GridView.RowCreated Event (System.Web.UI.WebControls)

RowCreated Event

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Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.NET Framework Class Library

GridView..::.RowCreated Event

Updated: November 2007

Occurs when a row is created in a GridView control.

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

Syntax

Visual Basic (Declaration)

Public Event RowCreated As GridViewRowEventHandler

Visual Basic (Usage)

Dim instance As GridView
Dim handler As GridViewRowEventHandler

AddHandler instance.RowCreated, handler

public event GridViewRowEventHandler RowCreated

Visual C++

public:
 event GridViewRowEventHandler^ RowCreated {
    void add (GridViewRowEventHandler^ value);
    void remove (GridViewRowEventHandler^ value);
}

/** @event */
public void add_RowCreated (GridViewRowEventHandler value)
/** @event */
public void remove_RowCreated (GridViewRowEventHandler value)

JScript

JScript does not support events.

ASP.NET

<asp:GridView OnRowCreated="GridViewRowEventHandler" />

Remarks

Before the GridView control can be rendered, a GridViewRow object must be created for each row in the control. The RowCreated event is raised when each row in the GridView control is created. This enables you to provide an event-handling method that performs a custom routine, such as adding custom content to a row, whenever this event occurs.

A GridViewRowEventArgs object is passed to the event-handling method, which enables you to access the properties of the row being created. To access a specific cell in the row, use the Cells property of the GridViewRowEventArgs object. You can determine which row type (header row, data row, and so on) is being created by using the RowType property.

For more information about handling events, see Consuming Events.

Examples

The following example demonstrates how to use the RowCreated event to store the index of the row being created in the CommandArgument property of a LinkButton control contained in the row. This enables you to determine the index of the row that contains the LinkButton control when the user clicked the button.

Visual Basic

<%@ 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)

    ' If multiple buttons are used in a GridView control, use the
    ' CommandName property to determine which button was clicked.
    If e.CommandName = "Add" Then

      ' Convert the row index stored in the CommandArgument
      ' property to an Integer.
      Dim index As Integer = Convert.ToInt32(e.CommandArgument)

      ' Retrieve the row that contains the button clicked 
      ' by the user from the Rows collection.
      Dim row As GridViewRow = CustomersGridView.Rows(index)

      ' Create a new ListItem object for the customer in the row.     
      Dim item As New ListItem()
      item.Text = Server.HtmlDecode(row.Cells(2).Text)

      ' If the customer is not already in the ListBox, add the ListItem 
      ' object to the Items collection of the ListBox control. 
      If Not CustomersListBox.Items.Contains(item) Then

        CustomersListBox.Items.Add(item)

      End If

    End If

  End Sub

  Sub CustomersGridView_RowCreated(ByVal sender As Object, ByVal e As GridViewRowEventArgs)

    ' The GridViewCommandEventArgs class does not contain a 
    ' property that indicates which row's command button was
    ' clicked. To identify which row's button was clicked, use 
    ' the button's CommandArgument property by setting it to the 
    ' row's index.
    If e.Row.RowType = DataControlRowType.DataRow Then

      ' Retrieve the LinkButton control from the first column.
      Dim addButton As LinkButton = CType(e.Row.Cells(0).Controls(0), LinkButton)

      ' Set the LinkButton's CommandArgument property with the
      ' row's index.
      addButton.CommandArgument = e.Row.RowIndex.ToString()

    End If

  End Sub

</script>

<html  >
  <head runat="server">
    <title>GridView RowCommand Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <h3>GridView RowCommand Example</h3>

      <table width="100%">         
        <tr>                
          <td style="width:50%">

            <asp:gridview id="CustomersGridView" 
              datasourceid="CustomersSource"
              allowpaging="true" 
              autogeneratecolumns="false"
              onrowcommand="CustomersGridView_RowCommand"
              onrowcreated="CustomersGridView_RowCreated"  
              runat="server">

              <columns>
                <asp:buttonfield buttontype="Link" 
                  commandname="Add" 
                  text="Add"/>
                <asp:boundfield datafield="CustomerID" 
                  headertext="Customer ID"/>
                <asp:boundfield datafield="CompanyName" 
                  headertext="Company Name"/> 
                <asp:boundfield datafield="City" 
                  headertext="City"/>         
              </columns>

            </asp:gridview>

          </td>

          <td style="vertical-align:top; width:50%">

            Customers: <br/>
            <asp:listbox id="CustomersListBox"
              runat="server"/> 

          </td>  
        </tr>      
      </table>

      <!-- 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="CustomersSource"
        selectcommand="Select [CustomerID], [CompanyName], [City] From [Customers]"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" 
        runat="server"/>

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

<%@ 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)
  {
    // If multiple buttons are used in a GridView control, use the
    // CommandName property to determine which button was clicked.
    if(e.CommandName=="Add")
    {
      // Convert the row index stored in the CommandArgument
      // property to an Integer.
      int index = Convert.ToInt32(e.CommandArgument);

      // Retrieve the row that contains the button clicked 
      // by the user from the Rows collection.
      GridViewRow row = CustomersGridView.Rows[index];

      // Create a new ListItem object for the customer in the row.     
      ListItem item = new ListItem();
      item.Text = Server.HtmlDecode(row.Cells[2].Text);

      // If the customer is not already in the ListBox, add the ListItem 
      // object to the Items collection of the ListBox control. 
      if (!CustomersListBox.Items.Contains(item))
      {
        CustomersListBox.Items.Add(item);
      }           
    }
  }

  void CustomersGridView_RowCreated(Object sender, GridViewRowEventArgs e)
  {

    // The GridViewCommandEventArgs class does not contain a 
    // property that indicates which row's command button was
    // clicked. To identify which row's button was clicked, use 
    // the button's CommandArgument property by setting it to the 
    // row's index.
    if(e.Row.RowType == DataControlRowType.DataRow)
    {
      // Retrieve the LinkButton control from the first column.
      LinkButton addButton = (LinkButton)e.Row.Cells[0].Controls[0];

      // Set the LinkButton's CommandArgument property with the
      // row's index.
      addButton.CommandArgument = e.Row.RowIndex.ToString();
    }

  }

</script>

<html  >
  <head runat="server">
    <title>GridView RowCommand Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <h3>GridView RowCommand Example</h3>

      <table width="100%">         
        <tr>                
          <td style="width:50%">

            <asp:gridview id="CustomersGridView" 
              datasourceid="CustomersSource"
              allowpaging="true" 
              autogeneratecolumns="false"
              onrowcommand="CustomersGridView_RowCommand"
              onrowcreated="CustomersGridView_RowCreated"  
              runat="server">

              <columns>
                <asp:buttonfield buttontype="Link" 
                  commandname="Add" 
                  text="Add"/>
                <asp:boundfield datafield="CustomerID" 
                  headertext="Customer ID"/>
                <asp:boundfield datafield="CompanyName" 
                  headertext="Company Name"/> 
                <asp:boundfield datafield="City" 
                  headertext="City"/>         
              </columns>

            </asp:gridview>

          </td>

          <td style="vertical-align:top; width:50%">

            Customers: <br/>
            <asp:listbox id="CustomersListBox"
              runat="server"/> 

          </td>  
        </tr>      
      </table>

      <!-- 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="CustomersSource"
        selectcommand="Select [CustomerID], [CompanyName], [City] From [Customers]"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" 
        runat="server"/>

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

Platforms

Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

Version Information