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用戶控件開發(fā)：

 昵稱10504424 2014-02-24

 

 

弦斷有誰聽
 

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用戶控件開發(fā)：

 

 

 
功能:
 
1、判斷用戶是否自動(dòng)登錄
 


有了html5,就可以在很多地方用localStorage取代cookies，sessionStorage取代Session
 
2、實(shí)現(xiàn)視頻搜索
 
首先為TextBox控件擴(kuò)展一個(gè)AutoCompleteExtender控件，實(shí)現(xiàn)輸入字符，自動(dòng)顯示相關(guān)視頻。
 
讀者需要了解AutoCompleteExtender控件的使用方法；此實(shí)例后臺(tái)WebService方法如下
 


數(shù)據(jù)庫(kù)表中有videoTitle字段，通過調(diào)用存儲(chǔ)過程selectVideoTitle
 
create proc [dbo].[selectVideoTitle]
@videoTitle nvarchar(20)
as
select * from T_videoInfo where videoTitle like '%'+@videoTitle+'%' and aduiting=0 order by clickCount desc
 
獲得視頻名稱列表，然后傳給strArray；
 
為TextBox控件添加blur事件，發(fā)生此事件時(shí)，會(huì)把TextBox控件的值傳給selectVideoInfo.ashx文件，此文件負(fù)責(zé)返回視頻Id,通過參數(shù)Id傳給videoShow.asox；然后跳轉(zhuǎn)到視頻列表展示頁(yè)面videoShow.aspx
 


selectVideoInfo如下：
 


也是通過調(diào)研存儲(chǔ)過程。SqlHelp等一些公共方法在代碼中
 
3.登錄，注冊(cè)上傳視頻頁(yè)面的打開
 


當(dāng)希望鏈接被蜘蛛爬到，又不希望通過鏈接形式打開；可以使用return false語句
 
下面javaScript用來打開注冊(cè)頁(yè)面：
 


大家可以去查一下window.showModalDialog()和window.open()的區(qū)別等。
 
代碼
 


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.IO;
using System.Diagnostics;


namespace 在線視頻.CommonClass
{
    public class SqlHelp
    {
        static string connstr = ConfigurationManager.ConnectionStrings["conVedioStr"].ConnectionString;
        public static DataTable ExecuteDataTable(string str, params SqlParameter[] parameters)
        {
            using (SqlConnection conn = new SqlConnection(connstr))
            {
                using (SqlCommand com = conn.CreateCommand())
                {
                    com.CommandText = str;
                    com.Parameters.AddRange(parameters);
                    SqlDataAdapter adapter = new SqlDataAdapter(com);
                    DataTable table = new DataTable();
                    adapter.Fill(table);
                    return table;
                }
            }
        }
        public static DataTable ExecuteDataTablePro(string procName, params SqlParameter[] parameters)
        {
            using (SqlConnection conn = new SqlConnection(connstr))
            {
                using (SqlCommand com = conn.CreateCommand())
                {
                    com.CommandType = CommandType.StoredProcedure;
                    com.CommandText = procName;
                    com.Parameters.AddRange(parameters);
                    SqlDataAdapter adapter = new SqlDataAdapter(com);
                    DataTable table = new DataTable();
                    adapter.Fill(table);
                    return table;
                }
            }
        }
        public static int  ExecuteNonQuery(string str, params SqlParameter[] parameters)
        {
            using (SqlConnection conn = new SqlConnection(connstr))
            {
                conn.Open();
                using (SqlCommand com = conn.CreateCommand())
                {
                    com.CommandText = str;
                    com.Parameters.AddRange(parameters);
                   return com.ExecuteNonQuery();
                }
            }

        }
        public static int ExecuteNonQueryPro(string procName, params SqlParameter[] parameters)
        {
            using (SqlConnection con = new SqlConnection(connstr))
            {
                con.Open();
                using(SqlCommand com=con.CreateCommand())
                {
                    com.CommandType = CommandType.StoredProcedure;
                    com.CommandText = procName;
                    com.Parameters.AddRange(parameters);
                    return com.ExecuteNonQuery();
                }
            }
        }
        public static object ExecuteScalar(string str, params SqlParameter[] parameters)
        {
            using (SqlConnection conn = new SqlConnection(connstr))
            {
                conn.Open();
                using (SqlCommand com = conn.CreateCommand())
                {
                    com.CommandText = str;
                    com.Parameters.AddRange(parameters);
                    return com.ExecuteScalar();
                }

            }

        }
        public static object ExecuteScalarPro(string procName, params SqlParameter[] parameters)
        {
            using (SqlConnection conn = new SqlConnection(connstr))
            {
                conn.Open();
                using (SqlCommand com = conn.CreateCommand())
                {
                    com.CommandType = CommandType.StoredProcedure;
                    com.CommandText = procName;
                    com.Parameters.AddRange(parameters);
                    return com.ExecuteScalar();
                }

