Data filtering in GridView not working with ModalpopupExtender due to validation control using VB.Net in ASP.Net

Hi NoorAhmed,

Will you please explain in more detail in your requirement?

Hi Indresh,

I have GridView , as is clear in the site I attached above..

When I filter the data does not work ..

When the pop-up window Delete associated code the filter works !

Note that the pop-up window in Link Bouton Select in GridView !

The code here:

Training.aspx

<div id="container">
    <asp:UpdatePanel runat="server" ID="UpdatePanel1" UpdateMode="Conditional">
        <ContentTemplate>
            <div id="MainSchedule" style="width: initial; font-size: 14px; font-family: 'Lato', sans-serif;
                font-weight: 400; padding-bottom: 10%; margin: 1% auto;">
                <div class="row">
                    <div class="container">
                        <div id="Filter" class="box1" style="height: auto; padding-bottom: 6%;">
                            <div id="FilterDropDown" style="margin: 40px auto; padding-left: 5px;">
                                <div class="col-md-3" style="width: 20%;">
                                    <asp:DropDownList ID="DropDownListCategory" runat="server" CssClass="dropFilter"
                                        AutoPostBack="true" Style="background-color: #fff; color: brown; border-color: #C8C9CB;
                                        height: 30px; width: 220px; padding-left: 5px; margin-bottom: 5px;">
                                    </asp:DropDownList>
                                </div>
                                <div class="col-md-3" style="width: 20%;">
                                    <asp:DropDownList ID="DropDownListCity" runat="server" CssClass="dropFilter" AutoPostBack="true"
                                        Style="background-color: #fff; color: brown; border-color: #C8C9CB; height: 30px;
                                        width: 220px; padding-left: 5px; margin-bottom: 5px;">
                                    </asp:DropDownList>
                                </div>
                                <div class="col-md-3" style="width: 20%;">
                                    <asp:DropDownList ID="DropDownListField" runat="server" CssClass="dropFilter" AutoPostBack="true"
                                        Style="background-color: #fff; color: brown; border-color: #C8C9CB; height: 30px;
                                        width: 220px; padding-left: 5px; margin-bottom: 5px;">
                                    </asp:DropDownList>
                                </div>
                                <div class="col-md-3" style="width: 20%;">
                                    <asp:DropDownList ID="DropDownListMonths" runat="server" CssClass="dropFilter" AutoPostBack="true"
                                        Style="background-color: #fff; color: brown; border-color: #C8C9CB; height: 30px;
                                        width: 220px; padding-left: 5px; margin-bottom: 15px;">
                                    </asp:DropDownList>
                                </div>
                                <div class="col-md-3" style="width: 20%;">
                                    <div style="float: left; margin: 0px 0px 30px 50px;">
                                        <asp:Button ID="btnGo" UseSubmitBehavior="false" runat="server" Text="Find" AutoPostBack="true"
                                            class="btn btn-danger" Width="75px" Height="32px"></asp:Button>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
                <div class="row">
                    <div class="container">
                        <div style="text-align: center; margin-bottom: 10px; font-size: 20px; color: brown;">
                            <asp:Label ID="lblmsg" runat="server"></asp:Label></div>
                        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" OnSelectedIndexChanged="OnSelectedIndexChanged"
                            CssClass="footable" Style="width: 100%; text-align: center;">
                            <Columns>
                                <asp:TemplateField HeaderText="Course Title" ItemStyle-Width="260">
                                    <ItemTemplate>
                                        <div data-class="expand" style="float: left; padding-left: 10px;">
                                            <asp:Label ID="CourseLogo" runat="server" Text='<%# Eval("CourseLogo")%>'></asp:Label>
                                            <asp:Label ID="lblEnglishName" runat="server" Text='<%# Eval("EnglishName")%>' Style="margin-top: 15px;
                                                float: left;"></asp:Label>
                                        </div>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="City-Country" ItemStyle-Width="150">
                                    <ItemTemplate>
                                        <asp:Label ID="lblCountry" data-class="hide" runat="server" Text='<%# Eval("CityCountry")%>'></asp:Label>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="Start Course" ItemStyle-Width="180">
                                    <ItemTemplate>
                                        <asp:Label ID="lblStartCours" data-class="hide" runat="server" Text='<%# Eval("StartCourse")%>'></asp:Label>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="End Course" ItemStyle-Width="180">
                                    <ItemTemplate>
                                        <asp:Label ID="lblEndCourse" runat="server" data-class="hide" Text='<%# Eval("EndCourse")%>'></asp:Label>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="Days" ItemStyle-Width="50">
                                    <ItemTemplate>
                                        <asp:Label ID="lblDays" runat="server" data-class="hide" Text='<%# Eval("Days")%>'></asp:Label>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:ButtonField HeaderText="Register" Text="Select" ItemStyle-Width="100" CommandName="Select" />
                            </Columns>
                        </asp:GridView>
