _restClient;
public Type GetInfo(string name)
{
    var request = new RestRequest(url, Method.GET);
    request.AddParameter("name", "ivar");
    var response = _restClient.ExecuteRequest(request);
    return ExecuteRequest<Type>(request);
}

Answer 1

如果我没记错的话,RestSharp的AddParameter方法不会添加请求标头,而是为GET添加Uri参数或为POST请求体参数.

没有类似的方法,HttpClient因此您需要自己格式化Uri以获取GET请求.

这是一个方便的方法,它将采用字符串/对象字典并格式化Uri查询字符串.

public static string AsQueryString(this IEnumerable<KeyValuePair<string, object>> parameters)
{
    if (!parameters.Any())
        return "";

    var builder = new StringBuilder("?");

    var separator = "";
    foreach (var kvp in parameters.Where(kvp => kvp.Value != null))
    {
        builder.AppendFormat("{0}{1}={2}", separator, WebUtility.UrlEncode(kvp.Key), WebUtility.UrlEncode(kvp.Value.ToString()));

        separator = "&";
    }

    return builder.ToString();
}