HyperLinkField.DataTextField Proprietà

Definizione

Ottiene o imposta il nome del campo dell'origine dati contenente il testo da visualizzare per le didascalie dei collegamenti ipertestuali nell'oggetto HyperLinkField.Gets or sets the name of the field from the data source containing the text to display for the hyperlink captions in the HyperLinkField object.

public:
 virtual property System::String ^ DataTextField { System::String ^ get(); void set(System::String ^ value); };
[System.ComponentModel.TypeConverter("System.Web.UI.Design.DataSourceViewSchemaConverter, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
[System.ComponentModel.TypeConverter("System.Web.UI.Design.DataSourceViewSchemaConverter, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
public virtual string DataTextField { get; set; }
member this.DataTextField : string with get, set
Public Overridable Property DataTextField As String

Valore della proprietà

Il nome del campo dell'origine dati contenente i valori da visualizzare per le didascalie dei collegamenti ipertestuali nell'oggetto HyperLinkField.The name of the field from the data source containing the values to display for the hyperlink captions in the HyperLinkField. Il valore predefinito è una stringa vuota (""), a indicare che questa proprietà non è impostata.The default is an empty string (""), which indicates that this property is not set.

Attributi

Esempi

Nell'esempio di codice seguente viene illustrato come utilizzare la proprietà DataTextField per specificare un campo dall'origine dati da associare alle didascalie dei collegamenti ipertestuali visualizzate in un oggetto HyperLinkField.The following code example demonstrates how to use the DataTextField property to specify a field from the data source to bind to the hyperlink captions displayed in a HyperLinkField object.


<%@ 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>HyperLinkField DataBinding Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>HyperLinkField DataBinding Example</h3>
                    
      <!-- Populate the Columns collection declaratively. -->
      <!-- Bind the CompanyName and HomePage fields from the   -->
      <!-- Northwind database to the caption and URL of the    -->
      <!-- hyperlinks in the HyperLinkField field column. Note -->
      <!-- that the URLs specified in the Northwind database   -->
      <!-- might not be valid URLs.                            -->
      <asp:gridview id="SuppliersGridView" 
        datasourceid="SuppliersSqlDataSource" 
        autogeneratecolumns="false"
        runat="server">
                
        <columns>
                
          <asp:hyperlinkfield datatextfield="CompanyName"
            datanavigateurlfields="HomePage"          
            headertext="Company Name"
            target="_blank" />
          <asp:boundfield datafield="City" 
            headertext="City"/>
                 
        </columns>
                
      </asp:gridview>
            
      <!-- This example uses Microsoft SQL Server and connects -->
      <!-- to the Northwind sample database.                   -->
      <asp:sqldatasource id="SuppliersSqlDataSource"  
        selectcommand="SELECT [SupplierID], [CompanyName], [City], [HomePage] FROM [Suppliers]"
        connectionstring="server=localhost;database=northwind;integrated security=SSPI"
        runat="server">
      </asp:sqldatasource>
            
    </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>HyperLinkField DataBinding Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>HyperLinkField DataBinding Example</h3>
                    
      <!-- Populate the Columns collection declaratively. -->
      <!-- Bind the CompanyName and HomePage fields from the   -->
      <!-- Northwind database to the caption and URL of the    -->
      <!-- hyperlinks in the HyperLinkField field column. Note -->
      <!-- that the URLs specified in the Northwind database   -->
      <!-- might not be valid URLs.                            -->
      <asp:gridview id="SuppliersGridView" 
        datasourceid="SuppliersSqlDataSource" 
        autogeneratecolumns="false"
        runat="server">
                
        <columns>
                
          <asp:hyperlinkfield datatextfield="CompanyName"
            datanavigateurlfields="HomePage"          
            headertext="Company Name"
            target="_blank" />
          <asp:boundfield datafield="City" 
            headertext="City"/>
                 
        </columns>
                
      </asp:gridview>
            
      <!-- This example uses Microsoft SQL Server and connects -->
      <!-- to the Northwind sample database.                   -->
      <asp:sqldatasource id="SuppliersSqlDataSource"  
        selectcommand="SELECT [SupplierID], [CompanyName], [City], [HomePage] FROM [Suppliers]"
        connectionstring="server=localhost;database=northwind;integrated security=SSPI"
        runat="server">
      </asp:sqldatasource>
            
    </form>
  </body>
</html>

Nell'esempio di codice riportato di seguito viene illustrato come utilizzare la proprietà DataTextFormatString per formattare i valori associati alle didascalie dei collegamenti ipertestuali visualizzati in un oggetto HyperLinkField.The following code example demonstrates how to use the DataTextFormatString property to format the values bound to the hyperlink captions displayed in a HyperLinkField object. I valori sono formattati come valuta.The values are formatted as currency.


