I do not know what happened in this code

Question

this is a Blazor code that sends my friend to me and I do not know where I highlighted the code "x" what do , please explain me .

thank you .

@page "/"
<table>
    <tr>
        <td>کد ملی:</td>
        <td colspan="3">
            <input @bind-value="profile.NationalCode" style="width:100%"/>
        </td>
    </tr>
    <tr>
        <td>نام:</td>
        <td><input @bind-value="profile.FirstName" /></td>
        <td>نام خانوادگی:</td>
        <td><input @bind-value="profile.LastName" /></td>
    </tr>
    <tr>
        <td>نام پدر:</td>
        <td><input @bind-value="profile.FatherName" /></td>
        <td>تاریخ تولد:</td>
        <td><input @bind-value="profile.BirthDate" /></td>
    </tr>
    <tr>
        <td colspan="4">
            <button class="btn btn-info" @onclick="CallNew">جدید</button>
            <button class="btn btn-success" @onclick="CallSave">ذخیره</button>
            <button class="btn btn-danger" @onclick="CallDelete">حذف</button>
        </td>
    </tr>
</table>
<hr />
<table style="width:100%">
    <thead>
        <tr>
            <th></th>
            <th>کد ملی</th>
            <th>نام</th>
            <th>نام خانوادگی</th>
            <th>تاریخ تولد</th>
            <th>نام پدر</th>
        </tr>
    </thead>
    <tbody>
        @foreach (var item in myList)
        {
            <tr>
                <td><button class="btn btn-sm btn-primary" @onclick="(()=>Edit(item.NationalCode))">ویرایش</button></td>
                <td>@item.NationalCode</td>
                <td>@item.FirstName</td>
                <td>@item.LastName</td>
                <td>@item.BirthDate</td>
                <td>@item.FatherName</td>
            </tr>
        }
    </tbody>
</table>
@code{
    class hamed
    {
        public string NationalCode { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string BirthDate { get; set; }
        public string FatherName { get; set; }
    }
    List<hamed> myList = new List<hamed>();
    hamed profile = new hamed();
    void CallNew()
    {
        profile = new hamed();
    }
    void CallDelete()
    {

        myList.Remove(value);
        CallNew();
    }
    void CallSave()
    {

            myList.Add(profile);
        profile = new hamed();
    }
    void Edit(string nationalCode)
    {

    }
}