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DataControlField.Visible Property

Gets or sets a value indicating whether a data control field is rendered.

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

public bool Visible { get; set; }

Property Value

Type: System.Boolean
true if the DataControlField is rendered; otherwise, false. The default value is true.

Use the Visible property to show or hide DataControlField objects in a data-bound control.

If the the Visible property is false, the data values are not displayed and do not make a round-trip to the client. If you want to round-trip the data for a field that is not visible, add the field name to the DataKeyNames property of the data-bound control.

The following code example demonstrates how to use BoundField and ButtonField objects, which are derived from DataControlField, to display rows in a DetailsView control. The Visible property of the BoundField object that displays the EmployeeID column is set to false, and the column is not rendered by the DetailsView control.

<%@ page language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
  <form id="form1" runat="server">
    <asp:detailsview
      id="DetailsView1"
      runat="server"
      allowpaging="True"
      datasourceid="SqlDataSource1"
      autogeneraterows="False"
      width="312px"
      height="152px">
        <fields>
          <asp:boundfield
            visible="False"
            sortexpression="EmployeeID"
            datafield="EmployeeID">
          </asp:boundfield>

          <asp:boundfield
            sortexpression="LastName"
            datafield="LastName"
            headertext="LastName">
          </asp:boundfield>

          <asp:boundfield
            sortexpression="FirstName"
            datafield="FirstName"
            headertext="FirstName">
          </asp:boundfield>

          <asp:boundfield
            sortexpression="Title"
            datafield="Title"
            headertext="Title">
          </asp:boundfield>

          <asp:buttonfield text="Button">
            <controlstyle font-bold="True" forecolor="Red" />
          </asp:buttonfield>
        </fields>
    </asp:detailsview>

    <asp:sqldatasource
      id="SqlDataSource1"
      runat="server"
      selectcommand="SELECT * FROM Employees"
      connectionstring="<%$ ConnectionStrings:MyNorthwind%>">
    </asp:sqldatasource>

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

.NET Framework

Supported in: 4.6, 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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