GridView.ShowHeader Property

Definition

Ottiene o imposta un valore che indica se in un controllo GridView viene visualizzata la riga dell'intestazione.Gets or sets a value indicating whether the header row is displayed in a GridView control.

public:
 virtual property bool ShowHeader { bool get(); void set(bool value); };
public virtual bool ShowHeader { get; set; }
member this.ShowHeader : bool with get, set
Public Overridable Property ShowHeader As Boolean

Property Value

Boolean

true per visualizzare la riga dell'intestazione, altrimenti false.true to display the header row; otherwise, false. Il valore predefinito è true.The default is true.

Examples

Nell'esempio seguente viene illustrato come utilizzare la proprietà ShowHeader per visualizzare la riga di intestazione in un controllo GridView.The following example demonstrates how to use the ShowHeader property to display the header row in a GridView control.


<%@ Page language="C#" %>

<!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" >
  <head runat="server">
    <title>GridView ShowHeader and ShowFooter Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>GridView ShowHeader and ShowFooter Example</h3>

      <asp:gridview id="CustomersGridView" 
        datasourceid="CustomersSource" 
        autogeneratecolumns="true"
        emptydatatext="No data available." 
        showheader="true"
        showfooter="true"
        runat="server">
        
        <headerstyle backcolor="LightCyan"
          forecolor="MediumBlue"/>
                    
        <footerstyle backcolor="LightCyan"
          forecolor="MediumBlue"/>
                                    
      </asp:gridview>
            
      <!-- This example uses Microsoft SQL Server and connects  -->
      <!-- to the Northwind sample database. Use an ASP.NET     -->
      <!-- expression to retrieve the connection string value   -->
      <!-- from the Web.config file.                            -->
      <asp:sqldatasource id="CustomersSource"
        selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" 
        runat="server"/>
        
    </form>
  </body>
</html>


<%@ Page language="VB" %>

<!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" >
  <head runat="server">
    <title>GridView ShowHeader and ShowFooter Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>GridView ShowHeader and ShowFooter Example</h3>

      <asp:gridview id="CustomersGridView" 
        datasourceid="CustomersSource" 
        autogeneratecolumns="true"
        emptydatatext="No data available." 
        showheader="true"
        showfooter="true"
        runat="server">
        
        <headerstyle backcolor="LightCyan"
          forecolor="MediumBlue"/>
                    
        <footerstyle backcolor="LightCyan"
          forecolor="MediumBlue"/>
                                    
      </asp:gridview>
            
      <!-- This example uses Microsoft SQL Server and connects  -->
      <!-- to the Northwind sample database. Use an ASP.NET     -->
      <!-- expression to retrieve the connection string value   -->
      <!-- from the Web.config file.                            -->
      <asp:sqldatasource id="CustomersSource"
        selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" 
        runat="server"/>
        
    </form>
  </body>
</html>

Remarks

Utilizzare la proprietà ShowHeader per specificare se un controllo GridView Visualizza la riga di intestazione.Use the ShowHeader property to specify whether a GridView control displays the header row. Per controllare l'aspetto della riga di intestazione, utilizzare la proprietà HeaderStyle.To control the appearance of the header row, use the HeaderStyle property.

Applies to

See also