在ASP.NET Web表单中，我有两个按钮控件，我遇到了一个奇怪的场景。 我有btnOpenAddRoleModal和btn2。当我点击btnOpenAddRoleModal时，btnAddGlobalRoles变为可见，然后我点击执行某些功能的btnAddGlobalRoles。
现在，当我按F5刷新页面，并且因为ASP.NET在刷新时再次回发页面，它会像往常一样回复帖子。
我的问题是它运行btnOpenAddRoleModal的click事件处理程序而不是btnAddGlobalRoles，而我点击的最后一个按钮是btnAddGlobalRoles。
任何人都知道为什么会出现这种情况？
aspx页面
<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPages/MainTheme.Master" AutoEventWireup="true" CodeBehind="GlobalRoles.aspx.cs" Inherits="OPT.GlobalRoles" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
<header style="overflow: auto;">
<h1 class="zs-left">Global Roles</h1>
<div class="zs-right">
<asp:Button ID="btnOpenAddRoleModal" runat="server" Text="Add User" CssClass="zs-button zs-button-action" OnClick="btnOpenAddRoleModal_Click" OnClientClick="return IncreasePostBackControlValue();" />
</div>
</header>
<section class="page-2cols" style="position: relative;">
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<h2 class="zs-inner-title">Roles</h2>
<p class="zs-search-button">
<span class="zs-input-icon zs-icon-search">
<asp:Label ID="lblSearchText" runat="server" Text="Search Roles " Style="font-weight: 700"></asp:Label>
<asp:TextBox ID="txtSearchText" runat="server" CssClass="zs-input" placehoder="Enter key words to search" AutoPostBack="True" OnTextChanged="txtSearchText_TextChanged"></asp:TextBox>
</span>
</p>
<p>
<asp:Label ID="lblMessage" runat="server" Text=""></asp:Label></p>
<p>
<asp:Label ID="lblNoResultsMessage" runat="server" Text="No results found" Visible="false"></asp:Label></p>
<p>
<asp:GridView ID="gvGlobalRoles" runat="server" AutoGenerateColumns="False" OnRowDeleting="gvGlobalRoles_RowDeleting" CssClass="zs-data-table">
<Columns>
<asp:BoundField DataField="Serial" HeaderText="Sr. No." />
<asp:BoundField DataField="EmployeeName" HeaderText="Employee Name" />
<asp:BoundField DataField="RoleName" HeaderText="Role" />
<asp:TemplateField HeaderText="Action">
<ItemTemplate>
<span class="zs-icon zs-icon-delete"></span>
<asp:LinkButton Text="Delete" CommandName="Delete" runat="server" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</p>
<asp:Panel ID="pnlOverlay" CssClass="zs-overlay" Visible="false" runat="server"></asp:Panel>
<asp:Panel ID="pnlModal" Visible="false" CssClass="zs-modal" Style="display: inline-block; position: fixed; top: 50%; left: 50%; margin-top: 0px; margin-left: 0px; transform: translate(-50%, -50%);" runat="server">
<header>
<span><% =ModalTitle %></span>
<asp:LinkButton ID="lbCloseModal" runat="server" CssClass="zs-icon zs-icon-close zs-icon-large" OnClick="lbCloseModal_Click"></asp:LinkButton>
</header>
<section>
<p>
<asp:Label ID="lblModalMessage" runat="server" Text=""></asp:Label></p>
<asp:Panel ID="pnlDeleteListItem" runat="server" Visible="false">
You have selected to delete a role. Press OK to continue or Cancel to abort.
