带有asp.net列表视图删除的SweetAlert确认对话框

本文关键字：SweetAlert 确认 对话框 删除 视图 asp net 列表 带有 | 更新日期: 2023-09-27 18:20:40

请帮我理解一下。

我创建了一个ListView，显示来自SQL数据库的数据。我启用了插入、编辑和删除功能，一切正常。

我想要什么

我想使用SweetAlert提示用户确认是否要从ListView中删除条目。

我做了什么

首先 我尝试使用"内置"功能，在该功能中，我将OnClientClick="return confirm('are you sure')"添加到<asp:Button/>，调用对给定ListView项的删除。成功了！当我点击"是"时，它删除了，而"否"则没有。我不需要做任何事情，除了添加上面的内容但是这不是我想要的。我想显示更花哨的SweetAlert，问题就从这里开始了。

Second 我想我可以简单地创建SweetAlert脚本并从按钮调用它的函数名。然而，在这样做的时候，它确实打开了SweetAlert，但在我有机会点击"是"answers"否"之前，它已经删除了项目并关闭了框。

<script>
    function deletealert()
    {
        swal({
            title: "Are you sure?",
            text: "You will not be able to recover this imaginary   file!",
            type: "warning",
            showCancelButton: true,
            confirmButtonColor: "#DD6B55",
            confirmButtonText: "Yes, delete it!",
            cancelButtonText: "No, cancel plx!",
            closeOnConfirm: false,
            closeOnCancel: false                   
        },
        function (isConfirm) {
            if (isConfirm) {
                swal("Deleted!", "Your imaginary file has been deleted.", "success");
            } else {
                swal("Cancelled", "Your imaginary file is safe :)", "error");
            }
        });
    }
</script>

现在我知道上面没有任何功能，但我甚至没有机会转到是和否，它自己关闭了脚本。然后我发现我可以通过在删除<asp:Button />上设置CausesValidation=false来停止删除，但后来什么都没发生。

Third我认为我有一个突破，但我不知道如何完成它。我发现在ListView上，有一个名为ItemDeleting的事件。此事件在执行删除之前激发。我测试过了，它有效。

protected void ListView1_ItemDeleting(object sender, ListViewDeleteEventArgs e)
    {
        ClientScript.RegisterStartupScript(GetType(), "hwa", "deletealert();", true); //Calls the sweetalert
        e.Cancel = true;
       //e.Cancel = false;
    }

如果我使用e.Cancel = true;，则该项目不会被删除，操作也会被取消。如果我使用e.Cancel = false;，则该项目将被删除。因此，我认为我可能必须将该功能与上述jQuery结合起来。我不知道我是否可以将jQuery放入受保护的空隙中，并从那里使用它？

