命名空间中不存在类型或命名空间名称“”Confidence“”

Question

我使用的是Bing Maps、SOAP、c#和.net。我想实现GeocodeAddress()，但类型或命名空间名称'Confidence'在命名空间中不存在：

private String GeocodeAddress(string address)
        {
            string results = "";
            string key = "insert your Bing Maps key here";
            GeocodeRequest geocodeRequest = new GeocodeRequest();

            // Set the credentials using a valid Bing Maps key
            geocodeRequest.Credentials = new                DevExpress.Map.BingServices.Credentials();
            geocodeRequest.Credentials.ApplicationId = key;

            // Set the full address query
            geocodeRequest.Query = address;

            // Set the options to only return high confidence results 
            ConfidenceFilter[] filters = new ConfidenceFilter[1];
            filters[0] = new ConfidenceFilter();

            filters[0].MinimumConfidence = GeocodeService.Confidence.High;

            // Add the filters to the options
            GeocodeOptions geocodeOptions = new GeocodeOptions();
            geocodeOptions.Filters = filters;
            geocodeRequest.Options = geocodeOptions;

            // Make the geocode request
            GeocodeServiceClient geocodeService = new     GeocodeServiceClient();
            GeocodeResponse geocodeResponse =         geocodeService.Geocode(geocodeRequest);

            if (geocodeResponse.Results.Length > 0)
                results = String.Format("Latitude: {0}\nLongitude: {1}",
                  geocodeResponse.Results[0].Locations[0].Latitude,
                  geocodeResponse.Results[0].Locations[0].Longitude);
            else
                results = "No Results Found";

            return results;
        }

Answer 1

看起来您正在为Bing Maps使用非常旧的SOAP服务。必应地图团队早在6年前就不再推荐使用这些地图了。Bing地图的REST服务速度更快，功能更多，并且会定期更新。有关REST服务的文档可在此处找到：https://msdn.microsoft.com/en-us/library/ff701713.aspx

这里有关于如何在.NET中使用REST服务的文档：https://msdn.microsoft.com/en-us/library/jj819168.aspx

我还建议在这里查看最佳实践文档：https://msdn.microsoft.com/en-us/library/dn894107.aspx