Ch.10-3-2 .FindControl()方法的補充範例 -- ASP.NET 專題實務(上集 )

2012-04-22

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ASP.NET 4.0與 VS 2010
2013-04-30

摘要:上集，Ch.10-3 .FindControl()方法的補充範例 -- ASP.NET 專題實務(上集 )

ASP.NET 專題實務(上集 )

Ch.10-3-2 .FindControl()方法的補充範例

HTML畫面(C#)

<head runat="server">
    <style type="text/css">
        .style1 {
            color: #FF0000;
        }
    </style>
</head>

<body>
    <form id="form1" runat="server">
    <div>

        <br />
        當您按下<strong>[選取]按鈕,</strong>就會抓到那一列的 <strong>title欄位的 [值]</strong><br />
        <br />
        請先將 GridView的 <strong>title欄位 </strong>設定為<span class="style1"><strong>樣板</strong></span><br />

        <asp:GridView ID="GridView1" runat="server" AllowPaging="True"
            AllowSorting="True" AutoGenerateColumns="False" BackColor="White"
            BorderColor="#999999" BorderStyle="None" BorderWidth="1px" CellPadding="3"
            DataKeyNames="id" DataSourceID="SqlDataSource1" GridLines="Vertical"
            onselectedindexchanging="GridView1_SelectedIndexChanging" >
            <AlternatingRowStyle BackColor="#DCDCDC" />
            <Columns>
                <asp:CommandField ShowSelectButton="True" />
                <asp:BoundField DataField="id" HeaderText="id" InsertVisible="False"
                    ReadOnly="True" SortExpression="id" />
                <asp:BoundField DataField="test_time" HeaderText="test_time"
                    SortExpression="test_time" />

                <asp:TemplateField HeaderText="title" SortExpression="title">
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("title") %>'></asp:TextBox>
                    </EditItemTemplate>

                    <ItemTemplate>
                        <asp:Label ID="Label1" runat="server" Text='<%# Bind("title") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
            <FooterStyle BackColor="#CCCCCC" ForeColor="Black" />
            <HeaderStyle BackColor="#000084" Font-Bold="True" ForeColor="White" />
            <PagerStyle BackColor="#999999" ForeColor="Black" HorizontalAlign="Center" />
            <RowStyle BackColor="#EEEEEE" ForeColor="Black" />
            <SelectedRowStyle BackColor="#008A8C" Font-Bold="True" ForeColor="White" />
            <SortedAscendingCellStyle BackColor="#F1F1F1" />
            <SortedAscendingHeaderStyle BackColor="#0000A9" />
            <SortedDescendingCellStyle BackColor="#CAC9C9" />
            <SortedDescendingHeaderStyle BackColor="#000065" />
        </asp:GridView>

        <asp:SqlDataSource ID="SqlDataSource1" runat="server"
            ConnectionString="<%$ ConnectionStrings:testConnectionString(請自己修改) %>"
            SelectCommand="SELECT [id], [test_time], [title] FROM [test]" >

        </asp:SqlDataSource>
        <br />
        <br />
    </div>
    </form>
</body>
</html>

=======================================================================================

Code Behind (C#)

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            Label lb = (Label)GridView1.Rows[0].FindControl("Label1");
            Response.Write(lb.Text);
        }
    }

    protected void GridView1_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
    {
        Label lb = (Label)GridView1.Rows[e.NewSelectedIndex].FindControl("Label1");
        Response.Write(lb.Text);
    }

Code Behind (VB)

    Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
        If Not Page.IsPostBack Then

            Dim lb As Label = CType(GridView1.Rows(0).FindControl("Label1"), Label)
            Response.Write(lb.Text)
        End If
    End Sub

Protected Sub GridView1_SelectedIndexChanging(sender As Object, e As System.Web.UI.WebControls.GridViewSelectEventArgs) Handles GridView1.SelectedIndexChanging

        Dim lb As Label = CType(GridView1.Rows(e.NewSelectedIndex).FindControl("Label1"), Label)
        Response.Write(lb.Text)
    End Sub

範例下載 -- Ch.10-3-2_CS.rar

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