<%@ 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>HyperLinkField Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>HyperLinkField Example</h3>
                    
      <!-- Populate the Columns collection declaratively. -->
      <!-- The UnitPrice field values are bound to the         -->
      <!-- captions of the hyperlinks in the HyperLinkField    -->
      <!-- field column, formatted as currency. The ProductID  -->
      <!-- field values are bound to the navigate URLs of the  -->
      <!-- hyperlinks. However, instead of being the actual    -->
      <!-- URL values, the product ID is passed to the linked  -->
      <!-- page as a parameter in the URL specified by the     -->
      <!-- DataNavigateUrlFormatString property.               -->
      <asp:gridview id="OrdersGridView" 
        datasourceid="OrdersSqlDataSource" 
        autogeneratecolumns="false"
        runat="server">
                
        <columns>
                
          <asp:boundfield datafield="OrderID" 
            headertext="Order ID"/>
          <asp:boundfield datafield="ProductID" 
            headertext="Product ID"/>
          <asp:hyperlinkfield datatextfield="UnitPrice"
            datatextformatstring="{0:c}"
            datanavigateurlfields="ProductID"
            datanavigateurlformatstring="~\details.aspx?ProductID={0}"          
            headertext="Price"
            target="_blank" />
          <asp:boundfield datafield="Quantity" 
            headertext="Quantity"/>
                 
        </columns>
                
      </asp:gridview>
            
      <!-- This example uses Microsoft SQL Server and connects -->
      <!-- to the Northwind sample database.                   -->
      <asp:sqldatasource id="OrdersSqlDataSource"  
        selectcommand="SELECT [OrderID], [ProductID], [UnitPrice], [Quantity] FROM [Order Details]"
        connectionstring="server=localhost;database=northwind;integrated security=SSPI"
        runat="server">
      </asp:sqldatasource>
            
    </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>HyperLinkField DataTextFormatString and DataNavigateUrlFormatString Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>HyperLinkField DataTextFormatString and DataNavigateUrlFormatString Example</h3>
                    
      <!-- Populate the Columns collection declaratively. -->
      <!-- The UnitPrice field values are bound to the         -->
      <!-- captions of the hyperlinks in the HyperLinkField    -->
      <!-- field column, formatted as currency. The ProductID  -->
      <!-- field values are bound to the navigate URLs of the  -->
      <!-- hyperlinks. However, instead of being the actual    -->
      <!-- URL values, the product ID is passed to the linked  -->
      <!-- page as a parameter in the URL specified by the     -->
      <!-- DataNavigateUrlFormatString property.               -->
      <asp:gridview id="OrdersGridView" 
        datasourceid="OrdersSqlDataSource" 
        autogeneratecolumns="false"
        runat="server">
                
        <columns>
                
          <asp:boundfield datafield="OrderID" 
            headertext="Order ID"/>
          <asp:boundfield datafield="ProductID" 
            headertext="Product ID"/>
          <asp:hyperlinkfield datatextfield="UnitPrice"
            datatextformatstring="{0:c}"
            datanavigateurlfields="ProductID"
            datanavigateurlformatstring="~\details.aspx?ProductID={0}"          
            headertext="Price"
            target="_blank" />
          <asp:boundfield datafield="Quantity" 
            headertext="Quantity"/>
                 
        </columns>
                
      </asp:gridview>
            
      <!-- This example uses Microsoft SQL Server and connects -->
      <!-- to the Northwind sample database.                   -->
      <asp:sqldatasource id="OrdersSqlDataSource"  
        selectcommand="SELECT [OrderID], [ProductID], [UnitPrice], [Quantity] FROM [Order Details]"
        connectionstring="server=localhost;database=northwind;integrated security=SSPI"
        runat="server">
      </asp:sqldatasource>
            
    </form>
  </body>
</html>

Commenti

Utilizzare la proprietà DataTextField per specificare il nome del campo contenente il testo da visualizzare per le didascalie dei collegamenti ipertestuali nell'oggetto HyperLinkField.Use the DataTextField property to specify the name of the field that contains the text to display for the hyperlink captions in the HyperLinkField object.

Anziché usare questa proprietà per associare le didascalie dei collegamenti ipertestuali a un campo, è possibile usare la proprietà Text per impostare le didascalie dei collegamenti ipertestuali su un valore statico.Instead of using this property to bind the hyperlink captions to a field, you can use the Text property to set the hyperlink captions to a static value. Con questa opzione, ogni collegamento ipertestuale condivide la stessa didascalia.With this option, each hyperlink shares the same caption.

Nota

Se le proprietà DataTextField e Text sono entrambe impostate, la proprietà DataTextField avrà la precedenza.If the DataTextField and Text properties are both set, the DataTextField property takes precedence.

Si applica a

Vedi anche