pagehelp.cs

一个可以简单实现模块的拖曳、锁定、最大化、最小化控制的示例

using System;
using System.Collections;
using System.Data;
using System.Configuration;
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 System.Text;
using System.Text.RegularExpressions;

// ********************
// PageHelp页面辅助类
// Author：Linhuanhuan
// CreateTime：2007-6-15
// LastModify：2007-6-25
// ********************
//5_1_a_s_p_x.c_o_m

public class PageHelp {

	private static readonly string POSITIVE_INT = @"^\+?\d+$";				//正整数，可以有一个“+”号
	private static readonly string SIGN_INT = @"^[+-]?\d$";					//整数，可以有“+”、“-”号
	private static readonly string POSITIVE_DECIMAL = @"^[+]?\d+[.]?\d+$";	//正数值型
	private static readonly string SIGN_DECIMAL = @"^[+-]?\d+[.]?\d+$";		//数值型

	public PageHelp() {
		
	}

	/// <summary>
	/// 很多数据库中nvarchar都有长度限制，所以必须进行长度判断
	/// 判断字符串长度是否符合minLength到maxLength的要求
	/// </summary>
	/// <param name="text">输入的字符串</param>
	/// <param name="minLength">最小长度，大于等于0</param>
	/// <param name="maxLength">最大长度，一般为数据库内字段的长度</param>
	/// <returns>bool</returns>
	public static bool IsValidLengthText(string text, int minLength,int maxLength) {
		if (minLength < 0) {
			minLength = 0;
		}
		int curLength = text.Length;
		if (curLength >= minLength && curLength <= maxLength) {
			return true;
		} else {
			return false;
		}
	}

	/// <summary>
	/// 使用JS显示对话框
	/// </summary>
	/// <param name="page">page对象</param>
	/// <param name="strMessage">要显示的内容</param>
	public static void ShowMessage(System.Web.UI.Page page, string strMessage) {
		strMessage = strMessage.Replace("'", "\\\'");
		page.ClientScript.RegisterStartupScript(page.GetType(),"key1","<script>alert('"+strMessage+"');</script>");
	}

	/// <summary>
	/// 显示对话框并客户端转向
	/// </summary>
	/// <param name="page">page对象</param>
	/// <param name="strMessage">要显示的内容</param>
	/// <param name="url">需要转向的地址</param>
	public static void ShowAndRedirect(System.Web.UI.Page page, string strMessage, string url) {
		StringBuilder buffer = new StringBuilder();
		buffer.Append("<script language='javascript'>");

		if (!string.IsNullOrEmpty(strMessage)) {
			strMessage = strMessage.Replace("'", "\\\'");
			buffer.AppendFormat("alert('{0}');",strMessage);
		}

		buffer.AppendFormat("top.location.href='{0}'", url);
		buffer.Append("</script>");

		page.Response.Write(buffer.ToString());

	}

	/// <summary>
	/// 判断是否为正整数
	/// </summary>
	/// <param name="input">输入的字符串</param>
	/// <returns>bool型结果</returns>
	public static bool IsPositiveInt(string input) {
		Regex regex = new Regex(POSITIVE_INT);
		return regex.Match(input).Success;
	}

	/// <summary>
	/// 是否为整数
	/// </summary>
	/// <param name="input">输入的字符串</param>
	/// <returns>bool型结果</returns>
	public static bool IsSignInt(string input) {
		Regex regex = new Regex(SIGN_INT);
		return regex.Match(input).Success;
	}

	/// <summary>
	/// 是否为正数值型
	/// </summary>
	/// <param name="input">输入的字符串</param>
	/// <returns>bool型结果</returns>
	public static bool IsPositiveDecimal(string input) {
		Regex regex = new Regex(POSITIVE_DECIMAL);
		return regex.Match(input).Success;
	}

	/// <summary>
	/// 是否为数值型
	/// </summary>
	/// <param name="input">输入的字符串</param>
	/// <returns>bool型结果</returns>
	public static bool IsSignDecimal(string input) {
		Regex regex = new Regex(SIGN_DECIMAL);
		return regex.Match(input).Success;
	}

}