</asp:Panel>
<asp:Panel ID="pnlAddEditListItem" runat="server" Visible="false">
<p>
<asp:Label ID="lblEmployeeToAdd" runat="server" Text="Employee Email"></asp:Label><br />
<asp:TextBox ID="txtEmployeeToAdd" runat="server" CssClass="zs-input"></asp:TextBox>
</p>
<p>
<asp:Label ID="lblRoleToAdd" runat="server" Text="Role"></asp:Label><br />
<asp:DropDownList ID="ddlRoleToAdd" runat="server" CssClass="zs-input"></asp:DropDownList>
</p>
</asp:Panel>
</section>
<footer>
<asp:LinkButton ID="lbCancelModal" runat="server" OnClick="lbCancelModal_Click">Cancel</asp:LinkButton>
<asp:Button ID="btnAddGlobalRoles" runat="server" Text="Add" CssClass="zs-button zs-button-action" OnClick="btnAddGlobalRoles_Click" OnClientClick="return IncreasePostBackControlValue();" Visible="false" />
<asp:Button ID="btnDeleteGlobalRole" runat="server" CssClass="zs-button zs-button-action" Text="OK" OnClick="btnDeleteGlobalRole_Click" OnClientClick="return IncreasePostBackControlValue();" Visible="false" />
</footer>
</asp:Panel>
<asp:HiddenField ID="hfPostBackControl" runat="server" ClientIDMode="Static" />
<script>
//$(document).on("click", "button,input[type='submit'],input[type='button']", function () {
// $("#hfPostBackControl").val($("#hfPostBackControl").val() == "" ? 1 : Number($("#hfPostBackControl").val()) + 1);
//});
function IncreasePostBackControlValue() {
$("#hfPostBackControl").val($("#hfPostBackControl").val() == "" ? 1 : Number($("#hfPostBackControl").val()) + 1);
return true;
}
</script>
</ContentTemplate>
</asp:UpdatePanel>
</section>
</asp:Content>
aspx.cs页面
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using OPT.Models;
namespace OPT
{
public partial class GlobalRoles : System.Web.UI.Page
{
BAL bal = new BAL();
string message = "";
int messageStateID;
DataTable dtRoles;
DataTable dtGlobalEmployeeRoles;
GlobalRole globalRoleToDelete;
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
LoadRoleDropDown();
LoadGlobalRolesFromDatabase();
Session["sPostBackValue"] = 0;
}
Generic.HideControls(AllMessageControls);
}
protected void Page_PreInit(object sender, EventArgs e)
{
Session["CurrentPage"] = ePage.GlobalRoles;
}
protected void Page_LoadComplete(object sender, EventArgs e)
{
if (!Pages.ShowGlobalRoles())
{
Generic.RediretToMesagePage("Unauthorized user");
}
if (gvGlobalRoles.Rows.Count > 0)
{
gvGlobalRoles.HeaderRow.TableSection = TableRowSection.TableHeader;
lblNoResultsMessage.Visible = false;
}
else
{
lblNoResultsMessage.Visible = true;
}
}
void LoadGlobalRolesFromDatabase()
{
dtGlobalEmployeeRoles = bal.GetGlobalEmployeeRoles(txtSearchText.Text, ref message, ref messageStateID);
Session["GlobalEmployeeRoles"] = dtGlobalEmployeeRoles;
gvGlobalRoles.DataSource = Session["GlobalEmployeeRoles"] as DataTable;
gvGlobalRoles.DataBind();
}
void LoadRoleDropDown()
{
dtRoles = bal.GetGlobalRoles(ref message, ref messageStateID);
Generic.PopulateDataTableInDropDown(ddlRoleToAdd, dtRoles, "ID", "Name", "Please select");
}
protected void gvGlobalRoles_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int rowIndex = e.RowIndex;
globalRoleToDelete = new GlobalRole();
dtGlobalEmployeeRoles = Session["GlobalEmployeeRoles"] as DataTable;
globalRoleToDelete.ID = Convert.ToInt32(dtGlobalEmployeeRoles.Rows[rowIndex]["ID"].ToString());
Session["CurrentGlobalRole"] = globalRoleToDelete;
ModalTitle = "Delete Role";
Generic.ShowControls(modalDeleteControls);
}
protected void btnAddGlobalRoles_Click(object sender, EventArgs e)
{
if (Generic.IsRefresh(hfPostBackControl)) { return; }
Employee employee = new Employee();
Role role = new Role();
employee.EmailID = txtEmployeeToAdd.Text;
role.ID = Convert.ToInt32(ddlRoleToAdd.SelectedValue);
bal.CreateGlobalEmployeeRole(employee, role, ref message, ref messageStateID);
if (messageStateID == 1)
{
Generic.HideControls(modalAllControls);
