Disabled LinkButton inside ASP.Net Repeater based on condition using C# and VB.Net

Hi ramco1917,

Please refer below sample.

HTML

<asp:Repeater ID="rptData" runat="server" OnItemDataBound="rptData_ItemDataBound">
    <HeaderTemplate>
        <table>
            <tr>
                <td></td>
                <td>LeadNumber</td>
                <td>StudentName</td>
                <td>BookTitle</td>
                <td></td>
            </tr>
    </HeaderTemplate>
    <ItemTemplate>
        <tr>
            <td><asp:Literal ID="ltrlNum" Text="<%# Convert.ToString(Container.ItemIndex + 1) %>" runat="server"></asp:Literal></td>
            <td><asp:Literal ID="ltrlLeadNumber" runat="server" Text='<%# Eval("LeadNumber") %>'></asp:Literal></td>
            <td><asp:Literal ID="ltrlChildName" runat="server" Text='<%# Eval("StudentName") %>'></asp:Literal></td>
            <td><asp:Literal ID="ltrlBookTitle" runat="server" Text='<%# Eval("BookTitle") %>'></asp:Literal></td>
            <td class="text-center">
                <asp:LinkButton ID="lnkUpdateStatus" class="text-primary-600" runat="server">Update Status</asp:LinkButton></td>
        </tr>
    </ItemTemplate>
    <FooterTemplate>
        </table>
    </FooterTemplate>
</asp:Repeater>

Namespace

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("LeadNumber"),
            new DataColumn("StudentName"),
            new DataColumn("BookTitle"),
            new DataColumn("Status")});
        dt.Rows.Add("1546218144", "Romero", "Cover", "Returned");
        dt.Rows.Add("8468942567", "WolaZaja", "TitlePage", "Good");
        dt.Rows.Add("2310598408", "Jaime", "DedicationPage", "Lost");
        dt.Rows.Add("9801233658", "Owner", "Glossary", "Ok");
        rptData.DataSource = dt;
        rptData.DataBind();
    }
}

protected void rptData_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
    {
        if ((e.Item.DataItem as DataRowView)["Status"].ToString().ToUpper() == "RETURNED" ||
            (e.Item.DataItem as DataRowView)["Status"].ToString().ToUpper() == "LOST")
        {
            (e.Item.FindControl("lnkUpdateStatus") as LinkButton).Enabled = false;
        }
    }
}

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("LeadNumber"), New DataColumn("StudentName"), New DataColumn("BookTitle"), New DataColumn("Status")})
        dt.Rows.Add("1546218144", "Romero", "Cover", "Returned")
        dt.Rows.Add("8468942567", "WolaZaja", "TitlePage", "Good")
        dt.Rows.Add("2310598408", "Jaime", "DedicationPage", "Lost")
        dt.Rows.Add("9801233658", "Owner", "Glossary", "Ok")
        rptData.DataSource = dt
        rptData.DataBind()
    End If
End Sub

Protected Sub rptData_ItemDataBound(ByVal sender As Object, ByVal e As RepeaterItemEventArgs)
    If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType = ListItemType.AlternatingItem Then
        If TryCast(e.Item.DataItem, DataRowView)("Status").ToString().ToUpper() = "RETURNED" OrElse
            TryCast(e.Item.DataItem, DataRowView)("Status").ToString().ToUpper() = "LOST" Then
            TryCast(e.Item.FindControl("lnkUpdateStatus"), LinkButton).Enabled = False
        End If
    End If
End Sub

Screenshot