How to print multiple reports using ASP.NET GridView, RDLC?

I want to print reports based on GridView checkbox. If 3 rows have been chosen, there should be 3 reports. My code is like this...

protected void btn_Print_Click(object sender, EventArgs e)
    {
        if (IsPostBack)
        {
            try
            {
                foreach (GridViewRow gvr in grdRV.Rows)
                {
                    RadioButton rbID = (RadioButton)gvr.FindControl("rbID") as RadioButton;

                    if (rbID != nu开发者_JAVA百科ll && rbID.Checked)
                    {
                        string sID = grdRV.DataKeys[gvr.RowIndex].Value.ToString().Trim();

                        if (rbl_Print.SelectedValue == "0")
                        {
                            SMTP(sID);
                        }
                        else if (rbl_Print.SelectedValue == "1")
                        {
                            Material(sID);
                        }
                    }
                 }
            }
            catch (Exception ex)
            {
                Session["error"] = ex.Message;
                Response.Redirect("MessageBoard.aspx");
            }
        }
    }

private void Material(string sID)
    {            

        string querystring = "../pmis/Reports/RptRFQMatV.aspx?RFQNo=" + lblRFQNo.Text.ToString() + "&ID=" + sID;

        Random r = new Random();            
        string Script = "";
        Script += "<script language=JavaScript id='PopupWindow'>";
        Script += "confirmWin = window.open(' " + querystring + "','" + r.Next() + "','scrollbars=yes,resizable=1, width=960,height=500,left=50,top=130,status');";
        Script += "confirmWin.Setfocus()</script>";

        //ClientScript.RegisterStartupScript(typeof(string), "PopupScript", "PopupWindow");
        if (!ClientScript.IsClientScriptBlockRegistered("PopupWindow"))
            ClientScript.RegisterClientScriptBlock(typeof(string), "PopupWindow", Script);
    }

...but currently this code can print report the last row only.

---

I tested this and it does open the three windows, you'll have to tweak it a bit by passing a list of selected IDs to Material, so that you call Material just once. Inside material in your string manipulation, after the following line,

Script += "<script language=JavaScript id='PopupWindow'>";

add a for loop that goes though the selected IDs and adds a window.open. So, the following lines should be in the for/foreach loop

string querystring = "../pmis/Reports/RptRFQMatV.aspx?RFQNo=" + lblRFQNo.Text.ToString() + "&ID=" + sID;


Script += "confirmWin = window.open(' " + querystring + "','" + r.Next() + "','scrollbars=yes,resizable=1, width=960,height=500,left=50,top=130,status');";

and then the following lines follow and are outside the for loop.

Script += "confirmWin.Setfocus()</script>";

        //ClientScript.RegisterStartupScript(typeof(string), "PopupScript", "PopupWindow");
        if (!ClientScript.IsClientScriptBlockRegistered("PopupWindow"))
            ClientScript.RegisterClientScriptBlock(typeof(string), "PopupWindow", Script);

This is my example and works. Also, would be better if you use StringBuilder instead of string +=

        string Script = "";
        Script += "<script language=JavaScript id='PopupWindow'>";
        Script += "window.open('www.google.com.au', '1','scrollbars=yes,resizable=1, width=960,height=500,left=50,top=130,status');";
        Script += "window.open('www.yahoo.com','2','scrollbars=yes,resizable=1, width=960,height=500,left=50,top=130,status');";
        Script += "window.open('www.stackoverflow.com','3', 'scrollbars=yes,resizable=1, width=960,height=500,left=50,top=130,status');";
        Script += "</script>";

        if (!ClientScript.IsClientScriptBlockRegistered("PopupWindow"))
            ClientScript.RegisterClientScriptBlock(typeof(string), "PopupWindow", Script);

Hope this helps.