Generic.ShowMessage(lblMessage, message, messageStateID);
}
else
{
ModalTitle = eModalTitle.EditProject;
Generic.ShowMessage(lblModalMessage, message, messageStateID);
}
LoadGlobalRolesFromDatabase();
}
protected void btnDeleteGlobalRole_Click(object sender, EventArgs e)
{
if (Generic.IsRefresh(hfPostBackControl)) { return; }
globalRoleToDelete = Session["CurrentGlobalRole"] as GlobalRole;
bal.DeleteGlobalEmployeeRole(globalRoleToDelete, ref message, ref messageStateID);
if (messageStateID == 1)
{
Generic.HideControls(modalAllControls);
Generic.ShowMessage(lblMessage, message, messageStateID);
}
else
{
ModalTitle = eModalTitle.EditProject;
Generic.ShowMessage(lblModalMessage, message, messageStateID);
}
LoadGlobalRolesFromDatabase();
Generic.HideControls(modalDeleteControls);
}
protected void lbCloseModal_Click(object sender, EventArgs e)
{
Generic.HideControls(modalAllControls);
}
protected void lbCancelModal_Click(object sender, EventArgs e)
{
Generic.HideControls(modalAllControls);
}
protected void btnOpenAddRoleModal_Click(object sender, EventArgs e)
{
if (Generic.IsRefresh(hfPostBackControl)) { return; }
ModalTitle = "Add Role";
Generic.ClearControlValuesInContainer(pnlAddEditListItem);
Generic.ShowControls(modalAddControls);
}
protected void txtSearchText_TextChanged(object sender, EventArgs e)
{
LoadGlobalRolesFromDatabase();
}
private string _ModalTitle;
public string ModalTitle
{
get { return _ModalTitle; }
set { _ModalTitle = value; }
}
protected List<Control> modalAllControls
{
get
{
List<Control> controls = new List<Control>();
controls.AddRange(modalGenericControls);
controls.AddRange(modalAddControls);
controls.AddRange(modalDeleteControls);
return controls;
}
}
protected List<Control> modalGenericControls
{
get
{
return new List<Control>{
pnlOverlay as Control,
pnlModal as Control
};
}
}
protected List<Control> modalDeleteControls
{
get
{
List<Control> controls = new List<Control>{
pnlDeleteListItem as Control,
btnDeleteGlobalRole as Control
};
controls.AddRange(this.modalGenericControls);
return controls;
}
}
protected List<Control> modalAddControls
{
get
{
List<Control> controls = new List<Control>{
pnlAddEditListItem as Control,
btnAddGlobalRoles as Control
};
controls.AddRange(this.modalGenericControls);
return controls;
}
}
protected List<Control> AllMessageControls
{
get
{
List<Control> messageControls = new List<Control>{
lblMessage as Control,
lblModalMessage as Control
};
return messageControls;
}
}
}
}
这里很少有支持方法
public static bool IsRefresh(HiddenField hfPostBackControl)
{
int sPostBackValue = HttpContext.Current.Session["sPostBackValue"] == null ? 0 : Convert.ToInt32(HttpContext.Current.Session["sPostBackValue"]);
int hPostBackValue = string.IsNullOrEmpty(hfPostBackControl.Value) ? 0 : Convert.ToInt32(hfPostBackControl.Value);
HttpContext.Current.Session["sPostBackValue"] = hPostBackValue;
return sPostBackValue == hPostBackValue;
}
/// <summary>
/// This method can be used for displaying pop ups after any action. One needs to pass the controls as parameter that need to shown on any event.
/// </summary>
/// <param name="controls">List of controls that need to be displyed as pop-up</param>
public static void ShowControls(List<Control> controls)
{
foreach (Control c in controls)
{
c.Visible = true;
}
}
/// <summary>
/// This method can be used for hiding pop ups being displayed. One needs to pass the controls as parameter that need to hidden on any event.
/// </summary>
/// <param name="controls">List of controls that need to be hidden</param>
public static void HideControls(List<Control> controls)
{
foreach (Control c in controls)
{
c.Visible = false;
}
}
public static void ShowMessage(Label lblMessage, string message, int messageStateID)
{
lblMessage.Text = message;
lblMessage.CssClass = messageStateID == 1 ? "zs-message zs-success" : "zs-message zs-error";
lblMessage.Visible = true;
}