CODEWITHSUNDEEP
asp.net-mvc
None
None

Reputation: 9247

How to set default value for property in model?

I have RegisterModel and i need to set default value for SelectCountryID and in controller pass that value but when i do like this i get an error :

"Object reference not set to an instance of an object."

public class RegisterModel
{
    public RegisterModel()
    {
        SelectCountryID=1;
    }

    public int SelectCountryID {get;set;} 
}

Controller:

int test = Model.Register.SelectCountryID;

EDIT:

IndexPageModel model = new IndexPageModel();
model.Register = new RegisterModel
            {
                int test = model.Register.SelectCountryId,
                Country = new SelectList(manager.GetCountries(), "Id", "Name"),
                WebTypeOfLicense = new SelectList(CommonDbService.GetAllLicense(), "Id", "Name"),
                Region = new SelectList(manager.GetRegions(model.Register.SelectCountryId), "Id", "Name"),


            };

Upvotes: 0

Views: 5275

Answers (2)

AmmarCSE
AmmarCSE

Reputation: 30607

The problem is in the way you instantiate your model.

model.Register = new RegisterModel{...}

This will execute what is in between the {} before calling the constructor. Also, you cannot define new variables within the braces like

{int test = model.Register.SelectCountryId,...}

In the controller, you need to create a new instance of the model like

RegisterModel model = new RegisterModel();
int test = model.SelectCountryID;

Upvotes: 1

Abbas Galiyakotwala
Abbas Galiyakotwala

Reputation: 3019

you an use system.ComponentModel.DefaultValue attribute

[System.ComponentModel.DefaultValue(0)]
public int SelectCountryID { get; set; }

Upvotes: 3

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