I want to create Excel Sheet in asp.net. I have already done code for this and it is working fine in local system but when I am testing it on server then it gives the following error.
Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80070005.
My code is.
private static System.Data.DataTable GetDataSet()
{
System.Data.DataTable dt = new System.Data.DataTable("Table");
dt.Columns.Add("Name", Type.GetType("System.String"));
dt.Columns.Add("Address", Type.GetType("System.String"));
dt.Columns.Add("Phone", Type.GetType("System.String"));
DataRow dr = dt.NewRow();
dr["Name"] = "Balaji Selvarajan";
dr["Address"] = "Reddiyur";
dr["Phone"] = "000-000-0000";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr["Name"] = "Balaji S";
dr["Address"] = "Kattumannar Koil";
dr["Phone"] = "000-000-0000";
dt.Rows.Add(dr);
return dt;
}
private static void DataSetToExcel(System.Data.DataTable dt, Boolean generateIdentity)
{
try
{
string Filename = HttpContext.Current.Server.MapPath("~/Doc/") + "Test.xls";
string imagepath1 = HttpContext.Current.Server.MapPath("~/Doc/") + "Test.xls";
FileInfo fi = new FileInfo(HttpContext.Current.Server.MapPath("~/Doc/") + "Test.xls");
if (fi.Exists)
{
fi.Delete();
}
Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
xlApp.Visible = false;
Microsoft.Office.Interop.Excel.Workbook wb = xlApp.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
object misValue = System.Reflection.Missing.Value;
Microsoft.Office.Interop.Excel.Worksheet ws = (Microsoft.Office.Interop.Excel.Worksheet)wb.Worksheets.Add(misValue, misValue, misValue, misValue);
ws.Name = "Test";
for (int i = 0; i < dt.Rows.Count; i++)
{
for (int j = 0; j < dt.Columns.Count; j++)
{
if (i == 0)
ws.Cells[1, j + 1] = dt.Columns[j].ColumnName;
ws.Cells[i + 2, j + 1] = dt.Rows[i][j].ToString();
}
ws.Protect("1235", true, true, true, true, true, true, true, true, true, true, true, true, true, true, true);
}
wb.Protect("my", true, true);
wb.Password = "1235";
wb.SaveAs(Filename, Microsoft.Office.Interop.Excel.XlFileFormat.xlWorkbookNormal, "1235", misValue, misValue, misValue, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
wb.Close(true, misValue, misValue);
xlApp.Visible = true;
xlApp.Quit();
System.Runtime.InteropServices.Marshal.ReleaseComObject(xlApp);
HttpContext.Current.Response.ContentType = "Application/Excel";
string FilePath = imagepath1;
HttpContext.Current.Response.WriteFile(FilePath);
HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=Test.xls");
HttpContext.Current.Response.End();
}
catch (Exception ex)
{
throw ex;
}
}
protected void BtnDn_Click(object sender, EventArgs e)
{
DataSetToExcel(GetDataSet(), false);
}
I am not able to solve this problem please help me. and give me solution as soon as possible please.
I am using Asp.net C#.
Try with this
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Office = Microsoft.Office.Core;
using Excel = Microsoft.Office.Interop.Excel;
namespace Excel
{
public class ExcelUtlity
{
public bool WriteDataTableToExcel(System.Data.DataTable dataTable, string worksheetName, string saveAsLocation, string ReporType) {
Microsoft.Office.Interop.Excel.Application excel;
Microsoft.Office.Interop.Excel.Workbook excelworkBook;
Microsoft.Office.Interop.Excel.Worksheet excelSheet;
Microsoft.Office.Interop.Excel.Range excelCellrange;
try
{
// Start Excel and get Application object.
