WebControl.ApplyStyle(Style) Metodo
Definizione
Importante
Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.
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 -> unitPublic Sub ApplyStyle (s As Style)Parametri
Esempio
Nell'esempio seguente viene illustrato come usare 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 Forms, vedere Web Forms ASP.NET Page Code Model.
<%@ 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>