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GridViewRowCollection.GetEnumerator Method

Returns an enumerator that contains all GridViewRow objects in the GridViewRowCollection.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

public IEnumerator GetEnumerator()

Return Value

Type: System.Collections.IEnumerator
An System.Collections.IEnumerator implemented object that contains all GridViewRow objects in the GridViewRowCollection.

Implements

IEnumerable.GetEnumerator()

Use this method to get an enumerator that can be iterated through linearly to access each item in the GridViewRowCollection. To access the item at the current position in the enumerator, use the IEnumerator.Current property. Use the IEnumerator.MoveNext method to move to the next item in the collection. To move the enumerator to its initial position, use the IEnumerator.Reset method.

NoteNote

When you initially get the enumerator or use the IEnumerator.Reset method to move the enumerator to the first item in the collection, you must call the IEnumerator.MoveNext method. Otherwise, the item that is represented by the IEnumerator.Current property is undefined.

The following example demonstrates how to use the GetEnumerator method to retrieve an enumerator that contains the values from the collection. The enumerator is iterated through and the values of the first cell are displayed on the 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">

  void AuthorsGridView_RowCreated(Object sender, GridViewRowEventArgs e)
  {
    if (e.Row.RowType == DataControlRowType.Footer)
    {
      Message.Text = "The authors are:<br />";

      // Get the enumerator that contains the data rows in the 
      // GridView control.
      IEnumerator rowEnumerator = AuthorsGridView.Rows.GetEnumerator();

      // Iterate though the enumerator and display the value in the
      // first cell of the row.
      while(rowEnumerator.MoveNext())
      {
        GridViewRow row = (GridViewRow)rowEnumerator.Current;
        Message.Text += row.Cells[0].Text + "<br />";
      }
    }
  }

</script>

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

      <h3>GridViewRowCollection GetEnumerator Example</h3>

      <table>
        <tr>
          <td>
            <asp:gridview id="AuthorsGridView" 
              datasourceid="AuthorsSqlDataSource" 
              autogeneratecolumns="false"
              onrowcreated="AuthorsGridView_RowCreated"  
              runat="server"> 

              <columns>
                <asp:boundfield datafield="au_lname"
                  headertext="Last Name"/>
                <asp:boundfield datafield="au_fname"
                  headertext="First Name"/>
              </columns>

            </asp:gridview>
          </td>
          <td>
            <asp:label id="Message" 
              forecolor="Red"
              runat="server"/>
          </td>
        </tr>
      </table>

      <!-- This example uses Microsoft SQL Server and connects -->
      <!-- to the Pubs sample database.                        -->
      <asp:sqldatasource id="AuthorsSqlDataSource"  
        selectcommand="SELECT [au_lname], [au_fname] FROM [authors] WHERE [state]='CA'"
        connectionstring="server=localhost;database=pubs;integrated security=SSPI"
        runat="server">
      </asp:sqldatasource>

    </form>
  </body>
</html>

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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