【转贴】ListView使用技巧

【转贴】ListView使用技巧

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作者：方明

原贴地址：http://www.cnblogs.com/nuaalfm/archive/2008/09/03/1282468.html

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目录：

ListView控件学习系列1-了解ListView控件

ListView控件学习系列2-编辑ListView

ListView控件学习系列3-ListView选择，排序，分页

ListView使用技巧

源码下载

1、鼠标移到ListView某一行时改变该行的背景色方法
前端代码： 

<asp:ListView ID="ListView1" runat="server" 
            onitemdatabound="ListView1_ItemDataBound">
            <LayoutTemplate>
                <table id="Table1" runat="server" border="0" style="">
                    <tr runat="server" id="itemPlaceholder" />
                </table>
            </LayoutTemplate>
            <ItemTemplate>
                <tr runat="server" id="Tr">
                    <td>
                        <%#Eval("ID") %>
                    </td>
                    <td>
                        <%# Eval("name") %>
                    </td>
                    <td>
                        <%# Eval("age") %>
                    </td>
                </tr>
            </ItemTemplate>
        </asp:ListView>

后台代码： 

protected void ListView1_ItemDataBound(object sender, ListViewItemEventArgs e)
    {
        if (e.Item.ItemType==ListViewItemType.DataItem)
        {
            (e.Item.FindControl("Tr") as HtmlTableRow).Attributes.
                Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");
            (e.Item.FindControl("Tr") as HtmlTableRow).Attributes.
            Add("onmouseout", "this.style.backgroundColor=c");
        }
    }

 2、ListView和和下拉菜单DropDownList结合（其他控件其实也差不多）：
前端代码： 

<asp:ListView ID="ListView1" runat="server" OnItemDataBound="ListView1_ItemDataBound">
            <LayoutTemplate>
                <table id="Table1" runat="server" border="0" style="">
                    <tr runat="server" id="itemPlaceholder" />
                </table>
            </LayoutTemplate>
            <ItemTemplate>
                <tr runat="server" id="Tr">
                    <td>
                        <asp:Label ID="ID" runat="server" Text='<%#Eval("ID") %>'></asp:Label>
                    </td>
                    <td>
                        <%# Eval("name") %>
                    </td>
                    <td>
                        <%# Eval("age") %>
                    </td>
                    <td>
                        <asp:DropDownList ID="SexDropDownList" runat="server">
                        </asp:DropDownList>
                    </td>
                </tr>
            </ItemTemplate>
        </asp:ListView>

模拟数据提供代码： 

后台代码： 

protected void ListView1_ItemDataBound(object sender, ListViewItemEventArgs e)
    {
        DropDownList SexDropDownList = e.Item.FindControl("SexDropDownList") as DropDownList;
        int sex = da.Find(Convert.ToInt32((e.Item.FindControl("ID") as Label).Text)).Sex;
        ListItem listItem;
        if (sex == 0)
        {
            listItem = new ListItem("男", sex.ToString());
        }
        else
        {
            listItem = new ListItem("女", sex.ToString());
        }
        SexDropDownList.Items.Add(listItem);
        SexDropDownList.Enabled = false;
    }

3、ListView实现删除时弹出确认对话框：
前端代码 

<asp:ListView ID="ListView1" runat="server" OnItemDataBound="ListView1_ItemDataBound">
            <LayoutTemplate>
                <table id="Table1" runat="server" border="0" style="">
                    <tr runat="server" id="itemPlaceholder" />
                </table>
            </LayoutTemplate>
            <ItemTemplate>
                <tr runat="server" id="Tr">
                    <td>
                        <asp:Label ID="ID" runat="server" Text='<%#Eval("ID") %>'></asp:Label>
                    </td>
                    <td>
                        <%# Eval("name") %>
                    </td>
                    <td>
                        <%# Eval("age") %>
                    </td>
                    <td>
                        <asp:Button ID="Delete" runat="server" Text="Delete" />
                    </td>
                </tr>
            </ItemTemplate>
        </asp:ListView>

后台代码

protected void ListView1_ItemDataBound(object sender, ListViewItemEventArgs e)
    {
        if (e.Item.ItemType == ListViewItemType.DataItem)
        {
            (e.Item.FindControl("Delete") as Button).Attributes.Add
                ("onclick", "javascript:return confirm('你确认要删除：\"" 
                + (e.Item.FindControl("id") as Label).Text + "\"吗?')");

