自定义控件设计:通过gridview传递参数

本文介绍了一个自定义控件GetIDAndName的设计,该控件用于从GridView中获取ID和NAME。控件包含TextBox和Button,通过Button点击事件触发对话框打开,并传递URL、窗口宽高参数。在GridView中绑定了数据源,实现了排序和分页功能,当用户点击按钮时,会调用JavaScript函数传递选定的ID和NAME。

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一.设计从gridview获取ID和NAME

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;

namespace WebControlLibrary
{
    [DefaultProperty("Text")]
    [ToolboxData("<{0}:GetIDAndName runat=server></{0}:GetIDAndName>")]
    public class GetIDAndName : CompositeControl  //WebControl //, IPostBackEventHandler, IPostBackDataHandler
    {
        [Bindable(true)]
        [Category("Appearance")]
        [DefaultValue("http://blog.youkuaiyun.com/zhanghefu/")]
        [Localizable(true)]
        [Description("The address of URL to open by the Button.")]

        public string URL
        {
            get
            {
                String s = (String)ViewState["URL"];
                return ((s == null) ? String.Empty : s);
            }
            set
            {
                ViewState["URL"] = value;
            }
        }

        [Bindable(true)]
        [Category("Appearance")]
        [DefaultValue("0")]
        [Localizable(true)]
        [Description("To set the WindowWidth of URL which is  opened by the Button.")]

        public int WindowWidth
        {
            get
            {
                object o = ViewState["WindowWidth"];
                if (o != null)
                {
                    return int.Parse(ViewState["WindowWidth"].ToString());
                }
                else
                {
                    return 0;
                }
            }
            set
            {
                ViewState["WindowWidth"] = value;
            }
        }

        [Bindable(true)]
        [Category("Appearance")]
        [DefaultValue("0")]
        [Localizable(true)]
        [Description("To set the WindowHeight of URL which is  opened by the Button.")]

        public int WindowHeight
        {
            get
            {
                object o = ViewState["WindowHeight"];
                if (o != null)
                {
                    return int.Parse(ViewState["WindowHeight"].ToString());
                }
                else
                {
                    return 0;
                }
            }
            set
            {
                ViewState["WindowHeight"] = value;
            }
        }

        public TextBox TextBox;
        public TextBox TextBox2;
        //public HiddenField HiddenField;
        public Button Button;

 

        protected override void CreateChildControls()
        {
            TextBox = new TextBox();
            TextBox2 = new TextBox();
            //HiddenField = new HiddenField();
            Button = new Button();

            TextBox.ID = "txtName";
            this.Controls.Add(TextBox);
            TextBox2.ID = "txtID";
            this.Controls.Add(TextBox2);
            //HiddenField.ID = "hfID";
            //HiddenField.Visible = true;
            //this.Controls.Add(HiddenField);
            Button.ID = "btnChoose";
            Button.Text = "选择";
            Button.Click += new EventHandler(Button_Click);

            this.Controls.Add(Button);
        }

      
        public event GetNameAndIDEventHandler OpenDilog;
        protected void Button_Click(object sender, EventArgs e)
        {
            try
            {
                if (URL == "" || URL ==null)
                    {
                        string strRemind = "The URL is not null.please input your URL!";
                         this.Page.RegisterStartupScript(System.Guid.NewGuid().ToString(),"<script>window.alert('" + strRemind + "')</script>");
                    }
                    //else
                    //{
                    //    OpenDilog(this, new SuzsoftArgs(this.Page, URL, WindowWidth, WindowHeight));
                    //}
                if (OpenDilog != null)
                {
                    OpenDilog(this, new SuzsoftArgs(this.Page, URL, WindowWidth, WindowHeight));
                }
            }
            catch (Exception ex)
            {
                return;
            }
        }

        //定义委托
        public delegate void GetNameAndIDEventHandler(object send, SuzsoftArgs e);
        public class SuzsoftArgs : EventArgs
        {
            private string strUrl = "";
            public string StrUrl
            {
                get { return strUrl; }
                set { strUrl = value; }
            }
            private string strNmae = "";
            public string StrName
            {
                get { return strNmae; }
                set { strNmae = value; }
            }
            private string strID = "";
            public string StrID
            {
                get { return strID; }
                set { strID = value; }
            }

            private int intWidth;
            public int IntWidth
            {
                get
                {
                    return intWidth;
                }
                set
                {
                    if (this.intWidth != value)
                        this.intWidth = value;
                }
            }

            private int intHeight;
            public int IntHeight
            {
                get
                {
                    return intHeight;
                }
                set
                {
                    if (this.intHeight != value)
                        this.intHeight = value;
                }
            }

            public static string BaseUrl
            {
                get
                {
                    string strBaseUrl = "";
                    strBaseUrl += "http://" + HttpContext.Current.Request.Url.Host;
                    if (HttpContext.Current.Request.Url.Port.ToString() != "80")
                    {
                        strBaseUrl += ":" + HttpContext.Current.Request.Url.Port;
                    }
                    strBaseUrl += HttpContext.Current.Request.ApplicationPath;

                    return strBaseUrl + "/";
                }
            }
            public SuzsoftArgs(System.Web.UI.Page pageCurrent, string strUrl, int intWidth, int intHeight)
            {
                string strScript = "";
                strScript += "var strFeatures = 'width:" + intWidth.ToString() + "px;height:" + intHeight.ToString() + "px';";
                strScript += "var strName ='__WIN';";
              

                if (strUrl.Substring(0, 1) == "/")
                {
                    strUrl = strUrl.Substring(1, strUrl.Length - 1);
                }
                strUrl = BaseUrl + strUrl;
                strScript += "window.open(/"" + strUrl + "/",strName,strFeatures);";
                               pageCurrent.ClientScript.RegisterStartupScript(this.GetType(), System.Guid.NewGuid().ToString(),
                                                               "<script language='javascript'>" + strScript + "</script>");
            }
        }
    }
}
 ////呈现控件时初始数据
        //protected override void OnPreRender(EventArgs e)
        //{
        //    TextBox.Text = "";
        //    TextBox2.ID = "";
        //    //HiddenField.Value = "";
        //    //Button.Click += new EventHandler(Button_Click);
        //}

二.GridView.aspx.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridView.aspx.cs" Inherits="GridView" %>

<%@ Register Assembly="Suzsoft.Web" Namespace="Suzsoft.Web.UI.WebControls" TagPrefix="asp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <table>
                <tr>
                    <td style="width: 514px">
                        <asp:SGridView ID="gvwSearch" runat="server" AllowCascade="True" AllowPaging="True"
                            AllowScrollBars="False" AllowSorting="True" ArrowColor="Gray" AutoGenerateColumns="False"
                            BorderCollapse="True" DarkshadowColor="White" DataSourceID="SqlDataSource2" DivBorderColor=""
                            DivBorderStyle="NotSet" DivBorderWidth="" DownImageURL="" ExtendedPagerStyle="Common"
                            ExtendedStyle="NotSet" FaceColor="White" GridLines="Horizontal" HighlightColor="LightGray"
                            OnSorting="gvwSearch_Sorting" ScrollBarsCss="" ShadowColor="LightGray" ShowActionToolBar="False"
                            SubGridViewTemplateID="" ThreeDlightColor="White" TrackColor="White" UpImageURL=""
                            UseStyleForSubGrid="False" Width="100%" XScrollBar="auto" YScrollBar="auto" DataKeyNames="id"
                            OnRowDataBound="gvwSearch_RowDataBound" OnPageIndexChanging="gvwSearch_PageIndexChanging">
                            <Columns>
                                <%--    sp:BoundField DataField="id" HeaderText="id" ReadOnly="True" SortExpression="id" />
                                --%>
                                <asp:TemplateField HeaderText="ID">
                                    <ItemTemplate>
                                        <asp:Label runat="server"  ID="labID" Text='<%# DataBinder.Eval(Container, "DataItem.id")%>'></asp:Label>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="姓名" ControlStyle-CssClass="grilviewLink" SortExpression="first_name">
                                    <ItemTemplate>
                                        <asp:LinkButton ID="btnReturn" runat="server"  Text='<%# DataBinder.Eval(Container, "DataItem.last_name").ToString() + " " + DataBinder.Eval(Container, "DataItem.first_name").ToString()%>'> </asp:LinkButton>
                                                  