                        <asp:LinkButton Text="" ID="lnkFake" runat="server" />
                        <cc1:modalpopupextender id="mpe" runat="server" popupcontrolid="pnlPopup" targetcontrolid="lnkFake"
                            cancelcontrolid="btnClose" backgroundcssclass="modalBackground">
                        </cc1:modalpopupextender>
                        <asp:Panel ID="pnlPopup" runat="server" Class="modalPopup" Style="display: none">
                            <div class="footer" align="right" style="float: right;">
                                <asp:Button ID="btnClose" runat="server" UseSubmitBehavior="false" Text="x" Style="margin: 2px;
                                    font-size: 22px; color: white; background: none; border: none; border-color: none;
                                    border-radius: 0px;" />
                            </div>
                            <div class="login">
                                <div class="login-header">
                                    <p style="font-size: 30px; font-family: 'Lato', sans-serif; display: block; border-bottom: 1px solid rgba(255, 255, 255, 0.3);
                                        margin: 0 0 0.1em 0; padding-bottom: 20px;">
                                        CONTACT US
                                    </p>
                                    <p style="font-family: 'Lato', sans-serif; font-size: 1.25em; margin: 1em 0 0.4em 0;">
                                        Fill out the form below to complete register!</p>
                                </div>
                                <div class="login-form">
                                    <p class="left">
                                        <asp:Label ID="Label1" runat="server" Text="Full Name" CssClass="login-label"></asp:Label>
                                        <asp:TextBox ID="TextBoxName" runat="server" placeholder="Your Name" class="input"></asp:TextBox>
                                        <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="*"
                                            ControlToValidate="TextBoxName"></asp:RequiredFieldValidator>
                                    </p>
                                    <p style="float: right;">
                                        <asp:Label ID="Label2" runat="server" Text="Email" CssClass="login-label"></asp:Label>
                                        <asp:TextBox ID="TextBoxEmail" runat="server" placeholder="Example@gmail.com" class="input"></asp:TextBox>
                                        <asp:RegularExpressionValidator ID="valRegEx" runat="server" ControlToValidate="TextBoxEmail"
                                            ValidationExpression=".*@.*\..*" ErrorMessage="*Invalid Email address." Display="dynamic">
                                        </asp:RegularExpressionValidator>
                                        <asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ErrorMessage="*"
                                            ControlToValidate="TextBoxEmail"></asp:RequiredFieldValidator>
                                    </p>
                                    <p class="left">
                                        <asp:Label ID="Label3" runat="server" Text="Country" CssClass="login-label"></asp:Label>
                                        <asp:TextBox ID="TextBoxCityName" runat="server" placeholder="Your Country" class="input"></asp:TextBox>
                                        <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="*"
                                            ControlToValidate="TextBoxCityName"></asp:RequiredFieldValidator>
                                    </p>
                                    <p style="float: right;">
                                        <asp:Label ID="Label4" runat="server" Text="Phone Number" CssClass="login-label"></asp:Label>
                                        <asp:TextBox ID="TextBoxPhone" runat="server" placeholder="Your Phone" class="input"></asp:TextBox>
                                        <asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server" ErrorMessage="*"
                                            ControlToValidate="TextBoxPhone" ValidateEmptyText="true" ValidationExpression="^([0-9\(\)\/\+ \-]*)$"></asp:RequiredFieldValidator>
                                    </p>
                                    <p class="left">
                                        <asp:Label ID="Label5" runat="server" Text="Comment" CssClass="login-label"></asp:Label>
                                        <asp:TextBox ID="TextBoxComment" runat="server" placeholder="Nots" TextMode="MultiLine"
                                            Rows="4" class="login-textarea"></asp:TextBox><br />
                                    </p>
                                    <p>
                                        <asp:Button ID="Button1" UseSubmitBehavior="false" runat="server" Text="Rigester"
                                            CommandName="Select" class="btn btn-primary" OnClick="SendEmail" Style="cursor: pointer;
                                            border-radius: 5px; box-shadow: none; margin-left: auto; margin-right: auto;
                                            display: inline-block; vertical-align: top;" />
                                    </p>
                                </div>
                            </div>
                        </asp:Panel>
                    </div>
                </div>
            </div>
        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="btnGo" EventName="Click" />
            <asp:AsyncPostBackTrigger ControlID="DropDownListCity" EventName="SelectedIndexChanged" />
            <asp:AsyncPostBackTrigger ControlID="DropDownListCategory" EventName="TextChanged" />
            <asp:AsyncPostBackTrigger ControlID="DropDownListField" EventName="SelectedIndexChanged" />
            <asp:AsyncPostBackTrigger ControlID="DropDownListMonths" EventName="SelectedIndexChanged" />
        </Triggers>
    </asp:UpdatePanel>
</div>

