DataGridColumn.FooterText プロパティ
アセンブリ: System.Web (system.web.dll 内)

Dim instance As DataGridColumn Dim value As String value = instance.FooterText instance.FooterText = value
/** @property */ public String get_FooterText () /** @property */ public void set_FooterText (String value)
列のフッター セクションに表示されるテキスト。既定値は String.Empty です。

FooterText プロパティを使用して、列のフッター セクションに表示されるテキストを指定または確認します。
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テキストは、列のフッター セクションに表示されるまで HTML エンコードされません。これによって、テキストの HTML タグ内のスクリプトを埋め込むことができます。このプロパティの値がユーザー入力によって動的に設定される場合は、セキュリティ上の危険性を低減するために、必ず値を検証してください。 |

FooterText プロパティを使用して、列のフッター セクションに表示するテキストを指定する方法を次のコード例に示します。
<%@ Page Language="VB" AutoEventWireup="True" %> <%@ Import Namespace="System.Data" %> <html> <script runat="server"> Function CreateDataSource() As ICollection ' Create sample data for the DataGrid control. Dim dt As DataTable = New DataTable() Dim dr As DataRow ' Define the columns of the table. dt.Columns.Add(new DataColumn("IntegerValue", GetType(Int32))) dt.Columns.Add(new DataColumn("StringValue", GetType(String))) dt.Columns.Add(new DataColumn("CurrencyValue", GetType(Double))) dt.Columns.Add(new DataColumn("BooleanValue", GetType(Boolean))) ' Populate the table with sample values. Dim i As Integer For i = 0 To 4 dr = dt.NewRow() dr(0) = i dr(1) = "Item " & i.ToString() dr(2) = 1.23 * (i + 1) dr(3) = False dt.Rows.Add(dr) Next i ' To persist the data source between posts to the server, store ' it in session state. Session("Source") = dt Dim dv As DataView = New DataView(dt) Return dv End Function Sub Page_Load(sender As Object, e As EventArgs) ' Load sample data only once, when the page is first loaded. If Not IsPostBack Then ' Make sure to set the header text before binding the data to ' the DataGrid control; otherwise, the change will not appear ' until the next time the page is refreshed. ItemsGrid.Columns(0).HeaderText = "Item" ItemsGrid.DataSource = CreateDataSource() ItemsGrid.DataBind() End If End Sub Sub Button_Click(sender As Object, e As EventArgs) Dim subtotal As Double = 0.0 ' Update the data source with the user's selection and ' calculate the subtotal. Dim dt As DataTable = UpdateSource(subtotal) ' Display the subtotal in the footer section of the third column. ItemsGrid.Columns(2).FooterText = _ "Subtotal: " & subtotal.ToString("c") ' Create a DataView and bind it to the DataGrid control. Dim dv As DataView = New DataView(dt) ItemsGrid.DataSource = dv ItemsGrid.DataBind() End Sub Function UpdateSource(ByRef subtotal As Double) As DataTable ' Retrieve the data table from session state. Dim dt As DataTable = CType(Session("Source"), DataTable) Dim item As DataGridItem ' Iterate through the Items collection and update the data source ' with the user's selections. If an item is selected, add the ' amount of the item to the subtotal. For Each item in ItemsGrid.Items ' Retrieve the SelectCheckBox CheckBox control from the ' specified item (row) in the DataGrid control. Dim selection As CheckBox = _ CType(item.FindControl("SelectCheckBox"), CheckBox) If Not selection Is Nothing ' Update the BooleanValue field with the value of the check box. dt.Rows(item.ItemIndex)(3) = selection.Checked ' Add the value of the item to the subtotal if the item is ' selected. If selection.Checked Then subtotal += _ Convert.ToDouble(item.Cells(2).Text.Substring(1)) End If End If Next ' Save the data source. Session("Source") = dt Return dt End Function </script> <body> <form runat=server> <h3>DataGridColumn HeaderText and FooterText Example</h3> <b>Product List</b> <asp:DataGrid id="ItemsGrid" BorderColor="black" BorderWidth="1" CellPadding="3" ShowFooter="True" AutoGenerateColumns="False" runat="server"> <HeaderStyle BackColor="#00aaaa"> </HeaderStyle> <FooterStyle BackColor="#00aaaa"> </FooterStyle> <Columns> <asp:BoundColumn DataField="IntegerValue"/> <asp:BoundColumn DataField="StringValue" HeaderText="Description"/> <asp:BoundColumn DataField="CurrencyValue" HeaderText="Price" DataFormatString="{0:c}"> <ItemStyle HorizontalAlign="Right"> </ItemStyle> </asp:BoundColumn> <asp:TemplateColumn HeaderText="Select Item"> <ItemTemplate> <asp:CheckBox id="SelectCheckBox" Text="Add to Cart" Checked='<%# DataBinder.Eval(Container.DataItem, "BooleanValue") %>' runat="server"/> </ItemTemplate> </asp:TemplateColumn> </Columns> </asp:DataGrid> <br><br> <asp:Button id="SubmitButton" Text="Submit" OnClick = "Button_Click" runat="server"/> </form> </body> </html>