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:BoundField DataField="title" HeaderText="title" SortExpression="title" />
                                <asp:BoundField DataField="assigned_user_id" HeaderText="assigned_user_id" SortExpression="assigned_user_id" />
                            </Columns>
                            <PagerSettings Position="TopAndBottom" />
                            <HeaderStyle Wrap="True" />
                        </asp:SGridView>
                        <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:CRMConnectionString %>"
                            SelectCommand="SELECT [id], [first_name], [last_name], [title], [assigned_user_id] FROM [contacts]">
                        </asp:SqlDataSource>
                        &nbsp;&nbsp;
                    </td>
                </tr>
                <tr>
                    <td style="width: 514px">
                        &nbsp;
                    </td>
                </tr>
            </table>

            <script language="javascript" type="text/javascript">
                   //关闭窗口
                  function OnCancel()
                  {
                    window.returnValue = null;
                    window.close();
                  }
                  //返回用户名字
                  function onReturnFirstName(id,FirstName)
                  {
                     window.returnValue = id + "^" + FirstName;
                     window.close();
                  }
            </script>

        </div>
    </form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;

public partial class GridView : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    #region  排序
    /// <summary>
    /// 排序
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    /// Author:kate.zhang Date:2007.1.10
    /// Modifier:
    /// </remarks>
    protected void gvwSearch_Sorting(object sender, GridViewSortEventArgs e)
    {
        DataTable dtContacts = gvwSearch.DataSource as DataTable;
        if (dtContacts != null)
        {
            DataView dvContacts = new DataView(dtContacts);
            dvContacts.Sort = e.SortExpression + " " + ConvertSortDirectionToSql(e.SortDirection);
            gvwSearch.DataSource = dvContacts;
            gvwSearch.DataBind();
        }
    }
    #endregion

    #region  分页
    /// <summary>
    /// 分页
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    /// Author:kate.zhang Date:2007.1.10
    /// Modifier:
    /// </remarks>
    protected void gvwSearch_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        gvwSearch.PageIndex = e.NewPageIndex;
        gvwSearch.DataBind();
    }
    #endregion

    #region 改变排序方向
    /// <summary>
    /// 改变排序方向
    /// </summary>
    /// <param name="sortDireciton">排序方向</param>
    /// <returns>改变后的排序方向</returns>
    /// <remarks>
    /// Author:kate.zhang Date:2007.1.10
    /// </remarks>
    private string ConvertSortDirectionToSql(SortDirection sortDireciton)
    {
        string strSortDirection = String.Empty;
        switch (sortDireciton)
        {
        case SortDirection.Ascending:
        strSortDirection = "ASC";
        break;
        case SortDirection.Descending:
        strSortDirection = "DESC";
        break;
        }
        return strSortDirection;
    }
    #endregion

    #region  初始化gridview
    /// <summary>
    /// 初始化grilview
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    /// <remarks>
    /// Author:kate.zhang Date:2007.1.10
    /// Modifier:
    /// </remarks>
    protected void gvwSearch_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                LinkButton objBtn = e.Row.Cells[0].FindControl("btnReturn") as LinkButton;
                Label objID = e.Row.Cells[0].FindControl("labID") as Label;
                objBtn.Attributes.Add("onclick", "onReturnFirstName('" + objBtn.Text.Split(' ')[0] + "','"+objID.Text+"')");
            }
            else
            {
                UIHelper.Alert(this.Page, "信息传输发生异常,请检查!");
            }
        }
    }
    #endregion
}