更新后包含haraman的建议解决方案这也是整个.aspx页面：

<%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="forum-front.aspx.cs" Inherits="initial.site.forum_front" EnableViewState="true" EnableEventValidation="true" %>
<asp:Content ID="Content1" ContentPlaceHolderID="MainContent" runat="server">
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css">
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<link rel="stylesheet" href="/resources/demos/style.css">
<script src="Content/sweetalert.min.js"></script>
<%--CSS Style Sheets--%>
  <link href="Content/Styles.css" rel="stylesheet" />
  <link href="Content/StylesPanel.css" rel="stylesheet" />
  <link href="Content/sweetalert.css" rel="stylesheet" />
  <%--Java Scripts--%>
    <script>
      function deletealert(ctl) {
        // STORE HREF ATTRIBUTE OF LINK CTL (THIS) BUTTON
        var defaultAction = $(ctl).prop("href");
        // CANCEL DEFAULT LINK BEHAVIOUR
        event.preventDefault();
        swal({
          title: "Are you sure?",
          text: "You will not be able to recover this imaginary   file!",
          type: "warning",
          showCancelButton: true,
          confirmButtonColor: "#DD6B55",
          confirmButtonText: "Yes, delete it!",
          cancelButtonText: "No, cancel plx!",
          closeOnConfirm: false,
          closeOnCancel: false
        }, function(isConfirm) {
          if (isConfirm) {
            swal("Deleted!", "Your imaginary file has been deleted.", "success");
            // RESUME THE DEFAULT LINK ACTION
            eval(defaultAction);
            return true;
          } else {
            swal("Cancelled", "Your imaginary file is safe :)", "error");
            return false;
          }
        });
      }
    </script>
    <asp:Panel ID="Panel1" runat="server" Height="1401px">
      <center>
        <table>
          <tr>
            <td>
              <asp:Button ID="TilForsiden" runat="server" OnClick="TilForsiden_Click" Text="Forsiden" CssClass="button" />
            </td>
            <td>
              <asp:Panel ID="Panel2" runat="server" CssClass="panel panel-default">
                <h1><asp:Label ID="ForumOverskrift" runat="server" CssClass=""></asp:Label></h1>
              </asp:Panel>
            </td>
          </tr>
        </table>
      </center>
      <center>
        <asp:ListView ID="ListView1" runat="server" DataSourceID="SqlDataSource1" InsertItemPosition="LastItem" DataKeyNames="OpslagsID" OnDataBound="SkrivOpslag_Click">
          <AlternatingItemTemplate>
            <tr style="">
              <td>
                <asp:LinkButton OnClientClick="return deletealert(this);" ID="LinkButton1" runat="server" CommandName="Delete" Text="Slet" CssClass="btn btn-default btn-xs" Visible='<%# (string)Eval("BrugerNavn") == "testuser" ? true : false %>' />
                <asp:Button ID="EditButton" runat="server" CommandName="Edit" Text="Rediger" CssClass="btn btn-default btn-xs" Visible='<%# (string)Eval("BrugerNavn") == "testuser" ? true : false %>' />
                <asp:Button ID="AnswerButton" runat="server" CommandName="Answer" Text="Svar" CssClass="btn btn-default btn-xs" OnClick="AnswerButton_Click" />
              </td>
              <td>
                <asp:Label ID="IndholdLabel" runat="server" Text='<%# Eval("Indhold") %>' />
              </td>
              <td>
                <asp:Label ID="BrugerNavnLabel" runat="server" Text='<%# Eval("BrugerNavn") %>' />
              </td>
              <td>
                <asp:Label ID="PostnummerLabel" runat="server" Text='<%# Eval("Postnummer") %>' />
              </td>
              <td>
                <asp:Label ID="EmneLabel" runat="server" Text='<%# Eval("Emne") %>' />
              </td>
            </tr>
            <tr>
              <td></td>
              <td>
                <asp:TextBox ID="AnswerTextBox" Placeholder="Svar..." runat="server" CssClass="form-control" ToolTip="Skriv dit emne her" Width="500px" Visible="false" TextMode="MultiLine" Rows="3" />
              </td>
            </tr>
          </AlternatingItemTemplate>
          <EditItemTemplate>
            <tr style="">
              <td>
                <asp:Button ID="UpdateButton" runat="server" CommandName="Update" Text="Update" CssClass="btn-info" />
                <asp:Button ID="CancelButton" runat="server" CommandName="Cancel" Text="Cancel" CssClass="btn-default" />
              </td>
              <td>
                <asp:TextBox ID="IndholdTextBox" runat="server" Text='<%# Bind("Indhold") %>' />
              </td>
              <td>
                <asp:TextBox ID="EmneTextBox" runat="server" Text='<%# Bind("Emne") %>' />
              </td>
            </tr>
          </EditItemTemplate>
          <EmptyDataTemplate>
            <table runat="server" style="">
              <tr>
                <td>No data was returned.</td>
              </tr>
            </table>
          </EmptyDataTemplate>
          <InsertItemTemplate>
            <table>
              <tr>
                <td>
                  <asp:TextBox ID="EmneTextBox" Placeholder="Emne..." runat="server" Text='<%# Bind("Emne") %>' CssClass="form-control" ToolTip="Skriv dit emne her" Width="500px" />
                </td>
              </tr>
              <tr>
                <td>
                  <asp:TextBox ID="IndholdTextBox" Placeholder="Skriv her..." runat="server" Text='<%# Bind("Indhold") %>' CssClass="form-control" ToolTip="Skriv dit indhold her" TextMode="MultiLine" Rows="8" Width="500px" />
                </td>
              </tr>
            </table>
            <tr style="">
              <td>
                <asp:Button ID="InsertButton" runat="server" CommandName="Insert" Text="Udgiv" CssClass="btn-info" />
                <asp:Button ID="CancelButton" runat="server" CommandName="Cancel" Text="Ryd" CssClass="btn-default" />
              </td>
              <td></td>
            </tr>
          </InsertItemTemplate>
          <ItemTemplate>
            <tr style="">
              <td>