        }
    }

4、ListView实现自动编号

<asp:ListView ID="ListView1" runat="server" OnItemDataBound="ListView1_ItemDataBound">
            <LayoutTemplate>
                <table id="Table1" runat="server" border="0" style="">
                    <tr runat="server" id="itemPlaceholder" />
                </table>
            </LayoutTemplate>
            <ItemTemplate>
                <tr runat="server" id="Tr">
                    <td>
                        <asp:Label ID="Num" runat="server"></asp:Label>
                    </td>
                    <td>
                        <asp:Label ID="ID" runat="server" Text='<%#Eval("ID") %>'></asp:Label>
                    </td>
                    <td>
                        <%# Eval("name") %>
                    </td>
                    <td>
                        <%# Eval("age") %>
                    </td>
                    <td>
                        <asp:Button ID="Delete" runat="server" Text="Delete" />
                    </td>
                </tr>
            </ItemTemplate>
        </asp:ListView>

后台代码 

int Num = 1;
    protected void ListView1_ItemDataBound(object sender, ListViewItemEventArgs e)
    {
        if (e.Item.ItemType == ListViewItemType.DataItem)
        {
            (e.Item.FindControl("Num") as Label).Text = Num.ToString();
            Num++;
        }
    }

5、将ListView中的内容以Excel导出

前端代码：

<div>
     <asp:ListView ID="ListView1" runat="server">
        <ItemTemplate>
            <tr>
                <td id="Td1" runat="server" style="">
                    <asp:Label ID="idLabel" runat="server" Text='<%# Eval("name") %>' />
                    <br />
                </td>
                <td>
                    <asp:Label ID="xLabel" runat="server" Text='<%# Eval("Age") %>' />
                    <br />
                </td>
            </tr>
        </ItemTemplate>
        <LayoutTemplate>
            <table id="Table1" runat="server" border="0" style="">
                <tr runat="server" id="itemPlaceholder" />
                
            </table>
        </LayoutTemplate>
    </asp:ListView>
    </div><asp:Button ID="Button1" runat="server" Text="Button" 
            onclick="Button1_Click" />

 

后台代码

 

public partial class ListView技巧_Code13 : System.Web.UI.Page
{
    DataAccess da;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["da"] == null)
        {
            da = new DataAccess();
            Session["da"] = da;
        }
        else
        {
            da = Session["da"] as DataAccess;
        }
        if (!IsPostBack)
        {
            Bind();
        }
    }
    private void Bind()
    {
        ListView1.DataSource = da.List;
        ListView1.DataBind();
    }
    private void Export(string FileType, string FileName)
    {
        Response.Charset = "GB2312";
        Response.ContentEncoding = System.Text.Encoding.UTF7;
        Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
        Response.ContentType = FileType;
        this.EnableViewState = false;
        StringWriter tw = new StringWriter();
        HtmlTextWriter hw = new HtmlTextWriter(tw);
        ListView1.RenderControl(hw);
        Response.Write(tw.ToString());
        Response.End();
    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        Export("application/ms-excel", "employee.xls");

    }
}

6、高级分页

使用DataPager分页虽然简单但是对于大数据量时性能会成问题，因为这种分页仍然是一次性将数据载入到控件中的，暂时没找到使用DataPager好的解决方案，这里使用一个网上比较流行的开源的.net分页控件AspNetPager，下载地址为: http://www.webdiyer.com/

前端代码：  

 <%@ Register Assembly="AspNetPager" Namespace="Wuqi.Webdiyer" TagPrefix="webdiyer" %>

<asp:ListView ID="ListView1" runat="server">
        <LayoutTemplate>
            <table id="Table1" runat="server" border="0" style="">
                <tr runat="server" id="itemPlaceholder" />
            </table>
        </LayoutTemplate>
        <ItemTemplate>
            <tr>
                <td>
                    <%#Eval("ID") %>
                </td>
                <td>
                    <%# Eval("name") %>
                </td>
                <td>
                    <%# Eval("age") %>
                </td>
            </tr>
        </ItemTemplate>
    </asp:ListView>
    <webdiyer:AspNetPager ID="AspNetPager1" runat="server" UrlPaging="false" ShowPageIndexBox="Always"
        PageIndexBoxType="DropDownList" ShowCustomInfoSection="Left" PageIndexBoxStyle="width:19px"
        CustomInfoHTML="共%PageCount%页，%RecordCount%条记录，当前第%CurrentPageIndex%页，每页显示%PageSize%条"
        HorizontalAlign="Center" PageSize="2" FirstPageText="首页" LastPageText="末页" NextPageText="下一页"
        PrevPageText="前一页" TextAfterPageIndexBox="页" TextBeforePageIndexBox="转到第" EnableTheming="true"
        OnPageChanging="AspNetPager1_PageChanging">
    </webdiyer:AspNetPager>