 

三.测试网页Default.aspx.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<%@ Register Assembly="WebControlLibrary" Namespace="WebControlLibrary" TagPrefix="cc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>

    <script type="text/javascript">
     function OpenSearchDialog(strReqPathId,strID,strName)
     {
           var strFeatures = "dialogWidth=590px;dialogHeight=520px;center=yes;help=no;status=no";
        var strReturnMessage=window.showModalDialog(strReqPathId,"",strFeatures);    
     if(strReturnMessage==null || strReturnMessage=="")
     {
   //do nothing
        }
       else
    {
         var strValues = strReturnMessage.split('^');
      document.getElementById(strID).value = strValues[0];
      document.getElementById(strName).value = strValues[1];
    }   
     } 
     //btnChooseUser.Attributes.Add("onclick", "OpenSearchDialog('" + base.BaseUrl + "DialogFrame.aspx?URL=Modules/SearchUsers.aspx','"+txtAssignedUserName.ClientID+ "')");
     //btnPerson.Attributes.Add("onclick", "OpenPersonModalDialog('" + base.BaseUrl + "System/DialogFrame.aspx?URL=modules/PersonnelSelector.aspx?SelMode=" + strParam + "','" + txtPersonName.ClientID + "','" + hfPersonID.ClientID + "','" + hfWorkNo.ClientID + "')");
    </script>

</head>
<body>
    <form id="form1" runat="server">
        <div>
            &nbsp;&nbsp;
            <cc1:GetIDAndName ID="GetIDAndName1" runat="server" Style="z-index: 100; left: 0px;
                position: absolute; top: 0px" WindowHeight="300" WindowWidth="300" OnOpenDilog="GetIDAndName1_OpenDilog" URL="" />
        </div>
    </form>
</body>
</html>
<%--protected void gvwAlternateKey_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            LinkButton objBtn = e.Row.Cells[0].FindControl("btnReturn") as LinkButton;
            objBtn.Attributes.Add("onclick","onReturn('" + objBtn.Text + "')");

            HyperLink objHyp = e.Row.Cells[1].Controls[0] as HyperLink;
            objHyp.Attributes.Add("onclick", "onReturn('" + objBtn.Text + "')");
        }
    }--%>
<%-- <script language="javascript" type="text/javascript">
    function onReturn(alternateKey)
    {
        window.returnValue = alternateKey;
        window.close();
    }
    </script>--%>
<%--<asp:gridview width="100%" id="gvwAlternateKey" runat="server" autogeneratecolumns="False"
    datasourceid="odsAlternateKey" onrowdatabound="gvwAlternateKey_RowDataBound">
                                <Columns>
                                    <asp:TemplateField HeaderText="AlternateKey">
                                        <ItemTemplate>
                                            <asp:LinkButton runat="server" ID="btnReturn" Text='<%#Eval("PRODUCTCATEGORYALTERNATEKEY") %>' />
                                        </ItemTemplate>
                                    </asp:TemplateField>
                                    <asp:HyperLinkField DataTextField="PRODUCTCATEGORYALTERNATEKEY" NavigateUrl="#" HeaderText="AlternateKey" />
                                </Columns>
                            </asp:gridview>--%>
using System;
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;

public partial class _Default : System.Web.UI.Page
{
  
    protected void GetIDAndName1_OpenDilog(object send, WebControlLibrary.GetIDAndName.SuzsoftArgs e)
    {
        e.IntHeight = 300;
        e.IntWidth = 300;
        GetIDAndName1.Attributes.Add("onclick", "OpenSearchDialog('" + "GridView.aspx" + "','"+GetIDAndName1.TextBox2.ClientID+"','"+GetIDAndName1.TextBox.ClientID+"')");
 
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        GetIDAndName1.URL = "GridView.aspx";
    }
}

 

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