Question

<asp:Button runat="server" ID="btnUserDelete" Text="Delete" CssClass="GreenLightButton"
                           OnClick="BtnUserDelete_Click"
                           OnClientClick="return UserDeleteConfirmation();" 
 meta:resourcekey="BtnUserDeleteResource1" />

我试过了：

function UserDeleteConfirmation() {
        if (confirm("Are you sure you want to delete this user?"))
            return true;
        else
            return false;
}

和

function UserDeleteConfirmation() {
    if (confirm("Are you sure you want to delete this user?")) {
            __doPostBack(btnUserDelete, '');
    }

    return false;
 }

并且它们都不起作用。

Answer 1

试试这个：

<asp:Button runat="server" ID="btnUserDelete" Text="Delete" CssClass="GreenLightButton"
                       OnClick="BtnUserDelete_Click"
                       OnClientClick="if ( ! UserDeleteConfirmation()) return false;" 
 meta:resourcekey="BtnUserDeleteResource1" />

这样“返回”仅在用户点击“取消”时执行，而不是在用户点击“确定”时执行。

顺便说一句，您可以将UserDeleteConfirmation函数缩短为：

function UserDeleteConfirmation() {
    return confirm("Are you sure you want to delete this user?");
}

Answer 2

这里有一些解决方案可行，但我没有看到有人在这里解释实际发生的事情，所以即使这是2岁，我也会解释它。

没有什么＆＃34;错误＆＃34;使用您正在添加的onclientclick javascript。问题是asp.net正在添加onclick的东西，以便在你运行的任何代码之后运行。

所以例如这个ASPX：

<asp:Button ID="btnDeny" runat="server" CommandName="Deny" Text="Mark 'Denied'" OnClientClick="return confirm('Are you sure?');" />

渲染时

变成了这个HTML：

<input name="rgApplicants$ctl00$ctl02$ctl00$btnDeny" id="rgApplicants_ctl00_ctl02_ctl00_btnDeny" 
onclick="return confirm('Are you sure?');__doPostBack('rgApplicants$ctl00$ctl02$ctl00$btnDeny','')" type="button" value="Mark 'Denied'" abp="547">

如果你仔细观察，永远不会达到__doPostBack的东西，因为＆＃34;确认＆＃34;在到达__doPostBack之前，它总会返回true / false。

这就是为什么你需要让确认只返回false而不是在值为true时返回。从技术上讲，如果它返回true或false并不重要，这个实例中的任何返回都会阻止调用__doPostBack，但是对于约定我会留下它以便在false时返回false并且什么都不做为了真实。

Answer 3

您可以将上述答案放在这样的一行中。而且您不需要编写该函数。

    <asp:Button runat="server" ID="btnUserDelete" Text="Delete" CssClass="GreenLightButton"
         OnClick="BtnUserDelete_Click" meta:resourcekey="BtnUserDeleteResource1"
OnClientClick="if ( !confirm('Are you sure you want to delete this user?')) return false;"  />

Answer 4

使用jQuery UI对话框：

SCRIPT：

<link rel="stylesheet" href="http://code.jquery.com/ui/1.9.2/themes/base/jquery-ui.css" />
<script src="http://code.jquery.com/jquery-1.8.3.js"></script>
<script src="http://code.jquery.com/ui/1.9.2/jquery-ui.js"></script>
<script>
 $(function () {

            $("#<%=btnUserDelete.ClientID%>").on("click", function (event) {
                event.preventDefault();
                $("#dialog-confirm").dialog({
                    resizable: false,
                    height: 140,
                    modal: true,
                    buttons: {
                        Ok: function () {
                            $(this).dialog("close");
                            __doPostBack($('#<%= btnUserDelete.ClientID %>').attr('name'), '');
                        },
                        Cancel: function () {
                            $(this).dialog("close");
                        }
                    }
                });
            });
 });
</script>

HTML：

<div id="dialog-confirm" style="display: none;" title="Confirm Delete">
    <p><span class="ui-icon ui-icon-alert" style="float: left; margin: 0 7px 20px 0;"></span>Are you sure you want to delete this user?</p>
</div>

Answer 5

试试这个：

<asp:Button runat="server" ID="btnUserDelete" Text="Delete" CssClass="GreenLightButton" 
   onClientClick=" return confirm('Are you sure you want to delete this user?')" 
   OnClick="BtnUserDelete_Click"  meta:resourcekey="BtnUserDeleteResource1"  />

Answer 6

代码是这样的：

在Aspx：

<asp:Button ID="btnSave" runat="server" Text="Save" OnClick="btnSave_Click" CausesValidation=true />

在Cs中：

protected void Page_Load(object sender, System.EventArgs e)
{
     if (!IsPostBack)
     {
         btnSave.Attributes["Onclick"] = "return confirm('Do you really want to save?')";          
     }
}

protected void btnSave_Click(object sender, EventArgs e){
    Page.Validate();
    if (Page.IsValid)
    {
       //Update the database
         lblMessage.Text = "Saved Successfully";
    }
}

Answer 7

试试这个： OnClientClick="return confirm('Are you sure ?');" 同时设置：CausesValidation="False"

Answer 8

试试这个：

<asp:Button runat="server" ID="btnDelete" Text="Delete"
   onClientClick="javascript:return confirm('Are you sure you want to delete this user?');" OnClick="BtnDelete_Click" />

Answer 9

这是在确认之前进行客户端验证的简单方法。它利用了内置的ASP.NET验证javascript。

<script type="text/javascript">
    function validateAndConfirm() {
        Page_ClientValidate("GroupName");  //'GroupName' is the ValidationGroup
        if (Page_IsValid) {
            return confirm("Are you sure?");
        }
        return false;
    }
</script>

<asp:TextBox ID="IntegerTextBox" runat="server" Width="100px" MaxLength="6" />
<asp:RequiredFieldValidator ID="reqIntegerTextBox" runat="server" ErrorMessage="Required"
    ValidationGroup="GroupName"  ControlToValidate="IntegerTextBox" />
<asp:RangeValidator ID="rangeTextBox" runat="server" ErrorMessage="Invalid"
    ValidationGroup="GroupName" Type="Integer" ControlToValidate="IntegerTextBox" />
<asp:Button ID="SubmitButton" runat="server" Text="Submit"  ValidationGroup="GroupName"
    OnClick="SubmitButton_OnClick" OnClientClick="return validateAndConfirm();" />

来源：Client Side Validation using ASP.Net Validator Controls from Javascript

Answer 10

试试这个：

function Confirm() {
    var confirm_value = document.createElement("INPUT");
    confirm_value.type = "hidden";
    confirm_value.name = "confirm_value";

        if (confirm("Your asking")) {
            confirm_value.value = "Yes";
            document.forms[0].appendChild(confirm_value);
        }
    else {
        confirm_value.value = "No";
        document.forms[0].appendChild(confirm_value);
    }
}

按钮调用功能：

<asp:Button ID="btnReprocessar" runat="server" Text="Reprocessar" Height="20px" OnClick="btnReprocessar_Click" OnClientClick="Confirm()"/>

在班级.cs中调用方法：

        protected void btnReprocessar_Click(object sender, EventArgs e)
    {
        string confirmValue = Request.Form["confirm_value"];
        if (confirmValue == "Yes")
        {

        }
    }

Answer 11

我知道这是旧的，有很多答案，有些真的很复杂，可以快速和内联：

<asp:Button runat="server" ID="btnUserDelete" Text="Delete" CssClass="GreenLightButton" OnClick="BtnUserDelete_Click" OnClientClick="return confirm('Are you sure you want to delete this user?');" meta:resourcekey="BtnUserDeleteResource1" />

确认回发OnClientClick按钮ASP.NET

11 个答案: