strikeout text in an item in a list view

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I have a simple listview (in ASP.NET website using C#) with two columns - data and strike. If the value of strike is 'true', i want the contents of 'data' to strikeout. My listview code is as follows:

XML

<asp:ListView ID="ListView1" runat="server" DataKeyNames="FSID" DataSourceID="SqlDataSource1" GroupItemCount="3" OnItemDataBound="ListView1_ItemDataBound">

            <GroupTemplate>
                <tr id="itemPlaceholderContainer" runat="server">
                    <td id="itemPlaceholder" runat="server"></td>
                </tr>
            </GroupTemplate>

            <ItemTemplate>
                <td runat="server" style="">FSID:
                   <asp:Label ID="DataLabel" runat="server" Text='<%# Eval("Data") %>' />
                    <br />
                    <asp:Label ID="strikeLabel" runat="server" Text='<%# Eval("strike") %>' />
                    <br />
               </td>
            </ItemTemplate>

In code behind i have:

C#

protected void ListView1_ItemDataBound(object sender, ListViewItemEventArgs e)
    {
        string strike = e.Item.FindControl("StrikeLabel").ToString();
        if(strike == "true")
        {
            Label data = e.Item.FindControl("DataLabel") as Label;
            data.Attributes.Add("CssClass", "text-decoration:line-through; color:red;");
        }
    }

This does not seem to work, as i still get normal text in data filed

Kindly advise.

Thanks for your help

Posted 24-Sep-15 6:24am

Member 10235977

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Richard Deeming · Accepted Answer · 2015-09-24T06:38:00

HTML does not contain an attribute called CssClass.

ASP.NET controls contain a property called CssClass, which maps to the HTML attribute called class. This attribute contains a list of class names defined in your CSS file(s). The styles for those CSS classes will be applied to the element.

The value you're supplying is not a CSS class name; it is an inline style definition. Therefore, you need to use the style attribute:

C#

data.Attributes["style"] = "text-decoration:line-through; color:red;";

Alternatively, you could use the Style property:

C#

data.Style["text-decoration"] = "line-through";
data.Style["color"] = "red";

You'll also need to retrieve the text of the "StrikeLabel" control; calling .ToString() on it will only return the type name.

The text will most likely be "True", which is not the same value as "true", so you'll need to modify your test.

C#

Label strikeLabel = (Label)e.Item.FindControl("StrikeLabel");
string strike = (strikeLabel != null) ? strikeLabel.Text : string.Empty;
if (string.Equals(strike, "True", StringComparison.OrdinalIgnoreCase))
{
    ...
}