XML

Question

hello........
Iam facing problem in XML....
I want to save employee records in XML file using user input....
But when i tried to save the data in XML File ...it is storing only one record ...
try to solve my problem so that i can add multiple records in the XML file..........

by one record i mean that..
i want to save employee details like employee no,employee name, salary and job....
when i tried to save the data.. it saves the record of only one employee...and it replaces the previous saved record ihv used following code to save the data

public void SaveData()
    {
        dtbl = new DataTable("emp");
        dtbl.Columns.Add(new DataColumn("EmpNo",Type.GetType("System.String")));
        dtbl.Columns.Add(new DataColumn("EmpName", Type.GetType("System.String")));
        dtbl.Columns.Add(new DataColumn("EmpJob", Type.GetType("System.String")));
        dtbl.Columns.Add(new DataColumn("EmpSalary", Type.GetType("System.String")));
        //DataTable dt = display_data();
        if (dtbl.Rows.Count > 0)
        {
            DataRow r = dtbl.NewRow();
            r[0] = txtEmployeeNumber.Text;
            r[1] = txtEmployeeName.Text;
            r[2] = txtJob.Text;
            r[3] = txtSalary.Text;

            dtbl.Rows.Add(r);
            str = Server.MapPath("XMLEmp.xml");
            dtbl.WriteXml(str);
            dtbl.AcceptChanges();
            lblMsg.Text = "Data Saved";
        }
SaveData() is the function which i hv called in btnSave_click

and str is varible of string datatype

now you can solve my problem easily...

 

Thanks.............