ASP.NET c# 修复了函数库中自定义确认消息框的 OK 事件

我们做了一个函数，通过javascript动态显示从c#到javascript的modalpopupmessage，它工作正常，但我们想添加一个参数，以便我们可以传递一个函数委托（或事件处理程序），如果用户按下OK按钮，就会调用该函数委托（或事件处理程序）。有什么建议吗？

Postdata：我们不想要典型的"确认您要按下此按钮"解决方案，而是在必要时在流程的任何部分要求确认的功能。示例：用户单击删除项目按钮，在代码隐藏中检查项目是否有一些依赖关系，因此显示一条确认消息，其中包含传递委托 deleteitemconfirmed（） 的 mensaje 函数，如果用户单击确定调用委托...

库中的功能：

public static void Mensaje(string mensaje, EventHandler EventoClickLLamar, bool botoncancelar, string cssclass, Color colorfondo)
{
    string colorfondox = ColorTranslator.ToHtml(colorfondo);
    string idbotonok = EventoClickLLamar == null ? "" : EventoClickLLamar.Method.Name.Replace("_Click", "");
    string script =
        " function verifyStyle(selector) {" + " 'r'n" +
        "   var rules;" + " 'r'n" +
        "   var haveRule = false;" + " 'r'n" +
        "                 " + " 'r'n" +
        "   if (typeof document.styleSheets != '"undefined'") {   //is this supported" + " 'r'n" +
        "     var cssSheets = document.styleSheets;" + " 'r'n" +
        "     " + " 'r'n" +
        "     outerloop:" + " 'r'n" +
        "     for (var i = 0; i < cssSheets.length; i++) {" + " 'r'n" +
        "         " + " 'r'n" +
        "          //using IE or FireFox/Standards Compliant" + " 'r'n" +
        "         rules =  (typeof cssSheets[i].cssRules != '"undefined'") ? cssSheets[i].cssRules : cssSheets[i].rules;" +
        " 'r'n" +
        "         " + " 'r'n" +
        "          for (var j = 0; j < rules.length; j++) {" + " 'r'n" +
        "              if (rules[j].selectorText == selector) {" + " 'r'n" +
        "                      haveRule = true;" + " 'r'n" +
        "                     break outerloop;" + " 'r'n" +
        "              }" + " 'r'n" +
        "         }//innerloop" + " 'r'n" +
        "         " + " 'r'n" +
        "     }//outer loop" + " 'r'n" +
        "   }//endif" + " 'r'n" +
        "   " + " 'r'n" +
        "     return haveRule;" + " 'r'n" +
        " }//eof" + " 'r'n" +
        " function setFading(o, b, e, d, f) {" + " 'r'n" +
        " var t = setInterval" + " 'r'n" +
        "         (" + " 'r'n" +
        "           function () {" + " 'r'n" +
        "               b = stepFX(b, e, 2);" + " 'r'n" +
        "               setOpacity(o, b / 100);" + " 'r'n" +
        "               if (b == e) {" + " 'r'n" +
        "                   if (t) { clearInterval(t); t = null; }" + " 'r'n" +
        "                   if (typeof f == 'function') { f(); }" + " 'r'n" +
        "               }" + " 'r'n" +
        "           }" + " 'r'n" +
        "         , d / 50);" + " 'r'n" +
        " }" + " 'r'n" +
        " function setOpacity(e, o) {" + " 'r'n" +
        "   // for IE" + " 'r'n" +
        "   e.style.filter = 'alpha(opacity=' + o * 100 + ')';" + " 'r'n" +
        "   // for others" + " 'r'n" +
        "   e.style.opacity = o;" + " 'r'n" +
        " }" + " 'r'n" +
        " function stepFX(b, e, s) {" + " 'r'n" +
        "   return b > e ? b - s > e ? b - s : e : b < e ? b + s < e ? b + s : e : b;" + " 'r'n" +
        " }" + " 'r'n" +
        " // we may consider adding frames support" + " 'r'n" +
        " var w = window;" + " 'r'n" +
        " // shortcut to document" + " 'r'n" +
        " var d = w.document;" + " 'r'n" +
        " // canvas, window width and window height" + " 'r'n" +
        " var r = d.documentElement;" + " 'r'n" +
        " var ww = w.innerWidth ? w.innerWidth + w.pageXOffset : r.clientWidth + r.scrollLeft;" + " 'r'n" +