 

后台代码：

 

public partial class ListView技巧_Code14 : System.Web.UI.Page
{
    DataAccess da;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["da"] == null)
        {
            da = new DataAccess();
            Session["da"] = da;
        }
        else
        {
            da = Session["da"] as DataAccess;
        }
        if (!IsPostBack)
        {
            Bind();
        }
    }
    private void Bind()
    {
        ListView1.DataSource = da.GetEmployee(1,2);
        AspNetPager1.RecordCount = da.List.Count;
        ListView1.DataBind();
    }


    protected void AspNetPager1_PageChanging(object src, Wuqi.Webdiyer.PageChangingEventArgs e)
    {
        ListView1.DataSource = da.GetEmployee(e.NewPageIndex*2-1, 2);
        ListView1.DataBind();
    }
}

 

模拟数据提供代码：

 

public class DataAccess
{
    public List<Employee> List;
    public DataAccess()
    {
        List = new List<Employee>();
        List = new List<Employee>();
        Employee e1 = new Employee { ID = 1, Name = "A", Age = 10, Sex = 1 };
        Employee e2 = new Employee { ID = 3, Name = "M", Age = 30, Sex = 0 };
        Employee e3 = new Employee { ID = 2, Name = "B", Age = 40, Sex = 1 };
        Employee e4 = new Employee { ID = 4, Name = "S", Age = 19, Sex = 0 };
        Employee e5 = new Employee { ID = 6, Name = "X", Age = 18, Sex = 1 };
        Employee e6 = new Employee { ID = 5, Name = "W", Age = 20, Sex = 0 };
        List.Add(e1);
        List.Add(e2);
        List.Add(e3);
        List.Add(e4);
        List.Add(e5);
        List.Add(e6);

    }
    public List<Employee> GetEmployee(int startIndex, int rowsCount)
    {
        List<Employee> listTemp = new List<Employee>();
        for (int i = startIndex; i < startIndex+rowsCount; i++)
        {
            listTemp.Add(List[i-1]);
        }
        return listTemp;
    }
}

 

7、内嵌DetailsView控件

前端代码

<asp:ListView ID="ListView1" runat="server" OnSelectedIndexChanging="ListView1_SelectedIndexChanging">
            <LayoutTemplate>
                <table id="Table1" runat="server" border="0" style="">
                    <tr runat="server" id="itemPlaceholder" />
                </table>
            </LayoutTemplate>
            <ItemTemplate>
                <tr>
                    <td>
                        <asp:LinkButton ID="SelectButton" CommandName="Select" runat="server" Text="Details" />
                    </td>
                    <td>
                        <%#Eval("ID") %>
                    </td>
                    <td>
                        <asp:Label ID="idLabel" runat="server" Text='<%# Eval("name") %>' />
                    </td>
                    <td>
                        <asp:Label ID="xLabel" runat="server" Text='<%# Eval("age") %>' />
                    </td>
                </tr>
            </ItemTemplate>
            <SelectedItemTemplate>
            <tr><td>
                <asp:DetailsView ID="DetailsView1" runat="server" Height="50px" Width="125px">

                </asp:DetailsView></td></tr>
            </SelectedItemTemplate>
        </asp:ListView>

 

后台代码：

 

public partial class ListView技巧_Code15 : System.Web.UI.Page
{
    DataAccess da;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["da"] == null)
        {
            da = new DataAccess();
            Session["da"] = da;
        }
        else
        {
            da = Session["da"] as DataAccess;
        }
        if (!IsPostBack)
        {
            Bind();
        }
    }

    private void Bind()
    {
        ListView1.DataSource = da.List;
        ListView1.DataBind();
    }
    protected void ListView1_SelectedIndexChanging(object sender, ListViewSelectEventArgs e)
    {
        ListView1.SelectedIndex = e.NewSelectedIndex;
       
