I am exporting a GridView to an Excel file, but when I open
the file, first I get an error regarding the fact that
the format type and extension don't match, and when I open it
the whole page is brought into the Excel file, not just the grid view.
I'm not using an Update Panel. I tried with the button inside the GridView and outside
and the same result, so it seems it might be something from the code-behind which
looks like this:
Response.Clear();
Response.Buffer = true;
string filename = "GridViewExport_" + DateTime.Now.ToString() + ".xls";
Response.AddHeader("content-disposition",
"attachment;filename=" + filename);
Response.Charset = String.Empty;
Response.ContentType = "application/vnd.ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView3.RenderControl(hw);
//style to format numbers to string
string style = #"<style> .textmode { mso-number-format:\#; } </style>";
Response.Write(style);
Response.Output.Write(sw.ToString());
Response.Flush();
HttpContext.Current.ApplicationInstance.CompleteRequest();
You can try this method:
void ExportDataSetToExcel(GridView grdData, string filename)
{
grdData.BorderStyle = BorderStyle.Solid;
grdData.BorderWidth = 1;
grdData.BackColor = Color.WhiteSmoke;
grdData.GridLines = GridLines.Both;
grdData.Font.Name = "Verdana";
grdData.Font.Size = FontUnit.XXSmall;
grdData.HeaderStyle.BackColor = Color.DimGray;
grdData.HeaderStyle.ForeColor = Color.White;
grdData.RowStyle.HorizontalAlign = HorizontalAlign.Left;
grdData.RowStyle.VerticalAlign = VerticalAlign.Top;
HttpResponse response = HttpContext.Current.Response;
response.Clear();
response.Charset = "";
response.ContentType = "application/vnd.ms-excel";
response.AddHeader("Content-Disposition", "attachment;filename=\"" + filename+ "\"");
using (var sw = new StringWriter())
{
using (var htw = new HtmlTextWriter(sw))
{
grdData.RenderControl(htw);
response.Write(sw.ToString());
response.End();
}
}
}
USE this code: This will work fine..
aspx code::
<%# Page Language="C#" AutoEventWireup="true" CodeFile="default.aspx.cs" Debug ="true" enableEventValidation ="false" Inherits="default"%>
Here is the aspx code :
protected void ConvertToExcel_Click(object sender, EventArgs e)
{
Response.ClearContent();
Response.Buffer = true;
Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "Report.xls"));
Response.ContentType = "application/ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
GridView1.AllowPaging = false;
GridView1.DataBind();
GridView1.HeaderRow.Style.Add("background-color", "#FFFFFF");
for (int i = 0; i < GridView1.HeaderRow.Cells.Count; i++)
{
GridView1.HeaderRow.Cells[i].Style.Add("background-color", "#bfc2c7");
}
int j = 1;
foreach (GridViewRow gvrow in GridView1.Rows)
{
if (j <= GridView1.Rows.Count)
{
if (j % 2 != 0)
{
for (int k = 0; k < gvrow.Cells.Count; k++)
{
gvrow.Cells[k].Style.Add("background-color", "#EFF3FB");
}
}
}
j++;
}
GridView1.RenderControl(htw);
Response.Write(sw.ToString());
Response.End();
}
public override void VerifyRenderingInServerForm(Control control)
{
}
Solved !!!
your code is correct only problem with Response.Flush(); using in the code
instead of Response.Flush(); you should use Response.End();
Below is the working code:
Response.Clear();
Response.Buffer = true;
string filename = "GridViewExport_" + DateTime.Now.ToString() + ".xls";
Response.AddHeader("content-disposition",
"attachment;filename=" + filename);
Response.Charset = String.Empty;
Response.ContentType = "application/vnd.ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView3.RenderControl(hw);
//style to format numbers to string
string style = #"<style> .textmode { mso-number-format:\#; } </style>";
Response.Write(style);
Response.Output.Write(sw.ToString());
Response.End();
// Response.Flush();
HttpContext.Current.ApplicationInstance.CompleteRequest();
Related
I have a working method, that export to excel, but the issue is file extension is not support and being not format. This is not user friendly, how can I improve this from not allow a user to see this issue?
