问题

我有一个表单内的复选框和选择选项。

<label>
    <input type="checkbox" name="checkedBoxes" value="Reseller" checked />
    <span>Reseller</span>
</label>

<label>
    <input type="checkbox" name="checkedBoxes" value="SI" checked />
    <span>SI</span>
</label> //selects

...

复选框显示为已选中。

<input id="checkedBoxes" type="submit" value="Display" class="btn" />
</form>
这是我的控制器的样子：

public IActionResult combinedForm(string[] checkedBoxes, string SelectOption, string SelectOptionComp, string SelectOptionSer, string SelectOptionSoft, string SelectOptionApp)
{ //viewModel=...

  var deneme = viewModel.Where(x => x.Companies.company_type.Contains(checkedBoxes[0]));
}
如何在单击提交按钮时保持复选框的状态，最好是选择的选择选项也保持在视图中？

<details>
<summary>英文:</summary>

I have checkboxes and select options inside a form.
 

     &lt;label&gt;
                &lt;input type=&quot;checkbox&quot; name=&quot;checkedBoxes&quot; value=&quot;Reseller&quot;checked /&gt;
                &lt;span&gt;Reseller&lt;/span&gt;
            &lt;/label&gt;
    
    
            &lt;label&gt;
                &lt;input type=&quot;checkbox&quot; name=&quot;checkedBoxes&quot; value=&quot;SI&quot; checked/&gt;
                &lt;span&gt;SI&lt;/span&gt;
            &lt;/label&gt; //selects
    ...
Checkboxes are displayed as checked.
    &lt;input id=&quot;checkedBoxes&quot; type=&quot;submit&quot; value=&quot;Display&quot; class=&quot;btn&quot; /&gt;
    &lt;/form&gt;
This is what my controller looks like:

     public IActionResult combinedForm(string[] checkedBoxes, string SelectOption, string SelectOptionComp, string SelectOptionSer, string SelectOptionSoft, string SelectOptionApp)
            { //viewModel=...

              var deneme = viewModel.Where(x =&gt;x.Companies.company_type.Contains(checkedBoxes[0]));
            }

How can I keep the state of checkboxes, preferably with the selected select options on view when I clicked the submit button?


</details>


# 答案1
**得分**: 0

以下是翻译好的部分：

```html
Used viewbags for both 

@if (((string[])ViewBag.checkedBoxes).Contains("Component provider"))
{
    <label>
        <input type="checkbox" name="checkedBoxes" value="Component provider" checked />
        <span>Component provider&nbsp;</span>
    </label>
}
else if (!((string[])ViewBag.checkedBoxes).Contains("Component provider"))
{
    <label>
        <input type="checkbox" name="checkedBoxes" value="Component provider" />
        <span>Component provider&nbsp;</span>
    </label>
}
----

<select style="width:100px" id="SelectOption" name="SelectOption" value="a">
    <option>@Html.Label("-", (string)ViewBag.Name, new {@class = "mylabel" })</option>
</select>

请注意，我已经将 HTML 代码中的 HTML 实体编码进行了还原，以便更容易阅读。

 @if (((string[])ViewBag.checkedBoxes).Contains("Component provider"))
{
<label>
<input type="checkbox" name="checkedBoxes" value="Component provider" checked  />
<span>Component provider </span>
</label>
}
else if (!((string[])ViewBag.checkedBoxes).Contains("Component provider"))
{
<label>
<input type="checkbox" name="checkedBoxes" value="Component provider" />
<span>Component provider </span>
</label>
}

<select style="width:100px" id="SelectOption" name="SelectOption" value="a">
<option>@Html.Label("-",(string)ViewBag.Name,new {@class = "mylabel" })</option>