Adding model with user input and hard coded values - asp.net-mvc

Question

Okay so I am using the MVC framework. I have a view for adding a model. At the moment I am using the default "Create" controller.
I want to be able to create a model with my own variables pre-set. For example the model.UserId I want to set to the users Id. I want some values to be inputed by the user and I want some to be already set. Is there a way I could do something like this
(pseudo code)
model.matchId = 123
model.prediction type = "user input"
add model
here is my current code below
#using (Html.BeginForm()) {
#Html.ValidationSummary(true)
<fieldset>
<legend>Predictions</legend>
<div class="editor-label">
#Html.LabelFor(model => model.MatchId, "Match")
</div>
<div class="editor-field">
#Html.DropDownList("MatchId", String.Empty)
#Html.ValidationMessageFor(model => model.MatchId)
</div>
<div class="editor-label">
#Html.LabelFor(model => model.UserId, "User")
</div>
<div class="editor-field">
#Html.DropDownList("UserId", String.Empty)
#Html.ValidationMessageFor(model => model.UserId)
</div>
<div class="editor-label">
#Html.LabelFor(model => model.Type)
</div>
<div class="editor-field">
#Html.EditorFor(model => model.Type)
#Html.ValidationMessageFor(model => model.Type)
</div>
<div class="editor-label">
#Html.LabelFor(model => model.Prediction)
</div>
<div class="editor-field">
#Html.EditorFor(model => model.Prediction)
#Html.ValidationMessageFor(model => model.Prediction)
</div>
<p>
<input type="submit" value="Create" />
</p>
</fieldset>
}

Answer 1

In the controller, you would set the values on the model before returning it to the View.
public class HomeController : Controller
{
public ActionResult About()
{
var model = new MyModel();
model.SomeId = 123;
model.SomeOtherProperty = "Hello World";
return View(model);
}
}