GridViewRow.RowType Propriété

  • Référence

Définition

Espace de noms:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Obtient le type de ligne de l'objet GridViewRow.

public:
 virtual property System::Web::UI::WebControls::DataControlRowType RowType { System::Web::UI::WebControls::DataControlRowType get(); void set(System::Web::UI::WebControls::DataControlRowType value); };
public virtual System.Web.UI.WebControls.DataControlRowType RowType { get; set; }
member this.RowType : System.Web.UI.WebControls.DataControlRowType with get, set
Public Overridable Property RowType As DataControlRowType

Valeur de propriété

DataControlRowType

Une des valeurs de l'objet DataControlRowType.

Exemples

L’exemple suivant montre comment utiliser la RowType propriété pour déterminer si une ligne créée est une ligne de pied de page. Si la ligne est une ligne de pied de page, la valeur de la somme de la colonne est mise à jour dans la ligne de pied de page.


<%@ 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">
  
  // Create a variable to store the order total.
  private Decimal orderTotal = 0.0M;

  void OrderGridView_RowCreated(Object sender, GridViewRowEventArgs e)
  {
    
    // Retrieve the current row. 
    GridViewRow row = e.Row;
    
    // Update the column total if the row being created is
    // a footer row.
    if (row.RowType == DataControlRowType.Footer)
    {
      
      // Get the OrderTotalTotal Label control in the footer row.
      Label total = (Label)e.Row.FindControl("OrderTotalLabel");
      
      // Display the grand total of the order formatted as currency.
      if (total != null)
      {
        total.Text = orderTotal.ToString("c");
      }
      
    }
    
  }
  
  void OrderGridView_RowDataBound(Object sender, GridViewRowEventArgs e)
  {
   
    // Retrieve the current row. 
    GridViewRow row = e.Row;
    
    // Add the field value to the column total if the row being created is
    // a data row. 
    if (row.RowType == DataControlRowType.DataRow)
    {
      
      // Get the cell that contains the item total.
      TableCell cell = e.Row.Cells[2];
      
      // Get the DataBoundLiteralControl control that contains the 
      // data bound value.
      DataBoundLiteralControl boundControl = (DataBoundLiteralControl)cell.Controls[0];
      
      // Remove the '$' character for the type converter to work properly.
      String itemTotal = boundControl.Text.Replace("$",  "");
      
      // Add the total for an item (row) to the order total.
      orderTotal += Convert.ToDecimal(itemTotal);
      
    }
    
  }
  
</script>

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

      <!-- Populate the Columns collection declaratively. -->
      <!-- Create a custom TemplateField column that uses      -->
      <!-- two Label controls to display an author's first and -->
      <!-- last name in the same column.                       -->
      <asp:gridview id="OrderGridView" 
        datasourceid="OrderSqlDataSource" 
        autogeneratecolumns="False" 
        showfooter="true"
        onrowcreated="OrderGridView_RowCreated"
        onrowdatabound="OrderGridView_RowDataBound"   
        runat="server">
                
        <columns>
        
          <asp:boundfield datafield="UnitPrice"
            itemstyle-horizontalalign="Right"
            headertext="Unit Price" 
            dataformatstring="{0:c}"/>
                  
          <asp:boundfield datafield="Quantity"
            itemstyle-horizontalalign="Right"
            headertext="Quantity"/>
                           
          <asp:templatefield headertext="Total"
            itemstyle-horizontalalign="Right"
            footerstyle-horizontalalign="Right"
            footerstyle-backcolor="Blue"
            footerstyle-forecolor="White">
            <itemtemplate>
              <%#Eval("Total", "{0:c}") %>
            </itemtemplate>
            <footertemplate>
              <asp:label id="OrderTotalLabel"
                runat="server"/>
            </footertemplate>
          </asp:templatefield>
                
        </columns>
                
      </asp:gridview>
            
      <!-- This example uses Microsoft SQL Server and connects -->
      <!-- to the Northwind sample database.                   -->
      <asp:sqldatasource id="OrderSqlDataSource"  
        selectcommand="SELECT [OrderID], [UnitPrice], [Quantity], [UnitPrice]*[Quantity] As [Total] FROM [order details] WHERE [OrderID]=10248"
        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">
<script runat="server">
  
