Export Excel File From Dataset In C#?
May 29, 2010i have data in sql server i want to export to data with asp.net C#
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Jan 21, 2011how to Export DataSet to Multiple Excel Sheets and download those file into a zip in C# asp.net?
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Aug 6, 2010I am using the following code to export a datset to excel sheet.
[Code]....
Problem is that its not raising file download and hence no export is taking place.The same code works fine in a normal method.But with the webmethod its not working.
C# - EXPORT Dataset To EXCEL
Feb 12, 2011I am using the following code to export fields from a database table into excel. What I want to do is be able to write a SQL statement to retrieve fields from multiple tables and export them into excel. This code only allows me to export one table. Also, how can I display a save prompt dialog?
protected void export_Click(object sender, EventArgs e)
{
string sql = null;
string data = null;
string path = save_as.Text;
int i = 0;
int j = 0;
Excel.Application xlApp;
Excel.Workbook xlWorkBook;
Excel.Worksheet xlWorkSheet;
object misValue = System.Reflection.Missing.Value;
xlApp = new Excel.ApplicationClass();
xlWorkBook = xlApp.Workbooks.Add(misValue);
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
//connectionString = "data source=servername;initial catalog=databasename;user id=username;password=password;";
SqlConnection cnn = new SqlConnection(GetConnectionString());
cnn.Open();
sql = "SELECT Story, CreationDate FROM Story";
SqlDataAdapter dscmd = new SqlDataAdapter(sql, cnn);
DataSet ds = new DataSet();
dscmd.Fill(ds);
for (i = 0; i <= ds.Tables[0].Rows.Count - 1; i++)
{
for (j = 0; j <= ds.Tables[0].Columns.Count - 1; j++)
{
data = ds.Tables[0].Rows[i].ItemArray[j].ToString();
xlWorkSheet.Cells[i + 1, j + 1] = data;
}
}
xlWorkBook.SaveAs(path+".xls", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
xlWorkBook.Close(true, misValue, misValue);
xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
//MessageBox.Show("Excel file created , you can find the file c:\csharp.net-informations.xls");
}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch (Exception ex)
{
obj = null;
//MessageBox.Show("Exception Occured while releasing object " + ex.ToString());
}
finally
{
GC.Collect();
}
}
Web Forms :: Export A Big Dataset To Excel Via Web?
Feb 24, 2010Actually I have a SQL query that a user exports to excel in our web server. I did it in c# with Visual Studio 2003 (.Net v1.1): I get the data from a SQL server into a Dataset, then with this method I create the XLS file:
private void ExportAsExcelFile ( DataSet dtExport )
{
Response.Clear() ;
Response.ContentType = "application/vnd.ms-excel";
Response.ContentEncoding = System.Text.Encoding.UTF8 ;
Response.Charset = string.Empty ;
Response.AddHeader ( "Content-Disposition", "attachment;filename=data.xls" ) ;
System.IO.StringWriter objStringWriter = new StringWriter () ;
System.Web.UI.HtmlTextWriter objHtmlTextWriter = new System.Web.UI.HtmlTextWriter(objStringWriter) ;
DataGrid objDatagrid = new DataGrid () ;
objDatagrid.DataSource = dtExport ;
objDatagrid.DataBind () ;
objDatagrid.RenderControl ( objHtmlTextWriter ) ;
Response.Write (objStringWriter.ToString()) ;
Response.End () ;
}
Well, this works when the SQL query has 10.000 rows and so on. But now the query has more than 200.000 rows, and I´m getting a TimeOut Error trying to export the data. I read about generate this big files with a Store Procedure and the SQL Commad: BCP [URL], but I tryed and it fails. I have no permissions to execute this command. Is there any other way to export this SQL data to Excel via a ASPX page?
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dataset.table[0] data
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VS 2008 - Export Dataset To Excel Attachment
Jul 12, 2012I need to give users of my asp.net/vb.net web application the ability to click a button which will then send them an e-mail with the contents of a SQL query attached as an Excel e-mail attachment.
I can manage all of this apart from getting the contents of a VB dataset object into an Excel file on my server.
I know how to export a gridview to Excel at the client end, but my boss has been adamant that he wants the button to send an e-mail with the results attached - I have no need to display a gridview at all.
How to export the contents of a datareader or dataset directly into an Excel file at the server side?
Web Forms :: Export The Dataset Values Into Excel In Application
Mar 9, 2011I am trying to Export the dataset values into Excel in my application, its working for first time. Again if i click the export button [second time] the button does't cause postback and the entire page is not postback.
