The table must contain row sections in order of header, body

Question

I am using printwebhelper method for printing the gridview content

i just pass gridview to the class

the class is :

<pre lang="c#">public static void PrintWebControl(Control ctrl, string Script, GridView SalesGridView)

{

//if (System.Web.HttpContext.Current.(string)Session["isgrid"] == "grid")

//{

// GridView grid = (GridView)ctrl;

// grid.AllowPaging = false;

// grid.DataBind();

if (SalesGridView.Rows.Count &gt; 0)

{

//}

SalesGridView.UseAccessibleHeader = true;

SalesGridView.HeaderRow.TableSection = TableRowSection.TableHeader;

SalesGridView.FooterRow.TableSection = TableRowSection.TableFooter;

SalesGridView.Attributes["style"] = "border-collapse:separate";

foreach (GridViewRow row in SalesGridView.Rows)

{

if (row.RowIndex % 30 == 0 && row.RowIndex != 0)

{

row.Attributes["style"] = "page-break-after:always;";

}

}

StringWriter stringWrite = new StringWriter();

System.Web.UI.HtmlTextWriter htmlWrite = new System.Web.UI.HtmlTextWriter(stringWrite);

if (ctrl is WebControl)

{

Unit w = new Unit(100, UnitType.Percentage); ((WebControl)ctrl).Width = w;

}

Page pg = new Page();

pg.EnableEventValidation = false;

if (Script != string.Empty)

{

pg.ClientScript.RegisterStartupScript(pg.GetType(), "PrintJavaScript", Script);

}

HtmlForm frm = new HtmlForm();

pg.Controls.Add(frm);

frm.Attributes.Add("runat", "server");

frm.Controls.Add(ctrl);

pg.DesignerInitialize();

pg.RenderControl(htmlWrite);

string strHTML = stringWrite.ToString();

HttpContext.Current.Response.Clear();

HttpContext.Current.Response.Write(strHTML);

HttpContext.Current.Response.Write("&lt;script&gt;window.print();&lt;/script&gt;");

string style = "&lt;style type = 'text/css'&gt;td { padding: 4px; border: solid 1px #c1c1c1; color: #474545; font-family:Arial; font-size:12px } th { padding: 2px 2px; color: #3e4d9e; background: #e0d7f4 ; font-family:Arial; text-align:left;text-indent:10px; font-size:14px ;border-top: solid 1px #a99cec; border-left:none;border-right:none; border-bottom:none }{ width: 100%;background-color: #fff; margin: 5px 0 10px 0; border-top: solid 1px #a99cec; border-left:solid 1px #a99cec;border-right:solid 1px #a99cec;font-family:Arial; font-size:15px; &lt;/style&gt;";

HttpContext.Current.Response.Write(style);

HttpContext.Current.Response.End();

}

}

</pre>

but when it reached

<pre lang="cs">pg.DesignerInitialize();

pg.RenderControl(htmlWrite);</pre>

line it showing the error

The table must contain row sections in order of header, body, then footer