Show update progress on GridView LinkButton Click using C# and VB.Net in ASP.Net

Hi comunidadmexi...,

Use Button control insted of LinkButton and set css to style Button look as LinkButton.

Refer below sample.

HTML

<asp:ScriptManager runat="server" />
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="Name" />
        <asp:TemplateField HeaderText="" ItemStyle-HorizontalAlign="Center">
            <ItemTemplate>
                <asp:HiddenField ID="hfCountry" runat="server" Value='<%# Eval("Country") %>' />
                <asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="UpdatePanel1">
                    <ProgressTemplate>
                        <div class="modal">
                            <div class="center">
                                <img alt="" src="progress.gif" />
                            </div>
                        </div>
                    </ProgressTemplate>
                </asp:UpdateProgress>
                <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
                    <Triggers>
                        <asp:AsyncPostBackTrigger ControlID="Link" EventName="Click" />
                    </Triggers>
                    <ContentTemplate>
                        <asp:Button ID="Link" runat="server" Text="Download" OnClick="OnDownload" CssClass="buttonLink" />
                    </ContentTemplate>
                </asp:UpdatePanel>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>
<style type="text/css">
    body {
        margin: 0;
        padding: 0;
        font-family: Arial;
    }

    .modal {
        position: fixed;
        left: 0;
        z-index: 999;
        height: 100%;
        width: 100%;
        top: 0;
        background-color: Black;
        filter: alpha(opacity=60);
        opacity: 0.6;
        -moz-opacity: 0.8;
    }

    .center {
        z-index: 1000;
        margin: 30px auto;
        padding: 10px;
        width: 130px;
        background-color: White;
        border-radius: 10px;
        filter: alpha(opacity=100);
        opacity: 1;
        -moz-opacity: 1;
    }

        .center img {
            height: 128px;
            width: 128px;
        }

    .buttonLink {
        background: none !important;
        border: none;
        padding: 0 !important;
        font-family: arial, sans-serif;
        color: #069;
        text-decoration: underline;
        cursor: pointer;
    }
</style>

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        System.Data.DataTable dt = new System.Data.DataTable();
        dt.Columns.AddRange(new System.Data.DataColumn[3]
        {
            new System.Data.DataColumn("Id"),
            new System.Data.DataColumn("Name"),
            new System.Data.DataColumn("Country")
        });
        dt.Rows.Add(1, "John Hammond", "United States");
        dt.Rows.Add(2, "Mudassar Khan", "India");
        dt.Rows.Add(3, "Suzanne Mathews", "France");
        dt.Rows.Add(4, "Robert Schidner", "Russia");
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}

protected void OnDownload(object sender, EventArgs e)
{
    Button btn = (Button)sender;
    GridViewRow row = btn.NamingContainer as GridViewRow;

    string ese = (row.FindControl("hfCountry") as HiddenField).Value;

    if (!string.IsNullOrEmpty(ddl.SelectedValue))
    {
        Response.Redirect("xls.aspx?e=" + ese.ToString() + "&a=" + ddl.SelectedValue);
    }
    else
    {
        Response.Redirect("xls.aspx?e=" + ese.ToString());
    }
}

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 System.Data.DataTable = New System.Data.DataTable()
        dt.Columns.AddRange(New System.Data.DataColumn(2) {
                            New System.Data.DataColumn("Id"),
                            New System.Data.DataColumn("Name"),
                            New System.Data.DataColumn("Country")})
        dt.Rows.Add(1, "John Hammond", "United States")
        dt.Rows.Add(2, "Mudassar Khan", "India")
        dt.Rows.Add(3, "Suzanne Mathews", "France")
        dt.Rows.Add(4, "Robert Schidner", "Russia")
        GridView1.DataSource = dt
        GridView1.DataBind()
    End If
End Sub

Protected Sub OnDownload(ByVal sender As Object, ByVal e As EventArgs)
    Dim btn As Button = CType(sender, Button)
    Dim row As GridViewRow = TryCast(btn.NamingContainer, GridViewRow)
    Dim ese As String = (TryCast(row.FindControl("hfCountry"), HiddenField)).Value

    If Not String.IsNullOrEmpty(ddl.SelectedValue) Then
        Response.Redirect("xls.aspx?e=" & ese.ToString() & "&a=" & ddl.SelectedValue)
    Else
        Response.Redirect("xls.aspx?e=" & ese.ToString())
    End If
End Sub