            }

        }
        public static SqlDataReader ExecuteReader(string str, params SqlParameter[] parameters)
        {
            using (SqlConnection conn = new SqlConnection(connstr))
            {
                conn.Open();
                using (SqlCommand com = conn.CreateCommand())
                {
                    com.CommandText = str;
                    com.Connection = conn;
                    com.Parameters.AddRange(parameters);
                    SqlDataReader reader = com.ExecuteReader();
                    return reader;
                }
               
            }

        }
        public static object FromDbValue(object value)
        {
            if (value == DBNull.Value)
            {
                return null;
            }
            else
            {
                return value;
            }
        }
        public static object ToDbValue(object value)
        {
            if (value == null)
            {
                return DBNull.Value;
            }
            else
            {
                return value;
            }
        }
        public static string AlertMsg(string msg)
        {
            string str = "<script type=\"text/javascript\" >alert('" + msg + "');</script>";
            return str;
        }
        public static  string getUniqueName(string tempPath)//tempPath上傳路徑
        {
            string strPre = tempPath.Substring(0, tempPath.LastIndexOf("."));

            string strLast = tempPath.Substring(tempPath.LastIndexOf(".") + 1);
            int i = 0;
            while (File.Exists(tempPath))
            {
                tempPath = strPre + "(" + i.ToString() + ")." + strLast;
                i++;
            }
            return tempPath;//返回唯一路徑

        }
        public static void catchImg(string videoFileName, string imgSavePath)//截取圖片
        {
            string fmpeg = @"F:\html\在線視頻\在線視頻\CommonFiles\ffmpeg.exe";
            string savePath = imgSavePath;
            string imgSize = ConfigurationManager.AppSettings["sizeofImg"];
            Process pass = new Process();
            pass.StartInfo.FileName = fmpeg;
            pass.StartInfo.Arguments = "  -i  " + videoFileName + "  -y  -f  image2   -ss 2 -vframes 1 -s " + imgSize + " " + savePath;
            pass.Start();
        }

    }
}


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<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="Header.ascx.cs" Inherits="在線視頻.Header" %>

<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="asp" %>

<link href="CSS/Header.css" rel="stylesheet" />

<script src="JS/jquery-1.7.1.js"></script>

    <script type="text/javascript">

        function showDialog(url,width,height) {

            var opensettings = "toolbar=no,menubar=no,status=no,scrollbars=no,location=no,resizable=no,center=yes";

            //var modalsettings = "center=yes;";

            var left, top;

            left = (screen.width - width) / 2;

            top = (screen.height - height) / 2;

            // opensettings = opensettings + ",left=" + left + ",top=" + top+",screenx="+left+",screeny="+top;

           var modalsettings = opensettings + ",dialogLeft=" + left + ",dialogTop=" + top;

            var d = new Object("dd");

            // window.open(url,tarert,opensettings);

            window.showModalDialog(url, d, modalsettings);

        }

        window.onload = function () {

            if (localStorage.userName != null && localStorage.userName != "")

            {

                document.getElementById("notLogin").style.display ="none";

                document.getElementById("spUerName").innerHTML = localStorage.userName;

            }

        }

        $(function () {

            $("#Header_txtSearch").blur(function () {

                $.get("Ajax/selectVideoInfo.ashx", { "videoTitle": $("#Header_txtSearch").val() }, function (data, status) {

                    if (status == 'success') {

                        window.location.href = "videoShow.aspx?Id=" + data;

                    }

                    else {

                        alert("視頻獲取失敗");

                    }

                });

            });

            $("#spUerName").mouseover(function () {

 

            });

   });

    </script>

<div class="divHead">

        <div class="divHeader">     

                <div class="divWeatherInfo" >

                    <span id="cityName">城市：</span> 

                    <span ><img id="weaPic" src="" alt="無法顯示天氣圖片" /></span>

                    <span id="temp">溫度：</span>

                    <span>| 空氣質(zhì)量：</span>

                    <span id="airQuality"></span>

                </div>

                <div class="divVideoSearch">

                    <asp:TextBox ID="txtSearch" runat="server" Height="29px" Width="200px" ></asp:TextBox>

                    <asp:AutoCompleteExtender ID="txtSearch_AutoCompleteExtender" runat="server" Enabled="True" ServicePath="~/WebService/videoSearch.asmx" TargetControlID="txtSearch" ServiceMethod="GetTextString" MinimumPrefixLength="1" >

                    </asp:AutoCompleteExtender>

                <asp:Button ID="btnSearch" runat="server" Text="搜索" BackColor="#FFECDF" BorderStyle="None" BorderWidth="0px" Font-Bold="True" Font-Italic="False" Font-Size="Large" ForeColor="#FF6E0C" Height="34px" OnClick="btnSearch_Click"  Width="70px"/>            

                </div>

                <div class="divUserInfo">

                    <span id="notLogin">

                    <a href="UserLogin.html" onclick="showDialog('UserLogin.html','200','150');return false;">登錄</a>

                    <a href="UserRegister.aspx" target="_blank">注冊(cè)</a></span>

                    <span id="spUerName" ><button id="userCan">退出</button></span>

                    <a href="videoUpLoad.aspx">上傳</a>

                </div>

        </div>

    </div>

 

 

 


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