如果您想要一个实际的 Ajax button 元素，而不是样式 hack，它也是可能的，但有点复杂。遗憾的是，MS 尚未选择将 ActionButton 添加到 Html 和 Ajax 帮助程序，因为当您删除私有支持方法的重复时，差异实际上非常小（您只需要 ActionButton 和 GenerateButton方法如下所示）。
最终结果是您可以拥有像 ajax 动作链接一样触发的真实按钮：
例如
@Ajax.ActionButton("Delete", "Delete", "document",
new { id = ViewBag.Id },
new AjaxOptions()
{
Confirm="Do you really want to delete this file?",
HttpMethod = "Get",
UpdateTargetId = "documentlist" },
new { id = "RefreshDocuments"
})
1。创建一个 AjaxHelper 扩展
下面的代码基于 AjaxExtensions 类的反编译，因为许多必需的辅助方法未在 HtmlHelper 上公开。
public static partial class AjaxExtensions
{
public static MvcHtmlString ActionButton(this AjaxHelper ajaxHelper, string buttonText, string actionName, string controllerName, object routeValuesBlah, AjaxOptions ajaxOptions, object htmlAttributesBlah)
{
// Convert generic objects to specific collections
RouteValueDictionary routeValues = new RouteValueDictionary(routeValuesBlah);
RouteValueDictionary htmlAttributes = HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributesBlah);
if (string.IsNullOrEmpty(buttonText))
throw new ArgumentException("Button text must be provided");
string targetUrl = UrlHelper.GenerateUrl((string)null, actionName, controllerName, routeValues, ajaxHelper.RouteCollection, ajaxHelper.ViewContext.RequestContext, true);
return MvcHtmlString.Create(GenerateButton(ajaxHelper, buttonText, targetUrl, AjaxExtensions.GetAjaxOptions(ajaxOptions), htmlAttributes));
}
public static string GenerateButton(AjaxHelper ajaxHelper, string linkText, string targetUrl, AjaxOptions ajaxOptions, IDictionary<string, object> htmlAttributes)
{
TagBuilder tagBuilder = new TagBuilder("input");
tagBuilder.MergeAttribute("value", linkText);
tagBuilder.MergeAttributes<string, object>(htmlAttributes);
tagBuilder.MergeAttribute("href", targetUrl);
tagBuilder.MergeAttribute("type", "button");
if (ajaxHelper.ViewContext.UnobtrusiveJavaScriptEnabled)
tagBuilder.MergeAttributes<string, object>(ajaxOptions.ToUnobtrusiveHtmlAttributes());
else
tagBuilder.MergeAttribute("onclick", AjaxExtensions.GenerateAjaxScript(ajaxOptions, "Sys.Mvc.AsyncHyperlink.handleClick(this, new Sys.UI.DomEvent(event), {0});"));
return tagBuilder.ToString(TagRenderMode.Normal);
}
private static string GenerateAjaxScript(AjaxOptions ajaxOptions, string scriptFormat)
{
string str = ajaxOptions.ToJavascriptString();
return string.Format((IFormatProvider)CultureInfo.InvariantCulture, scriptFormat, new object[1] { str });
}
private static AjaxOptions GetAjaxOptions(AjaxOptions ajaxOptions)
{
if (ajaxOptions == null)
return new AjaxOptions();
else
return ajaxOptions;
}
public static string ToJavascriptString(this AjaxOptions ajaxOptions)
{
StringBuilder stringBuilder = new StringBuilder("{");
stringBuilder.Append(string.Format((IFormatProvider)CultureInfo.InvariantCulture, " insertionMode: {0},", new object[1]
{
ajaxOptions.InsertionModeString()
}));
stringBuilder.Append(ajaxOptions.PropertyStringIfSpecified("confirm", ajaxOptions.Confirm));
stringBuilder.Append(ajaxOptions.PropertyStringIfSpecified("httpMethod", ajaxOptions.HttpMethod));
stringBuilder.Append(ajaxOptions.PropertyStringIfSpecified("loadingElementId", ajaxOptions.LoadingElementId));
stringBuilder.Append(ajaxOptions.PropertyStringIfSpecified("updateTargetId", ajaxOptions.UpdateTargetId));
stringBuilder.Append(ajaxOptions.PropertyStringIfSpecified("url", ajaxOptions.Url));
stringBuilder.Append(ajaxOptions.EventStringIfSpecified("onBegin", ajaxOptions.OnBegin));
stringBuilder.Append(ajaxOptions.EventStringIfSpecified("onComplete", ajaxOptions.OnComplete));
stringBuilder.Append(ajaxOptions.EventStringIfSpecified("onFailure", ajaxOptions.OnFailure));
stringBuilder.Append(ajaxOptions.EventStringIfSpecified("onSuccess", ajaxOptions.OnSuccess));
--stringBuilder.Length;
stringBuilder.Append(" }");
return ((object)stringBuilder).ToString();
}
public static string InsertionModeString(this AjaxOptions ajaxOptions)
{
switch (ajaxOptions.InsertionMode)
{
case InsertionMode.Replace:
return "Sys.Mvc.InsertionMode.replace";
case InsertionMode.InsertBefore:
return "Sys.Mvc.InsertionMode.insertBefore";
case InsertionMode.InsertAfter:
return "Sys.Mvc.InsertionMode.insertAfter";
default:
return ((int)ajaxOptions.InsertionMode).ToString((IFormatProvider)CultureInfo.InvariantCulture);
}
}
public static string EventStringIfSpecified(this AjaxOptions ajaxOptions, string propertyName, string handler)
{
if (string.IsNullOrEmpty(handler))
return string.Empty;
return string.Format((IFormatProvider)CultureInfo.InvariantCulture, " {0}: Function.createDelegate(this, {1}),",
new object[2]
{
propertyName,
handler
});
}
public static string PropertyStringIfSpecified(this AjaxOptions ajaxOptions, string propertyName, string propertyValue)
{
if (string.IsNullOrEmpty(propertyValue))
return string.Empty;
string str = propertyValue.Replace("'", "\\'");
return string.Format((IFormatProvider)CultureInfo.InvariantCulture, " {0}: '{1}',",
new object[2]
{
propertyName,
str
});
}
}
2。修改jquery.unobtrusive-ajax.js
只需要对 jquery.unobtrusive-ajax.js 的 JQuery 做一点小改动就可以接受新的按钮对象，因为它非常接近开始。首先选择器需要接受按钮和链接，然后 href 需要来自一个属性，以便非链接可以提供它（不严格符合浏览器，但目前可以使用）。
$(document).on("click", "input[data-ajax=true],a[data-ajax=true]", function (evt) {
evt.preventDefault();
asyncRequest(this, {
url: $(this).attr("href"),
type: "GET",
data: []
});
});
*注意：这是使用截至回答日期的所有内容的最新版本（MVC 5）