一． 显示消息对话框类
做项目时总免不了要弹出对话框，或提示用户，或做用户确认。像WinForm下的MessageBox一样很方便，但web下是不是也可以实现呢，答案是肯定的，我简单总结了一下并封装到类，在项目里像WinForm的MessageBox那样直接调用就可以，也可以把它编译成dll作为组件直接调用，并且它也没有弹出对话框时的大白屏现象：）。
/// <summary>
/// 显示消息提示对话框。
/// 李天平
/// 2005.10.1
/// </summary>
public class MessageBox
{
private MessageBox()
{
}
/// <summary>
/// 显示消息提示对话框
/// </summary>
/// <param name=page>当前页面指针，一般为this</param>
/// <param name=msg>提示信息</param>
public static void Show(System.Web.UI.Page page,string msg)
{
page.RegisterStartupScript(message,<script language='javascript' defer>alert('+msg.ToString()+');</script>);
}
/// <summary>
/// 控件点击消息确认提示框
/// </summary>
/// <param name=page>当前页面指针，一般为this</param>
/// <param name=msg>提示信息</param>
public static void ShowConfirm(System.Web.UI.WebControls.WebControl Control,string msg)
{
//Control.Attributes.Add(onClick,if (!window.confirm('+msg+')){return false;});
Control.Attributes.Add(onclick, return confirm(' + msg + ');) ;
}
/// <summary>
/// 显示消息提示对话框，并进行页面跳转
/// </summary>
/// <param name=page>当前页面指针，一般为this</param>
/// <param name=msg>提示信息</param>
/// <param name=url>跳转的目标URL</param>
public static void ShowAndRedirect(System.Web.UI.Page page,string msg,string url)
{
StringBuilder Builder=new StringBuilder();
Builder.Append(<script language='javascript' defer>);
Builder.AppendFormat(alert('{0}');,msg);
Builder.AppendFormat(top.location.href='{0}',url);
Builder.Append(</script>);
page.RegisterStartupScript(message,Builder.ToString());
}
/// <summary>
/// 输出自定义脚本信息
/// </summary>
/// <param name=page>当前页面指针，一般为this</param>
/// <param name=script>输出脚本</param>
public static void ResponseScript(System.Web.UI.Page page,string script)
{
page.RegisterStartupScript(message,<script language='javascript' defer>+script+</script>);
}
做项目，特别做MIS，更避免不了有用户输入数据需要做有效性验证，这里我总结封装了一个页面数据校验的工具类，用起来也是很方便。
/// <summary>
/// 页面数据校验类
/// 李天平
/// 2004.8
/// </summary>
public class PageValidate
{
private static Regex RegNumber = new Regex(^[0-9]+$);
private static Regex RegNumberSign = new Regex(^[+-]?[0-9]+$);
private static Regex RegDecimal = new Regex(^[0-9]+[.]?[0-9]+$);
private static Regex RegDecimalSign = new Regex(^[+-]?[0-9]+[.]?[0-9]+$); //等价于^[+-]?\d+[.]?\d+$
private static Regex RegEmail = new Regex(^[\\w-]+@[\\w-]+\\.(com|net|org|edu|mil|tv|biz|info)$);//w 英文字母或数字的字符串，和 [a-zA-Z0-9] 语法一样
private static Regex RegCHZN = new Regex([\u4e00-\u9fa5]);
public PageValidate()
{
}
#region 数字字符串检查
/// <summary>
/// 检查Request查询字符串的键值，是否是数字，最大长度限制
/// </summary>
/// <param name=req>Request</param>
/// <param name=inputKey>Request的键值</param>
/// <param name=maxLen>最大长度</param>
/// <returns>返回Request查询字符串</returns>
public static string FetchInputDigit(HttpRequest req, string inputKey, int maxLen)
{
string retVal = string.Empty;
if(inputKey != null && inputKey != string.Empty)
{
retVal = req.QueryString[inputKey];
if(null == retVal)
retVal = req.Form[inputKey];
if(null != retVal)
{
retVal = SqlText(retVal, maxLen);
if(!IsNumber(retVal))
retVal = string.Empty;
}
}
if(retVal == null)
retVal = string.Empty;
return retVal;
}
/// <summary>
/// 是否数字字符串
/// </summary>
/// <param name=inputData>输入字符串</param>
/// <returns></returns>
public static bool IsNumber(string inputData)
{
Match m = RegNumber.Match(inputData);
return m.Success;
}
/// <summary>
/// 是否数字字符串可带正负号
/// </summary>
/// <param name=inputData>输入字符串</param>
/// <returns></returns>
public static bool IsNumberSign(string inputData)
{
Match m = RegNumberSign.Match(inputData);
return m.Success;
}
/// <summary>
/// 是否是浮点数
/// </summary>
/// <param name=inputData>输入字符串</param>
/// <returns></returns>
public static bool IsDecimal(string inputData)
{
Match m = RegDecimal.Match(inputData);
return m.Success;
}
/// <summary>
/// 是否是浮点数可带正负号
/// </summary>
/// <param name=inputData>输入字符串</param>
/// <returns></returns>
public static bool IsDecimalSign(string inputData)
{
Match m = RegDecimalSign.Match(inputData);
return m.Success;
}
#endregion
#region 中文检测
/// <summary>
/// 检测是否有中文字符
/// </summary>
/// <param name=inputData></param>
/// <returns></returns>
public static bool IsHasCHZN(string inputData)
{
Match m = RegCHZN.Match(inputData);
return m.Success;
}
#endregion
#region 邮件地址
/// <summary>
/// 是否是浮点数可带正负号
/// </summary>
/// <param name=inputData>输入字符串</param>
/// <returns></returns>
public static bool IsEmail(string inputData)
{
Match m = RegEmail.Match(inputData);
return m.Success;
}
#endregion
#region 其他
/// <summary>
/// 检查字符串最大长度，返回指定长度的串
/// </summary>
/// <param name=sqlInput>输入字符串</param>
/// <param name=maxLength>最大长度</param>
/// <returns></returns>
public static string SqlText(string sqlInput, int maxLength)
{
if(sqlInput != null && sqlInput != string.Empty)
{
sqlInput = sqlInput.Trim();
if(sqlInput.Length > maxLength)//按最大长度截取字符串
sqlInput = sqlInput.Substring(0, maxLength);
}
return sqlInput;
}
/// <summary>
/// 字符串编码
/// </summary>
/// <param name=inputData></param>
/// <returns></returns>
public static string HtmlEncode(string inputData)
{
return HttpUtility.HtmlEncode(inputData);
}
/// <summary>
/// 设置Label显示Encode的字符串
/// </summary>
/// <param name=lbl></param>
/// <param name=txtInput></param>
public static void SetLabel(Label lbl, string txtInput)
{
lbl.Text = HtmlEncode(txtInput);
}
public static void SetLabel(Label lbl, object inputObj)
{
SetLabel(lbl, inputObj.ToString());
}
#endregion
}
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