是否有一些简单的方法来处理来自同一个表单的多个提交按钮?例如:
<% Html.BeginForm("MyAction", "MyController", FormMethod.Post); %>
<input type="submit" value="Send" />
<input type="submit" value="Cancel" />
<% Html.EndForm(); %>
知道如何在ASP中做到这一点吗?NET框架测试版?我在谷歌上搜索的所有例子中都有单个按钮。
是否有一些简单的方法来处理来自同一个表单的多个提交按钮?例如:
<% Html.BeginForm("MyAction", "MyController", FormMethod.Post); %>
<input type="submit" value="Send" />
<input type="submit" value="Cancel" />
<% Html.EndForm(); %>
知道如何在ASP中做到这一点吗?NET框架测试版?我在谷歌上搜索的所有例子中都有单个按钮。
当前回答
我的JQuery方法使用扩展方法:
public static MvcHtmlString SubmitButtonFor<TController>(this HtmlHelper helper, Expression<Action<TController>> action, string value) where TController : Controller
{
RouteValueDictionary routingValues = Microsoft.Web.Mvc.Internal.ExpressionHelper.GetRouteValuesFromExpression(action);
var onclick = string.Format("$('form').first().attr('action', '/{0}')", string.Join("/", routingValues.Values.ToArray().Where(x => x != null).Select(x => x.ToString()).ToArray()));
var html = "<input type=\"submit\" value=\"" + value + "\" onclick=\"" + onclick + "\" />";
return MvcHtmlString.Create(html);
}
你可以这样使用它:
@(Html.SubmitButtonFor<FooController>(c => c.Save(null), "Save"))
它是这样渲染的:
<input type="submit" value="Save" onclick="$('form').first().attr('action', '/Foo/Save')" >
其他回答
使用自定义助手(创建一个“Helpers.”文件)。cshtml" App_Code文件夹内,在你的项目的根)用javascript重写(在一个'onclick'事件)表单的'动作'属性,你想要的东西,然后提交它。
助手可以是这样的:
@helper SubmitButton(string text, string controller,string action)
{
var uh = new System.Web.Mvc.UrlHelper(Context.Request.RequestContext);
string url = @uh.Action(action, controller, null);
<input type=button onclick="(
function(e)
{
$(e).parent().attr('action', '@url'); //rewrite action url
//create a submit button to be clicked and removed, so that onsubmit is triggered
var form = document.getElementById($(e).parent().attr('id'));
var button = form.ownerDocument.createElement('input');
button.style.display = 'none';
button.type = 'submit';
form.appendChild(button).click();
form.removeChild(button);
}
)(this)" value="@text"/>
}
然后把它用作:
@Helpers.SubmitButton("Text for 1st button","ControllerForButton1","ActionForButton1")
@Helpers.SubmitButton("Text for 2nd button","ControllerForButton2","ActionForButton2")
...
在你的表单里面。
我已经为HtmlHelper创建了一个ActionButton方法。它将在OnClick事件中生成带有javascript的普通输入按钮,将表单提交给指定的控制器/动作。
像这样使用辅助器
@Html.ActionButton("MyControllerName", "MyActionName", "button text")
这将生成以下HTML
<input type="button" value="button text" onclick="this.form.action = '/MyWebsiteFolder/MyControllerName/MyActionName'; this.form.submit();">
下面是扩展方法代码:
VB。网
<System.Runtime.CompilerServices.Extension()>
Function ActionButton(pHtml As HtmlHelper, pAction As String, pController As String, pRouteValues As Object, pBtnValue As String, pBtnName As String, pBtnID As String) As MvcHtmlString
Dim urlHelperForActionLink As UrlHelper
Dim btnTagBuilder As TagBuilder
Dim actionLink As String
Dim onClickEventJavascript As String
urlHelperForActionLink = New UrlHelper(pHtml.ViewContext.RequestContext)
If pController <> "" Then
actionLink = urlHelperForActionLink.Action(pAction, pController, pRouteValues)
Else
actionLink = urlHelperForActionLink.Action(pAction, pRouteValues)
End If
onClickEventJavascript = "this.form.action = '" & actionLink & "'; this.form.submit();"
btnTagBuilder = New TagBuilder("input")
btnTagBuilder.MergeAttribute("type", "button")
btnTagBuilder.MergeAttribute("onClick", onClickEventJavascript)
If pBtnValue <> "" Then btnTagBuilder.MergeAttribute("value", pBtnValue)
If pBtnName <> "" Then btnTagBuilder.MergeAttribute("name", pBtnName)
If pBtnID <> "" Then btnTagBuilder.MergeAttribute("id", pBtnID)
Return MvcHtmlString.Create(btnTagBuilder.ToString(TagRenderMode.Normal))
End Function
c# (c#代码只是从VB DLL中反编译的,所以它可以得到一些美化…但是时间太短了:-)
