ASP.Net Repeater with multiple ItemTemplate using C# and VB.Net

I will get back soon.

Hi lokesh0443,

Refer below sample.

HTML

<asp:Repeater ID="ParentRepeater" runat="server" OnItemDataBound="ParentRepeater_ItemDataBound">
    <ItemTemplate>
        <%#DataBinder.Eval(Container.DataItem, "test1")%>
        <asp:Repeater ID="ChildRepeater1" runat="server">
            <ItemTemplate>
                <%#DataBinder.Eval(Container.DataItem, "test2")%>
            </ItemTemplate>
        </asp:Repeater>
        <asp:Repeater ID="ChildRepeater2" runat="server">
            <ItemTemplate>
                <%#DataBinder.Eval(Container.DataItem, "test3")%>
            </ItemTemplate>
        </asp:Repeater>
    </ItemTemplate>
</asp:Repeater>

Namespaces

C#

using System.Data;

VB.Net

Imports System.Data

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[] { new DataColumn("test1", typeof(string)), new DataColumn("test2", typeof(string)), new DataColumn("test3", typeof(string)) });
        dt.Rows.Add("Pen", "Pencil", "Marker");
        dt.Rows.Add("Highlighter", "Eraser", "Glue");
        ParentRepeater.DataSource = dt;
        ParentRepeater.DataBind();
    }
}

protected void ParentRepeater_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    RepeaterItem item = e.Item; if (item.ItemType == ListItemType.Item || item.ItemType == ListItemType.AlternatingItem)
    {
        Repeater ChildRepeater = (Repeater)item.FindControl("ChildRepeater2");
        Repeater ChildRepeater1 = (Repeater)item.FindControl("ChildRepeater1");
        DataRowView drv = (DataRowView)item.DataItem;
        ChildRepeater.DataSource = drv.DataView.ToTable();
        ChildRepeater.DataBind();
        ChildRepeater1.DataSource = drv.DataView.ToTable();
        ChildRepeater1.DataBind();
    }
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Dim dt As DataTable = New DataTable()
        dt.Columns.AddRange(New DataColumn() {New DataColumn("test1", GetType(String)), New DataColumn("test2", GetType(String)), New DataColumn("test3", GetType(String))})
        dt.Rows.Add("Pen", "Pencil", "Marker")
        dt.Rows.Add("Highlighter", "Eraser", "Glue")
        ParentRepeater.DataSource = dt
        ParentRepeater.DataBind()
    End If
End Sub

Protected Sub ParentRepeater_ItemDataBound(ByVal sender As Object, ByVal e As RepeaterItemEventArgs)
    Dim item As RepeaterItem = e.Item

    If item.ItemType = ListItemType.Item OrElse item.ItemType = ListItemType.AlternatingItem Then
        Dim ChildRepeater As Repeater = CType(item.FindControl("ChildRepeater2"), Repeater)
        Dim ChildRepeater1 As Repeater = CType(item.FindControl("ChildRepeater1"), Repeater)
        Dim drv As DataRowView = CType(item.DataItem, DataRowView)
        ChildRepeater.DataSource = drv.DataView.ToTable()
        ChildRepeater.DataBind()
        ChildRepeater1.DataSource = drv.DataView.ToTable()
        ChildRepeater1.DataBind()
    End If
End Sub

Screenshot