GridViewRowCollection Class
Definition
Important
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Represents a collection of GridViewRow objects in a GridView control.
public ref class GridViewRowCollection : System::Collections::ICollectionpublic class GridViewRowCollection : System.Collections.ICollectiontype GridViewRowCollection = class
interface ICollection
interface IEnumerablePublic Class GridViewRowCollection
Implements ICollection- Inheritance
-
GridViewRowCollection
- Implements
Examples
The following example demonstrates how to iterate through the Rows collection of a GridView control and display the values of a column 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)
{
// Get the number of items in the Rows collection.
int count = AuthorsGridView.Rows.Count;
// If the GridView control contains any records, display
// the last name of each author in the GridView control.
if (count > 0)
{
Message.Text = "The authors are:<br />";
foreach (GridViewRow row in AuthorsGridView.Rows)
{
Message.Text += row.Cells[0].Text + "<br />";
}
}
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>GridViewRowCollection Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>GridViewRowCollection 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>
<%@ 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_RowCreated(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
If e.Row.RowType = DataControlRowType.Footer Then
' Get the number of items in the Rows collection.
Dim count As Integer = AuthorsGridView.Rows.Count
' If the GridView control contains any records, display
' the last name of each author in the GridView control.
If count > 0 Then
Message.Text = "The authors are:<br />"
Dim row As GridViewRow
For Each row In AuthorsGridView.Rows
Message.Text &= row.Cells(0).Text & "<br />"
Next
End If
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>GridViewRowCollection Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>GridViewRowCollection 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>
Remarks
The GridViewRowCollection class is used to store and manage a collection of GridViewRow objects in a GridView control. Each row in a GridView control is represented by a GridViewRow object. The GridView control stores all of its data rows in the Rows collection.
The GridViewRowCollection class supports several ways to access the items in the collection:
Use the Item[] indexer to directly retrieve a GridViewRow object at a specific zero-based index.
Use the GetEnumerator method to retrieve an enumerator that can be used to iterate through the collection.
Use the CopyTo method to copy the items in the collection into an System.Array object, which can then be used to access the items in the collection.
To determine the total number of items in the collection, use the Count property
Constructors
| GridViewRowCollection(ArrayList) |
Initializes a new instance of the GridViewRowCollection class using the specified ArrayList object. |
Properties
| Count |
Gets the number of items in the GridViewRowCollection object. |
| IsReadOnly |
Gets a value indicating whether the rows in the GridViewRowCollection object can be modified. |
| IsSynchronized |
Gets a value indicating whether the GridViewRowCollection object is synchronized (thread-safe). |
| Item[Int32] |
Gets the GridViewRow object at the specified index. |
| SyncRoot |
Gets the object used to synchronize access to the collection. |
Methods
| CopyTo(GridViewRow[], Int32) |
Copies all the items from this GridViewRowCollection to the specified Array object, starting at the specified index in the Array object. |
| Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
| GetEnumerator() |
Returns an enumerator that contains all GridViewRow objects in the GridViewRowCollection. |
| GetHashCode() |
Serves as the default hash function. (Inherited from Object) |
| GetType() |
Gets the Type of the current instance. (Inherited from Object) |
| MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
| ToString() |
Returns a string that represents the current object. (Inherited from Object) |
Explicit Interface Implementations
| ICollection.CopyTo(Array, Int32) |
For a description of this member, see CopyTo(Array, Int32). |
Extension Methods
| Cast<TResult>(IEnumerable) |
Casts the elements of an IEnumerable to the specified type. |
| OfType<TResult>(IEnumerable) |
Filters the elements of an IEnumerable based on a specified type. |
| AsParallel(IEnumerable) |
Enables parallelization of a query. |
| AsQueryable(IEnumerable) |
Converts an IEnumerable to an IQueryable. |
