Keep input data after posting - razor-2

Question

I have an issue with a long form I'm doing. If a user fills out the form, and validation is invalid, it erases everything in the form, and doesn't keep the data in the valid forms. How would I make it so it doesn't erase the data upon pressing submit?
#{
Layout = "~/Pages/_SiteLayout.cshtml";
var db = Database.Open("mtarplspd");
Validation.RequireField("TypeOfIncident", "Type of incident is required.");
Validation.RequireField("FirstName", "Firstname is required.");
Validation.RequireField("LastName", "Lastname is required.");
Validation.RequireField("Rank", "Rank is required.");
Validation.RequireField("Badge", "Badge is required.");
Validation.RequireField("SuspectFirstName", "Suspect firstname is required.");
Validation.RequireField("SuspectLastName", "Suspect lastname is required.");
Validation.RequireField("SuspectCharges", "Suspect charges is required.");
Validation.RequireField("Description", "Description of the incident is required.");
var typeOfIncident = "";
var firstName = "";
var lastName = "";
var rank = "";
var badge = "";
var suspectFirstName = "";
var suspectLastName = "";
var suspectAddress = "";
var suspectCharges = "";
var suspectVehicleModel = "";
var suspectVehiclePlates = "";
var suspectVehicleColor = "";
var officersInvolved = "";
var description = "";
var departmentsInvolved = "";
var firearmDischarged = "";
var typeOfFirearm = "";
var roundsFired = "";
var reason = "";
var userId = 0;
var dateTime = "";
var ErrorMessage = "";
if (IsPost) {
typeOfIncident = Request.Form["TypeOfIncident"];
firstName = Request.Form["FirstName"];
lastName = Request.Form["LastName"];
rank = Request.Form["Rank"];
badge = Request.Form["Badge"];
suspectFirstName = Request.Form["SuspectFirstName"];
suspectLastName = Request.Form["SuspectLastName"];
suspectAddress = Request.Form["SuspectAddress"];
suspectCharges = Request.Form["SuspectCharges"];
suspectVehicleModel = Request.Form["SuspectVehicleModel"];
suspectVehiclePlates = Request.Form["SuspectVehiclePlates"];
suspectVehicleColor = Request.Form["SuspectVehicleColor"];
officersInvolved = Request.Form["OfficersInvolved"];
description = Request.Unvalidated["Description"];
departmentsInvolved = Request.Form["DepartmentsInvolved"];
firearmDischarged = Request.Form["FirearmDischarged"];
typeOfFirearm = Request.Form["TypeOfFirearm"];
roundsFired = Request.Form["RoundsFired"];
reason = Request.Form["Reason"];
userId = WebSecurity.CurrentUserId;
dateTime = DateTime.Now.ToString("d MMM yyyy h:mm:ss");
if (ErrorMessage == "" && Validation.IsValid()) {
var insert = "INSERT INTO Reports (Type, FirstName, LastName, Rank, Badge, SuspectFirstName, SuspectLastName, SuspectAddress, SuspectCharges, SuspectVehicleModel, SuspectVehiclePlates, SuspectVehicleColor, OfficersInvolved, Description, DepartmentsInvolved, FirearmDischarged, TypeOfFirearm, RoundsFired, Reason, UserId, DateTime)" + "VALUES (#0, #1, #2, #3, #4, #5, #6, #7, #8, #9, #10, #11, #12, #13, #14, #15, #16, #17, #18, #19, #20)";
db.Execute(insert, typeOfIncident, firstName, lastName, rank, badge, suspectFirstName, suspectLastName, suspectAddress, suspectCharges, suspectVehicleModel, suspectVehiclePlates, suspectVehicleColor, officersInvolved, description, departmentsInvolved, firearmDischarged, typeOfFirearm, roundsFired, reason, userId, dateTime);
Response.Redirect("~/Pages/Reports/Incident/Default");
}
}
}

Answer 1

You need to restore the value for each form control, eg:
<input type="text" name="FirstName" value="#Request.Form["FirstName"]" />