Print GridView on button click without using JavaScript in ASP.Net

hello 

any one can help me 

can any one help me with 

my issue 

maniks says:

 <asp:Button ID="btnPrint" runat="server" Text="Print" onclick = "Gridprint();""/>

 Replace above code like below

 <asp:Button ID="btnPrint" runat="server" Text="Print" onclick = "Print"/>

Hope this works for you

JavaScript runtime error: Unable to get property 'document' of undefined or null reference NO WI AM GETTING 

THIS 

THANKS FOR REPLY 

Hi maniks,

I have changed your code and wroking correctly with no error. Check the below code.

HTML

<div>
    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" Font-Names="Arial"
        Font-Size="11pt" AlternatingRowStyle-BackColor="#C2D69B" HeaderStyle-BackColor="green"
        AllowPaging="false">
        <Columns>
            <asp:BoundField ItemStyle-Width="50px" DataField="ENO" HeaderText="ENO" />
            <asp:BoundField ItemStyle-Width="150px" DataField="ENAME" HeaderText="ENAME" />
            <asp:BoundField ItemStyle-Width="150px" DataField="JOB" HeaderText="JOB" />
        </Columns>
    </asp:GridView>
</div>
<br />
<asp:Button ID="btnPrint" runat="server" Text="Print" OnClick="Gridprint" />

Code

protected void Page_Load(object sender, EventArgs e)
{
    Response.Cache.SetCacheability(HttpCacheability.NoCache);
    BindGridview();
}

protected void BindGridview()
{
    DataTable dt = new DataTable();
    dt.Columns.AddRange(new DataColumn[] { 
    new DataColumn("ENO", typeof(int)), 
    new DataColumn("ENAME", typeof(string)), 
    new DataColumn("JOB", typeof(string)) });
    dt.Rows.Add(1, "Mudassar Khan", "Owner");
    dt.Rows.Add(2, "Maria ", "Sales Representative");
    dt.Rows.Add(3, "Ana Trujillo ", "Owner");
    dt.Rows.Add(4, "Antonio Moreno ", "Owner");
    dt.Rows.Add(5, "Thomas Hardy ", "Sales Representative");
    dt.Rows.Add(6, "Christina Berglund ", "Order Administrator");
    dt.Rows.Add(7, "Hanna Moos ", "Sales Representative");
    dt.Rows.Add(8, "Frédérique Citeaux ", "Marketing Manager");
    dt.Rows.Add(9, "Martín Sommer ", "Owner");
    dt.Rows.Add(10, "Laurence Lebihan ", "Owner");
    dt.Rows.Add(11, "Elizabeth Lincoln", "Accounting Manager");
    dt.Rows.Add(12, "Victoria Ashworth", "Sales Representative");
    dt.Rows.Add(13, "Patricio Simpson", "Sales Agent");
    GridView1.DataSource = dt;
    GridView1.DataBind();
}

public override void VerifyRenderingInServerForm(Control control)
{
    /*Verifies that the control is rendered */
}

protected void Gridprint(object sender, EventArgs e)
{
    GridView1.UseAccessibleHeader = true;
    GridView1.HeaderRow.TableSection = TableRowSection.TableHeader;
    GridView1.FooterRow.TableSection = TableRowSection.TableFooter;
    GridView1.Attributes["style"] = "border-collapse:separate";
    foreach (GridViewRow row in GridView1.Rows)
    {
        if (row.RowIndex % 9 == 0 && row.RowIndex != 0)
        {
            row.Attributes["style"] = "page-break-after:always;";
        }
    }
    StringWriter sw = new StringWriter();
    HtmlTextWriter hw = new HtmlTextWriter(sw);
    GridView1.RenderControl(hw);
    string gridHTML = sw.ToString().Replace("\"", "'").Replace(System.Environment.NewLine, "");
    StringBuilder sb = new StringBuilder();
    sb.Append("<script type = 'text/javascript'>");
    sb.Append("window.onload = new function(){");
    sb.Append("var printWin = window.open('', '', 'left=0");
    sb.Append(",top=0,width=1000,height=600,status=0');");
    sb.Append("printWin.document.write(\"");
    string style = "<style type = 'text/css'>thead {display:table-header-group;} tfoot{display:table-footer-group;}</style>";
    sb.Append(style + gridHTML);
    sb.Append("\");");
    sb.Append("printWin.document.close();");
    sb.Append("printWin.focus();");
    sb.Append("printWin.print();");
    sb.Append("printWin.close();");
    sb.Append("};");
    sb.Append("</script>");
    ClientScript.RegisterStartupScript(this.GetType(), "GridPrint", sb.ToString());
    BindGridview();
}

Screenshot