I have a gridview with paging and sorting allowed, which I'm exporting to an excel file as follows.
Response.Clear();
Response.Buffer = true;
string filename="GridViewExport_"+DateTime.Now.ToString()+".xls";
Response.AddHeader("content-disposition",
"attachment;filename="+filename);
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView1.AllowPaging = false;
GridView1.AllowSorting = false;
GridView1.DataBind();
GridView1.RenderControl(hw);
Response.Write(style);
Response.Output.Write(sw.ToString());
GridView1.AllowPaging = true;
GridView1.AllowSorting = true;
GridView1.DataBind();
Response.Flush();
Response.End();
After the export, the paging and rowcommands are not working. When I click on a page index or a link in a row, the excel file is downloaded again. Can anyone suggest how to resolve this issue?
Thanks.
Related
I have a web application that exports data from a gridview to Excel. It works fine in Chrome but doesn't work in IE 11 and Firefox. I see a lot of issues with this when I google it but this error seems to be unique.
protected void ExportToExcel(List<MapAmericas.Model.Project> Projects)
{
Response.Clear();
Response.Buffer = true;
Response.ContentType = "application/vnd.ms-excel";
Response.ContentEncoding = System.Text.Encoding.Unicode;
Response.AddHeader("content-disposition", "attachment;filename=MyFile" + DateTime.Now.ToString() + ".xls");
Response.Charset = "";
Response.BinaryWrite(System.Text.Encoding.Unicode.GetPreamble());
this.EnableViewState = false;
System.IO.StringWriter sw = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw);
GridView gv = new GridView();
gv.AutoGenerateColumns = false;
gv.RowDataBound += new GridViewRowEventHandler(dataExportExcel_ItemDataBound);
gv.DataSource = Projects;
gv.DataBind();
gv.RenderControl(htw);
Response.Write(AddExcelStyling()); //this contains the opening html elements
StringBuilder sbResponseString = new StringBuilder();
sbResponseString.Append(sw + "</body></html>");
Response.Write(sbResponseString.ToString());
Response.Flush();
Response.Close();
Response.End();
}
...and the issue I'm getting has to do with not being able to access Temporary Internet Files. I get a popup "Problems during Load" and about a dozen entries: "Missing File...Temporary Internet Files\Content\" and then I get a message reading "Unable to read file".
I had an image to represent the error but I'm not able to upload images.
When I click on one of the links, it loads up my webpage without any styles and I don't get an excel file.
Does anyone know what the issue would be?
I got it! I added 2 lines of code to my existing code and it works. See lines marked with **:
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.Buffer = true;
//HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
HttpContext.Current.Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.Unicode;
HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename=Panorama_Project-" + DateTime.Now.ToString() + ".xls");
HttpContext.Current.Response.Charset = "";
HttpContext.Current.Response.BinaryWrite(System.Text.Encoding.Unicode.GetPreamble());
this.EnableViewState = false;
System.IO.StringWriter sw = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw);
GridView gv = new GridView();
gv.AutoGenerateColumns = false;
gv.RowDataBound += new GridViewRowEventHandler(dataExportExcel_ItemDataBound);
gv.DataSource = Projects;
gv.DataBind();
gv.RenderControl(htw);
HttpContext.Current.Response.Write(AddExcelStyling());
StringBuilder sbResponseString = new StringBuilder();
sbResponseString.Append(sw + "</body></html>");
**HttpContext.Current.Response.AddHeader("Content-Length", sbResponseString.Length.ToString());**
HttpContext.Current.Response.Write(sbResponseString.ToString());
//HttpContext.Current.Response.Flush();
//HttpContext.Current.Response.Close();
//HttpContext.Current.Response.End();
**System.Web.HttpContext.Current.ApplicationInstance.CompleteRequest();**
It seems as though it was trying to display the entire Response object which included my page and all linked resources. The Content-Length and replacing Reponse.End and Response.Flush with System.Web.HttpContext.Current.ApplicationInstance.CompleteRequest() seems to do the trick.
This is the simplified version of an Export To Excel function (for a datatable) that I use and one that works for all the browsers. See if this helps. The code is quite similar to yours though:
public void ExportDataToExcel(String FileName, DataTable dtData)
{
// get gridview out of datatable
GridView gv = new GridView();
gv.AllowPaging = false;
gv.DataSource = dtData;
gv.DataBind();
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.Buffer = true;
HttpContext.Current.Response.AddHeader("content-disposition",
"attachment;filename=" + FileName + ".xls");
HttpContext.Current.Response.Charset = "";
HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
for (int i = 0; i < gv.Rows.Count; i++)
{
// Apply text style to each Row
gv.Rows[i].Attributes.Add("class", "textmode");
}
gv.RenderControl(hw);
HttpContext.Current.Response.Output.Write(sw.ToString());
// commenting this out to resolve this error
// System.Web.HttpException: The remote host closed the connection.