Training.vb

Imports System
Imports System.Data
Imports System.Data.SqlClient
Imports System.ComponentModel
Imports System.Web.Services.Description
Imports System.Net.Mail
Imports System.Collections
Imports System.Drawing
Imports System.IO
Imports System.Web
Imports System.Web.SessionState
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports System.Web.UI.HtmlControls
Imports System.Net.Mail.MailMessage

Partial Class Training_Schedule
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load


        If Not Me.IsPostBack Then

            PopulateCategory()
            PopulateCity()
            PopulateField()
            PopulateMonths()
            getdata()

            'Attribute to show the Plus Minus Button.
            GridView1.HeaderRow.Cells(0).Attributes("data-class") = "expand"

            'Attribute to hide column in Phone.
            GridView1.HeaderRow.Cells(1).Attributes("data-hide") = "phone"
            GridView1.HeaderRow.Cells(2).Attributes("data-hide") = "phone"
            GridView1.HeaderRow.Cells(3).Attributes("data-hide") = "phone"
            GridView1.HeaderRow.Cells(4).Attributes("data-hide") = "phone"
            GridView1.HeaderRow.Cells(5).Attributes("data-hide") = "phone"

            'Adds THEAD and TBODY to GridView.
            GridView1.HeaderRow.TableSection = TableRowSection.TableHeader


        End If
    End Sub

    Protected Sub Page_LoadComplete(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.LoadComplete
        Response.AppendHeader("Refresh", "5000; URL=ur URL")
    End Sub
    Public Sub getdata()

        Dim objCourseFilter As New ScheduleNewDB

        objCourseFilter.CategoryIDPro = DropDownListCategory.SelectedValue
        objCourseFilter.CityIDPro = DropDownListCity.SelectedValue
        objCourseFilter.FieldIDPro = DropDownListField.SelectedValue
        objCourseFilter.MonthsIDPro = DropDownListMonths.SelectedValue


        Dim dt As DataTable = objCourseFilter.FindCourse()

        GridView1.DataSource = dt
        GridView1.DataBind()


    End Sub

    Public Sub PopulateCategory()

        If Not IsPostBack Then

            Dim ObjC As New Category
            Dim dt As DataTable = ObjC.Find()
            Dim dr As DataRow = dt.NewRow()
            dr("CategoryID") = 0
            dr("CategoryName") = "--- All Courses ---"
            dt.Rows.InsertAt(dr, 0)
            DropDownListCategory.DataSource = dt
            DropDownListCategory.DataTextField = "CategoryName"
            DropDownListCategory.DataValueField = "CategoryID"
            DropDownListCategory.DataBind()

