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DataGrid.ItemStyle Property

Gets the style properties of the items in the DataGrid control.

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

[PersistenceModeAttribute(PersistenceMode.InnerProperty)]
public virtual TableItemStyle ItemStyle { get; }

Property Value

Type: System.Web.UI.WebControls.TableItemStyle
A TableItemStyle object that contains the style properties of the items in the DataGrid control. The default value is an empty TableItemStyle object.

Use this property to provide a custom style for the items of the DataGrid control. Common style attributes that can be adjusted include forecolor, backcolor, font, and content alignment within the cell. Providing a different style enhances the appearance of the DataGrid control.

Item style properties in the DataGrid control are inherited from one item style property to another through a hierarchy. Item style properties set lower in the hierarchy are inherited by item style properties higher in the hierarchy. For example, if you specify a red font for the ItemStyle property, all other item style properties in the DataGrid control will also have a red font. This allows you to provide a common appearance for the control by setting a single item style property. You can override the inherited style settings for an item style property that is higher in the hierarchy by setting its style properties. For example, you can specify a blue font for the AlternatingItemStyle property, overriding the red font specified in the ItemStyle property. The following table lists the hierarchy order from highest to lowest.

Precedence

Style Property

1

EditItemStyle

2

SelectedItemStyle

3

AlternatingItemStyle

4

ItemStyle

5

ControlStyle

To specify a custom style for the items of the DataGrid control, place the <ItemStyle> tags between the opening and closing tags of the DataGrid control. You can then list the style attributes within the opening <ItemStyle> tag.

You can also use the AlternatingItemStyle property to provide a different appearance for the alternating items in the DataGrid control.

The following code example demonstrates how to use the ItemStyle property to set the background color of the items in the DataGrid to yellow.

<%@ Page Language="C#" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>

 <!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" >
 <script language="C#" runat="server">

    DataTable Cart;
    DataView CartView;

    ICollection CreateDataSource() 
    {
       DataTable dt = new DataTable();
       DataRow dr;

       dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32)));
       dt.Columns.Add(new DataColumn("StringValue", typeof(string)));
       dt.Columns.Add(new DataColumn("CurrencyValue", typeof(double)));

       for (int i = 0; i < 10; i++) 
       {
          dr = dt.NewRow();

          dr[0] = i;
          dr[1] = "Item " + i.ToString();
          dr[2] = 1.23 * (i+1);

          dt.Rows.Add(dr);
       }

       DataView dv = new DataView(dt);
       return dv;
    }

    void Page_Load(Object sender, EventArgs e) 
    {

       if (!IsPostBack) 
       {
          // Load this data only once.
          ItemsGrid.DataSource= CreateDataSource();
          ItemsGrid.DataBind();
       }

    }

 </script>

 <head runat="server">
    <title>DataGrid Example</title>
</head>
<body>

    <form id="form1" runat="server">

       <h3>DataGrid Example</h3>

       <asp:DataGrid id="ItemsGrid" runat="server"
            BorderColor="black"
            BorderWidth="1"
            CellPadding="10"
            ShowFooter="true"
            AutoGenerateColumns="true">

          <HeaderStyle BackColor="#00aaaa">
          </HeaderStyle>

          <ItemStyle BackColor="yellow">
          </ItemStyle>

          <FooterStyle BackColor="#00aaaa">
          </FooterStyle>

       </asp:DataGrid>

    </form>

 </body>
 </html>

<%@ Page Language="C#" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>

<!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" >
   <script runat="server">

      ICollection CreateDataSource() 
      {

         // Create sample data for the DataGrid control.
         DataTable dt = new DataTable();
         DataRow dr;

         // Define the columns of the table.
         dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32)));
         dt.Columns.Add(new DataColumn("StringValue", typeof(string)));
         dt.Columns.Add(new DataColumn("CurrencyValue", typeof(double)));

