Print ASP.Net GridView Data Rows using JavaScript in C# and VB.Net

Print Current Page of ASP.Net GridView control

Below is the Button Event handler that is called when the Print Button is clicked

C#

protected void  PrintCurrentPage(object sender, EventArgs e)

{

    GridView1.PagerSettings.Visible = false;

    GridView1.DataBind();

    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(\"");

    sb.Append(gridHTML);

    sb.Append("\");");

    sb.Append("printWin.document.close();");

    sb.Append("printWin.focus();");

    sb.Append("printWin.print();");

    sb.Append("printWin.close();};");

    sb.Append("</script>"); 

    ClientScript.RegisterStartupScript(this.GetType(), "GridPrint", sb.ToString());

    GridView1.PagerSettings.Visible = true;

    GridView1.DataBind();

}

VB.Net

Protected Sub PrintCurrentPage(ByVal sender As Object, ByVal e As EventArgs)

  GridView1.PagerSettings.Visible = False

  GridView1.DataBind()

  Dim sw As New StringWriter()

  Dim hw As New HtmlTextWriter(sw)

  GridView1.RenderControl(hw)

  Dim gridHTML As String = sw.ToString().Replace("""", "'") _

     .Replace(System.Environment.NewLine, "")

  Dim sb As 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(""")

  sb.Append(gridHTML)

  sb.Append(""");")

  sb.Append("printWin.document.close();")

  sb.Append("printWin.focus();")

  sb.Append("printWin.print();")

  sb.Append("printWin.close();};")

  sb.Append("</script>")

  ClientScript.RegisterStartupScript(Me.GetType(), "GridPrint", sb.ToString())

  GridView1.PagerSettings.Visible = True

  GridView1.DataBind()

End Sub

As you’ll notice I have created a JavaScript method to print the GridView content which is called when the page is loaded. The screenshot below displays the preview of the ASP.Net GridView that will be printed

Print All Pages of ASP.Net GridView control

Below is the Button Event handler that is called when the Print All Button is clicked

C#

protected void  PrintAllPages(object sender, EventArgs e)

{

    GridView1.AllowPaging = false;

    GridView1.DataBind();

    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(\"");

    sb.Append(gridHTML);

    sb.Append("\");");

    sb.Append("printWin.document.close();");

    sb.Append("printWin.focus();");

    sb.Append("printWin.print();");

    sb.Append("printWin.close();};");

    sb.Append("</script>"); 

    ClientScript.RegisterStartupScript(this.GetType(), "GridPrint", sb.ToString());

    GridView1.AllowPaging = true;

    GridView1.DataBind();

}

VB.Net

Protected Sub PrintAllPages(ByVal sender As Object, ByVal e As EventArgs)

  GridView1.AllowPaging = False

  GridView1.DataBind()

  Dim sw As New StringWriter()

  Dim hw As New HtmlTextWriter(sw)

  GridView1.RenderControl(hw)

  Dim gridHTML As String = sw.ToString().Replace("""", "'") _

       .Replace(System.Environment.NewLine, "")

  Dim sb As 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=1000,status=0');")

  sb.Append("printWin.document.write(""")

  sb.Append(gridHTML)

  sb.Append(""");")

  sb.Append("printWin.document.close();")

  sb.Append("printWin.focus();")

  sb.Append("printWin.print();")

  sb.Append("printWin.close();};")

  sb.Append("</script>")

  ClientScript.RegisterStartupScript(Me.[GetType](), "GridPrint", sb.ToString())

  GridView1.AllowPaging = True

  GridView1.DataBind()

End Sub

The only difference in the above function is that I am disabling the paging so that all pages are printed. The screenshot below displays the preview of the ASP.Net GridView that will be printed.