        End If

    End Sub

    Public Sub PopulateCity()
        If Not IsPostBack Then
            Dim ObjC As New City
            Dim dt As DataTable = ObjC.FindCityCountry()
            Dim dr As DataRow = dt.NewRow()
            dr("CityID") = 0
            dr("CityCountry") = "--- All Cities ---"
            dt.Rows.InsertAt(dr, 0)


            'DropDownListCity.SelectedValue = Session("more")
            DropDownListCity.DataSource = dt


            DropDownListCity.DataTextField = "CityCountry"
            DropDownListCity.DataValueField = "CityID"
            DropDownListCity.DataBind()
        End If

    End Sub
    Public Sub PopulateField()
        If Not IsPostBack Then

            Dim ObjC As New Field
            Dim dt As DataTable = ObjC.Find()
            Dim dr As DataRow = dt.NewRow()

            dr("FieldID") = 0
            dr("FieldName") = "--- All Fields ---"
            dt.Rows.InsertAt(dr, 0)
            DropDownListField.DataSource = dt
            DropDownListField.DataTextField = "FieldName"
            DropDownListField.DataValueField = "FieldID"
            DropDownListField.DataBind()
        End If

    End Sub
    Public Sub PopulateMonths()

        If Not IsPostBack Then

            Dim ObjC As New MonthsDB
            Dim dt As DataTable = ObjC.FindMonth()
            Dim dr As DataRow = dt.NewRow()
            dr("MonthsID") = 0
            dr("MonthsName") = "--- All Months ---"
            dt.Rows.InsertAt(dr, 0)
            DropDownListMonths.DataSource = dt
            DropDownListMonths.DataTextField = "MonthsName"
            DropDownListMonths.DataValueField = "MonthsID"
            DropDownListMonths.DataBind()

        End If

    End Sub

    Protected Sub btnGo_Click(sender As Object, e As EventArgs) Handles btnGo.Click
        getdata()

    End Sub
    Protected Sub OnSelectedIndexChanged(sender As Object, e As EventArgs)

        mpe.Show()

    End Sub
    Protected Sub SendEmail(sender As Object, e As EventArgs)

        Dim EnglishName As String = TryCast(GridView1.SelectedRow.FindControl("lblEnglishName"), Label).Text
        Dim StartCours As String = TryCast(GridView1.SelectedRow.FindControl("lblStartCours"), Label).Text
        Dim EndCourse As String = TryCast(GridView1.SelectedRow.FindControl("lblEndCourse"), Label).Text
        Dim Days As String = TryCast(GridView1.SelectedRow.FindControl("lblDays"), Label).Text
        Dim CityCountry As String = TryCast(GridView1.SelectedRow.FindControl("lblCountry"), Label).Text
        Dim TextName As String = TextBoxName.Text
        Dim TextEmail As String = TextBoxEmail.Text
        Dim TextComment As String = TextBoxComment.Text
        Dim TextCityName As String = TextBoxCityName.Text
        Dim TextPhone As String = TextBoxPhone.Text
        mpe.Hide()

        Dim body As String = "Name :" + TextName + "<br>" + "Email :" + TextEmail + "<br/>" + "Msg :" + TextComment + "<br/>" + "Course :" + EnglishName + "<br>" + "Course Date :" + StartCours + "<br>" + "Country :" + TextCityName + "<br>" + "Phone :" + TextPhone + "<br>"
        Dim mail As New MailMessage()
        mail.[To].Add("noor@gmail.com")
        mail.Bcc.Add("noor@gmail.com")
        mail.From = New MailAddress("noor@gmail.com")
        mail.Subject = "New Register Member ...." + EnglishName
        mail.Body = body
        mail.IsBodyHtml = True

        Dim smtp As New SmtpClient("relay-hosting.secureserver.net")
        smtp.EnableSsl = False
        smtp.UseDefaultCredentials = True
        smtp.Send(mail)

        lblmsg.Text = "registration successful"


    End Sub
End Class

Hi NoorAhmed,

You need to add "ValidationGroup" for all the controls which have assigned with validation and finally add the validation group to button "Register" then it will work.