public static MvcHtmlString ActionButton(this HtmlHelper pHtml, string pAction, string pController, object pRouteValues, string pBtnValue, string pBtnName, string pBtnID)
{
UrlHelper urlHelperForActionLink = new UrlHelper(pHtml.ViewContext.RequestContext);
bool flag = Operators.CompareString(pController, "", true) != 0;
string actionLink;
if (flag)
{
actionLink = urlHelperForActionLink.Action(pAction, pController, System.Runtime.CompilerServices.RuntimeHelpers.GetObjectValue(pRouteValues));
}
else
{
actionLink = urlHelperForActionLink.Action(pAction, System.Runtime.CompilerServices.RuntimeHelpers.GetObjectValue(pRouteValues));
}
string onClickEventJavascript = "this.form.action = '" + actionLink + "'; this.form.submit();";
TagBuilder btnTagBuilder = new TagBuilder("input");
btnTagBuilder.MergeAttribute("type", "button");
btnTagBuilder.MergeAttribute("onClick", onClickEventJavascript);
flag = (Operators.CompareString(pBtnValue, "", true) != 0);
if (flag)
{
btnTagBuilder.MergeAttribute("value", pBtnValue);
}
flag = (Operators.CompareString(pBtnName, "", true) != 0);
if (flag)
{
btnTagBuilder.MergeAttribute("name", pBtnName);
}
flag = (Operators.CompareString(pBtnID, "", true) != 0);
if (flag)
{
btnTagBuilder.MergeAttribute("id", pBtnID);
}
return MvcHtmlString.Create(btnTagBuilder.ToString(TagRenderMode.Normal));
}
这些方法具有各种参数,但是为了便于使用,您可以创建一些重载,只使用所需的参数。
刚刚写了一篇相关的文章: 多个提交按钮与ASP。NET MVC:
基本上,我用的不是ActionMethodSelectorAttribute,而是 ActionNameSelectorAttribute,它允许我假装动作名是我想要的任何东西。幸运的是,ActionNameSelectorAttribute不只是让我指定操作名称,而是我可以选择当前操作是否与请求匹配。
这就是我的班级(顺便说一句,我不太喜欢这个名字):
public class HttpParamActionAttribute : ActionNameSelectorAttribute {
public override bool IsValidName(ControllerContext controllerContext, string actionName, MethodInfo methodInfo) {
if (actionName.Equals(methodInfo.Name, StringComparison.InvariantCultureIgnoreCase))
return true;
if (!actionName.Equals("Action", StringComparison.InvariantCultureIgnoreCase))
return false;
var request = controllerContext.RequestContext.HttpContext.Request;
return request[methodInfo.Name] != null;
}
}
只需要像这样定义一个表单:
<% using (Html.BeginForm("Action", "Post")) { %>
<!— …form fields… -->
<input type="submit" name="saveDraft" value="Save Draft" />
<input type="submit" name="publish" value="Publish" />
<% } %>
控制器有两个方法
public class PostController : Controller {
[HttpParamAction]
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult SaveDraft(…) {
//…
}
[HttpParamAction]
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Publish(…) {
//…
}
}
如您所见,该属性根本不需要指定任何内容。此外,按钮的名称直接转换为方法名称。此外(我还没有尝试过)这些应该作为正常的动作以及,所以你可以张贴到他们中的任何一个 直接。
Eilon建议你可以这样做:
If you have more than one button you can distinguish between them by giving each button a name: <input type="submit" name="SaveButton" value="Save data" /> <input type="submit" name="CancelButton" value="Cancel and go back to main page" /> In your controller action method you can add parameters named after the HTML input tag names: public ActionResult DoSomeStuff(string saveButton, string cancelButton, ... other parameters ...) { ... } If any value gets posted to one of those parameters, that means that button was the one that got clicked. The web browser will only post a value for the one button that got clicked. All other values will be null. if (saveButton != null) { /* do save logic */ } if (cancelButton != null) { /* do cancel logic */ }
我喜欢这个方法,因为它不依赖于提交按钮的值属性,这个属性比分配的名称更有可能改变,并且不需要启用javascript
看到的: http://forums.asp.net/p/1369617/2865166.aspx#2865166
你可以这样写:
<% Html.BeginForm("MyAction", "MyController", FormMethod.Post); %>
<input type="submit" name="button" value="Send" />
<input type="submit" name="button" value="Cancel" />
<% Html.EndForm(); %>
然后在页面中检查name == "Send"或者name == "Cancel"…