How to change the textfiled value of a selectlist to show another table filed in ASP.NET core

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Hi. I'm new in implementing asp.net core project. By using CRUD methodology I created a MVC project. In one of my Controller class called ApiApplicantController, in its Edit action, there is an expression like below:

ViewData["Apiid"] = new SelectList(_context.Api, "Id", "Id", apiapplicant.Apiid);

which is totally ambiguis for me to understand.
There is a table called Api that has the following fields: Id,name,lastVersion
Also there is another table called apiapplicant that has the following filed: ApiApplicantId, reqNo, Apiid which is fk to ApiID. Now I want the user when wants to edit a record, the selectList shows the names of Api not the Ids. Accordingly, How can I make that changes to the above SelectList?

What I have tried:

C#

ViewData["Apiid"] = new SelectList(_context.Api, "Id", "Id", apiapplicant.Apiid);

Posted 31-Jan-20 3:02am

ElenaRez

Updated 31-Jan-20 3:34am

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Richard Deeming · Answer 1 · 2020-01-31T03:35:00

The SelectList constructor you're calling takes four parameters:

The list of items to display (_context.Api);
The name of the property on an item which provides the value of the list item ("Id");
The name of the property on an item which provides the text of the list item (also "Id");
The value of the selected item (apiapplicant.Apiid);

To change the text that's displayed in the list, you need to change the third parameter:

C#

ViewData["Apiid"] = new SelectList(_context.Api, "Id", "name", apiapplicant.Apiid);

SelectList Constructor (Microsoft.AspNetCore.Mvc.Rendering) | Microsoft Docs[^]