[英]How to pass textbox and dropdown value from view to controller in MVC C#
我想知道如何将文本框中的值和选定值传递给 controller。 目前我能够到达我的 controller 但在文本框中输入的值和在下拉列表中选择的值始终是 null 到达 Z594C103F2C6E04C3D8AB059F031这使用 ViewData 代替?
我的文本框、下拉菜单和搜索按钮
<div id="cc" class="modal fade" tabindex="-1" role="dialog">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title">Advanced Search</h4>
</div>
@using (Html.BeginForm("AdvancedFilteredSearch", "FilteredSearch", FormMethod.Get, new { id = "frmAdvancedSearch", @class = "form-horizontal", role = "form" }))
{
<div class="modal-body">
<div class="dropdown">
<br />
<select class="form-control" id="condition" name="condition">
<option value="">Select Search Conditions</option>
<option value="1">Between</option>
<option value="2">Or</option>
</select>
</div>
<div>
<i class="fas fa-envelope prefix grey-text"></i>
<input type="text" id="search" name="search" class="form-control validate" placeholder="Type here">
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Clear Filters</button>
<button type="button" onclick="location.href = '@Url.Action("FilteredSearch", "FilteredSearch")'"class="btn btn-primary">Search</button>
</div>
}
</div>
</div>
</div>
**My Controller Method**
public ActionResult AdvancedFilteredSearch(FormCollection collection)
{
string value = Convert.ToString(collection["search"]);
string value = Convert.ToString(collection["condition"]);
return View(db.marketingdbclients_dataTable.Where(a => a.ClientId < 500));
}
以前从未使用过 FormCollection class。 但据我记得,当您提交表单时,您可以简单地执行以下操作:
[HttpPost]
public ActionResult AdvancedFilteredSearch(int condition, string search )
{
return View(db.marketingdbclients_dataTable.Where(a => a.ClientId < 500));
}
您的变量“条件”和“搜索”应该与您的 HTML 表单元素的 id 相同。 并且不要忘记您的方法之前的 HttpPost 属性。
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