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  1. C# Driver
  2. CSHARP-4665

ExpressionNotSupportedException for string.IsNullOrWhitespace after upgrade

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    • Type: Icon: New Feature New Feature
    • Resolution: Done
    • Priority: Icon: Unknown Unknown
    • 2.21.0
    • Affects Version/s: None
    • Component/s: None
    • None
    • Not Needed
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      2. Would you like the user to see examples of the syntax and/or executable code and its output?
      3. Which versions of the driver/connector does this apply to?

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      1. What would you like to communicate to the user about this feature? 2. Would you like the user to see examples of the syntax and/or executable code and its output? 3. Which versions of the driver/connector does this apply to?

      Summary

      I am running MongoDb 6.0.6

      When upgrading from Mongodbdriver 2.18 to 2.19.2 several queries I run begin to fail with the ExpressionNotSupportedException.

      How to Reproduce

       
      Query on any string field e.g
       
      _profileDataCollection.Find(model.GetFilter())
      .Project(x => new ProfileReportModel {
      Id = x.Id,
      Bio = !string.IsNullOrWhiteSpace(x.Bio),
      CurrentStatus = !string.IsNullOrWhiteSpace(x.CurrentStatus)
       
      In this example Bio and CurrentStatus are string fields
       
      Downgrading the connection to LinqProvider.V2 fixes the issue:
       
      var clientSettings = MongoClientSettings.FromConnectionString(Configuration.GetConnectionString(nameof(StudentProfile)));
      clientSettings.LinqProvider = LinqProvider.V2;
      var client = new MongoClient(clientSettings);

      It appears to be similar to this issue:
      https://www.mongodb.com/community/forums/t/issue-with-2-18-to-2-19-nuget-upgrade-of-mongodb-c-driver/211894
       

            Assignee:
            robert@mongodb.com Robert Stam
            Reporter:
            john.staveley@myglobalbridge.com John Staveley
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              Created:
              Updated:
              Resolved: