Is there a way to use parameterized queries with this code?

I've gotten this from the forum already, but one of the answers provided a way to use search parameters in a url string. Some of my tables are too big to load in a browser, so apparently I will have to find out how to add search parameters to this code. The only reason I didn't use the other code was that it showed how to do that with a calendar.
I know nothing about JSON/jQuery/razor/c#. Please help.

@{
    var db = Database.Open("LGOnline");
    var result = db.Query("SELECT * FROM CashOS");
    var data = result.Select(x => new
    {
        ID = x.ID,
        STORE_NO = x.STORE_NO,
        DATE = x.DATE,
        MWS_AMOUNT = x.MWS_AMOUNT,
        FINAL_AMOUNT = x.FINAL_AMOUNT
    }).ToArray();

    Json.Write(data, Response.Output);
    Response.ContentType = "application/json";
}

Update: I am using Microsoft WebMatrix 3. I am able to get the data from my tables with this code and it converts them to JSON. I just don't need all of it at once.

Update: I got it to do what I was trying to do. It isn't pretty, and I am open for any number of suggestions, but this made it to where I can type in the url and add &STORE_NO=55 and also i can select a date if I want to.

@{
    var db1 = Database.Open("LGOnline");
    var formValue2 = Request.Form["STORE_NO"];
    var formValue3 = Request.Form["DATE"];
    if (IsPost)
    {
        Response.Redirect("test.cshtml?&STORE_NO=" + formValue2 + "&DATE=" + formValue3);
    }
    var Keyword2 = Request.QueryString["STORE_NO"];    //Retrieves passed variable from the database search page for STORE_NO
    var Keyword3 = Request.QueryString["DATE"];    //Retrieves passed variable from the database search page for DATE

    var sqlQ = "SELECT * FROM CashOS WHERE STORE_NO LIKE @0 AND DATE LIKE @1";
    var dataQ = db1.Query(sqlQ, "%" + Keyword2 + "%", "%" + Keyword3 + "%");  
    var requestedData = dataQ.Select(x => new
    {
        ID = x.ID,
        STORE_NO = x.STORE_NO,
        DATE = x.DATE,
        MWS_AMOUNT = x.MWS_AMOUNT,
        FINAL_AMOUNT = x.FINAL_AMOUNT
    }).ToArray();

    Json.Write(dataQ, Response.Output);
    Response.ContentType = "application/json";
}

This is the output by the way: [{"ID":28,"STORE_NO":55,"DATE":"/Date(1442811600000)/","MWS_AMOUNT":10.1600,"FINAL_AMOUNT":10.1600}]

Thank You all for your help!!