Hi Indresh,

Please , Any Example for "ValidationGroup" !

I do not know how to use it in my code .

NoorAhmed says:

 <asp:Panel ID="pnlPopup" runat="server" Class="modalPopup" Style="display: none">

 

 

<div class="footer" align="right" style ="float:right;">

            <asp:Button ID="btnClose" runat="server" UseSubmitBehavior="false" Text="x" style=" margin: 2px;     font-size: 22px; color: white;    background: none;

    border: none; border-color:none ; border-radius:0px; " />

        </div>

 

<div class="login">

 

  <div class="login-header">

 

    <p style="font-size:30px;font-family: 'Lato', sans-serif;  display: block;  border-bottom: 1px solid rgba(255, 255, 255, 0.3);

  margin: 0 0 0.1em 0; padding-bottom: 20px;">CONTACT US </p>

 

    <p style="    font-family: 'Lato', sans-serif;    font-size: 1.25em;    margin: 1em 0 0.4em 0;">Fill out the form below to complete register!</p>

  </div>

 

  <div class="login-form">

 

       

      <p class="left">

 

 <asp:Label ID="Label1" runat="server" Text="Full Name" CssClass ="login-label" ></asp:Label>

                  

  <asp:TextBox ID="TextBoxName" runat="server" placeholder="Your Name" class="input"></asp:TextBox>

            <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="*"

             ControlToValidate = "TextBoxName"></asp:RequiredFieldValidator>

      </p>

    

      <p style="float:right;">

 

 <asp:Label ID="Label2" runat="server" Text="Email" CssClass ="login-label" ></asp:Label>

 

 <asp:TextBox ID="TextBoxEmail" runat="server" placeholder="Example@gmail.com" class="input"></asp:TextBox>

            <asp:RegularExpressionValidator id="valRegEx" runat="server"

            ControlToValidate="TextBoxEmail"

            ValidationExpression=".*@.*\..*"

            ErrorMessage="*Invalid Email address."

            display="dynamic">

            </asp:RegularExpressionValidator>

            <asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ErrorMessage="*"

            ControlToValidate = "TextBoxEmail"></asp:RequiredFieldValidator>

      </p>

      

                 

        <p class="left">

 

<asp:Label ID="Label3" runat="server" Text="Country" CssClass ="login-label" ></asp:Label>

 

   <asp:TextBox ID="TextBoxCityName" runat="server" placeholder="Your Country" class="input"></asp:TextBox>

           

              <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="*"

             ControlToValidate = "TextBoxCityName"></asp:RequiredFieldValidator>

          

 

      </p>

 

       <p style="float:right;">

 

<asp:Label ID="Label4" runat="server" Text="Phone Number" CssClass ="login-label" ></asp:Label>

 

   <asp:TextBox ID="TextBoxPhone" runat="server" placeholder="Your Phone" class="input"></asp:TextBox>

 

                   <asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server" ErrorMessage="*"

              ControlToValidate="TextBoxPhone" ValidateEmptyText="true" ValidationExpression= "^([0-9\(\)\/\+ \-]*)$"></asp:RequiredFieldValidator>

         

    </p>

           

       <p class="left">      

     

  <asp:Label ID="Label5" runat="server" Text="Comment" CssClass ="login-label" ></asp:Label>

 

 <asp:TextBox ID="TextBoxComment" runat="server" placeholder="Nots" TextMode="MultiLine"

                Rows="4" class="login-textarea" ></asp:TextBox><br />

               

          </p>

 

      <p>

 

                  <asp:Button ID="Button1" UseSubmitBehavior="false" runat="server" Text="Rigester" CommandName="Select" class="btn btn-primary" OnClick="SendEmail" style="    cursor: pointer;    border-radius: 5px;box-shadow:none;   margin-left: auto; margin-right:auto;display: inline-block;    vertical-align: top; "/>

        

      </p>

 

           </div>

 

     

  </div>

 

           

 

 </asp:Panel>

 Replace above code with below.

