[英]post row where radio button is checked
I try to post data row in which radio button is checked but failed, what is wrong?我尝试发布选中单选按钮但失败的数据行,有什么问题?
View:看法:
<form id="numbers-form" method="post" action="/Numbers/Numbers">
<table id="numbers">
<tr>
<th>
prvi_br
</th>
<th>
drugi_br
</th>
<th>
treci_br
</th>
</tr>
<% int rb = 1; %>
<% foreach (var item in Model) { %>
<tr>
<td>
<%= Html.Encode(item.prvi_br) %>
<input type="radio" name="<%= Html.Encode(rb) %>" value="<%= Html.Encode(rb) %>" id='<%= Html.Encode(item.prvi_br) %>'/>
</td>
<td>
<%= Html.Encode(item.drugi_br) %>
<input type="radio" name="<%= Html.Encode(rb)%>" value="<%= Html.Encode(rb) %>" id='<%= Html.Encode(item.drugi_br) %>'/>
</td>
<td>
<%= Html.Encode(item.treci_br) %>
<input type="radio" name="<%= Html.Encode(rb)%>" value="<%= Html.Encode(rb) %>" id='<%= Html.Encode(item.treci_br) %>'/>
</td>
</tr>
<% rb++; %>
<% } %>
</table>
<p>
<input type="submit" value="Save" />
</p>
</form>
Controller action:控制器动作:
[HttpPost]
public ActionResult Numbers(int[] rb)
{
brojevi br = new brojevi();
for (int i = 1; i <= rb.Length; i++) //in this line I have error:Object reference not set to an instance of an object.
{
br.prvi_br = i;
br.drugi_br = i+1;
br.treci_br = i+3;
}
numbers.AddTobrojevi(br);
numbers.SaveChanges();
return View();
}
Shouldn't your Numbers method accept a FormCollection instead of an int[]?您的 Numbers 方法不应该接受 FormCollection 而不是 int[] 吗?
Something like this seems to work, but not knowing your functionality, it's hard to tell if it will suit your purpose:像这样的东西似乎有效,但不知道您的功能,很难判断它是否适合您的目的:
[HttpPost]
public ActionResult Numbers(FormCollection fc)
{
foreach (string key in fc.Keys)
{
int i = Convert.ToInt32(key);
// i = the number of the item that was selected.
}
return View();
}
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