How to get javascript array inside asp.net button click event?

Question

net application. I have one gridview with checkboxes.Whenever checkbox is checked i want to send email to users. My columns of gridview are id,name,emailid etc. Whenever checkbox is checked i want to send email. I written javascript code to catch up all the emailids from gridview and pushing all the email ids to the array. I am confusing how to take these id's to the server side. This is my button.

<asp:Button ID="Button1" class="submitLink blueButton" runat="server" Text="GETID" OnClientClick="javascript:sendEmail()" OnClick="Button1_Click" />

Using below line of code I am able to get the required email id's

$('#<%= gdvRegretletter.ClientID %> input[type="CheckBox"]').each(function () {
    if ($(this).closest('tr').find('input[type="checkbox"]').prop("checked") == true)
        email.push($(this).closest('tr').find('td:eq(3)').text().trim());
});

Array email will be capturing all the required email id's but i want these values inside the Button1_Click event in server side. May i have some idea to achieve this? Thank you for your time.

http://stackoverflow.com/questions/3713/call-asp-net-function-from-javascript — Masoud Andalibi, Jan 02 '17 at 11:29
Hey thank you for your response. May i know other than making ajax call is there any other method? — Niranjan Godbole, Jan 02 '17 at 11:45

VDWWD · Accepted Answer · 2017-01-02T12:22:31.367

You could loop all the rows in the GridView and see which CheckBox has been checked. In this snippet the email address is also displayed in the GridView in a Literal, but there are a lot of other ways do get the email address, either from the GridView or it's original source.

<asp:GridView ID="GridView1" runat="server" DataKeyNames="Id">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:CheckBox ID="CheckBox1" runat="server" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:Literal ID="Literal1" runat="server" Text='<%# Eval("email") %>'></asp:Literal>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>


protected void Button1_Click(object sender, EventArgs e)
{
    //loop all the rows in the gridview
    foreach (GridViewRow row in GridView1.Rows)
    {
        //find the checkbox with findcontrol and cast it back to one
        CheckBox checkbox = row.FindControl("CheckBox1") as CheckBox;

        //is it checked?
        if (checkbox.Checked == true)
        {
            //do the same for the label with the email address
            Literal literal = row.FindControl("Literal1") as Literal;

            string email = literal.Text;

            //send email
        }
    }
}

Thank you for your response. I will implement as this well. Basically MVC developer.new to asp.net world — Niranjan Godbole, Jan 02 '17 at 12:18
I've updated my answer. But as I mentioned you could also get the row values in serveral other ways. But the best solution would depend on your GridView design. — VDWWD, Jan 02 '17 at 12:24

How to get javascript array inside asp.net button click event?

1 Answers1