Apply CSS for each row in DataList dynamically using C# in ASP.Net

Hi iammann,

I have created sample code which fullfill requirement.

HTML

<div>
    <asp:DataList ID="dlplot" runat="server" OnItemDataBound="dlplot_ItemDataBound">
        <HeaderTemplate>
            <table style="border-width: 1px; border-color: black; border-style: solid">
                <tr>
                    <th>
                    </th>
                    <th>
                        Plot No
                        <hr />
                    </th>
                </tr>
        </HeaderTemplate>
        <ItemTemplate>
            <tr>
                <td>
                    <asp:Label ID="lblStatus" Text='<%#Eval("Status")%>' Visible="false" runat="server" />
                </td>
                <td>
                    <asp:Label ID="lblPlot" Text='<%#Eval("PlotNo")%>' runat="server" />
                </td>
            </tr>
        </ItemTemplate>
        <FooterTemplate>
            </table>
        </FooterTemplate>
    </asp:DataList>
</div>
<div>
    <style type="text/css">
        .hold
        {
            color: green;
            font: white;
        }
            
        .available
        {
            color: blue;
            font: white;
        }
            
        .booked
        {
            color: red;
            font: white;
        }
    </style>
</div>

C#

protected void Page_Load(object sender, EventArgs e)
{
    DataTable dt = new DataTable();
    dt.Columns.Add("PlotNo", typeof(string));
    dt.Columns.Add("Status", typeof(int));
    dt.Rows.Add("Plot2044", 0);
    dt.Rows.Add("Plot241", 1);
    dt.Rows.Add("Plot989", 2);
    dt.Rows.Add("Plot332", 2);
    dt.Rows.Add("Plot992", 1);
    dlplot.DataSource = dt;
    dlplot.DataBind();
}

protected void dlplot_ItemDataBound(object sender, DataListItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
    {
        string Status = (e.Item.FindControl("lblStatus") as Label).Text;
        switch (Status)
        {
            case "0":
                (e.Item.FindControl("lblPlot") as Label).CssClass = "hold";
                break;

            case "1":
                (e.Item.FindControl("lblPlot") as Label).CssClass = "available";
                break;

            case "2":
                (e.Item.FindControl("lblPlot") as Label).CssClass = "booked";
                break;
        }
    }
}

Screenshot

I hope works for you.