ASP.NET中让页面对话框问题的代码

using System;
using System.Collections.Generic;
using System.Web;
using System.Text;
using System.Text.RegularExpressions;
using System.Web.UI;

 

namespace CommDBLib
{
public class JsHelper
{
/// <summary>
/// 弹出JavaScript小窗口
/// </summary>
/// <param name="strMessage">提示信息</param>
public static void Alert(string strMessage)
{


// p.ClientScript.RegisterStartupScript(p.GetType(), "", "alert('" + strMessage + "');");
//.RegisterClientScriptBlock(p.GetType(),"","alert('"+strMessage+"');",true);

System.Web.HttpContext.Current.Response.Write("<script language=\"javascript\">alert(\"" + strMessage + "\");</script>");
}

public static void AlertAndReload(string strMessage)
{
System.Web.HttpContext.Current.Response.Write("<script language=\"javascript\">alert(\"" + strMessage + "\");window.close();window.opener.location.reload();</script>");

}

public static void Reload(string Url)
{
System.Web.HttpContext.Current.Response.Redirect(Url);
// System.Web.HttpContext.Current.Response.Write("<script language=\"javascript\">window.close();window.opener.location.reload();</script>");

}

/// <summary>
/// 弹出JavaScript小窗口并重新定向到新的URL
/// </summary>
/// <param name="strMessage">提示信息</param>
/// <param name="strRedirectUrl">新URL</param>
public static void AlertAndRedirect(string strMessage, string strRedirectUrl)
{
System.Web.HttpContext.Current.Response.Write(String.Format("<script language=\"javascript\">alert(\"{0}\");window.location.replace(\"{1}\")</script>", strMessage, strRedirectUrl));
}

/// <summary>
/// 重新定向到新的页面
/// </summary>
/// <param name="strRedirectUrl">新页面的URL</param>
public static void Redirect(string strRedirectUrl)
{
System.Web.HttpContext.Current.Response.Write("<script language=\"javascript\">window.location=\"" + strRedirectUrl + "\";</script>");
}
/// <summary>
/// 根据对话框重定义到指定的页面中
/// </summary>
/// <param name="strMsg">信息对话框</param>
/// <param name="TrueUrl">如果选择[是]所指向的页面地质</param>
/// <param name="FalseUrl">如果选择[否]所指向的页面地质</param>
public static void ConfirmGoTo(string strMsg, string TrueUrl, string FalseUrl)
{
System.Web.HttpContext.Current.Response.Write("<SCRIPT language=\"javascript\">");
System.Web.HttpContext.Current.Response.Write("if (confirm(\"" + strMsg + "\"))");
System.Web.HttpContext.Current.Response.Write("{window.location='" + TrueUrl + "';}");
System.Web.HttpContext.Current.Response.Write("else");
System.Web.HttpContext.Current.Response.Write("{window.location='" + FalseUrl + "';}");
System.Web.HttpContext.Current.Response.Write("</SCRIPT>");
}
/// <summary>
/// 回到历史页面
/// </summary>
/// <param name="iValue">-1/1</param>
public static void GoHistory(int iValue)
{
System.Web.HttpContext.Current.Response.Write(String.Format("<script language=\"JavaScript\">history.go({0});</script>", iValue));
}

/// <summary>
/// 关闭当前窗体
/// </summary>
public static void CloseWindow()
{
System.Web.HttpContext.Current.Response.Write("<script language=\"JavaScript\">parent.opener=null;window.close();</script>");
System.Web.HttpContext.Current.Response.End();
}

/// <summary>
/// 刷新父窗口
/// </summary>
public static void RefreshParent(string url)
{
string js = @"<Script language='JavaScript'>
window.opener.location.href='" + url + "';window.close();</Script>";
System.Web.HttpContext.Current.Response.Write(js);
}
/// <summary>
/// 刷新当前窗口
/// </summary>
public static void Refresh()
{
string js = @"<Script language='JavaScript'>
document.location.reload();</Script>";
System.Web.HttpContext.Current.Response.Write(js);
}
/// <summary>
/// 返回值
/// </summary>
public static void returnValue(string bl)
{
System.Web.HttpContext.Current.Response.Write("<SCRIPT language=\"javascript\">");
System.Web.HttpContext.Current.Response.Write("window.returnValue='" + bl + "';");
System.Web.HttpContext.Current.Response.Write("</SCRIPT>");
}

#region 获取客户端IP地址
/// <summary>
/// 设置IP地址
/// </summary>
/// <param name="strIP"></param>
/// <returns></returns>
private static string SetIP(string strIP)
{
string[] str;
str = strIP.Split('.');
int j;
string tempIP = "", IP = "";
for (int i = str.Length - 1; i >= 0; i--)
{
tempIP = str[i];
if (str[i].Length < 3)
for (j = 1; j <= 3 - str[i].Length; j++)
tempIP = '0' + tempIP;
IP = tempIP + '.' + IP;
}
return IP.Substring(0, IP.Length - 1);
}

/// <summary>
/// 返回用户IP地址
/// </summary>
/// <returns></returns>
public static string GetIP()
{
return SetIP(System.Web.HttpContext.Current.Request.UserHostAddress);
}
#endregion

