[英]Passing a parameter to the Action from view
在下面的代碼中,我列出了 database 中的值。 在同一頁面中,通過單擊任何單元格,它將在日期和文本區域中顯示行數據。 在這里我想使用一個更新按鈕,它也將傳遞參數 id。 但是這里的按鈕沒有傳遞參數值
這是視圖
@model IEnumerable<ProjectTracker.Models.Note>
<table id="table" class="table" style="width: 80%;" border="1" cellpadding="3">
<thead>
<tr>
<th>
@Html.DisplayNameFor(model => model.NoteID)
</th>
<th>
@Html.DisplayNameFor(model => model.Date)
</th>
<th>
@Html.DisplayNameFor(model => model.Notes)
</th>
</tr>
</thead>
<tbody>
@foreach (var item in Model)
{
<tr>
<td>
@Html.DisplayFor(modelItem => item.NoteID)
</td>
<td>
@Html.DisplayFor(modelItem => item.Date)
</td>
<td>
@Html.DisplayFor(modelItem => item.Notes)
</td>
<td>
</td>
</tr>
}
</tbody>
</table>
<div>
<input type="hidden" name="id" id="id" />
<input class="txt" type="datetime" id="Date" style="width: 80%;" />
</div>
<div>
<textarea class="scrollabletextbox txtare" id="Notes" style="width: 80%; height:10%;"></textarea>
</div>
<script>
var table = document.getElementById('table');
for (var i = 1; i < table.rows.length; i++) {
table.rows[i].onclick = function () {
document.getElementById("id").value = this.cells[0].innerHTML;
document.getElementById("Date").value = this.cells[1].innerHTML;
document.getElementById("Notes").value = this.cells[2].innerHTML;
};
}
</script>
<div>
<input type="button" value="Update" onclick="location.href='@Url.Action("NoteEdit", "project")' + '?id=' + $('#id').val()" />
</div>
這是行動
public IActionResult NoteEdit(int? id)
{
//int NoteId =Convert.ToInt32(Request.Form["NoteID"]);
if (id == null)
{
return RedirectToAction("Notes");
}
var getnotes = _context.Notes.Find(id);
return View(getnotes);
}
[HttpPost]
public IActionResult NoteEdit(Note note)
{
if (ModelState.IsValid)
{
_context.Update(note);
_context.SaveChangesAsync();
return RedirectToAction("Notes");
}
return View(note);
}
在我的測試中,您的代碼可以正常工作,或者您可以嘗試將您的代碼修改為
<script>
var table = document.getElementById('table');
for (var i = 1; i < table.rows.length; i++) {
table.rows[i].onclick = function () {
document.getElementById("id").value = this.cells[0].innerText;
document.getElementById("Date").value = this.cells[1].innerText;
document.getElementById("Notes").value = this.cells[2].innerText;
};
}
</script>
測試結果:
@Yinqiu 你是對的,我的代碼是對的,只是做了一些小改動。 看法
<table id="table" class="table" style="width: 80%;" border="1" cellpadding="3">
<thead>
<tr>
<th>
@Html.DisplayNameFor(model => model.NoteID)
</th>
<th>
@Html.DisplayNameFor(model => model.Date)
</th>
<th>
@Html.DisplayNameFor(model => model.Notes)
</th>
</tr>
</thead>
<tbody>
@foreach (var item in Model)
{
<tr>
<td>
@Html.DisplayFor(modelItem => item.NoteID)
</td>
<td>
@Html.DisplayFor(modelItem => item.Date)
</td>
<td>
@Html.DisplayFor(modelItem => item.Notes)
</td>
<td>
</td>
</tr>
}
</tbody>
</table>
上面和下面的代碼包含在同一視圖中
下面的代碼在“@using (Html.BeginForm())”中
<div>
<div>
<input type="hidden" name="id" id="id" />
<input class="txt" type="datetime" id="Date" value="@ViewBag.DATE" name="Date" style="width: 80%;" />
</div>
<div>
<textarea class="scrollabletextbox txtare" id="Notes" name="Notes" style="width: 80%; height:30%;"></textarea>
</div>
<script>
var table = document.getElementById('table');
for (var i = 1; i < table.rows.length; i++) {
table.rows[i].onclick = function () {
document.getElementById("id").value = this.cells[0].innerHTML;
document.getElementById("Date").value = this.cells[1].innerHTML;
document.getElementById("Notes").value = this.cells[2].innerHTML.trim();
};
}
</script>
<div>
<input type="submit" value="Update" formaction='/Project/NoteEdit' />
<input type="submit" value="Add" formaction='/Project/Popup' />
<input type="submit" value="Delete" formaction='/Project/NoteDelete' />
</div>
行動
[HttpPost]
public IActionResult NoteEdit(int? id,DateTime Date,string Notes)
{
var note = _context.Notes.Find(id);
note.Date = Date;
note.Notes = Notes;
if (ModelState.IsValid)
{
_context.Update(note);
_context.SaveChangesAsync();
return RedirectToAction("Notes");
}
return View(note);
}
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