<asp:Panel ID="pnlPopup" runat="server" Class="modalPopup" Style="display: none">
    <div class="footer" align="right" style="float: right;">
        <asp:Button ID="btnClose" runat="server" UseSubmitBehavior="false" Text="x" Style="margin: 2px;
            font-size: 22px; color: white; background: none; border: none; border-color: none;
            border-radius: 0px;" />
    </div>
    <div class="login">
        <div class="login-header">
            <p style="font-size: 30px; font-family: 'Lato', sans-serif; display: block; border-bottom: 1px solid rgba(255, 255, 255, 0.3);
                margin: 0 0 0.1em 0; padding-bottom: 20px;">
                CONTACT US
            </p>
            <p style="font-family: 'Lato', sans-serif; font-size: 1.25em; margin: 1em 0 0.4em 0;">
                Fill out the form below to complete register!</p>
        </div>
        <div class="login-form">
            <p class="left">
                <asp:Label ID="Label1" runat="server" Text="Full Name" CssClass="login-label"></asp:Label>
                <asp:TextBox ID="TextBoxName" runat="server" placeholder="Your Name" class="input"></asp:TextBox>
                <asp:RequiredFieldValidator ID="RequiredFieldValidator1" ValidationGroup="Register"
                    runat="server" ErrorMessage="*" ControlToValidate="TextBoxName"></asp:RequiredFieldValidator>
            </p>
            <p style="float: right;">
                <asp:Label ID="Label2" runat="server" Text="Email" CssClass="login-label"></asp:Label>
                <asp:TextBox ID="TextBoxEmail" runat="server" placeholder="Example@gmail.com" class="input"></asp:TextBox>
                <asp:RegularExpressionValidator ID="valRegEx" ValidationGroup="Register" runat="server"
                    ControlToValidate="TextBoxEmail" ValidationExpression=".*@.*\..*" ErrorMessage="*Invalid Email address."
                    Display="dynamic">
                </asp:RegularExpressionValidator>
                <asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ValidationGroup="Register"
                    ErrorMessage="*" ControlToValidate="TextBoxEmail"></asp:RequiredFieldValidator>
            </p>
            <p class="left">
                <asp:Label ID="Label3" runat="server" Text="Country" CssClass="login-label"></asp:Label>
                <asp:TextBox ID="TextBoxCityName" runat="server" placeholder="Your Country" class="input"></asp:TextBox>
                <asp:RequiredFieldValidator ID="RequiredFieldValidator2" ValidationGroup="Register"
                    runat="server" ErrorMessage="*" ControlToValidate="TextBoxCityName"></asp:RequiredFieldValidator>
            </p>
            <p style="float: right;">
                <asp:Label ID="Label4" runat="server" Text="Phone Number" CssClass="login-label"></asp:Label>
                <asp:TextBox ID="TextBoxPhone" runat="server" placeholder="Your Phone" class="input"></asp:TextBox>
                <asp:RequiredFieldValidator ID="RequiredFieldValidator4" ValidationGroup="Register"
                    runat="server" ErrorMessage="*" ControlToValidate="TextBoxPhone" ValidateEmptyText="true"
                    ValidationExpression="^([0-9\(\)\/\+ \-]*)$"></asp:RequiredFieldValidator>
            </p>
            <p class="left">
                <asp:Label ID="Label5" runat="server" Text="Comment" CssClass="login-label"></asp:Label>
                <asp:TextBox ID="TextBoxComment" runat="server" placeholder="Nots" TextMode="MultiLine"
                    Rows="4" class="login-textarea"></asp:TextBox><br />
            </p>
            <p>
                <asp:Button ID="Button1" UseSubmitBehavior="false" ValidationGroup="Register" runat="server"
                    Text="Register" CommandName="Select" class="btn btn-primary" OnClick="SendEmail"
                    Style="cursor: pointer; border-radius: 5px; box-shadow: none; margin-left: auto;
                    margin-right: auto; display: inline-block; vertical-align: top;" />
            </p>
        </div>
    </div>
</asp:Panel>