                <asp:LinkButton OnClientClick="return deletealert(this);" ID="LinkButton2" runat="server" CommandName="Delete" Text="Slet" CssClass="btn btn-default btn-xs" Visible='<%# (string)Eval("BrugerNavn") == "testuser" ? true : false %>' />
                <asp:Button ID="EditButton" runat="server" CommandName="Edit" Text="Edit" CssClass="btn btn-default btn-xs" Visible='<%# (string)Eval("BrugerNavn") == "testuser" ? true : false %>' />
                <asp:Button ID="AnswerButton" runat="server" CommandName="Answer" Text="Svar" CssClass="btn btn-default btn-xs" OnClick="AnswerButton_Click" />
              </td>
              <td>
                <asp:Label ID="IndholdLabel" runat="server" Text='<%# Eval("Indhold") %>' />
              </td>
              <td>
                <asp:Label ID="BrugerNavnLabel" runat="server" Text='<%# Eval("BrugerNavn") %>' />
              </td>
              <td>
                <asp:Label ID="PostnummerLabel" runat="server" Text='<%# Eval("Postnummer") %>' />
              </td>
              <td>
                <asp:Label ID="EmneLabel" runat="server" Text='<%# Eval("Emne") %>' />
              </td>
            </tr>
            <tr>
              <td></td>
              <td>
                <asp:TextBox ID="AnswerTextBox" Placeholder="Svar..." runat="server" CssClass="form-control" ToolTip="Skriv dit emne her" Width="500px" Visible="false" TextMode="MultiLine" Rows="3" />
              </td>
            </tr>
          </ItemTemplate>
          <LayoutTemplate>
            <table runat="server">
              <tr runat="server">
                <td runat="server">
                  <table id="itemPlaceholderContainer" runat="server" border="0" style="" class="table table-striped">
                    <tr runat="server" style="">
                      <th runat="server"></th>
                      <th runat="server">Indhold</th>
                      <th runat="server">BrugerNavn</th>
                      <th runat="server">Postnummer</th>
                      <th runat="server">Emne</th>
                    </tr>
                    <tr id="itemPlaceholder" runat="server">
                    </tr>
                  </table>
                </td>
              </tr>
              <tr>
                <td>
                  <asp:Button ID="SkrivOpslag" runat="server" CommandName="SkrivOpslag" Text="Skriv Opslag" CssClass="btn btn-default btn-xs" OnClick="SkrivOpslag_Click" />
                </td>
              </tr>
              <tr runat="server">
                <td runat="server" style="">
                  <asp:DataPager ID="DataPager1" runat="server">
                    <Fields>
                      <asp:NextPreviousPagerField ButtonType="Button" ShowFirstPageButton="True" FirstPageText="Første Side" ShowLastPageButton="True" LastPageText="Sidste Side" PreviousPageText="Forrige" NextPageText="Næste" ButtonCssClass="btn btn-default" />
                    </Fields>
                  </asp:DataPager>
                </td>
              </tr>
            </table>
          </LayoutTemplate>
          <SelectedItemTemplate>
            <tr style="">
              <td>
                <asp:Button ID="DeleteButton" runat="server" CommandName="Delete" Text="Delete" CssClass="btn btn-default btn-xs" />
                <asp:Button ID="EditButton" runat="server" CommandName="Edit" Text="Edit" CssClass="btn btn-default btn-xs" />
              </td>
              <td>
                <asp:Label ID="IndholdLabel" runat="server" Text='<%# Eval("Indhold") %>' />
              </td>
              <td>
                <asp:Label ID="BrugerNavnLabel" runat="server" Text='<%# Eval("BrugerNavn") %>' />
              </td>
              <td>
                <asp:Label ID="PostnummerLabel" runat="server" Text='<%# Eval("Postnummer") %>' />
              </td>
              <td>
                <asp:Label ID="EmneLabel" runat="server" Text='<%# Eval("Emne") %>' />
              </td>
            </tr>
          </SelectedItemTemplate>
        </asp:ListView>
      </center>
      <asp:SqlDataSource ID="SqlDataSource1" runat="server" EnableViewState="True" ConnectionString="<%$ ConnectionStrings:foradbConnectionString %>" DeleteCommand="DELETE FROM [testOpslagstabel] WHERE [OpslagsID] = @OpslagsID" InsertCommand="INSERT INTO [testOpslagstabel] ([Indhold], [DatoTid], [Reference], [BrugerNavn], [Emne], [Postnummer]) VALUES (@Indhold, GetDate(), @Reference, 'testuser', @Emne, @Postnummer)"
      SelectCommand="SELECT * FROM [testOpslagstabel] WHERE ([Postnummer] = @Postnummer)" UpdateCommand="UPDATE [testOpslagstabel] SET [Indhold] = @Indhold, [DatoTid] = @DatoTid, [Reference] = @Reference, [BrugerNavn] = 'testuser', [Postnummer] = @Postnummer, [Emne] = @Emne WHERE [OpslagsID] = @OpslagsID"
      InsertCommandType="Text">
        <DeleteParameters>
          <asp:Parameter Name="OpslagsID" Type="Int32" />
        </DeleteParameters>
        <InsertParameters>
          <asp:Parameter Name="Indhold" Type="String" />
          <asp:Parameter Name="DatoTid" Type="DateTime" />
          <asp:Parameter Name="Reference" Type="Int32" />
          <asp:Parameter Name="BrugerNavn" Type="String" />
          <asp:QueryStringParameter Name="Postnummer" QueryStringField="Postnummer" Type="Int32" />
          <asp:Parameter Name="Emne" Type="String" />
        </InsertParameters>
        <SelectParameters>
          <asp:QueryStringParameter Name="Postnummer" QueryStringField="Postnummer" Type="Int32" />
        </SelectParameters>
        <UpdateParameters>
          <asp:Parameter Name="Indhold" Type="String" />
          <asp:Parameter Name="DatoTid" Type="DateTime" />
          <asp:Parameter Name="Reference" Type="Int32" />
          <asp:Parameter Name="BrugerNavn" Type="String" />
          <asp:QueryStringParameter Name="Postnummer" QueryStringField="Postnummer" Type="Int32" />
          <asp:Parameter Name="Emne" Type="String" />
          <asp:Parameter Name="OpslagsID" Type="Int32" />
        </UpdateParameters>
      </asp:SqlDataSource>
    </asp:Panel>
</asp:Content>