  ' Create a variable to store the order total.
  Private orderTotal As Decimal = 0.0

  Sub OrderGridView_RowCreated(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
    
    ' Retrieve the current row.
    Dim row As GridViewRow = e.Row
    
    ' Update the column total if the row being created is
    ' a footer row.
    If row.RowType = DataControlRowType.Footer Then
          
      ' Get the OrderTotalTotal Label control in the footer row.
      Dim total As Label = CType(e.Row.FindControl("OrderTotalLabel"), Label)
      
      ' Display the grand total of the order formatted as currency.
      If (Not total Is Nothing)
      
        total.Text = orderTotal.ToString("c")
      
      End If 
      
    End If
    
  End Sub
  
  Sub OrderGridView_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
    
    ' Retrieve the current row.
    Dim row As GridViewRow = e.Row
    
    ' Add the field value to the column total if the row being created is
    ' a data row.
    If row.RowType = DataControlRowType.DataRow Then
      
      ' Get the cell that contains the item total.
      Dim cell As TableCell = e.Row.Cells(2)
      
      ' Get the DataBoundLiteralControl control that contains the 
      ' data bound value.
      Dim boundControl As DataBoundLiteralControl = CType(cell.Controls(0), DataBoundLiteralControl)
      
      ' Remove the '$' character for the type converter to work properly.
      Dim itemTotal As String = boundControl.Text.Replace("$",  "")
      
      ' Add the total for an item (row) to the order total.
      orderTotal += Convert.ToDecimal(itemTotal)
      
    End If
    
  End Sub
  
</script>

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

      <!-- Populate the Columns collection declaratively. -->
      <!-- Create a custom TemplateField column that uses      -->
      <!-- two Label controls to display an author's first and -->
      <!-- last name in the same column.                       -->
      <asp:gridview id="OrderGridView" 
        datasourceid="OrderSqlDataSource" 
        autogeneratecolumns="False" 
        showfooter="true"
        onrowcreated="OrderGridView_RowCreated"
        onrowdatabound="OrderGridView_RowDataBound"   
        runat="server">
                
        <columns>
        
          <asp:boundfield datafield="UnitPrice"
            itemstyle-horizontalalign="Right"
            headertext="Unit Price" 
            dataformatstring="{0:c}"/>
                  
          <asp:boundfield datafield="Quantity"
            itemstyle-horizontalalign="Right"
            headertext="Quantity"/>
                           
          <asp:templatefield headertext="Total"
            itemstyle-horizontalalign="Right"
            footerstyle-horizontalalign="Right"
            footerstyle-backcolor="Blue"
            footerstyle-forecolor="White">
            <itemtemplate>
              <%#Eval("Total", "{0:c}") %>
            </itemtemplate>
            <footertemplate>
              <asp:label id="OrderTotalLabel"
                runat="server"/>
            </footertemplate>
          </asp:templatefield>
                
        </columns>
                
      </asp:gridview>
            
      <!-- This example uses Microsoft SQL Server and connects -->
      <!-- to the Northwind sample database.                   -->
      <asp:sqldatasource id="OrderSqlDataSource"  
        selectcommand="SELECT [OrderID], [UnitPrice], [Quantity], [UnitPrice]*[Quantity] As [Total] FROM [order details] WHERE [OrderID]=10248"
        connectionstring="server=localhost;database=northwind;integrated security=SSPI"
        runat="server">
      </asp:sqldatasource>
            
    </form>
  </body>
</html>

Remarques

Utilisez la RowType propriété pour déterminer le type de ligne que l’objet GridViewRow représente. Le tableau suivant répertorie les différentes valeurs de type de ligne à l’aide de l’énumération DataControlRowType .

Type de ligne Description
DataRow Ligne de données dans le GridView contrôle.
Footer Ligne du pied de page dans le GridView contrôle.
Header Ligne d’en-tête dans le GridView contrôle.
EmptyDataRow Ligne vide dans le GridView contrôle. La ligne vide s’affiche lorsque GridView le contrôle n’a pas d’enregistrements à afficher.
Pager Ligne de pagineur dans le GridView contrôle.
Separator Ligne de séparation dans le GridView contrôle.

Cette propriété est couramment utilisée pour déterminer le type d’une ligne avant d’effectuer une opération.

S’applique à

Voir aussi