GridView.Rows Vlastnost

Definice

Získá kolekci GridViewRow objektů, které reprezentují datové řádky v GridView ovládacím prvku.Gets a collection of GridViewRow objects that represent the data rows in a GridView control.

public:
 virtual property System::Web::UI::WebControls::GridViewRowCollection ^ Rows { System::Web::UI::WebControls::GridViewRowCollection ^ get(); };
[System.ComponentModel.Browsable(false)]
public virtual System.Web.UI.WebControls.GridViewRowCollection Rows { get; }
[<System.ComponentModel.Browsable(false)>]
member this.Rows : System.Web.UI.WebControls.GridViewRowCollection
Public Overridable ReadOnly Property Rows As GridViewRowCollection

Hodnota vlastnosti

GridViewRowCollection

Obsahující GridViewRowCollection všechny řádky dat v GridView ovládacím prvku.A GridViewRowCollection that contains all the data rows in a GridView control.

Atributy

Příklady

Následující příklad ukazuje, jak použít Rows kolekci pro přístup k řádku upravovanému v GridView ovládacím prvku.The following example demonstrates how to use the Rows collection to access the row being edited in a GridView control. Po aktualizaci řádku se zobrazí zpráva s oznámením, že aktualizace byla úspěšná.After a row is updated, a message is displayed to indicate that the update was successful.


<%@ 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 CustomersGridView_RowCommand(Object sender, GridViewCommandEventArgs e)
  {
    
    // Clear the message label when the user enters edit mode.
    if (e.CommandName == "Edit")
    {
      Message.Text = "";
    }
    
  }

  void CustomersGridView_RowUpdated(Object sender, GridViewUpdatedEventArgs e)
    {
   
        // The update operation was successful. Retrieve the row being edited.
        int index = CustomersGridView.EditIndex;
        GridViewRow row = CustomersGridView.Rows[index];
        
        // Notify the user that the update was successful.
        Message.Text = "Updated record " + row.Cells[1].Text + ".";
    
    }

  void CustomersGridView_RowCancelingEdit(Object sender, GridViewCancelEditEventArgs e)
    {
   
        // The update operation was canceled. Display the appropriate message.
        Message.Text = "Update operation canceled.";
    
    }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>GridView Rows Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>GridView Rows Example</h3>
            
      <asp:label id="Message"
        forecolor="Red"
        runat="server"/>
                
      <br/>    
            
      <!-- The GridView control automatically sets the columns     -->
      <!-- specified in the datakeynames property as read-only.    -->
      <!-- No input controls are rendered for these columns in     -->
      <!-- edit mode.                                              -->
      <asp:gridview id="CustomersGridView"
        allowpaging="true" 
        datasourceid="CustomersSqlDataSource" 
        autogeneratecolumns="true"
        autogenerateeditbutton="true"
        datakeynames="CustomerID"
        onrowcommand="CustomersGridView_RowCommand"
        onrowupdated="CustomersGridView_RowUpdated"
        onrowcancelingedit="CustomersGridView_RowCancelingEdit"  
        runat="server">
      </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="CustomersSqlDataSource"  
        selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        updatecommand="Update Customers SET CompanyName=@CompanyName, Address=@Address, City=@City, PostalCode=@PostalCode, Country=@Country WHERE (CustomerID = @CustomerID)"
        deletecommand="Delete from Customers where CustomerID = @CustomerID"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
        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 CustomersGridView_RowCommand(ByVal sender As Object, ByVal e As GridViewCommandEventArgs)
    
    ' Clear the message label when the user enters edit mode.
    If e.CommandName = "Edit" Then
      Message.Text = ""
    End If
    
  End Sub
  
  Sub CustomersGridView_RowUpdated(ByVal sender As Object, ByVal e As GridViewUpdatedEventArgs)
   
    ' The update operation was successful. Retrieve the row being edited.
    Dim index As Integer = CustomersGridView.EditIndex
    Dim row As GridViewRow = CustomersGridView.Rows(index)
        
    ' Notify the user that the update was successful.
    Message.Text = "Updated record " & row.Cells(1).Text + "."
    
  End Sub

  Sub CustomersGridView_RowCancelingEdit(ByVal sender As Object, ByVal e As GridViewCancelEditEventArgs)
   
    ' The update operation was canceled. Display the appropriate message.
    Message.Text = "Update operation canceled."
    
  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>GridView Rows Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>GridView Rows Example</h3>
            
      <asp:label id="Message"
        forecolor="Red"
        runat="server"/>
                
      <br/>    
            
      <!-- The GridView control automatically sets the columns     -->
      <!-- specified in the datakeynames property as read-only.    -->
      <!-- No input controls are rendered for these columns in     -->
      <!-- edit mode.                                              -->
      <asp:gridview id="CustomersGridView"
        allowpaging="true" 
        datasourceid="CustomersSqlDataSource" 
        autogeneratecolumns="true"
        autogenerateeditbutton="true"
        datakeynames="CustomerID"
        onrowcommand="CustomersGridView_RowCommand"
        onrowupdated="CustomersGridView_RowUpdated"
        onrowcancelingedit="CustomersGridView_RowCancelingEdit"  
        runat="server">
      </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="CustomersSqlDataSource"  
        selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        updatecommand="Update Customers SET CompanyName=@CompanyName, Address=@Address, City=@City, PostalCode=@PostalCode, Country=@Country WHERE (CustomerID = @CustomerID)"
        deletecommand="Delete from Customers where CustomerID = @CustomerID"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
        runat="server">
      </asp:sqldatasource>
            
    </form>
  </body>
</html>

Poznámky

RowsVlastnost (kolekce) slouží k uložení datových řádků v GridView ovládacím prvku.The Rows property (collection) is used to store the data rows in a GridView control. GridViewOvládací prvek automaticky naplní Rows kolekci vytvořením GridViewRow objektu pro každý záznam ve zdroji dat a následným přidáním každého objektu do kolekce.The GridView control automatically populates the Rows collection by creating a GridViewRow object for each record in the data source and then adding each object to the collection. Tato vlastnost se běžně používá pro přístup ke konkrétnímu řádku v ovládacím prvku nebo k iteraci, přestože celá kolekce řádků.This property is commonly used to access a specific row in the control or to iterate though the entire collection of rows.

Poznámka

V kolekci jsou uloženy pouze řádky, jejichž RowType vlastnost je nastavena na hodnotu DataControlRowType.DataRow Rows .Only rows with their RowType property set to DataControlRowType.DataRow are stored in the Rows collection. GridViewRowObjekty, které představují záhlaví, zápatí a řádky stránkování, nejsou v kolekci zahrnuty.The GridViewRow objects that represent the header, footer, and pager rows are not included in the collection.

Platí pro

Viz také