为了让一切都更清楚，我在aspx后面的代码中更新了完整的代码。此外，如果它能更好地理解，我正在尝试创建一个论坛

using System;
using System.Configuration;
using System.Data.SqlClient;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace initial.site
{        
    public partial class forum_front : System.Web.UI.Page
    {
        string qbynavn;
        object objbynavn;
        // Makes the SQL connection string
        String CS = ConfigurationManager.ConnectionStrings["FORADB"].ConnectionString;
        protected void Page_Load(object sender, EventArgs e)
        {    
            string qpostnr = Request.QueryString["Postnummer"];
            if (qpostnr != null)
            {
                try
                {
                    using (SqlConnection con = new SqlConnection(CS))
                    {
                        // specifies the command to check for zipcode
                        SqlCommand cmd = new SqlCommand("SELECT Bynavn FROM Postnummertabel WHERE Postnr = " + qpostnr, con);
                        // Opens the connection
                        con.Open();
                        objbynavn = cmd.ExecuteScalar();
                        qbynavn = objbynavn.ToString();
                        ForumOverskrift.Text = " Velkommen til " + qbynavn;
                    }
                }
                catch (Exception ex)
                {
                    Response.Write("Der opstod en fejl! " + ex.Message);
                }
            }
            else
            {
                ForumOverskrift.Text = " Velkommen!";
            }
         }
        public void AnswerButton_Click(object sender, EventArgs e)
        {
            // Tries to bind the sender to the right button.
            Button originator = sender as Button;
            // Checks if it has been found
            if (originator != null)
            {
                // Goes throug the control hierachy to find the right item.
                var parentItem = originator.Parent as ListViewItem;
                if (parentItem != null
                     && parentItem.ItemType == ListViewItemType.DataItem)
                {
                    // Binds the textbox and button to variables
                    var textBox = parentItem.FindControl("AnswerTextBox") as TextBox;
                    var btn = parentItem.FindControl("AnswerButton") as Button;
                    if (textBox != null)
                    {
                        // Changes the textbox to being visible and changes the buttons text.
                        if (textBox.Visible == false)
                        {
                            textBox.Visible = true;
                            btn.Text = "Fortryd";
                        }
                        // Changes the textbox to invisible and changes the buttons text.
                        else if (textBox.Visible == true)
                        {
                            textBox.Visible = false;
                            btn.Text = "Svar";
                        }
                    }
                }
            }
        }
        // Makes the Skriv Opslag field either visible or invisible
        protected void SkrivOpslag_Click(object sender, EventArgs e)
        {
            if (ListView1.InsertItem.Visible == true)
            {
                // Makes the Skriv Opslag field invisible
                ListView1.InsertItem.Visible = false;
                // Changes the buttons name to Skriv Opslag
                Button btn = (Button) ListView1.FindControl("SkrivOpslag");
                btn.Text = "Skriv Opslag";
            }
            else if (ListView1.InsertItem.Visible == false)
            {
                // Makes the Skriv Opslag field visible
                ListView1.InsertItem.Visible = true;
                // Changes the Buttons name to Skriv Opslag
                Button btn = (Button)ListView1.FindControl("SkrivOpslag");
                btn.Text = "Fortryd";
            }
        }
        protected void TilForsiden_Click(object serder, EventArgs e)
        {
            Response.Redirect("~/welcomepage.aspx");
        }
        protected void ListView1_ItemDeleting(object sender, ListViewDeleteEventArgs e)
        {
           ClientScript.RegisterStartupScript(GetType(), "hwa", "deletealert();", true);
           //e.Cancel = true;
            //Response.Write("<script>deletealert();</script>");
            //ScriptManager.RegisterClientScriptBlock(this, GetType(), "mykey", "deletealert();", true);
        }
    }
}

