asp.net在服务器端运行，是不能在服务器端弹出对话框的，但是c#可以通过在页面输出js代码实现弹出消息框的效果，这个c#类封装了常用的消息框弹出js代码，可以在服务器端调用，在客户端显示对话框。不但可以显示js的警告框，还可以显示模式窗口，非常方便。
using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace DotNet.Utilities
{
///
/// 页面常用方法包装
///
public class ShowMessageBox
{
#region 信息显示
///
/// 显示提示信息
///
///
public static void ShowMG(string message)
{
WriteScript("alert('" + message + "');");
}
///
/// 显示提示信息
///
/// 提示信息
public static void ShowMessage(string message)
{
ShowMessage("系统提示", 180, 120, message);
}
///
/// 显示提示信息
///
/// 提示信息
public static void ShowMessage_link(string message, string linkurl)
{
ShowMessage_link("系统提示", 180, 120, message, linkurl, 8000, -1);
}
///
/// 显示提示信息
///
///
///
///
/// 提示信息
private static void ShowMessage(string title, int width, int height, string message)
{
ShowMessage(title, width, height, message, 3000, -1);
}
///
/// 显示提示信息
///
///
///
///
///
///
///
private static void ShowMessage(string title, int width, int height, string message, int delayms, int leftSpace)
{
WriteScript(string.Format("popMessage({0},{1},'{2}','{3}',{4},{5});", width, height, title, message, delayms, leftSpace == -1 ? "null" : leftSpace.ToString()));
}
///
/// 显示提示信息
///
///
///
///
///
///
///
private static void ShowMessage_link(string title, int width, int height, string message, string linkurl, int delayms, int leftSpace)
{
WriteScript(string.Format("popMessage2({0},{1},'{2}','{3}','{4}',{5},{6});", width, height, title, message, linkurl, delayms, leftSpace == -1 ? "null" : leftSpace.ToString()));
}
#endregion
#region 显示异常信息
///
/// 显示异常信息
///
///
public static void ShowExceptionMessage(Exception ex)
{
ShowExceptionMessage(ex.Message);
}
///
/// 显示异常信息
///
///
public static void ShowExceptionMessage(string message)
{
WriteScript("alert('" + message + "');");
//PageHelper.ShowExceptionMessage("错误提示", 210, 125, message);
}
///
/// 显示异常信息
///
///
///
///
///
private static void ShowExceptionMessage(string title, int width, int height, string message)
{
WriteScript(string.Format("setTimeout(\"showAlert('{0}',{1},{2},'{3}')\",100);", title, width, height, message));
}
#endregion
#region 显示模态窗口
///
/// 返回把指定链接地址显示模态窗口的脚本
///
///
///
///
///
///
public static string GetShowModalWindowScript(string wid, string title, int width, int height, string url)
{
return string.Format("setTimeout(\"showModalWindow('{0}','{1}',{2},{3},'{4}')\",100);", wid, title, width, height, url);
}
///
/// 把指定链接地址显示模态窗口
///
/// 窗口ID
/// 标题
/// 宽度
/// 高度
/// 链接地址
public static void ShowModalWindow(string wid, string title, int width, int height, string url)
{
WriteScript(GetShowModalWindowScript(wid, title, width, height, url));
}
///
/// 为指定控件绑定前台脚本：显示模态窗口
///
///
///
///
///
///
///
///
///
public static void ShowCilentModalWindow(string wid, WebControl control, string eventName, string title, int width, int height, string url, bool isScriptEnd)
{
string script = isScriptEnd ? "return false;" : "";
control.Attributes[eventName] = string.Format("showModalWindow('{0}','{1}',{2},{3},'{4}');" + script, wid, title, width, height, url);
}
///
/// 为指定控件绑定前台脚本：显示模态窗口
///
///
///
///
///
///
///
///
///
public static void ShowCilentModalWindow(string wid, TableCell cell, string eventName, string title, int width, int height, string url, bool isScriptEnd)
{
string script = isScriptEnd ? "return false;" : "";
cell.Attributes[eventName] = string.Format("showModalWindow('{0}','{1}',{2},{3},'{4}');" + script, wid, title, width, height, url);
}
#endregion
#region 显示客户端确认窗口
///
/// 显示客户端确认窗口
///
///
///
///
public static void ShowCilentConfirm(WebControl control, string eventName, string message)
{
ShowCilentConfirm(control, eventName, "系统提示", 210, 125, message);
}
///
/// 显示客户端确认窗口
///
///
///
///
///
///
///
public static void ShowCilentConfirm(WebControl control, string eventName, string title, int width, int height, string message)
{
control.Attributes[eventName] = string.Format("return showConfirm('{0}',{1},{2},'{3}','{4}');", title, width, height, message, control.ClientID);
}
#endregion
///
/// 写javascript脚本
///
/// 脚本内容
public static void WriteScript(string script)
{
Page page = GetCurrentPage();
// NDGridViewScriptFirst(page.Form.Controls, page);
page.ClientScript.RegisterStartupScript(page.GetType(), System.Guid.NewGuid().ToString(), script, true);
}
///
/// 得到当前页对象实例
///
/// 
