Filter data from azure database using Mobile Service client

I am trying to restrict the data returned by the Mobile App service hosted on Azure portal. Unfortunately I am unable to restrict the data before it's returned (at the createQuery() stage). The filter works only when applied after the data is returned. Here is a sample code. The app is written in Xamarin forms on iOS platform.

 public async Task<IEnumerable<Company>> GetCompanies(string 
 cityId)
 
 await App.MobileService.SyncContext.InitializeAsync(store, 
 handler);
 this.companies = App.MobileService.GetSyncTable<Company>();

 try
 
 await App.MobileService.SyncContext.PushAsync();

 // Filter is unsuccessful here
 await this.companies.PullAsync("all_companies", 
 this.companies.CreateQuery().Where(x => x.City_Id == 
 cityId)).ConfigureAwait(false);
 
 catch (MobileServicePushFailedException ex)
 
 string ErrorString = string.Format("Push failed because 
 of Company sync errors: 0 errors, message: 
 1",ex.PushResult.Errors.Count, ex.Message);
 
 catch (Exception ex)
 
 Debug.WriteLine("Exception Sync companies: " + ex);
 
 // Filter works here. But its too late as it has already
 // pulled all the unnecessary data
 return await companies.Where(x => x.City_Id == 
 cityId).OrderBy(c => c.Id).ToEnumerableAsync();

edited Nov 14 '18 at 17:07

asked Nov 14 '18 at 14:20

MilindRaj

Here is a similar case maybe can help you stackoverflow.com/questions/43766740/…

– Lucas Zhang - MSFT
Nov 15 '18 at 8:24

I had looked into that however, it doesn't work. Hence, I created a new thread.

– MilindRaj
Nov 16 '18 at 15:34

add a comment |

 public async Task<IEnumerable<Company>> GetCompanies(string 
 cityId)
 
 await App.MobileService.SyncContext.InitializeAsync(store, 
 handler);
 this.companies = App.MobileService.GetSyncTable<Company>();

 try
 
 await App.MobileService.SyncContext.PushAsync();

 // Filter is unsuccessful here
 await this.companies.PullAsync("all_companies", 
 this.companies.CreateQuery().Where(x => x.City_Id == 
 cityId)).ConfigureAwait(false);
 
 catch (MobileServicePushFailedException ex)
 
 string ErrorString = string.Format("Push failed because 
 of Company sync errors: 0 errors, message: 
 1",ex.PushResult.Errors.Count, ex.Message);
 
 catch (Exception ex)
 
 Debug.WriteLine("Exception Sync companies: " + ex);
 
 // Filter works here. But its too late as it has already
 // pulled all the unnecessary data
 return await companies.Where(x => x.City_Id == 
 cityId).OrderBy(c => c.Id).ToEnumerableAsync();

edited Nov 14 '18 at 17:07

asked Nov 14 '18 at 14:20

MilindRaj

Here is a similar case maybe can help you stackoverflow.com/questions/43766740/…

– Lucas Zhang - MSFT
Nov 15 '18 at 8:24

I had looked into that however, it doesn't work. Hence, I created a new thread.

– MilindRaj
Nov 16 '18 at 15:34

add a comment |

 public async Task<IEnumerable<Company>> GetCompanies(string 
 cityId)
 
 await App.MobileService.SyncContext.InitializeAsync(store, 
 handler);
 this.companies = App.MobileService.GetSyncTable<Company>();

 try
 
 await App.MobileService.SyncContext.PushAsync();

 // Filter is unsuccessful here
 await this.companies.PullAsync("all_companies", 
 this.companies.CreateQuery().Where(x => x.City_Id == 
 cityId)).ConfigureAwait(false);
 
 catch (MobileServicePushFailedException ex)
 
 string ErrorString = string.Format("Push failed because 
 of Company sync errors: 0 errors, message: 
 1",ex.PushResult.Errors.Count, ex.Message);
 
 catch (Exception ex)
 
 Debug.WriteLine("Exception Sync companies: " + ex);
 
 // Filter works here. But its too late as it has already
 // pulled all the unnecessary data
 return await companies.Where(x => x.City_Id == 
 cityId).OrderBy(c => c.Id).ToEnumerableAsync();

edited Nov 14 '18 at 17:07

asked Nov 14 '18 at 14:20

MilindRaj

 public async Task<IEnumerable<Company>> GetCompanies(string 
 cityId)
 
 await App.MobileService.SyncContext.InitializeAsync(store, 
 handler);
 this.companies = App.MobileService.GetSyncTable<Company>();

 try
 
 await App.MobileService.SyncContext.PushAsync();

 // Filter is unsuccessful here
 await this.companies.PullAsync("all_companies", 
 this.companies.CreateQuery().Where(x => x.City_Id == 
 cityId)).ConfigureAwait(false);
 
 catch (MobileServicePushFailedException ex)
 
 string ErrorString = string.Format("Push failed because 
 of Company sync errors: 0 errors, message: 
 1",ex.PushResult.Errors.Count, ex.Message);
 
 catch (Exception ex)
 
 Debug.WriteLine("Exception Sync companies: " + ex);
 
 // Filter works here. But its too late as it has already
 // pulled all the unnecessary data
 return await companies.Where(x => x.City_Id == 
 cityId).OrderBy(c => c.Id).ToEnumerableAsync();

forms azure xamarin mobile service

edited Nov 14 '18 at 17:07

asked Nov 14 '18 at 14:20

MilindRaj

edited Nov 14 '18 at 17:07

asked Nov 14 '18 at 14:20

MilindRaj

edited Nov 14 '18 at 17:07

asked Nov 14 '18 at 14:20

MilindRaj

asked Nov 14 '18 at 14:20

MilindRaj

asked Nov 14 '18 at 14:20

MilindRaj

Here is a similar case maybe can help you stackoverflow.com/questions/43766740/…

– Lucas Zhang - MSFT
Nov 15 '18 at 8:24

I had looked into that however, it doesn't work. Hence, I created a new thread.

– MilindRaj
Nov 16 '18 at 15:34

add a comment |

Here is a similar case maybe can help you stackoverflow.com/questions/43766740/…

– Lucas Zhang - MSFT
Nov 15 '18 at 8:24

I had looked into that however, it doesn't work. Hence, I created a new thread.

– MilindRaj
Nov 16 '18 at 15:34

Here is a similar case maybe can help you stackoverflow.com/questions/43766740/…

– Lucas Zhang - MSFT
Nov 15 '18 at 8:24

I had looked into that however, it doesn't work. Hence, I created a new thread.

– MilindRaj
Nov 16 '18 at 15:34

add a comment |

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