Create n-Column Table (RepeatColumns) in ASP.Net Repeater using C# and VB.Net

Hi Sumeet,

Check this example. Now please take its reference and correct your code.

Database

I have made use of the following table tblFiles with the schema as follows.

You can download the database table SQL by clicking the download link below.

Download SQL file

I have already inserted few record in the table.

HTML

C#

<asp:Repeater ID="rptImages" runat="server" OnItemDataBound="rptImages_ItemDataBound">
    <HeaderTemplate>
        <table>
    </HeaderTemplate>
    <ItemTemplate>
        <%# (Container.ItemIndex) % 2 == 0 ? "<tr>" : string.Empty%>
        <td>
            <%# DataBinder.Eval(Container.DataItem, "Name") %>
            <br />
            <asp:ImageButton ID="ibImage" runat="server" />
        </td>
        <%# (Container.ItemIndex) % 2 == 2 ? "</tr>" : string.Empty%>
    </ItemTemplate>
    <FooterTemplate>
        </table>
    </FooterTemplate>
</asp:Repeater>
<hr />
<table>
    <tr>
        <asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="Repeater1_ItemDataBound">
            <ItemTemplate>
                <td>
                    <%# DataBinder.Eval(Container.DataItem, "Name") %>
                    <br />
                    <asp:ImageButton ID="ibImage" runat="server" />
                </td>
            </ItemTemplate>
            <SeparatorTemplate>
                </tr>
                <tr>
            </SeparatorTemplate>
        </asp:Repeater>
    </tr>
</table>

VB.Net

<asp:Repeater ID="rptImages" runat="server" OnItemDataBound="rptImages_ItemDataBound">
    <HeaderTemplate>
        <table>
    </HeaderTemplate>
    <ItemTemplate>
        <%#If(Container.ItemIndex Mod 2 = 0, "<tr>", String.Empty)%>
        <td>
            <%# DataBinder.Eval(Container.DataItem, "Name") %>
            <br />
            <asp:ImageButton ID="ibImage" runat="server" />
        </td>
        <%#If(Container.ItemIndex Mod 2 = 2, "<tr>", String.Empty)%>
    </ItemTemplate>
    <FooterTemplate>
        </table>
    </FooterTemplate>
</asp:Repeater>
<hr />
<table>
    <tr>
        <asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="Repeater1_ItemDataBound">
            <ItemTemplate>
                <td>
                    <%# DataBinder.Eval(Container.DataItem, "Name") %>
                    <br />
                    <asp:ImageButton ID="ibImage" runat="server" />
                </td>
            </ItemTemplate>
            <SeparatorTemplate>
                </tr>
                <tr>
            </SeparatorTemplate>
        </asp:Repeater>
    </tr>
</table>

Namespaces

C#

using System.Configuration;
using System.Data;
using System.Data.SqlClient;

VB.Net

Imports System.Configuration
Imports System.Data
Imports System.Data.SqlClient

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        BindRepeater();
    }
}

private void BindRepeater()
{
    string conString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    string query = "SELECT * FROM tblFiles WHERE ContentType = 'image/jpeg'";
    SqlCommand cmd = new SqlCommand(query);
    using (SqlConnection con = new SqlConnection(conString))
    {
        using (SqlDataAdapter sda = new SqlDataAdapter())
        {
            cmd.Connection = con;
            sda.SelectCommand = cmd;
            using (DataTable dt = new DataTable())
            {
                sda.Fill(dt);
                rptImages.DataSource = dt;
                rptImages.DataBind();
                Repeater1.DataSource = dt;
                Repeater1.DataBind();
            }
        }
    }
}

protected void rptImages_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
    {
        byte[] bytes = (byte[])(e.Item.DataItem as DataRowView).Row["Data"];
        string base64String = Convert.ToBase64String(bytes, 0, bytes.Length);
        (e.Item.FindControl("ibImage") as ImageButton).ImageUrl = "data:image/png;base64," + base64String;
    }
}

protected int i = 0;
protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Separator)
    {
        if ((++i % 2) != 0)
        {
            e.Item.Visible = false;
        }
    }

    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
    {
        byte[] bytes = (byte[])(e.Item.DataItem as DataRowView).Row["Data"];
        string base64String = Convert.ToBase64String(bytes, 0, bytes.Length);
        (e.Item.FindControl("ibImage") as ImageButton).ImageUrl = "data:image/png;base64," + base64String;
    }
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    If Not Me.IsPostBack Then
        BindRepeater()
    End If
End Sub

Private Sub BindRepeater()
    Dim conString As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
    Dim query As String = "SELECT * FROM tblFiles WHERE ContentType = 'image/jpeg'"
    Dim cmd As SqlCommand = New SqlCommand(query)
    Using con As SqlConnection = New SqlConnection(conString)
        Using sda As SqlDataAdapter = New SqlDataAdapter()
            cmd.Connection = con
            sda.SelectCommand = cmd
            Using dt As DataTable = New DataTable()
                sda.Fill(dt)
                rptImages.DataSource = dt
                rptImages.DataBind()
                Repeater1.DataSource = dt
                Repeater1.DataBind()
            End Using
        End Using
    End Using
End Sub

Protected Sub rptImages_ItemDataBound(ByVal sender As Object, ByVal e As RepeaterItemEventArgs)
    If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType = ListItemType.AlternatingItem Then
        Dim bytes As Byte() = CType((TryCast(e.Item.DataItem, DataRowView)).Row("Data"), Byte())
        Dim base64String As String = Convert.ToBase64String(bytes, 0, bytes.Length)
        TryCast(e.Item.FindControl("ibImage"), ImageButton).ImageUrl = "data:image/png;base64," & base64String
    End If
End Sub

Protected i As Integer = 0
Protected Sub Repeater1_ItemDataBound(ByVal sender As Object, ByVal e As RepeaterItemEventArgs)
    If e.Item.ItemType = ListItemType.Separator Then
        If (System.Threading.Interlocked.Increment(i) Mod 2) <> 0 Then
            e.Item.Visible = False
        End If
    End If
    If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType = ListItemType.AlternatingItem Then
        Dim bytes As Byte() = CType((TryCast(e.Item.DataItem, DataRowView)).Row("Data"), Byte())
        Dim base64String As String = Convert.ToBase64String(bytes, 0, bytes.Length)
        TryCast(e.Item.FindControl("ibImage"), ImageButton).ImageUrl = "data:image/png;base64," & base64String
    End If
End Sub

Screenshot

Note: I have used 2 column for the sample. So modify it with 4 column.