wrong output when transfering datagrid to word/excel/pdf - asp.net

Question

hye, i have made this code which i have tried separately from my current web and it work perfectly but when i combine it with my web, i didn't get the output that was generated in the gridview. here is the code that i had used.
protected void Wordbtn_Click(object sender, EventArgs e)
{
if (maxdata.Checked == true)
{
wordmax();
}
if (curdata.Checked == true)
{
wordcur();
}
}
protected void excelbtn_Click(object sender, EventArgs e)
{
if (maxdata.Checked == true)
{
excelmax();
}
if (curdata.Checked == true)
{
excelcur();
}
}
protected void pdfbtn_Click(object sender, EventArgs e)
{
if (maxdata.Checked == true)
{
pdfmax();
}
if (curdata.Checked == true)
{
pdfcur();
}
}
public void wordmax()
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=MaxdataExport.doc");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-word ";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
gridmaxdata.AllowPaging = false;
gridmaxdata.DataBind();
gridmaxdata.RenderControl(hw);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();
}
public void wordcur()
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=CurrentDataExport.doc");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-word ";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
gridcurdata.AllowPaging = false;
gridcurdata.DataBind();
gridcurdata.RenderControl(hw);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();
}
public void excelmax()
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition",
"attachment;filename=MaxDataExport.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
gridmaxdata.AllowPaging = false;
gridmaxdata.DataBind();
//Change the Header Row back to white color
gridmaxdata.HeaderRow.Style.Add("background-color", "#FFFFFF");
gridmaxdata.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();
Response.End();
}
public void excelcur()
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition",
"attachment;filename=CurrentdataExport.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
gridcurdata.AllowPaging = false;
gridcurdata.DataBind();
//Change the Header Row back to white color
gridcurdata.HeaderRow.Style.Add("background-color", "#FFFFFF");
gridcurdata.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();
Response.End();
}
public void pdfmax()
{
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=MaxDataExport.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
gridmaxdata.AllowPaging = false;
gridmaxdata.DataBind();
gridmaxdata.RenderControl(hw);
StringReader sr = new StringReader(sw.ToString());
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
pdfDoc.Open();
htmlparser.Parse(sr);
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();
}
public void pdfcur()
{
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=CurrentdataExport.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
gridcurdata.AllowPaging = false;
gridcurdata.DataBind();
gridcurdata.RenderControl(hw);
StringReader sr = new StringReader(sw.ToString());
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
pdfDoc.Open();
htmlparser.Parse(sr);
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();
}
this is the code that i used to create the datagridview
public void maxdatatable()
{
string connectionString = "Data Source=.\\SQLEXPRESS;AttachDbFilename=C:\\inetpub\\wwwroot\\webradiation\\App_Data\\Radiation.mdf;Integrated Security=True;User Instance=True";
//Bind SQLDataSource to GridView for max data
// Create SQLDataSource.
SqlDataSource sqlDataSource1 = new SqlDataSource();
sqlDataSource1.ID = "SqlDataSource123";
this.Page.Controls.Add(sqlDataSource1);
// Bind ConnectionString to SQLDataSource.
sqlDataSource1.ConnectionString = connectionString;
// Retrieve records
sqlDataSource1.SelectCommand = "SELECT top 30 [date], [data] FROM [loc1] WHERE (([data] >= '2') AND (([date] >= '" + combdatetime11.ToString() + "') AND ([date] <= '" + combdatetime21.ToString() + "'))) ORDER BY [data] DESC, [date] DESC";
gridmaxdata.DataSource = sqlDataSource1;
gridmaxdata.DataBind();
}
public void currdata()
{
string connectionString = "Data Source=.\\SQLEXPRESS;AttachDbFilename=C:\\inetpub\\wwwroot\\webradiation\\App_Data\\Radiation.mdf;Integrated Security=True;User Instance=True";
// Create SQLDataSource.
SqlDataSource sqlDataSource2 = new SqlDataSource();
sqlDataSource2.ID = "SqlDataSource12";
this.Page.Controls.Add(sqlDataSource2);
// Bind ConnectionString to SQLDataSource.
sqlDataSource2.ConnectionString = connectionString;
// Retrieve records
sqlDataSource2.SelectCommand = "SELECT [date], [data] FROM [loc1] WHERE (([date] >= '" + combdatetime11.ToString() + "') AND ([date] < '" + combdatetime21.ToString() + "'))";
gridcurdata.DataSource = sqlDataSource2;
gridcurdata.DataBind();
}
for the word document, the output that i got is
(div) (/div)
*i have to used "(" and ")" to replace "<" and ">" because this pageweb make it disappear
the excel is like this
(style) .textmode { mso-number-format:\#; } (/style)(div)(div)
the pdf file i got an error saying that the document does not have pages.
do you not where did i do wrong?

Answer 1

you can create a extension function to convert the datasource datatable to excel and then send it to client using Response.WriteFile method
using OfficeOpenXml;
public static class Extensions
{
public static void ToExcel(this DataTable source, string destinationXlsxPath)
{
using (ExcelPackage pck = new ExcelPackage())
{
ExcelWorksheet ws = pck.Workbook.Worksheets.Add("Data");
ws.Cells["A1"].LoadFromDataTable(source, true);
FileInfo file = new FileInfo(destinationXlsxPath);
pck.SaveAs(file);
}
}
}
EPPlus: http://epplus.codeplex.com/