Ajax运用之Webserver篇---全国车次时间查询服务

效果图：

前台布局Html：

<head runat="server">
    <title></title>
</head>
<body>
    
    <form id="form1" runat="server">
    <ajaxToolkit:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
    </ajaxToolkit:ToolkitScriptManager>
    <div>
       <table cellpadding="0" cellspacing="0" style="width:480px">
        <tr>
            <td style="width:18%;">起始站：</td>
            <td>
                <asp:TextBox ID="txtStart" runat="server"></asp:TextBox>
                <cc1:AutoCompleteExtender ID="AutoCompleteExtender1" runat="server" 
                    ServiceMethod="GetCompletionList" UseContextKey="True" 
                    TargetControlID="txtStart" MinimumPrefixLength="1">
                </cc1:AutoCompleteExtender>
                <br />
                <span style="font-size:6pt">可以输入拼音首字母</span>
            </td>
            <td style="width:18%;">终点站：</td>
            <td>
                <asp:TextBox ID="txtEnd" runat="server"></asp:TextBox>
                <cc1:AutoCompleteExtender 
                    ID="AutoCompleteExtender2" runat="server" ServiceMethod="GetCompletionList2" 
                    UseContextKey="True" TargetControlID="txtEnd" MinimumPrefixLength="1">
                </cc1:AutoCompleteExtender>
                <br />
                <span style="font-size:6pt">可以输入拼音首字母</span>
            </td>
        </tr>
        <tr>
            <td colspan="4">
                <asp:Button runat="server" ID="btnSearch" Text="查询" onclick="btnSearch_Click" />
            </td>
        </tr>
        <tr>
            <td colspan="4">
                <asp:Panel ID="pnlTrain" runat="server" Visible="false">
                    <asp:GridView ID="gdvTrain" runat="server" AutoGenerateColumns="False" EmptyDataText="没有直达车次">
                        <Columns>
                            <asp:BoundField DataField="TrainCode" HeaderText="车次" />
                            <asp:BoundField DataField="FirstStation" HeaderText="始发站" />
                            <asp:BoundField DataField="LastStation" HeaderText="终点站" />
                            <asp:BoundField DataField="StartTime" HeaderText="发车时间" />
                            <asp:BoundField DataField="ArriveTime" HeaderText="到站时间" />
                            <asp:BoundField DataField="UseDate" HeaderText="运行时间" />
                            <asp:BoundField DataField="KM" HeaderText="总里程" />
                        </Columns>
                    </asp:GridView>
                </asp:Panel>
            </td>
        </tr>
       </table> 
    </div>
    </form>
</body>

cs代码：

public static string[] stations;

    public static void GetStations()
    {
        if (stations != null)
            return;
        TrainTimeWebService tts = new TrainTimeWebService();
        DataSet ds = tts.getStationNameDataSet();
        stations = new string[ds.Tables[0].Rows.Count];
        int i = 0;
        foreach (DataRow row in ds.Tables[0].Rows)
        {
            string str = string.Format("{0}_{1}",row["station_shortcode"].ToString(),row["station_name"].ToString());
            stations[i]=str;
            i++;
            continue;
        }
    }
    
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            GetStations();
        }
    }

    [System.Web.Services.WebMethodAttribute(), System.Web.Script.Services.ScriptMethodAttribute()]
    public static string[] GetCompletionList(string prefixText, int count, string contextKey)
    {
        Regex regEx = new Regex(string.Format("{0}[\\w]*[_][\\w]*",prefixText),RegexOptions.IgnoreCase| RegexOptions.Multiline| RegexOptions.IgnorePatternWhitespace);
        Regex regEx1 = new Regex(string.Format("[\\w]*[_]{0}[\\w]*", prefixText), RegexOptions.IgnoreCase | RegexOptions.Multiline | RegexOptions.IgnorePatternWhitespace);

        var stas = from s in stations where (regEx.IsMatch(s) || regEx1.IsMatch(s)) select s;
        return stas.ToArray<string>();
    }

    [System.Web.Services.WebMethodAttribute(), System.Web.Script.Services.ScriptMethodAttribute()]
    public static string[] GetCompletionList2(string prefixText, int count, string contextKey)
    {
        Regex regEx = new Regex(string.Format("{0}[\\w]*[_][\\w]*", prefixText), RegexOptions.IgnoreCase | RegexOptions.Multiline | RegexOptions.IgnorePatternWhitespace);
        Regex regEx1 = new Regex(string.Format("[\\w]*[_]{0}[\\w]*", prefixText), RegexOptions.IgnoreCase | RegexOptions.Multiline | RegexOptions.IgnorePatternWhitespace);

        var stas = from s in stations where regEx.IsMatch(s) || regEx1.IsMatch(s) select s;
        return stas.ToArray<string>();
    }


    protected void btnSearch_Click(object sender, EventArgs e)
    {
        //获取起始站的文本
        string start = this.txtStart.Text.Substring(this.txtStart.Text.LastIndexOf("_")+1);
        //获取终点站的文本
        string end = this.txtEnd.Text.Substring(this.txtEnd.Text.LastIndexOf("_")+1);
        //实例化Web服务对象
        TrainTimeWebService tts = new TrainTimeWebService();
        //调用Web服务方法获取车次信息
        DataSet ds = tts.getStationAndTimeByStationName(start,end,"");
        this.pnlTrain.Visible = true;
        this.gdvTrain.DataSource = ds;//显示车次数据
        this.gdvTrain.DataBind();
    }

posted @ 2011-05-12 08:50  brainmao  阅读(741)  评论(2)  编辑  收藏  举报