c# - How do I have to pass a MemberInitExpression object -


When I run this code, I get an exception to the update method 

  Public Zero UpdateTeststep (teststep phase) {_context.Teststeps.Where (t = & gt; t.TeststepId == step.txtstepid). Update (t = & gt; phase); _context.SaveChanges (); } {"Update expression should be of member type. InitExpression. \ R \ nParametername: updateExpression"}   
 What's wrong with my updates?  
 The source code of the update method:  
  
 line 454:  
  var member as InitExpression = updateExpression.Body MemberInitExpression; If (memberInitExpression == faucet) throwing new logic exception ("Update expression member type should be InitExpression.", "UpdateExpression");   
 Why do I have to tap the value? Do I pass my test incorrectly?  
  
 
 
 Let's say that there is a unit  person  a DBCCText derived class  TestDbContext  with related set  person   
  public class person {[Key] Public Ent ID {Received; Set; } Public string name {get; Set; }}   
 Then a batch update can be written using EntityFrameworkExtended:  
  [TestMethod] Public Zero UpdatePersonName () {(var context = new TestDbContext ()) {// Insert 'Initial' person's name should be referenced by changing. PERSons.Add (new person {name = "andyp"}); Context.SaveChanges (); Assure. First (1, reference number.); Assurance.Are aqual ("Endeavor", context.selections (P => P. names). Single ()); // Update the reference of the names of the persons Pressen Where (P => PIID == 1). Update (p = & gt; new person {name = "pascal"}); // say that the update has been successful. Assert.AreEqual (1, context.Persons.Count ()); Assurance.Are aqual ("Pascal", Reference. Selection (P => P. Name). Single ()); }}   
 Note that I am updating only one unit ( Id == 1 ), but  where condition  is a Selecting more than the unit is definitely valid. Update expression allows more than one asset to be converted at a time.

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