Gridview OnItemDataBound Event Example

In this article we will cover how to bind gridview using Datatable and access Datatable Row inside Gridview OnItemDataBound Event.

We will also cover how to FindControl like panel, hidden field and apply if else condition and assign value inside Gridview OnItemDataBound Event.

<asp:Repeater runat="server" ID="rptblogs" OnItemDataBound="rptblogs_ItemDataBound">
    <ItemTemplate>
        <h1><%#Eval("Name") %></h1>
        <p><%#Eval("Description") %></p>
 
        <asp:Panel ID="pnlImage" runat="server" Visible="false">
            <img src="<%#Eval("BannerImage") %>" />
        </asp:Panel>
 
        <asp:Panel ID="pnlVideo" runat="server" Visible="false">
            <iframe src="<%#Eval("VideoLink") %>"></iframe>
        </asp:Panel>
 
        <asp:HiddenField ID="hdn_blogid" runat="server" />
    </ItemTemplate>
</asp:Repeater>

using (SqlConnection con = new SqlConnection("connection_string"))
{
    using (SqlCommand cmd = new SqlCommand("select * from blogs", con))
    {
        cmd.CommandType = CommandType.Text;
        using (SqlDataAdapter sda = new SqlDataAdapter(cmd))
        {
            using (DataTable dt = new DataTable())
            {
                sda.Fill(dt);
                rptblogs.DataSource = dt;
                rptblogs.DataBind();
            }
        }
    }
}

protected void rptblogs_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
    {
        RepeaterItem item = e.Item;
 
        DataRowView drv = e.Item.DataItem as DataRowView;
 
        if (drv.Row["type"].ToString() == "image")
            (item.FindControl("pnlImage") as Panel).Visible = true;
        else
            (item.FindControl("pnlVideo") as Panel).Visible = true;
 
        (item.FindControl("hdn_blogid") as HiddenField).Value = drv.Row["Blog_ID"].ToString();
    }
}