         // Populate the table with sample values.
         for (int i = 0; i < 5; i++) 
         {
            dr = dt.NewRow();

            dr[0] = i;
            dr[1] = "Item " + i.ToString();
            dr[2] = 1.23 * (i + 1);

            dt.Rows.Add(dr);
         }

         DataView dv = new DataView(dt);
         return dv;
      }

      void Page_Load(Object sender, EventArgs e) 
      {

         // Load sample data only once, when the page is first loaded.
         if (!IsPostBack) 
         {
            ItemsGrid.DataSource = CreateDataSource();
            ItemsGrid.DataBind();
         }

      }

      void Selection_Change(Object sender, EventArgs e)
      {

         // Set the background color for the items and alternating items in
         // the DataGrid control. Notice that the ItemStyle property affects
         // the even-numbered items, while the AlternatingItemStyle property 
         // affects the odd-numbered items.
         ItemsGrid.ItemStyle.BackColor = 
             System.Drawing.Color.FromName(ItemBackColorList.SelectedItem.Value);
         ItemsGrid.AlternatingItemStyle.BackColor = 
             System.Drawing.Color.FromName(AltItemBackColorList.SelectedItem.Value);

      }

   </script>

<head runat="server">
    <title>DataGrid ItemStyle and AlternatingItemStyle Example</title>
</head>
<body>

   <form id="form1" runat="server">

      <h3>DataGrid ItemStyle and AlternatingItemStyle Example</h3>

      Select background colors for the items and alternating items.

      <br /><br />

      <b>Product List</b>

      <asp:DataGrid id="ItemsGrid"
           BorderColor="black"
           BorderWidth="1"
           CellPadding="3"
           AutoGenerateColumns="False"
           runat="server">

         <HeaderStyle BackColor="#00aaaa">
         </HeaderStyle>

         <ItemStyle BackColor="White">
         </ItemStyle>

         <AlternatingItemStyle BackColor="White">
         </AlternatingItemStyle>

         <Columns>

            <asp:BoundColumn DataField="IntegerValue" 
                 HeaderText="Item"/>

            <asp:BoundColumn DataField="StringValue" 
                 HeaderText="Description"/>

            <asp:BoundColumn DataField="CurrencyValue" 
                 HeaderText="Price"
                 DataFormatString="{0:c}">

               <ItemStyle HorizontalAlign="Right">
               </ItemStyle>

            </asp:BoundColumn>

         </Columns> 

      </asp:DataGrid>

      <hr />

      <table cellpadding="5">

         <tr>

            <td>

               Item BackColor:

            </td>

            <td>

               Alternating item BackColor:

            </td>

         </tr>

         <tr>

            <td>

               <asp:DropDownList id="ItemBackColorList"
                    AutoPostBack="True"
                    OnSelectedIndexChanged="Selection_Change"
                    runat="server">

                  <asp:ListItem Selected="True" Value="White"> White </asp:ListItem>
                  <asp:ListItem Value="Silver"> Silver </asp:ListItem>
                  <asp:ListItem Value="DarkGray"> Dark Gray </asp:ListItem>
                  <asp:ListItem Value="Khaki"> Khaki </asp:ListItem>
                  <asp:ListItem Value="DarkKhaki"> Dark Khaki </asp:ListItem>

               </asp:DropDownList>

            </td>

            <td>

               <asp:DropDownList id="AltItemBackColorList"
                    AutoPostBack="True"
                    OnSelectedIndexChanged="Selection_Change"
                    runat="server">

                  <asp:ListItem Selected="True" Value="White"> White </asp:ListItem>
                  <asp:ListItem Value="Silver"> Silver </asp:ListItem>
                  <asp:ListItem Value="DarkGray"> Dark Gray </asp:ListItem>
                  <asp:ListItem Value="Khaki"> Khaki </asp:ListItem>
                  <asp:ListItem Value="DarkKhaki"> Dark Khaki </asp:ListItem>

               </asp:DropDownList>

            </td>

         </tr>

      </table>

   </form>

</body>
</html>

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

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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