收到grpc错误：使用GoogleAds客户端库进行API调用时出现InvalidFlags

问题描述

我想使用Google Ads客户端进行api调用，但是在执行``googleAdsService.Search（request）''时失败，并显示以下消息：

托管调试助手“ PInvokeStackImbalance” 消息=托管调试助手'PInvokeStackImbalance'：'对PInvoke函数'Grpc.Core！Grpc.Core.Internal.NativeMethods + Delegates + grpcsharp_call_start_unary_delegate :: Invoke的调用'使堆栈不平衡。这可能是因为托管的PInvoke签名与非托管的目标签名不匹配。检查PInvoke签名的调用约定和参数是否与目标非托管签名匹配。'

之后，当它进入catch块时，异常对象将保存以下信息：

grpc错误：InvalidFlags system.invalidOperationException：调用错误：InvalidFlags 在Grpc.Core.Internal.CallErrorExtensions.CheckOk（CallError callError）

下面的代码参考

GoogleAdsConfig config = new GoogleAdsConfig()
        {
            DeveloperToken = googleCredentials.developerToken,OAuth2Mode = OAuth2Flow.APPLICATION,LoginCustomerId = bpse.ParentCustomerId,oauth2clientId = googleCredentials.oauth2clientId,oauth2clientSecret = googleCredentials.oauth2clientSecret,OAuth2RefreshToken = googleCredentials.refreshToken
        };

        GoogleAdsClient client = new GoogleAdsClient(config);

        // Create the required service.
        GoogleAdsServiceClient googleAdsService =
            client.GetService(Services.V1.GoogleAdsService);

        // Creates a request that will retrieve all campaign labels with the specified
        SearchGoogleAdsRequest request = new SearchGoogleAdsRequest()
        {
            CustomerId = googleCredentials.clientCustomerId,Query = $@"SELECT
                        campaign.id,campaign.name,campaign.advertising_channel_sub_type,campaign.advertising_channel_type,metrics.clicks,metrics.conversions,metrics.conversions_value,metrics.cost_micros,metrics.impressions,segments.date
                    FROM campaign
                    WHERE segments.date BETWEEN '{startDate.ToString("yyyy-MM-dd",DateTimeFormatInfo.InvariantInfo)}' AND '{endDate.ToString("yyyy-MM-dd",DateTimeFormatInfo.InvariantInfo)}'
                    ORDER BY campaign.id",};

        var campaigns = new List<GoogleAdsRow>();

        foreach (GoogleAdsRow googleAdsRow in googleAdsService.Search(request)) //Failure in this line
            {
                // some operation
            }

.NET Framework：4.5.2 Google.Ads.GoogleAds c＃软件包版本：2.9.0 Grpc.Core版本：1.21.0

解决方法

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