Bagikan melalui


DataGridColumn.FooterText Properti

Definisi

Mendapatkan atau mengatur teks yang ditampilkan di bagian footer kolom.

public:
 virtual property System::String ^ FooterText { System::String ^ get(); void set(System::String ^ value); };
public virtual string FooterText { get; set; }
member this.FooterText : string with get, set
Public Overridable Property FooterText As String

Nilai Properti

Teks ditampilkan di bagian footer kolom. Nilai defaultnya adalah Empty.

Contoh

Contoh kode berikut menunjukkan cara menggunakan FooterText properti untuk menentukan teks yang ditampilkan di bagian footer kolom.


<%@ Page Language="C#" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
 
<!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" >
   <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>
 
<head runat="server">
    <title>DataGridColumn HeaderText and FooterText Example</title>
</head>
<body>
 
   <form id="form1" 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="VB" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
 
<!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" >
   <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>
 
<head runat="server">
    <title>DataGridColumn HeaderText and FooterText Example</title>
</head>
<body>
 
   <form id="form1" 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>

Keterangan

FooterText Gunakan properti untuk menentukan atau menentukan teks yang ditampilkan di bagian footer kolom.

Perhatian

Teks tidak dikodekan HTML sebelum ditampilkan di bagian footer kolom. Ini memungkinkan untuk menyematkan skrip dalam tag HTML dalam teks. Jika properti ini diatur secara dinamis menggunakan input pengguna, pastikan untuk memvalidasi nilai untuk mengurangi kerentanan keamanan.

Berlaku untuk

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