// controller
public void ExportToExcel()
{
var v = new GridView();
v.DataSource = this.GetExtractionViewModels();
v.DataBind();
Response.ClearContent();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment; filename=ExtractionRecords.xls");
Response.ContentType = "application/ms-excel";
Response.Charset = "";
StringWriter objStringWriter = new StringWriter();
HtmlTextWriter htmlTextWriter = new HtmlTextWriter(objStringWriter);
v.RenderControl(htmlTextWriter);
Response.Output.Write(objStringWriter.ToString());
Response.Flush();
Response.End();
//return View("DataResult");
}
I have trying to export my data from my data access layer
but nothing happens no error and not exported.
it is kinda hard to know whats wrong because there's no error
I have tried this:
if (dt.Rows.Count > 0){
dgv.DataSource = dt;
dgv.DataBind();
Response.ClearContent();
Response.AppendHeader("content-disposition","attachement;filename=transaction.xls");
Response.ContentType = "application/excel";
StringWriter stringWritter = new StringWriter();
HtmlTextWriter htmlTextWritter = new HtmlTextWriter(stringWritter);
dgv.RenderControl(htmlTextWritter);
Response.Write(stringWritter.ToString());
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.SuppressContent = true;
HttpContext.Current.ApplicationInstance.CompleteRequest();
butnothing happens.
i have tried this but also nothing:
StringWriter osStringWritter = new StringWriter();
Html32TextWriter osHtmlTextWritter = new Html32TextWriter(osStringWritter);
DataTable dt = new DataTable();
DataGrid dgv = new DataGrid();
Response.Clear();
Response.Buffer = false;
Response.ContentType = "application/vnd.ms-excel";
Response.AddHeader("content-disposition", string.Format("attachment;filename={0}.xls", "TransactionReport"));
Response.Charset = "";
dgv.DataSource = dt;
dgv.DataBind();
dgv.RenderControl(osHtmlTextWritter);
Response.Write("Report Datw:" + DateTime.Now);
Response.Write(osStringWritter.ToString());
//Response.End();
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.SuppressContent = true;
HttpContext.Current.ApplicationInstance.CompleteRequest();
dgv = null;
osStringWritter = null;
osHtmlTextWritter = null;
What i'm doing wrong ?
Try this may resolve your issue
dgv.DataSource = dt;
dgv.DataBind();
Response.ClearContent();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename = Export to Excel.xls");
Response.ContentType = "application/ms-excel";
Response.Charset = "";
using (StringWriter sw = new StringWriter())
{
using (HtmlTextWriter htw = new HtmlTextWriter(sw))
{
dgv.RenderControl(htw);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();
}
}
I am trying to export to excel the grid view data.I could bind the data in excel.However when I open the grid view I am losing its grid lines which looks really bad. I have added my code below.
This code takes my grid data and exports it to excel deleting all the gridlines i tried to google couldnt find a breaktrough can someone help me with this
protected void btn_export_Click(object sender, EventArgs e)
{
Response.Buffer = true;
Response.ClearContent();
Response.ClearHeaders();
Response.Charset = "";
string FileName = "Dashboard_FOR_PM" + DateTime.Now + ".xls";
StringWriter strwritter = new StringWriter();
HtmlTextWriter htmltextwrtter = new HtmlTextWriter(strwritter);
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.ContentType = "application/vnd.ms-excel";
Response.AddHeader("Content-Disposition", "attachment;filename=" + FileName);
grv_dashboard.GridLines = GridLines.Both;
grv_dashboard.HeaderStyle.Font.Bold = true;
grv_dashboard.RenderControl(htmltextwrtter);
Response.Write(strwritter.ToString());
using (StringWriter sw = new StringWriter())
{
using (HtmlTextWriter htw = new HtmlTextWriter(sw))
{
Table table = new Table();
table.BorderStyle = BorderStyle.Solid;
table.BorderWidth=new Unit(1);
table.BorderColor = System.Drawing.Color.Black;
table.GridLines = GridLines.Both;
}
}
strwritter.Write(#"<html xmlns:x=""urn:schemas-microsoft-com:office:excel"">");
strwritter.Write(#"<head>
<xml>
<x:ExcelWorkbook>
<x:ExcelWorksheets>
<x:ExcelWorksheet>
<x:WorksheetOptions>
<x:Panes></x:Panes>
<x:Print><x:Gridlines /></x:Print>
</x:WorksheetOptions>
</x:ExcelWorksheet>
</x:ExcelWorksheets>
</x:ExcelWorkbook>
</xml>
</head>");
Response.End();
}
have a look at below function that I wrote before,please ask if something is unclear,hope it helps
public void ToExcel(DataTable dt, string reportName)
{
if (dt.Rows.Count > 0)
{
string filename = string.Format("{0}.xls", reportName);
System.IO.StringWriter sw = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw);
HtmlForm hf = new HtmlForm();
DataGrid dg = new DataGrid();
dg.DataSource = dt;
dg.HeaderStyle.BackColor = Color.Tomato;//change to your own colors
dg.HeaderStyle.ForeColor = Color.White;//change to your own colors
dg.BackColor = Color.LightGoldenrodYellow;//change to your own colors
dg.AlternatingItemStyle.BackColor = Color.PaleGoldenrod;//change to your own colors
dg.Font.Name = "Tahoma";
dg.Font.Size = 10;
dg.GridLines = GridLines.Both;
dg.BorderColor = System.Drawing.Color.Black;
dg.BorderStyle = BorderStyle.Solid;
dg.BorderWidth = new Unit(1);
dg.DataBind();
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.Buffer = true;
HttpContext.Current.Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment; filename=" + filename);
HttpContext.Current.Response.Charset = "";
EnableViewState = false;
Controls.Add(hf);
hf.Controls.Add(dg);
hf.RenderControl(htw);
HttpContext.Current.Response.Write(sw.ToString());
HttpContext.Current.Response.End();
}
}
Firstly, here is my code:
DataTable usersReport = reportsService.GenerateUsersReport();
var grid = new GridView();
grid.DataSource = usersReport;
grid.DataBind();
Response.ClearContent();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment; filename=UsersReport.xls");
Response.ContentType = "application/ms-excel";
Response.Charset = "";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
grid.RenderControl(htw);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();
As you can see, I just generate in simply way report about users. When I open this file in excel, there is a problem with special chars, like ś,ż,ź,ó,ę,ą etc.