        
        Bind();
        DetailsView dv = ListView1.Items[e.NewSelectedIndex].FindControl("DetailsView1") as DetailsView;
        dv.DataSource = da.List;
        dv.DataBind();
    }
}

 

8、内嵌GridView带修改

前端代码

 

 

<asp:ListView ID="ListView1" runat="server" 
            onselectedindexchanging="ListView1_SelectedIndexChanging">
            <LayoutTemplate>
                <table id="Table1" runat="server" border="0" style="">
                    <tr runat="server" id="itemPlaceholder" />
                </table>
            </LayoutTemplate>
            <ItemTemplate>
                <tr>
                <td>
                    <asp:LinkButton ID="SelectButton" CommandName="Select" runat="server" Text="选择" />
                    </td>
                    <td>
                        <%#Eval("ID") %>
                    </td>
                    <td>
                        <asp:Label ID="idLabel" runat="server" Text='<%# Eval("name") %>' />
                    </td>
                    <td>
                        <asp:Label ID="xLabel" runat="server" Text='<%# Eval("age") %>' />
                    </td>
                    
                    
                </tr>
            </ItemTemplate>
            <SelectedItemTemplate>
                
            <tr>
                    <td>
                      <asp:GridView ID="GridView1" runat="server" AutoGenerateEditButton="true"
                       OnRowEditing="GridView1_Editing"  OnRowUpdating="GridView1_Updating" 
                        OnRowCancelingEdit="GridView1_CancelingEdit" AutoGenerateColumns="false">
                        <Columns>
                        <asp:BoundField DataField="ID" ReadOnly="true" />
                        <asp:BoundField DataField="name" />
                        <asp:BoundField DataField="Age" />
  
                        </Columns>
                    </asp:GridView>
                    </td>
                   
                    
                </tr>
            </SelectedItemTemplate>
       </asp:ListView>

 

后台代码

 

DataAccess da;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["da"] == null)
        {
            da = new DataAccess();
            Session["da"] = da;
        }
        else
        {
            da = Session["da"] as DataAccess;
        }
        if (!IsPostBack)
        {
            Bind();
        }
    }

    private void Bind()
    {
        ListView1.DataSource = da.List;
        ListView1.DataBind();
    }
    protected void ListView1_SelectedIndexChanging(object sender, ListViewSelectEventArgs e)
    {
        ListView1.SelectedIndex = e.NewSelectedIndex;
        Bind();
        ViewState["SelectedIndex"] = e.NewSelectedIndex;
        int selectIndex = (int)ViewState["SelectedIndex"];
        GridView gv = (GridView)ListView1.Items[selectIndex].FindControl("GridView1");
        gv.DataSource = da.List;
        gv.DataBind();
    }
    protected void GridView1_Editing(object sender, GridViewEditEventArgs e)
    {
        int selectIndex = (int)ViewState["SelectedIndex"];
        GridView gv = (GridView)ListView1.Items[selectIndex].FindControl("GridView1");
        gv.EditIndex = e.NewEditIndex;
        gv.DataSource = da.List;
        gv.DataBind();
    }
    protected void GridView1_Updating(object sender, GridViewUpdateEventArgs e)
    {
        int selectIndex = (int)ViewState["SelectedIndex"];
        GridView gv = (GridView)ListView1.Items[selectIndex].FindControl("GridView1");
        string id=gv.Rows[e.RowIndex].Cells[1].Text;
        string name= ((TextBox)gv.Rows[e.RowIndex].Cells[2].Controls[0]).Text;
        string Age= ((TextBox)gv.Rows[e.RowIndex].Cells[3].Controls[0]).Text;
        Employee employee = da.Find(Convert.ToInt32(id));
        employee.Name = name;
        employee.Age = Convert.ToInt32(Age);
        gv.EditIndex = -1;
        gv.DataSource = da.List;
        gv.DataBind();
    }
    protected void GridView1_CancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        int selectIndex = (int)ViewState["SelectedIndex"];
        GridView gv = (GridView)ListView1.Items[selectIndex].FindControl("GridView1");
        gv.EditIndex = -1;
        gv.DataSource = da.List;
        gv.DataBind();
    }

模拟数据提供和前边一样这里就不贴了

 

未完待续... ...