Delete Multiple Records From Gridview and also asking Permission to whether the record is delete or not

First Add this script to header tag on .aspx page:

  <script type="text/javascript" language="javascript">
        function DeleteConfirmation() {
            if (confirm("Are you sure, you want to delete selected records ?") == true)
                return true;
            else
                return false;
        }
    </script>


and call this function on button like this:

OnClientClick="return DeleteConfirmation()"

First Get the records from database attache to gridview

write the following code on button click event:

 string strID = string.Empty;

        for (int i = 0; i < gvsample.Rows.Count; i++)
        {
            CheckBox chkDelete = (CheckBox)gvsample.Rows[i].
                             Cells[0].FindControl("chkSelect");
            if (chkDelete != null)
            {
                if (chkDelete.Checked)
                {

                    Label lbldeleteid = (Label)gvsample.Rows[i].Cells[1].FindControl("lblid");
                    if (strID != string.Empty)
                        strID += ",";
                    strID += "" + lbldeleteid.Text + "";
                    //strID  = lbldeleteid.Text;
                    //idCollection.Add(strID);
                }
            }
        }
        string s1 = "delete from store where id in("+strID+")";
        //sb += sb.AppendFormat("{0}='{1}'; ", s1, item);
        con.Open();
        SqlCommand cmd = new SqlCommand(s1, con);
        //cmd.ExecuteNonQuery();
        int j = Convert.ToInt32(cmd.ExecuteNonQuery());
        con.Close();
        if (j > 0)
        {
            lblsample.Text = j+"Record(s) Deleted Sucessfully";
        }
        else
        {
        }
        getdata();

Sending E-Mail With Attachment

 MailMessage mail = new MailMessage();
         mail.To.Add("To mail id");
     
        mail.From = new MailAddress("From mail id");
        mail.Subject = "mail";
        mail.Body = "find the attached file";
        mail.IsBodyHtml = true;

      //Attach file using FileUpload Control and put the file in memory stream

        mail.Attachments.Add(new Attachment("Attached document file path"));
     
      SmtpClient smtp = new SmtpClient();
       smtp.Host = "smtp.gmail.com"; //Or Your SMTP Server Address
       smtp.Credentials = new System.Net.NetworkCredential
           ("u r email id", "password");
       //Or your Smtp Email ID and Password
       smtp.EnableSsl = true;
       smtp.Send(mail);

check only one checkbox among multiple check boxes in gridview

add the below script in your html head section

<script type="text/javascript">
        function CheckOne(obj) {
            var grid = obj.parentNode.parentNode.parentNode;
            var inputs = grid.getElementsByTagName("input");
            for (var i = 0; i < inputs.length; i++) {
                if (inputs[i].type == "checkbox") {
                    if (obj.checked && inputs[i] != obj && inputs[i].checked) {
                        inputs[i].checked = false;
                    }
                }
            }
        }
    </script>


call the above function in your checkbox like:

 <asp:CheckBox ID="chkinner" runat="server" AutoPostBack="true" onclick="CheckOne(this);"
                                                                                OnCheckedChanged="chkinner_CheckedChanged" />

display gmap on a asp.net page

First Download Gmap.dll file add it to solution

Add the following page directive:

<%@ Register Assembly="GMaps" Namespace="Subgurim.Controles" TagPrefix="cc1" %>


and then add the following code which position you display the gmap

 <cc1:GMap ID="GMap1" runat="server" Height="365px" Width="700px" />

u can edit height and width