View 4 RepliesC# - Numbers Are Converted As Text When Export Dataset To Excel
Jul 8, 2010Iam exporting dataset to excel , the numbers on the sheet shown as text when export it to excel. Here is the code:
public class Excel
{
const int rowLimit = 65000;
private static string getWorkbookTemplate()
{
StringBuilder sb = new StringBuilder(818);
sb.AppendFormat(@"<?xml version=""1.0""?>{0}", Environment.NewLine);
sb.AppendFormat(@"<?mso-application progid=""Excel.Sheet""?>{0}", Environment.NewLine);
sb.AppendFormat(@"<Workbook xmlns=""urn:schemas-microsoft-com:office:spreadsheet""{0}", Environment.NewLine);
sb.AppendFormat(@" xmlns:o=""urn:schemas-microsoft-com:office:office""{0}", Environment.NewLine);
sb.AppendFormat(@" xmlns:x=""urn:schemas-microsoft-com:office:excel""{0}", Environment.NewLine);
sb.AppendFormat(@" xmlns:ss=""urn:schemas-microsoft-com:office:spreadsheet""{0}", Environment.NewLine);
sb.AppendFormat(@" xmlns:html=""[URL]
sb.AppendFormat(@" <Styles>{0}", Environment.NewLine);
sb.AppendFormat(@" <Style ss:ID=""Default"" ss:Name=""Normal"">{0}", Environment.NewLine);
sb.AppendFormat(@" <Alignment ss:Vertical=""Bottom""/>{0}", Environment.NewLine);
sb.AppendFormat(@" <Borders/>{0}", Environment.NewLine);
sb.AppendFormat(@" <Font ss:FontName=""Verdana"" x:Family=""Swiss"" ss:Size=""12"" ss:Color=""#0000A0""/>{0}", Environment.NewLine);
sb.AppendFormat(@" <Interior/>{0}", Environment.NewLine);
sb.AppendFormat(@" <NumberFormat/>{0}", Environment.NewLine);
sb.AppendFormat(@" <Protection/>{0}", Environment.NewLine);
sb.AppendFormat(@" </Style>{0}", Environment.NewLine);
sb.AppendFormat(@" <Style ss:ID=""s62"">{0}", Environment.NewLine);
sb.AppendFormat(@" <Font ss:FontName=""Calibri"" x:Family=""Swiss"" ss:Size=""11"" ss:Color=""#000000""{0}", Environment.NewLine);
sb.AppendFormat(@" ss:Bold=""1""/>{0}", Environment.NewLine);
sb.AppendFormat(@" </Style>{0}", Environment.NewLine);
sb.AppendFormat(@" <Style ss:ID=""s63"">{0}", Environment.NewLine);
sb.AppendFormat(@" <NumberFormat ss:Format=""Short Date""/>{0}", Environment.NewLine);
sb.AppendFormat(@" </Style>{0}", Environment.NewLine);
sb.AppendFormat(@" </Styles>{0}", Environment.NewLine);
sb.Append(@"{0}
</Workbook>");
return sb.ToString();
}
private static string replaceXmlChar(string input)
{
input = input.Replace("&", "&");
input = input.Replace("<", "<");
input = input.Replace(">", ">");
input = input.Replace(""", """);
input = input.Replace("'", "'");
return input;
}
private static string getCell(Type type, object cellData)
{
Object data = (cellData is DBNull) ? "" : cellData;
if (type.Name.Contains("Int") || type.Name.Contains("Double") || type.Name.Contains("Decimal")) return string.Format("<Cell><Data ss:Type="Number">{0}</Data></Cell>", data);
if (type.Name.Contains("Date") && data.ToString() != string.Empty)
{
return string.Format("<Cell ss:StyleID="s63"><Data ss:Type="DateTime">{0}</Data></Cell>", Convert.ToDateTime(data).ToString("yyyy-MM-dd"));
}
return string.Format("<Cell><Data ss:Type="String">{0}</Data></Cell>", replaceXmlChar(data.ToString()));
}
private static string getWorksheets(DataSet source)
{
StringWriter sw = new StringWriter();
if (source == null || source.Tables.Count == 0)
{
sw.Write("<Worksheet ss:Name="Sheet1">
<Table>
<Row><Cell><Data ss:Type="String"></Data></Cell></Row>
</Table>
</Worksheet>");
return sw.ToString();
}
foreach (DataTable dt in source.Tables)
{
if (dt.Rows.Count == 0)
sw.Write("<Worksheet ss:Name="" + replaceXmlChar(dt.TableName) + "">
<Table>
<Row><Cell ss:StyleID="s62"><Data ss:Type="String"></Data></Cell></Row>
</Table>
</Worksheet>");
else
{
//write each row data
int sheetCount = 0;
for (int i = 0; i < dt.Rows.Count; i++)
{
if ((i % rowLimit) == 0)
{
//add close tags for previous sheet of the same data table
if ((i / rowLimit) > sheetCount)
{
sw.Write("
</Table>
</Worksheet>");
sheetCount = (i / rowLimit);
}
sw.Write("
<Worksheet ss:Name="" + replaceXmlChar(dt.TableName) +
(((i / rowLimit) == 0) ? "" : Convert.ToString(i / rowLimit)) + "">
<Table>");
//write column name row
sw.Write("
<Row>");
foreach (DataColumn dc in dt.Columns)
