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WebControl.ApplyStyle(Style) Metodo

Definizione

Copia tutti gli elementi non vuoti dello stile specificato nel controllo Web, sovrascrivendo eventuali elementi di stile del controllo. Il metodo viene utilizzato principalmente dagli sviluppatori di controlli.

public:
 void ApplyStyle(System::Web::UI::WebControls::Style ^ s);
public void ApplyStyle (System.Web.UI.WebControls.Style s);
member this.ApplyStyle : System.Web.UI.WebControls.Style -> unit
Public Sub ApplyStyle (s As Style)

Parametri

s
Style

Oggetto Style che rappresenta lo stile da copiare.

Esempio

Nell'esempio seguente viene illustrato come utilizzare il ApplyStyle metodo per applicare uno stile a un DataGrid controllo .

Nota

L'esempio di codice seguente usa il modello di codice a file singolo e potrebbe non funzionare correttamente se copiato direttamente in un file code-behind. Questo esempio di codice deve essere copiato in un file di testo vuoto con estensione .aspx. Per altre informazioni sul modello di codice Web Form, vedere ASP.NET modello di codice della pagina Web Form.


<%@ 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() 
      {
         DataTable dt = new DataTable();
         DataRow dr;
 
         dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32)));
         dt.Columns.Add(new DataColumn("StringValue", typeof(string)));
         dt.Columns.Add(new DataColumn("CurrencyValue", typeof(double)));
 
         for (int i = 0; i < 9; i++) 
         {
            dr = dt.NewRow();
 
            dr[0] = i;
            dr[1] = "Item " + i.ToString();
            dr[2] = 1.23 * (i + 1);
 
            dt.Rows.Add(dr);
         }
 
         DataView dv = new DataView(dt);
         return dv;
      }
 
      void Page_Load(Object sender, EventArgs e) 
      {
         if (!IsPostBack) 
         {
            // Load this data only once.
            ItemsGrid.DataSource= CreateDataSource();
            ItemsGrid.DataBind();
         }
      }

      void Button_Click(Object sender, EventArgs e) 
      {
         Style myStyle = new Style();
         myStyle.ForeColor = System.Drawing.Color.Red;
         myStyle.BackColor = System.Drawing.Color.Yellow;
      
         ItemsGrid.ApplyStyle(myStyle);
      }
 
   </script>
 
<head runat="server">
    <title>WebControl ApplyStyle Example</title>
</head>
<body>
 
   <form id="form1" runat="server">
 
      <h3>WebControl ApplyStyle Example</h3>
 
      <b>Product List</b>
 
      <asp:DataGrid id="ItemsGrid"
           BorderColor="black"
           BorderWidth="1"
           CellPadding="3"
           AutoGenerateColumns="false"
           runat="server">

         <HeaderStyle BackColor="#00aaaa">
         </HeaderStyle>

         <Columns>

            <asp:BoundColumn
                 HeaderText="Number" 
                 DataField="IntegerValue">
            </asp:BoundColumn>

            <asp:BoundColumn
                 HeaderText="Description" 
                 DataField="StringValue">
            </asp:BoundColumn>

            <asp:BoundColumn
                 HeaderText="Price" 
                 DataField="CurrencyValue" 
                 DataFormatString="{0:c}">
            </asp:BoundColumn>

         </Columns>
 
      </asp:DataGrid>

      <br /><br />

      <asp:Button id="Button1" 
           Text="Apply Custom Style"
           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">
 
      Private Function CreateDataSource() As ICollection 
      
         Dim dt As DataTable = New DataTable
         Dim dr As DataRow
         Dim dv As DataView
         Dim i As Integer
 
         dt.Columns.Add(New DataColumn("IntegerValue", GetType(Integer)))
         dt.Columns.Add(New DataColumn("StringValue", GetType(String)))
         dt.Columns.Add(New DataColumn("CurrencyValue", GetType(Double)))
 
         for i = 0 to 9  
         
            dr = dt.NewRow()
 
            dr(0) = i
            dr(1) = "Item " + i.ToString()
            dr(2) = 1.23 * (i + 1)
 
            dt.Rows.Add(dr)

         next i
 
         dv = New DataView(dt)
         CreateDataSource = dv

      End Function
 
      Private Sub Page_Load(sender As Object, e As EventArgs) 
      
         If Not IsPostBack Then 
            ' Load this data only once.
            ItemsGrid.DataSource = CreateDataSource()
            ItemsGrid.DataBind()
         End If

      End Sub

      Private Sub Button_Click(sender As Object, e As EventArgs) 
    
         Dim myStyle As Style = new Style()
         myStyle.ForeColor = System.Drawing.Color.Red
         myStyle.BackColor = System.Drawing.Color.Yellow
      
         ItemsGrid.ApplyStyle(myStyle)

      End Sub
 
   </script>
 
<head runat="server">
    <title>WebControl ApplyStyle Example</title>
</head>
<body>
 
   <form id="form1" runat="server">
 
      <h3>WebControl ApplyStyle Example</h3>
 
      <b>Product List</b>
 
      <asp:DataGrid id="ItemsGrid"
           BorderColor="black"
           BorderWidth="1"
           CellPadding="3"
           AutoGenerateColumns="false"
           runat="server">

         <HeaderStyle BackColor="#00aaaa">
         </HeaderStyle>

         <Columns>

            <asp:BoundColumn
                 HeaderText="Number" 
                 DataField="IntegerValue">
            </asp:BoundColumn>

            <asp:BoundColumn
                 HeaderText="Description" 
                 DataField="StringValue">
            </asp:BoundColumn>

            <asp:BoundColumn
                 HeaderText="Price" 
                 DataField="CurrencyValue" 
                 DataFormatString="{0:c}">
            </asp:BoundColumn>

         </Columns>
 
      </asp:DataGrid>

      <br /><br />

      <asp:Button id="Button1" 
           Text="Apply Custom Style"
           OnClick="Button_Click"
           runat="server"/>
 
   </form>
 
</body>
</html>

Si applica a

Vedi anche