TemplateField.EditItemTemplate Propiedad

Definición

Obtiene o establece la plantilla para mostrar un elemento en modo de edición en un objeto TemplateField.Gets or sets the template for displaying an item in edit mode in a TemplateField object.

public:
 virtual property System::Web::UI::ITemplate ^ EditItemTemplate { System::Web::UI::ITemplate ^ get(); void set(System::Web::UI::ITemplate ^ value); };
[System.ComponentModel.Browsable(false)]
[System.Web.UI.PersistenceMode(System.Web.UI.PersistenceMode.InnerProperty)]
[System.Web.UI.TemplateContainer(typeof(System.Web.UI.IDataItemContainer), System.ComponentModel.BindingDirection.TwoWay)]
public virtual System.Web.UI.ITemplate EditItemTemplate { get; set; }
member this.EditItemTemplate : System.Web.UI.ITemplate with get, set
Public Overridable Property EditItemTemplate As ITemplate

Valor de propiedad

Un objeto implementado por ITemplate que contiene la plantilla para mostrar un elemento en modo de edición en TemplateField.A ITemplate-implemented object that contains the template for displaying an item in edit mode in a TemplateField. El valor predeterminado es null, lo que indica que esta propiedad no se estableció.The default is null, which indicates that this property is not set.

Atributos

Ejemplos

En el ejemplo de código siguiente se muestra cómo EditItemTemplate utilizar la propiedad para crear una plantilla personalizada para un elemento en modo de TemplateField edición en una columna GridView de campo de un control.The following code example demonstrates how to use the EditItemTemplate property to create a custom template for an item in edit mode in a TemplateField field column of a GridView control. La plantilla contiene los controles de servidor de validación para evitar que un usuario abandone un campo de valor vacío.The template contains validation server controls to prevent a user from leaving a value field empty.

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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
  
  void AuthorsGridView_RowUpdating (Object sender, GridViewUpdateEventArgs e)
  {
    
    // The GridView control does not automatically extract updated values 
    // from TemplateField column fields. These values must be added manually 
    // to the NewValues dictionary.
    
    // Get the GridViewRow object that represents the row being edited
    // from the Rows collection of the GridView control.
    int index = AuthorsGridView.EditIndex;
    GridViewRow row = AuthorsGridView.Rows[index];
    
    // Get the controls that contain the updated values. In this
    // example, the updated values are contained in the TextBox 
    // controls declared in the edit item templates of each TemplateField 
    // column fields in the GridView control.
    TextBox lastName = (TextBox)row.FindControl("LastNameTextBox");
    TextBox firstName = (TextBox)row.FindControl("FirstNameTextBox");
    
    // Add the updated values to the NewValues dictionary. Use the
    // parameter names declared in the parameterized update query 
    // string for the key names.
    e.NewValues["au_lname"] = lastName.Text;
    e.NewValues["au_fname"] = firstName.Text;    
          
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TemplateField EditItemTemplate Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>TemplateField EditItemTemplate Example</h3>

      <!-- The GridView control automatically sets the columns     -->
      <!-- specified in the datakeynames attribute as read-only.   -->
      <!-- No input controls are rendered for these columns in     -->
      <!-- edit mode.                                              -->
      <asp:gridview id="AuthorsGridView" 
        datasourceid="AuthorsSqlDataSource" 
        autogeneratecolumns="false"
        autogenerateeditbutton="true"
        datakeynames="au_id"
        cellpadding="10"
        onrowupdating="AuthorsGridView_RowUpdating"      
        runat="server">
                
        <columns>
        
          <asp:boundfield datafield="au_id"
            headertext="Author ID"
            readonly="true"/>
            
          <asp:templatefield headertext="Last Name"
            itemstyle-verticalalign="Top">
            
            <itemtemplate>
              <%#Eval("au_lname")%>
            </itemtemplate>
            
            <edititemtemplate>
              <asp:textbox id="LastNameTextBox"
                text='<%#Eval("au_lname")%>'
                width="90"
                runat="server"/>
              <br/>
              <asp:requiredfieldvalidator id="LastNameRequiredValidator"
                controltovalidate="LastNameTextBox"
                display="Dynamic"
                text="Please enter a last name." 
                runat="server" />                                      
            </edititemtemplate>
            
          </asp:templatefield>
          
          <asp:templatefield headertext="First Name"
            itemstyle-verticalalign="Top">
            
            <itemtemplate>
              <%#Eval("au_fname")%>
            </itemtemplate>
            
            <edititemtemplate>
              <asp:textbox id="FirstNameTextBox"
                text='<%#Eval("au_fname")%>'
                width="90"
                runat="server"/>
              <br/>
              <asp:requiredfieldvalidator id="FirstNameRequiredValidator"
                controltovalidate="FirstNameTextBox"
                display="Dynamic"
                text="Please enter a first name."
                runat="server" />                      
            </edititemtemplate>
            
          </asp:templatefield>
          
          <asp:checkboxfield datafield="contract" 
            headertext="Contract"
            readonly="true"/>
            
        </columns>
                
      </asp:gridview>
            
      <!-- This example uses Microsoft SQL Server and connects -->
      <!-- to the Pubs sample database.                         -->
      <asp:sqldatasource id="AuthorsSqlDataSource"  
        selectcommand="SELECT [au_id], [au_lname], [au_fname], [contract] FROM [authors]"             
        updatecommand="UPDATE authors SET au_lname=@au_lname, au_fname=@au_fname WHERE (authors.au_id = @au_id)" 
        connectionstring="server=localhost;database=pubs;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">
<script runat="server">
  
  Sub AuthorsGridView_RowUpdating(ByVal sender As Object, ByVal e As GridViewUpdateEventArgs)
    
    ' The GridView control does not automatically extract updated values 
    ' from TemplateField column fields. These values must be added manually 
    ' to the NewValues dictionary.
    