        " var wh = w.innerHeight ? w.innerHeight + w.pageYOffset : r.clientHeight + r.scrollTop;" + " 'r'n" +
        " // create a block element" + " 'r'n" +
        " var b = d.createElement('div');" + " 'r'n" +
        " b.id = 'Message';" + " 'r'n" +
        " b.className = '" + cssclass + "' || '';" + " 'r'n" +
        " b.style.cssText = 'top:-9999px;left:-9999px;position:absolute;white-space:nowrap;z-index: 1001;';" +
        " 'r'n" +
        " // classname not passed, set defaults" + " 'r'n" +
        " if (!verifyStyle('"." + cssclass + "'")) {" + " 'r'n" +
        "   b.style.margin = '0px 0px';" + " 'r'n" +
        "   b.style.padding = '8px 8px';" + " 'r'n" +
        "   b.style.border = '1px solid #A4BED0';" + " 'r'n" +
        "   b.style.backgroundColor = '#E0ECF1';" + " 'r'n" +
        " }" + " 'r'n" +
        " var bx = d.createElement('div');" + " 'r'n" +
        " bx.style.cssText = 'position: absolute;left:0px;top:0px;width:100%;height:100%;text-align:center;z-index: 1000;background-color: " + //va seguido sin salto
        colorfondox + ";opacity:0.5;filter:alpha(opacity=50);'" + " 'r'n" +
        " d.body.insertBefore(bx, d.body.firstChild);" + " 'r'n" +
        " d.body.insertBefore(b, d.body.firstChild); " + " 'r'n" +
        " // write HTML fragment to it  " + " 'r'n" +
        " b.innerHTML = '<table><tr><td>" + mensaje + "</td></tr><tr><td align='"center'">" +
        (string.IsNullOrEmpty(idbotonok)
        ? "<input type='"submit'" value='"Aceptar'" onClick='"disabled=true;setFading(b, 100, 0, 1000, function () { d.body.removeChild(bx); d.body.removeChild(b); });'" >"
        : "<input type='"submit'" value='"Aceptar'" onClick='"__doPostBack('''" + idbotonok + "''','''''')'" id='"" + idbotonok + "'" >") +
        (botoncancelar
        ? "<input type='"submit'" value='"Cancelar'" onClick='"disabled=true;setFading(b, 100, 0, 1000, function () { d.body.removeChild(bx); d.body.removeChild(b); });'" >"
        : "") +
        "</td></tr></table>';" + " 'r'n" +
        " // save width/height before hiding " + " 'r'n" +
        " var bw = b.offsetWidth;" + " 'r'n" +
        " var bh = b.offsetHeight;" + " 'r'n" +
        " // hide, move and then show" + " 'r'n" +
        " b.style.display = 'none';" + " 'r'n" +
        " b.style.top = (wh / 2 - bh / 2) + 'px'; //center" + " 'r'n" +
        " b.style.left = (ww / 2 - bw / 2) + 'px'; //center" + " 'r'n" +
        " b.style.display = 'block';" + " 'r'n";
    ScriptManager.RegisterClientScriptBlock((Page)HttpContext.Current.Handler, typeof(Page), "mensaje", script, true);
}

测试页面：

public partial class Test: Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    }
    btnDeleteItem_Click(object sender, EventArgs e)
    {
        //DB checks
        ....
        ....
        //After x checks against Database we see the item has some dependency so we ask for confirmation
        FunctionsLibrary.Mensaje("This Item has x dependency, are you sure you want to delete it?", btnDeleteItemConfirmed_Click, true, "cssclassx", System.Drawing.Color.Gray);
    }
    btnDeleteItemConfirmed_Click(object sender, EventArgs e)
    {
        //delete item definitively, handle dependencies etc...
    }
}

我们无法完成的选项（以防我们走上正轨但出了点问题）：

• 情况 1：（在我们的示例代码中实现的那个）使用 EventHandler + __doPostBack 因此，如果您在页面中定义了buttonid_click，它将在回发时调用。（事件没有上升...我们认为这是因为我们没有在页面加载中添加 Ok 控件......这给了我们案例 2）

• 情况2：保存通过的委托函数，注册事件Page.Load+=GetPostBackControlID（），在下面的页面加载中调用GetPostBackControlID（），在那里我们检查点击的控件ID是否是我们的确定按钮，如果是这样，调用委托函数