带有asp.net列表视图删除的SweetAlert确认对话框

首先，您必须明白，不能像当前在ItemDeleting事件中所做的那样，一次性混合服务器端代码、客户端代码和服务器代码。所有客户端代码只有在完成服务器端代码执行后页面PostBacks时才会激发。

现在，关于插件的使用。您从swal函数返回了什么吗？

让我们试着用你的第一个方法OnClientClick="return confirm('are you sure')"的老方法来做。修改为OnClientClick="return deletealert();"。现在在deletealert函数中的JavaScript return true/false中（关注大写的注释）

... YOUR OTHER CODE IN DELETEALERT
function (isConfirm) {
    if (isConfirm) {
        swal("Deleted!", "Your imaginary file has been deleted.", "success");
        //RETURN TRUE TO EXECUTE SERVER CODE
        return true;
    } else {
        swal("Cancelled", "Your imaginary file is safe :)", "error");
        //RETURN FALSE TO SKIP SERVER CODE
        return false;
    }
});
... YOUR OTHER CODE

更新：

CCD_ 17的工作与常规CCD_。它确实显示了一个模式窗口，但不会阻止用户发起的任何操作，如提交、链接单击。因此，解决方法是将链接的href存储在var中，显示SweetAlert，然后使用eval恢复该链接。

function deletealert(ctl, event) {
    // STORE HREF ATTRIBUTE OF LINK CTL (THIS) BUTTON
    var defaultAction = $(ctl).prop("href");
    // CANCEL DEFAULT LINK BEHAVIOUR
    event.preventDefault();
    swal({
        title: "Are you sure?",
        text: "You will not be able to recover this imaginary   file!",
        type: "warning",
        showCancelButton: true,
        confirmButtonColor: "#DD6B55",
        confirmButtonText: "Yes, delete it!",
        cancelButtonText: "No, cancel plx!",
        closeOnConfirm: false,
        closeOnCancel: false
    },
    function (isConfirm) {
        if (isConfirm) {
            swal({ title: "Deleted!", text: "Your imaginary file has been deleted.", type: "success", confirmButtonText: "OK!", closeOnConfirm: false },
            function () {
                // RESUME THE DEFAULT LINK ACTION
                window.location.href = defaultAction;
                return true;
            });
        } else {
            swal("Cancelled", "Your imaginary file is safe :)", "error");
            return false;
        }
    });
}

我用asp:LinkButton替换了asp:Button，只是为了方便处理preventDefault，然后恢复操作。

<asp:LinkButton OnClientClick="return deletealert(this, event);" ID="DeleteButton" runat="server" CommandName="Delete" Text="Slet" CssClass="btn btn-default btn-xs" Visible='<%# (string)Eval("BrugerNavn") == "testuser" ? true : false %>' />

只需要解决一个小故障，即当用户最终单击ConfirmButton时，会显示最终的success消息，但同时也会执行默认操作，从而生成postback更新为在最终success消息和FireFox更新后回发。

您需要在到达服务器之前进行提示；所以使用jQuery:点击删除按钮

$("#idofplaceholderwrappingtheitems").find("[id$='DeleteButton']").on("click", function(e) {
   //show confirmation here; 
});

在ItemDeleting中显示javascript太晚了。

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