    ' Get the GridViewRow object that represents the row being edited
    ' from the Rows collection of the GridView control.
    Dim index As Integer = AuthorsGridView.EditIndex
    Dim row As GridViewRow = AuthorsGridView.Rows(index)
    
    ' Get the controls that contain the updated values. In this
    ' example, the updated values are contained in the TextBox 
    ' controls declared in the edit item templates of each TemplateField 
    ' column fields in the GridView control.
    Dim lastName As TextBox = CType(row.FindControl("LastNameTextBox"), TextBox)
    Dim firstName As TextBox = CType(row.FindControl("FirstNameTextBox"), TextBox)
    
    ' Add the updated values to the NewValues dictionary. Use the
    ' parameter names declared in the parameterized update query 
    ' string for the key names.
    e.NewValues("au_lname") = lastName.Text
    e.NewValues("au_fname") = firstName.Text
          
  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TemplateField EditItemTemplate Example</title>
</head>
<body>
    <form id="Form1" runat="server">
        
      <h3>TemplateField EditItemTemplate Example</h3>

      <!-- The GridView control automatically sets the columns     -->
      <!-- specified in the datakeynames attribute as read-only.   -->
      <!-- No input controls are rendered for these columns in     -->
      <!-- edit mode.                                              -->
      <asp:gridview id="AuthorsGridView" 
        datasourceid="AuthorsSqlDataSource" 
        autogeneratecolumns="false"
        autogenerateeditbutton="true"
        datakeynames="au_id"
        cellpadding="10"
        onrowupdating="AuthorsGridView_RowUpdating"      
        runat="server">
                
        <columns>
        
          <asp:boundfield datafield="au_id"
            headertext="Author ID"
            readonly="true"/>
            
          <asp:templatefield headertext="Last Name"
            itemstyle-verticalalign="Top">
            
            <itemtemplate>
              <%#Eval("au_lname")%>
            </itemtemplate>
            
            <edititemtemplate>
              <asp:textbox id="LastNameTextBox"
                text='<%#Eval("au_lname")%>'
                width="90"
                runat="server"/>
              <br/>
              <asp:requiredfieldvalidator id="LastNameRequiredValidator"
                controltovalidate="LastNameTextBox"
                display="Dynamic"
                text="Please enter a last name." 
                runat="server" />                                      
            </edititemtemplate>
            
          </asp:templatefield>
          
          <asp:templatefield headertext="First Name"
            itemstyle-verticalalign="Top">
            
            <itemtemplate>
              <%#Eval("au_fname")%>
            </itemtemplate>
            
            <edititemtemplate>
              <asp:textbox id="FirstNameTextBox"
                text='<%#Eval("au_fname")%>'
                width="90"
                runat="server"/>
              <br/>
              <asp:requiredfieldvalidator id="FirstNameRequiredValidator"
                controltovalidate="FirstNameTextBox"
                display="Dynamic"
                text="Please enter a first name."
                runat="server" />                      
            </edititemtemplate>
            
          </asp:templatefield>
          
          <asp:checkboxfield datafield="contract" 
            headertext="Contract"
            readonly="true"/>
            
        </columns>
                
      </asp:gridview>
            
      <!-- This example uses Microsoft SQL Server and connects -->
      <!-- to the Pubs sample database.                         -->
      <asp:sqldatasource id="AuthorsSqlDataSource"  
        selectcommand="SELECT [au_id], [au_lname], [au_fname], [contract] FROM [authors]"             
        updatecommand="UPDATE authors SET au_lname=@au_lname, au_fname=@au_fname WHERE (authors.au_id = @au_id)" 
        connectionstring="server=localhost;database=pubs;integrated security=SSPI"
        runat="server">
      </asp:sqldatasource>
            
    </form>
  </body>
</html>

Comentarios

Utilice la EditItemTemplate propiedad para especificar el contenido personalizado que se muestra para un elemento que está en modo de TemplateField edición en un objeto.Use the EditItemTemplate property to specify the custom content displayed for an item that is in edit mode in a TemplateField object. Defina el contenido mediante la creación de una plantilla que especifica cómo se representa un elemento en modo de edición.Define the content by creating a template that specifies how an item in edit mode is rendered. La EditItemTemplate propiedad normalmente contiene controles de entrada para que el usuario modifique un valor en un origen de datos.The EditItemTemplate property usually contains input controls for the user to modify a value in a data source.

Para especificar una plantilla, coloque primero las etiquetas <EditItemTemplate> <TemplateField> de apertura y cierre entre las etiquetas de apertura y cierre del elemento.To specify a template, first place opening and closing <EditItemTemplate> tags between the opening and closing tags of the <TemplateField> element. A continuación, agregue el contenido personalizado entre las etiquetas de <EditItemTemplate> apertura y cierre.Next, add the custom content between the opening and closing <EditItemTemplate> tags. El contenido puede ser tan simple como texto sin formato o más complejo (incrustar otros controles en la plantilla, por ejemplo).The content can be as simple as plain text or more complex (embedding other controls in the template, for example).

Para tener acceso mediante programación a un control definido en una plantilla, primero TableCell debe determinar qué objeto del control enlazado a datos contiene el control.To programmatically access a control defined in a template, first determine which TableCell object in the data-bound control contains the control. A continuación, use Controls la colección TableCell del objeto para obtener acceso al control.Next, use the Controls collection of the TableCell object to access the control. También puede utilizar el FindControl método TableCell del objeto para buscar el control, si el control tiene una ID propiedad especificada.You can also use the FindControl method of the TableCell object to find the control, if the control has an ID property specified.

Se aplica a

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