// The error code is 0x800703E3.
// HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End();
}
I am using the following code to convert gridview to ms-excel format. The problem is this if i use following code one 1st page is converted into ms-ecxel
protected void Button1_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
string file1 = TextBox1.Text + ".xls";
string attachment = string.Format("attachment;filename={0}", file1);
this.EnableViewState = false;
Response.AddHeader("content-disposition", attachment);
Response.Charset = "";
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.ContentType = "application/ms-excel";
using (StringWriter sw = new StringWriter())
{
HtmlTextWriter htw = new HtmlTextWriter(sw);
GridView1.RenderControl(htw);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();
}
}
and if add these two lines to my code i"ll get blank ms-excel sheet
GridView1.AllowPaging = false;
this.Emp_Wrklog();
please do the needful changes in my code so that i can cnvert my gridview having paging into excel. Thanks in advance.
You should definitely use EPPlus library or something like that for manipulating excel files.
http://epplus.codeplex.com/
I am working on a project, where I want to download gridview row data, but it is not working for me. Here is the code i used for download:
string fileName = "chhattisgarhishafte" + DateTime.Now.ToString() + ".doc";
GridView1.DataSource = dtD;
GridView1.DataBind();
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=" + fileName);
Response.Charset = "";
Response.ContentType = "application/vnd.ms-word ";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView1.AllowPaging = false;
GridView1.DataBind();
GridView1.RenderBeginTag(hw);
GridView1.RenderControl(hw);
Response.Output.Write(sw.ToString());
GridView1.RenderEndTag(hw);
Response.Flush();
Response.End();
stD is datatble which stores the gridview selected rows.
The errror is:
Control 'ctl00_ContentPlaceHolder1_GridView1' of type 'GridView' must be placed inside a form tag with runat=server.
Please use in form tag in the master page use runat="server"
use this code,its working in my application
if (gv.Rows.Count > 0)
{
StringWriter tw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(tw);
//Get the HTML for the control.
gv.RenderControl(hw);
//Write the HTML back to the browser.
//Response.ContentType = application/vnd.ms-excel;
Response.ContentType = "application/vnd.ms-excel";
Response.AppendHeader("Content-Disposition", "attachment; filename=" + strFileName);
EnableViewState = false;
Response.Write(tw.ToString());
Response.End();
}
I am generating excel file and it working fine in local host but not working in IIS.I have a model pop up from where i open pop up window using window.open method where following code is written to generate excel file.
public void GenerateExcelFile(DataTable dt)
{
Response.Clear();
Response.Buffer = true;
string filename = "abc.xls";
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
Response.AddHeader("content-disposition", "attachment; filename=" + filename);
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
GridView gv = new GridView();
gv.AutoGenerateColumns = true;
gv.DataSource = dt;
gv.DataBind();
gv.RenderControl(hw);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();
}
Please help me to resolve issue.
Recently we where trying to do this, we ended up using this lovely little library: EPPlus
It made the whole process of making our sheets very easy, clean and efficient. Hopefully it will provide a solution to your problem.
I am working on asp.net 4.0 web application development using c#. I am trying to export the Gridview data to ms word document. I have used the following code.
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=MyWord.doc");
Response.ContentEncoding = System.Text.Encoding.UTF7;
Response.ContentType = "application/vnd.word";
System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
this.GridView1.RenderControl(oHtmlTextWriter);
Response.Output.Write(oStringWriter.ToString());
Response.Flush();
Response.End();
The application is running without problems but it returns the data in word like
+ADw-div+AD4- +ADw-table cellspacing+AD0AIg-0+ACI- cellpadding+AD0AIg-4+ACI- id+AD0AIg-GridView1+ACI- style+AD0AIg-color:+ACM-333333+ADs-border-collapse:collapse+ADsAIgA+- +ADw-tr style+AD0AIg-color:White+ADs-background-color:+ACM-507CD1+ADs-font-weight:bold+ADsAIgA+- +ADw-th scope+AD0AIg-col+ACIAPg-FileId+ADw-/th+AD4APA-th scope+AD0AIg-col+ACIAPg-PortalId+ADw-/th+AD4APA-th scope+AD0AIg-col+ACIAPg-FileName+ADw-/th+AD4APA-th scope+AD0AIg-col+ACIAPg-Extension+ADw-/th+AD4APA-th scope+AD0AIg-col+ACIAPg-Size+ADw-/th+AD4APA-th scope+AD0AIg-col+ACIAPg-Width+ADw-
I know it is much similar to html but how could i convert this into actual one. guide me.
this is works for me it requires itextsharp.dll
string FName = "filename.doc";
mygrid.AllowPaging = false;
mygrid.DataSource = datasource();
mygrid.DataBind();
Response.ClearContent();
Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", FName));
Response.Charset = "";
Response.ContentType = "application/ms-word";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
mygrid.RenderControl(htw);
Response.Write(sw.ToString());
Response.End();