/// <summary>
/// 格式化字符串
/// </summary>
/// <param name="strText">原始字符串</param>
/// <returns>格式化后字符串</returns>
public static string FormatString(string strText)
{
strText = strText.Replace(" ", "&nbsp;&nbsp;");
strText = strText.Replace("<", "&lt;");
strText = strText.Replace(">", "&gt;");
strText = strText.Replace("\n", "<br>");

return strText;
}

/// <summary>
/// 根据框架结构能来设置页面的重定向到一个新的地址
/// </summary>
/// <param name="Level">框架层数</param>
/// <param name="strUrl">新网页地址</param>
public static void RedirectParent(int Level, string strUrl)
{
string strLevel = "window";
for (int i = 1; i <= Level; i++)
{
strLevel = strLevel + ".parent";
}
strLevel = strLevel + ".location='" + strUrl + "';";
System.Web.HttpContext.Current.Response.Write("<script language=\"javascript\">" + strLevel + "</script>");
}

public static void ShowModalDialog(string webUrl, string webWidth, string webHeight)
{
string features = "dialogWidth:" + webWidth + "; dialogHeight:" + webHeight + "; status:0; help:0";
System.Web.HttpContext.Current.Response.Write("<script language=\"javascript\">showModalDialog(\"" + webUrl + "\",\"window\",\"" + features + "\");</script>");
}

/// <summary>
/// 打开指定大小的新窗体
/// </summary>
/// <param name="url">地址</param>
/// <param name="width">宽</param>
/// <param name="heigth">高</param>
/// <param name="top">头位置</param>
/// <param name="left">左位置</param>
public static void OpenWebFormSize(string url, int width, int heigth, int top, int left)
{
string js = @"<Script language='JavaScript'>window.open('" + url + @"','','height=" + heigth + ",width=" + width + ",top=" + top + ",left=" + left + ",location=no,menubar=no,resizable=no,scrollbars=yes,status=no,titlebar=no,toolbar=no,directories=no');</Script>";
System.Web.HttpContext.Current.Response.Write(js);
}

#region 截取字符串操作函数
/// <summary>
/// 截取字符串，保留其HTML格式
/// </summary>
/// <param name="strText"></param>
/// <param name="len"></param>
/// <returns></returns>
public static string Cut(string strText, int len)
{

if (strText.Length > len)
{
return strText.Substring(0, len) + "…";
}
else
{
return strText;
}
}
public static string Cut(string strText, int len, int type)
{
if (type == 1)
{
if (strText.Length > len)
{
return strText.Substring(0, len) + "…";
}
else
{
return strText;
}
}
else
{

if (strText.Length > len)
{
return strText.Substring(0, len);
}
else
{
return strText;
}
}

}
#region 取得去掉html后的截取字符串
/// <summary>
/// 取得去掉html后的截取字符串
/// </summary>
/// <param name="str">输入串</param>
/// <param name="nums">截取数</param>
/// <returns>取得去掉html后的截取字符串</returns>
public static string GetCutStr(string str, int nums)
{
str = str.Trim();
return JsHelper.Cut(StringUtils.DropHtmlTag(str), nums, 1);
}
#endregion

/// <summary>
/// 返回日期 2009-09-01格式
/// </summary>
/// <param name="dt"></param>
/// <returns></returns>
public static string RetrunDt(DateTime dt) {
string str = dt.Year + "-" + dt.Month + "-" + dt.Day ;
return str;
}
private static string LoseHtml(string ContentStr)
{
string ClsTempLoseStr = "";
System.Text.RegularExpressions.Regex regEx = new System.Text.RegularExpressions.Regex("<\\/*[^<>]*>");
ClsTempLoseStr = regEx.Replace(ContentStr, "");
return ClsTempLoseStr;
}

/// <summary>
/// 截取字符串去掉其HTML字符
/// </summary>
/// <param name="inputString"></param>
/// <param name="len"></param>
/// <returns></returns>
public static string ToCut(string inputString, int len)
{
int tempLen = 0;
string tempString = "";
inputString = LoseHtml(inputString);
ASCIIEncoding ascii = new ASCIIEncoding();

byte[] s = ascii.GetBytes(inputString);
for (int i = 0; i < s.Length; i++)
{
if ((int)s[i] == 63)
{
tempLen += 2;
}
else
{
tempLen += 1;
}

try
{
tempString += inputString.Substring(i, 1);
}
catch
{
break;
}

if (tempLen > len)
break;
}
//如果截过则加上半个省略号
byte[] mybyte = System.Text.Encoding.Default.GetBytes(inputString);
if (mybyte.Length > len)
tempString = tempString.Substring(0, tempString.Length - 3 == 0 ? 1 : tempString.Length - 3) + "…";

return tempString;
}
#endregion

/// <summary>
/// 获得关键字
/// </summary>
/// <param name="strHeard">字符前字</param>
/// <returns>系统关键字</returns>
public static string GetPrimaryKey(string strHeard)
{
string strKey = DateTime.Now.ToString("yyMMddhhmmss");
strKey = strKey + DateTime.Now.Millisecond.ToString();
Random Ran = new Random();
strKey = strHeard + strKey + Ran.Next(1, 99999);
return strKey;
}

/// <summary>
/// 检查 Request.QueryString的值。
/// </summary>
/// <param name="QuseryStringKey">QueryString的值</param>
public static void AlertQueryString(string QuseryStringKey)
{
HttpContext r = HttpContext.Current;
if (r.Request.QueryString[QuseryStringKey] == null)
{
r.Response.Write("<script>alert('访问缺乏系统参数!');history.go(-1);</script>");
r.Response.End();
}
else
{
if (!IsNumeric(r.Request.QueryString[QuseryStringKey]))
{
r.Response.Write("<script>alert('造访被系统拒绝!');history.go(-1);</script>");
r.Response.End();
}
}
}
/// <summary>
/// 判断一个数据是不是数字
/// </summary>
/// <param name="inputData">字符串</param>
/// <returns>结果</returns>
public static bool IsNumeric(string inputData)
{
if (inputData != null && inputData.Trim() != "")
{
Regex _isNumber = new Regex(@"^\d+$");
Match m = _isNumber.Match(inputData);
return m.Success;
}
else
return false;
}
}
}

弹出一个对话框还可以用：
Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer>alert('添加成功！');</script>");