Instead of Imię I can see ImiÄ™.
The same issue with Gyżyński
How can I resolve it?
EDIT:
Add that lines:
Response.Charset = "";
Response.ContentEncoding = System.Text.Encoding.Default;
Now Imię looks like Imiê. In conclusion - still nothing
Did you try this? It could be that the header of the excel file missing the Byte Order Mark(BOM) sequence, try using GetPreamble
Response.Clear();
Response.AddHeader("content-disposition", "attachment; filename=UsersReport.xls");
Response.ContentType = "application/ms-excel";
Response.ContentEncoding = System.Text.Encoding.Unicode;
Response.BinaryWrite(System.Text.Encoding.Unicode.GetPreamble());
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
grid.RenderControl(htw);
Response.Write(sw.ToString());
Response.End();
After a little investigation I discover a solution. Important is <meta> tag for source HTML.
so that line:
Response.Output.Write(sw.ToString());
should looks like:
Response.Output.Write("<meta http-equiv='Content-Type' content='application/vnd.ms-excel; charset=utf-8'>" + sw.ToString());
Following code will Wrk for Speical char and remove null from Excel to
From datatable we are creating Excel which Write Special charater also
The main trick is making it UTF-32 and applying BinaryWrite
public void DataTableToExcel(DataTable dt)
{
string attachment = "attachment; filename=download.xls";
Response.ClearContent();
Response.AddHeader("content-disposition", attachment);
Response.ContentEncoding = System.Text.Encoding.UTF32;
Response.BinaryWrite(System.Text.Encoding.UTF32.GetPreamble());
Response.ContentType = "application/vnd.xls";
string tab = "";
foreach (DataColumn dc in dt.Columns) // table col
{
Response.Write(tab + dc.ColumnName);
tab = "\t";
}
Response.Write("\n");
int i;
string content = "";
foreach (DataRow dr in dt.Rows) // Data Row by row
{
tab = "";
for (i = 0; i < dt.Columns.Count; i++)
{
content = dr[i].ToString();
content = content.Replace(System.Environment.NewLine, " ");
Response.Write(tab + content);
tab = "\t";
}
Response.Write("\n");
}
Response.End();
}
I Use This Code For Convert Grid View To Excel:
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
using (StringWriter sw = new StringWriter())
{
HtmlTextWriter hw = new HtmlTextWriter(sw);
Page.ResponseEncoding = "UTF-8";// System.Text.Encoding.UTF8;
Response.ContentEncoding = System.Text.Encoding.UTF8;
Response.HeaderEncoding = System.Text.Encoding.UTF8;
//To Export all pages
gvProduct.AllowPaging = false;
gvProduct.HeaderRow.BackColor = Color.White;
foreach (TableCell cell in gvProduct.HeaderRow.Cells)
{
cell.BackColor = gvProduct.HeaderStyle.BackColor;
}
foreach (GridViewRow row in gvProduct.Rows)
{
row.BackColor = Color.White;
foreach (TableCell cell in row.Cells)
{
if (row.RowIndex % 2 == 0)
{
cell.BackColor = gvProduct.AlternatingRowStyle.BackColor;
}
else
{
cell.BackColor = gvProduct.RowStyle.BackColor;
}
cell.CssClass = "textmode";
}
}
gvProduct.RenderControl(hw);
//style to format numbers to string
string style = #"<style> .textmode { } </style>";
Response.Write(style);
var a = Response.Output.Encoding;
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();
But When My Grid View Contain Persian Character After Export Those Have not Correct.
I Think When Export, I Should Set Encoding.
Please Help Me.
Thanks.
try this
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition",
"attachment;filename=Export.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView1.AllowPaging = false;
GridView1.DataBind();
GridView1.RenderControl(hw);
//style to format numbers to string
string style = #"<style> .textmode { mso-number-format:\#; } </style> <meta http-equiv='Content-Type' content='text/html; charset=UTF-8'>";
Response.Write(style);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();`