disabling grid view template button

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ASP.NET4

hi,

I have a grid view template which will populate on page load from the data in database. below is the aspx code

<asp:GridView ID="grdJobsGrid" runat="server" AllowPaging="True" AllowSorting="True"
                                AutoGenerateColumns="False" Width="500px"
                                onrowcommand="grdJobsGrid_RowCommand" CellPadding="4" ForeColor="#333333"
                                GridLines="None" onrowcreated="grdJobsGrid_RowCreated">
                                <AlternatingRowStyle BackColor="White" />
                                <Columns>
                                    <asp:TemplateField HeaderText="JobId" Visible="false">
                                        <ItemTemplate>
                                            <asp:Label ID="lblJobId" runat="server" Text='<%#Eval("JobId") %>'></asp:Label>
                                        </ItemTemplate>
                                    </asp:TemplateField>
                                    <asp:TemplateField HeaderText="Job Title">
                                        <ItemTemplate>
                                            <asp:Label ID="lblJobTitle" runat="server" Text='<%#Eval("JobTitle") %>'></asp:Label>
                                        </ItemTemplate>
                                    </asp:TemplateField>

                                    <asp:TemplateField HeaderText="Posted Date" >
                                        <ItemTemplate>
                                            <asp:Label ID="lblPosteddate" runat="server" Text='<%#Eval("CreatedDate") %>'></asp:Label>
                                        </ItemTemplate>
                                    </asp:TemplateField>

                                    <asp:TemplateField HeaderText="Expired On">
                                        <ItemTemplate>
                                            <asp:Label ID="lblExpiredOn" runat="server" Text='<%#Eval("ExpiredOn") %>'></asp:Label>
                                        </ItemTemplate>

                                    </asp:TemplateField>

                                    <asp:TemplateField HeaderText="Applicants" ItemStyle-HorizontalAlign="Center">

                                        <ItemTemplate>
                                            <asp:LinkButton ID="lblApplicant" runat="server" CommandName="lnkApplicantClick" CommandArgument='<%#Eval("JobId") %>' Text='<%#Eval("ApplicantsCount") %>'></asp:LinkButton>
                                        </ItemTemplate>

                                        <ItemStyle HorizontalAlign="Center"></ItemStyle>
                                    </asp:TemplateField>
                                    <asp:TemplateField HeaderStyle-HorizontalAlign="Center" HeaderText="Action" ItemStyle-HorizontalAlign="Center">
                                        <ItemTemplate>
                                            <asp:ImageButton ID="BtnEdit" runat="server" CausesValidation="False" CommandArgument='<%#Eval("JobId")%>'
                                                CommandName="BtnEdit" ImageUrl="~/App_Themes/Theme1/Images/edit.gif" />
                                            <asp:ImageButton ID="BtnDelete" runat="server" CausesValidation="False" CommandArgument='<%#Eval("JobId")%>'
                                                CommandName="BtnDelete" ImageUrl="~/App_Themes/Theme1/Images/cancel.gif" />
                                        </ItemTemplate>
                                        <HeaderStyle HorizontalAlign="Center" />
                                        <ItemStyle HorizontalAlign="Center" Width="15%" />
                                    </asp:TemplateField>

                                  </Columns>

while clicking on Applicants hyperlink bounded coloum it will transfer to another page there the users can see the list of applcants in grid view. and it also has a send button. once clicking on the send button will send email to the candidate. once email send then i will record that to another table.

I want to disable the send button after rows recorded to the database and when the user visited the same page again i want to keep the send button to be disabled. please help me how can i achieve this


Thanks in advance

regards