<%@ Page Language="C#" AutoEventWireup="True" %> <%@ Import Namespace="System.Data" %> <html> <script runat="server"> ICollection CreateDataSource() { // Create sample data for the DataGrid control. DataTable dt = new DataTable(); DataRow dr; // Define the columns of the table. dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32))); dt.Columns.Add(new DataColumn("StringValue", typeof(string))); dt.Columns.Add(new DataColumn("CurrencyValue", typeof(double))); dt.Columns.Add(new DataColumn("BooleanValue", typeof(bool))); // Populate the table with sample values. for (int i = 0; i < 5; i++) { dr = dt.NewRow(); dr[0] = i; dr[1] = "Item " + i.ToString(); dr[2] = 1.23 * (i + 1); dr[3] = false; dt.Rows.Add(dr); } // To persist the data source between posts to the server, store // it in session state. Session["Source"] = dt; DataView dv = new DataView(dt); return dv; } void Page_Load(Object sender, EventArgs e) { // Load sample data only once, when the page is first loaded. if (!IsPostBack) { // Make sure to set the header text before binding the data to // the DataGrid control; otherwise, the change will not appear // until the next time the page is refreshed. ItemsGrid.Columns[0].HeaderText = "Item"; ItemsGrid.DataSource = CreateDataSource(); ItemsGrid.DataBind(); } } void Button_Click(Object sender, EventArgs e) { double subtotal = 0.0; // Update the data source with the user's selection and // calculate the subtotal. DataTable dt = UpdateSource(ref subtotal); // Display the subtotal in the footer section of the third column. ItemsGrid.Columns[2].FooterText = "Subtotal: " + subtotal.ToString("c"); // Create a DataView and bind it to the DataGrid control. DataView dv = new DataView(dt); ItemsGrid.DataSource = dv; ItemsGrid.DataBind(); } DataTable UpdateSource(ref double subtotal) { // Retrieve the data table from session state. DataTable dt = (DataTable)Session["Source"]; // Iterate through the Items collection and update the data source // with the user's selections. If an item is selected, add the // amount of the item to the subtotal. foreach (DataGridItem item in ItemsGrid.Items) { // Retrieve the SelectCheckBox CheckBox control from the // specified item (row) in the DataGrid control. CheckBox selection = (CheckBox)item.FindControl("SelectCheckBox"); if (selection != null) { // Update the BooleanValue field with the value of the check box. dt.Rows[item.ItemIndex][3] = selection.Checked; // Add the value of the item to the subtotal if the item is // selected. if (selection.Checked) { subtotal += Convert.ToDouble(item.Cells[2].Text.Substring(1)); } } } // Save the data source. Session["Source"] = dt; return dt; } </script> <body> <form runat=server> <h3>DataGridColumn HeaderText and FooterText Example</h3> <b>Product List</b> <asp:DataGrid id="ItemsGrid" BorderColor="black" BorderWidth="1" CellPadding="3" ShowFooter="True" AutoGenerateColumns="False" runat="server"> <HeaderStyle BackColor="#00aaaa"> </HeaderStyle> <FooterStyle BackColor="#00aaaa"> </FooterStyle> <Columns> <asp:BoundColumn DataField="IntegerValue"/> <asp:BoundColumn DataField="StringValue" HeaderText="Description"/> <asp:BoundColumn DataField="CurrencyValue" HeaderText="Price" DataFormatString="{0:c}"> <ItemStyle HorizontalAlign="Right"> </ItemStyle> </asp:BoundColumn> <asp:TemplateColumn HeaderText="Select Item"> <ItemTemplate> <asp:CheckBox id="SelectCheckBox" Text="Add to Cart" Checked='<%# DataBinder.Eval(Container.DataItem, "BooleanValue") %>' runat="server"/> </ItemTemplate> </asp:TemplateColumn> </Columns> </asp:DataGrid> <br><br> <asp:Button id="SubmitButton" Text="Submit" OnClick = "Button_Click" runat="server"/> </form> </body> </html>

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
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