Question

I’m facing an problem, I have google and I didn’t find how to solve.

I have these two Action

    public ActionResult ActionA(DTOA dtoA)
    {
       .....
    }

    [HttpPost]
    public ActionResult ActionB(DTOB dtoB)
    {
        DTOA dto = new DTOA();
        dto.ArraOfStringA = dtoB.ArraOfStringB;
        dto.Id = dtoB.Id;


        return RedirectToAction("ActionA", dto);
    }

the models

public class DTOA
{
    public int Id{get;set;}
    public string[] ArraOfStringA { get; set; }

}

public class DTOB
{
    public int Id{get;set;}
    public string[] ArraOfStringB { get; set; }

}

so the situation is

When I post to ActionB, the array of string of dtoB parameter is populated with 2 itens. “1” and “2”

but when this action Redirect to ActionA, dtoA parameter is populated with 1 itens. “System.String[]”.

If I type in browser “domain/controler/ActionA?ArraOfStringA=1&ArraOfStringA=2”

the dtoA parameter is populated with two itens. “1” and “2” ( the expected behavior)

So, how can I redirect to ActionA passing an complex model with an property of array os string?

Answer 1

You might want to consider using TempData to store the model when transferring between two actions rather than using route parameters if the model is complex.

public ActionResult ActionA()
{
   var dto = TempData["model"] as DTOA;

   ...
}

[HttpPost]
public ActionResult ActionB(DTOB dtoB)
{
    DTOA dto = new DTOA();
    dto.ArraOfStringA = dtoB.ArraOfStringB;
    dto.Id = dtoB.Id;

    TempData["model"] = dto;

    return RedirectToAction("ActionA");
}