sw.Write(string.Format("<Cell ss:StyleID="s62"><Data ss:Type="String">{0}</Data></Cell>", replaceXmlChar(dc.ColumnName)));
sw.Write("</Row>");
}
sw.Write("
<Row>");
foreach (DataColumn dc in dt.Columns)
sw.Write(getCell(dc.DataType, dt.Rows[i][dc.ColumnName]));
sw.Write("</Row>");
}
sw.Write("
</Table>
</Worksheet>");
}
}
return sw.ToString();
}
public static string GetExcelXml(DataTable dtInput, string filename)
{
string excelTemplate = getWorkbookTemplate();
DataSet ds = new DataSet();
ds.Tables.Add(dtInput.Copy());
string worksheets = getWorksheets(ds);
string excelXml = string.Format(excelTemplate, worksheets);
return excelXml;
}
public static string GetExcelXml(DataSet dsInput, string filename)
{
string excelTemplate = getWorkbookTemplate();
string worksheets = getWorksheets(dsInput);
string excelXml = string.Format(excelTemplate, worksheets);
return excelXml;
}
public static void ToExcel(DataSet dsInput, string filename, HttpResponse response)
{
string excelXml = GetExcelXml(dsInput, filename);
response.Clear();
response.AppendHeader("Content-Type", "application/vnd.ms-excel");
response.AppendHeader("Content-disposition", "attachment; filename=" + filename);
response.Write(excelXml);
response.Flush();
response.End();
}
public static void ToExcel(DataTable dtInput, string filename, HttpResponse response)
{
DataSet ds = new DataSet();
ds.Tables.Add(dtInput.Copy());
ToExcel(ds, filename, response);
}
}
DataSource Controls :: How To Export The Current DataSet Bound To A Gridview To Excel
Mar 12, 2011I have a GridView populated by an ObjectDataSource. I also have several DropDownLists filtering the ObjectDataSource. I found a link providing a way to export a DataSet (or DataTable) to Excel here:
http://msmvps.com/blogs/deborahk/archive/2009/07/23/writing-data-from-a-datatable-to-excel.aspx
ow I can ensure that filters applied to the ObjectDataSource when the method is called are applied. In short, how can I ensure what the UI is displaying is what the file will include when exported?
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Feb 9, 2010In a page im having multiple data grids with some data tables.How can i export all these to excel sheet without any change in the alignment.
View 6 RepliesForms Data Controls :: How To Export Dataset To Excel When Click Gridview Linkbutton
Jun 28, 2010I want to Export dataset data to excel ,when i click gridview linkbutton.
My Scenior is : Actually i am Passing a parameter from griview linkbutton.Depending on the parameter value .I want to export dataset data to excel.
Data Controls :: Export GridView To Excel And Save Excel File To Folder?
Apr 6, 2014i use this code to export data into word.
Protected Sub Export(sender As Object, e As EventArgs) Handles btn_printexcel.Click
Response.Clear()
Response.Buffer = True
[Code]....
but the export docs will be downloaded into the user computer.
what should i do so that the exported docs is save into the server?
Using Oledb To Export Excel File Returns Empty File
Feb 24, 2010I am using asp.net oledb to export information to excel file. I encounter problems when the information to export becomes too big, in this case the code I have given below, the excel file generated becomes an empty spreadsheet. If I changed the loop to 1123 for insertion of the rows. The generated excel file is fine, 1125 rows, and 4 columns shown. A test program in windows form is also working fine regardless of how many rows.
Code has been simplified, "information ..." in the sql insertion command represents 1803 characters.
ExcelObjConn = "Provider=Microsoft.Ace.OLEDB.12.0;" & _
"Data Source=" & fileName & ";Extended Properties=Excel 12.0 XML"
ExcelConnection = New System.Data.OleDb.OleDbConnection(ExcelObjConn)
ExcelConnection.Open()
Try
SqlCommand = "CREATE TABLE ABC ([row1] text, [row2] text, [row3] text, [row4] text)"
ExcelCommand = New OleDb.OleDbCommand(SqlCommand, ExcelConnection)
ExcelCommand.ExecuteNonQuery()
ExcelCommand.Dispose()
For i As Integer = 0 To 1124
SqlCommand = "Insert into ABC ([row1], [row2], [row3], [row4]) Values ('information...', 'information ...', 'information ...', 'information ...')"
