--ModalPopup.cs
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Web.UI.WebControls;
using AjaxControlToolkit;
namespace ajaxcs
{
public class ModalPopup
{
public delegate void OnMsgBoxEventHandler(string ReturnValue);
public class MsgBox
{
private Button CancelButton;
private HiddenField HiddenField1;
private ModalPopupExtender ModalPopupExtender1;
private Panel MsgBoxPanel;
private Label MsgLabel;
private Button OkButton;
private Label TitleLabel;
public event OnMsgBoxEventHandler OnMsgBox;
public MsgBox()
{
this.HiddenField1 = new HiddenField();
this.ModalPopupExtender1 = new ModalPopupExtender();
}
public void Initial(Panel MsgBoxPanel, Label MsgLabel, Label TitleLabel, Button OkButton, Button CancelButton)
{
this.ModalPopupExtender1.ID = MsgBoxPanel.ID + "_ModalPopupExtender1";
this.HiddenField1.ID = MsgBoxPanel.ID + "_HiddenField1";
MsgBoxPanel.Parent.Controls.Add(this.HiddenField1);
MsgBoxPanel.Parent.Controls.Add(this.ModalPopupExtender1);
this.ModalPopupExtender1.TargetControlID = this.HiddenField1.ClientID;
this.ModalPopupExtender1.PopupControlID = MsgBoxPanel.ID;
this.MsgBoxPanel = MsgBoxPanel;
this.MsgLabel = MsgLabel;
this.TitleLabel = TitleLabel;
this.OkButton = OkButton;
this.CancelButton = CancelButton;
if (MsgBoxPanel.Page.Request.Form["__EVENTTARGET"] == this.HiddenField1.ClientID)
{
if (OnMsgBox != null)
OnMsgBox(MsgBoxPanel.Page.Request.Form[this.HiddenField1.ClientID]);
}
}
public void Show(string msg, [Optional, DefaultParameterValue("询问窗口")] string title, [Optional, DefaultParameterValue("")] string ModalBackgroundStyle, [Optional, DefaultParameterValue(100)] int x, [Optional, DefaultParameterValue(100)] int y)
{
string js = "<script>";
js = (((js + "function _onMsgBoxOK(v){") + "$get('" + this.HiddenField1.ClientID + "').value=v;") + this.MsgBoxPanel.Page.ClientScript.GetPostBackEventReference(this.MsgBoxPanel.Page.FindControl(this.ModalPopupExtender1.TargetControlID), "")) + "}" + "</script>";
this.MsgBoxPanel.Page.ClientScript.RegisterStartupScript(typeof(string), "showModalWindow_MsgBox", js);
this.ModalPopupExtender1.TargetControlID = this.HiddenField1.ClientID;
this.ModalPopupExtender1.PopupControlID = this.MsgBoxPanel.ID;
this.ModalPopupExtender1.BackgroundCssClass = ModalBackgroundStyle;
this.ModalPopupExtender1.DropShadow = true;
this.ModalPopupExtender1.OkControlID = this.OkButton.ID;
this.ModalPopupExtender1.OnOkScript = "_onMsgBoxOK(true)";
this.ModalPopupExtender1.OnCancelScript = "_onMsgBoxOK(false)";
this.ModalPopupExtender1.CancelControlID = this.CancelButton.ID;
this.ModalPopupExtender1.PopupDragHandleControlID = this.TitleLabel.ID;
this.ModalPopupExtender1.X = x;
this.ModalPopupExtender1.Y = y;
this.ModalPopupExtender1.OkControlID = this.OkButton.ID;
this.MsgLabel.Text = msg;
this.TitleLabel.Text = title;
this.ModalPopupExtender1.Show();
}
}
}
}
--调用后台代码
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using ajaxcs;
namespace ajaxcs
{
public partial class _Default : System.Web.UI.Page
{
ModalPopup.MsgBox MsgBox1 = new ModalPopup.MsgBox();
protected void Page_Load(object sender, EventArgs e)
{
MsgBox1.OnMsgBox += new ModalPopup.OnMsgBoxEventHandler(MsgBox1_OnMsgBox);
MsgBox1.Initial(this.Panel1, this.Label2, this.LBL_Title, this.btn_OK, this.btn_Cancel);
}
protected void Button1_Click(object sender, EventArgs e)
{
MsgBox1.Show(this.txb_body.Text, this.txb_title.Text, "modalbackground", 120, 100);
}
protected void MsgBox1_OnMsgBox(string ReturnValue)
{
Response.Write(ReturnValue);
}
}
}
--前台代码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>未命名页面</title>
<style type="text/css">
.modalbackground
{
border: 1px solid #2F4F4F;
color: white;
background-color: #000000;
font-weight: bold;
cursor: not-allowed;
filter: Alpha(opacity=40);
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
ModalPopup - MsgBox(用户输入的值可返回值给后端)<br />
<br />
范例：<br />
<br />
标题：<asp:TextBox ID="txb_title" runat="server">询问：</asp:TextBox><br />
内文：<asp:TextBox ID="txb_body" runat="server">您确定要这怎么做?</asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="ShowByPostback"
onclick="Button1_Click" /><br />
<br />
<asp:Panel ID="Panel1" runat="server" BackColor="WhiteSmoke" BorderColor="#0000C0"
BorderStyle="Solid" BorderWidth="1px" Height="168px" HorizontalAlign="Center"
Style="display: none" Width="296px">
<span style="color: #ffffff"></span>
<asp:Label ID="LBL_Title" runat="server" BackColor="Blue" Font-Bold="True" ForeColor="White"
Style="text-align: left" Text="标题" Width="100%"></asp:Label><br />
<br />
<asp:Label ID="Label2" runat="server" ForeColor="Black" Height="72px" Text="Label"
Width="100%"></asp:Label><br />
<table style=" 100%">
<tr>
<td align="right">
<asp:Button ID="btn_OK" runat="server" Text="确定" />
<asp:Button ID="btn_Cancel" runat="server" Text="取消" /></td>
</tr>
</table>
</asp:Panel>
</div>
</form>
</body>
</html>