I have little problem with button setting on view. I want to keep button “Complete” right next to “SearchButton”. “Complete” button have to send selected checkbox (ID) to action Complete. In full code iHow can i do it ?

div class="d-flex justify-content-between">
    <form id="mainForm" asp-controller="Structures" asp-action="Index" method="get" class="form-inline">
        <div class="form-group mb-2">
            <label for="SearchString" class="sr-only">Type Order number</label>
            Order number: <input type="text" name="SearchString" class="form-control ml-2" />
            <button type="submit" class="btn btn-primary ml-2">Search</button>
        </div>
    </form>
</div>

<div id="All" class="tabcontent">
    <div class="container">
        <div class="row">
            <div class="col-md-14">
                <form id="completeForm" asp-controller="Structures" asp-action="Complete" method="post">
                    <div class="tab d-flex justify-content-between align-items-center mb-3">
                        <div>
                            <button class="btn btn-success" onclick="openCity(event, 'All')">All</button>
                            <button class="btn btn-success" onclick="openCity(event, 'Inventory')">Inventory</button>
                        </div>
                        <div class="input-container d-flex justify-content-end">
                            <button id="selectAllYellow" class="btn btn-primary">Type Yellow</button>
                            <button id="selectAllGreen" class="btn btn-primary ml-2">Type Green</button>
                        </div>
                    </div>
                    <table id="dataTable" class="table">
                        <thead>
                            <tr>
                                <th>Main</th>
                                <th>Quantity</th>
                                <th>Status</th>
                                <th>Check</th>
                            </tr>
                        </thead>
                        <tbody>
                            @foreach (var item in Model.OrderList)
                            {
                                <tr>
                                    <td class="Main">@Html.DisplayFor(modelItem => item.Main)</td>>
                                    <td class="Quantity">@Html.DisplayFor(modelItem => item.Quantity)</td>
                                    <td class="Status">@Html.DisplayFor(modelItem => item.Order.Status)</td>
                                    <td>
                                        <input id="@item.ID" type="checkbox" name="selectedItems" value="@item.ID" />
                                    </td>
                                </tr>
                            }
                        </tbody>
                    </table>
                </form>
            </div>
        </div>
    </div>
</div>

I was trying to do it this way, but it didn’t send any Id to Complete action.

<div class="d-flex justify-content-between">
<form id="mainForm" asp-controller="Structures" asp-action="Index" method="get" class="form-inline">
    <div class="form-group mb-2">
        <label for="SearchString" class="sr-only">Type Order number</label>
        Order number: <input type="text" name="SearchString" class="form-control ml-2" />
        <button type="submit" class="btn btn-primary ml-2">Search</button>
</form>

<form id="completeForm" asp-controller="Structures" asp-action="Complete" method="post">
    <input type="submit" class="btn btn-success ml-2" value="Kompletacja" />
</form>
</div>