ExcelCommand = New OleDb.OleDbCommand(SqlCommand, ExcelConnection)
ExcelCommand.ExecuteNonQuery()
ExcelCommand.Dispose()
Next
Catch ex As Exception
Finally
If ExcelConnection IsNot Nothing Then
ExcelConnection.Close()
ExcelConnection.Dispose()
End If
End Try
I couldn't find a solution to my problem as well. What I did eventually was to run the process using another separate windows service. The code works perfectly fine running from a windows form or service program, but not asp.net, not sure why.
Crystal Reports :: Export Dataset To Excel From Crystal Report
Dec 17, 2010I want to export dataset to Excel. I did the following ways:
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Forms Data Controls :: Export Data To Excel And Set Excel File Column Format?
Sep 1, 2010i have try to export data to excel using gridview.
I have export it successfully but some data is missing which is due to the column format in the exported excel file is not TEXT .
[Code]....
I need to set the exported excel file column format to TEXT but find no solution on this.
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May 18, 2010I need a code which can export the data from XML file to the Excel file.
View 3 RepliesHow To Fill Dataset From That Excel File
May 14, 2010I have excel file.I want to fill dataset from that excel file & Have to fill the database. I m able to read the excel file,but there is one problem with column whose datatype is Date.
[Code]....
I have attached the excel file (Pic1).
In Pic2,I have attached the snapshot of dataset that is filled.
How O Export Data From SQL Server To Excel File
Apr 26, 2010I have tried using GridView control to display the data from SqlDataSource control but there are just so many columns and one of the fields contains a lot of texts so using GridView control to display the data does not look look since it goes out of the master template. I have tried using GridView control to display my data and use the following code to export as Excel but in case, there are just so many columns.
[Code]....
What are some other better ways to export to Excel file from my web page?
Export The Gridview Data Into An Excel File?
Nov 15, 2010I am working in a project where i need to export the Gridview data into an Excel file. after that in the newly geretated excel sheet i want to put some formula so that it gives the sum of all the columns. Exporting data into an excel file is done Using following code
[Code]....
how can i enter formula dynamically in excel sheet.
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Jan 18, 2010i have someecords in grid i want ot export in excel file . i use code like below
protected void btnExportDB_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.ContentType = "application/vnd.ms-excel";
Page.EnableViewState = false;
Response.Charset = "";
Response.AddHeader("Content-Disposition", "inline;filename=voucher.xls");
System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
grdMembers.RenderControl(oHtmlTextWriter);
Response.Write(oStringWriter.ToString());
Response.End();
}
on use this code on button click event.. file is generating but when i use same file for import in to database It gave me Error : External table is not in the expected format. For prob. of Format Type for Excel.
Data Controls :: How To Export Gridview To Excel File
May 7, 2012[URL] .... I use this article for exporting gridview to Excel in asp.net - c#.....but i found some error in my code
i am using stored procedure for sql command and my code behind is as follows....
C# code
public partial class Admin_ResultDisplay : System.Web.UI.Page {Â Â Â
SqlConnection cn;Â protected void Page_Load(object sender, EventArgs e)Â {Â Â Â Â Â Â Â
cn = new SqlConnection(ConfigurationManager.ConnectionStrings["DbConnect"].ConnectionString);Â
//string strQuery = "select CustomerID,City,Country,PostalCode from customers";Â
//SqlCommand cmd = new SqlCommand(strQuery);Â Â Â Â Â Â Â
[Code] ....
How can I pass sql command at page_load event ? ?
C# - Exporting Dataset To Excel File With Multiple Sheets?
Apr 2, 2010In C# ASP.NET 3.5 web application, I need to export multiple datatables (or a dataset) to an Excel 2007 file with multiple sheets, and then provide the user with 'Open/Save' dialog box, WITHOUT saving the Excel file on the web server.
I have used Excel Interop before. I have been reading that it's not efficient and is not the best approach to achieve this and there are more ways to do it, 2 of them being: 1) Converting data in datatables to an XML string that Excel understands 2) Using OPEN XML SDK 2.0.
It looks like OPEN XML SDK 2.0 is better, please let me know. Are there any other ways to do it? I don't want to use any third-party tools.
If I use OPEN XML SDK, it creates an excel file, right? I don't want to save it on the (Windows 2003) server hard drive (I don't want to use Server.MapPath, these Excel files are dynamically created, and they are not required on the server, once client gets them). I directly want to prompt the user to open/save it. I know how to do it when the 'XML string' approach is used.