excel = new Microsoft.Office.Interop.Excel.Application();
// for making Excel visible
excel.Visible = false;
excel.DisplayAlerts = false;
// Creation a new Workbook
excelworkBook = excel.Workbooks.Add(Type.Missing);
// Workk sheet
excelSheet = (Microsoft.Office.Interop.Excel.Worksheet)excelworkBook.ActiveSheet;
excelSheet.Name = worksheetName;
excelSheet.Cells[1, 1] = ReporType;
excelSheet.Cells[1, 2] = "Date : " + DateTime.Now.ToShortDateString();
// loop through each row and add values to our sheet
int rowcount = 2;
foreach (DataRow datarow in dataTable.Rows)
{
rowcount += 1;
for (int i = 1; i <= dataTable.Columns.Count; i++)
{
// on the first iteration we add the column headers
if (rowcount == 3)
{
excelSheet.Cells[2, i] = dataTable.Columns[i-1].ColumnName;
excelSheet.Cells.Font.Color = System.Drawing.Color.Black;
}
excelSheet.Cells[rowcount, i] = datarow[i-1].ToString();
//for alternate rows
if (rowcount > 3)
{
if (i == dataTable.Columns.Count)
{
if (rowcount % 2 == 0)
{
excelCellrange = excelSheet.Range[excelSheet.Cells[rowcount, 1], excelSheet.Cells[rowcount, dataTable.Columns.Count]];
FormattingExcelCells(excelCellrange, "#CCCCFF", System.Drawing.Color.Black,false);
}
}
}
}
}
// now we resize the columns
excelCellrange = excelSheet.Range[excelSheet.Cells[1, 1], excelSheet.Cells[rowcount, dataTable.Columns.Count]];
excelCellrange.EntireColumn.AutoFit();
Microsoft.Office.Interop.Excel.Borders border = excelCellrange.Borders;
border.LineStyle = Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous;
border.Weight = 2d;
excelCellrange = excelSheet.Range[excelSheet.Cells[1, 1], excelSheet.Cells[2, dataTable.Columns.Count]];
FormattingExcelCells(excelCellrange, "#000099", System.Drawing.Color.White, true);
//now save the workbook and exit Excel
excelworkBook.SaveAs(saveAsLocation);;
excelworkBook.Close();
excel.Quit();
return true;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return false;
}
finally
{
excelSheet = null;
excelCellrange = null;
excelworkBook = null;
}
}
/// FUNCTION FOR FORMATTING EXCEL CELLS
public void FormattingExcelCells(Microsoft.Office.Interop.Excel.Range range, string HTMLcolorCode, System.Drawing.Color fontColor, bool IsFontbool)
{
range.Interior.Color=System.Drawing.ColorTranslator.FromHtml(HTMLcolorCode);
range.Font.Color = System.Drawing.ColorTranslator.ToOle(fontColor);
if (IsFontbool == true)
{
range.Font.Bold = IsFontbool;
}
}
}
Error 80070005 is an Access Denied error. Try configuring your AppPool to run under LocalSystem (instead of ApplicationPoolIdentity), or try granting permissions for Excel in Component Services:
From the Start menu, click Run and type Dcomcnfg.exe.
In Component Services, click Console root, expand Component Services, expand Computers, expand My computer,expand DCOMConfig.
Search for Microsoft Word 14.0 Object Library. Click on it.
Right click and select Properties.
On security tab, select Customize in "Launch and Activation" section.
Click edit and add identity of app pool under which you application is running.
Repeat above step for "Access Permission"
AppPool account solution is from here: "Retrieving the COM class factory for component.... error: 80070005 Access is denied." (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)).
Component Services Permission answer is from here: Retrieving the COM class factory for component with CLSID failed due to the following error: 80070005 Access is denied.
Related
I don't get the error that appears in my export to excel code. I have this error
Unable to cast COM object of type 'System.__ComObject' to interface
type 'Microsoft.Office.Interop.Excel.Range'. This operation failed
because the QueryInterface call on the COM component for the interface
with IID '{00020846-0000-0000-C000-000000000046}' failed due to the
following error: No such interface supported (Exception from HRESULT:
0x80004002 (E_NOINTERFACE)).
Here is the code in my gridview, my gridview's name is dgvCommission.
void worker_DoWork(object sender, DoWorkEventArgs e)
{
try
{
timer.Elapsed += new System.Timers.ElapsedEventHandler(timer_elapsed);
timer.Start();
Invoke(new MyDelegate(ShowLabel), "Loading...");
BACS.DateFrom = this.dtFrom.Value.ToShortDateString(); //this.dtFrom.Text;
BACS.DateTo = this.dtTo.Value.ToShortDateString(); //this.dtTo.Text;
BACS.BrokerAgent = BrokerXML;
BACS.Payor = PayorXML;
DS = BACS.GET_SP_BACS_ComputeCommission();
ReadData(DS, this.dgvCommision);
CheckGrid();
Thread.Sleep(1);
timer.Stop();
}
catch
{ }
}
And here is my export to excel code in my form.
private void ExportToExcel()
{
string[] arrays = new string[19];
arrays[0] = "Type";
arrays[1] = "Broker Agent";
arrays[2] = "Payor";
arrays[3] = "Billing #";
arrays[4] = "OR No.";
arrays[5] = "OR Date";
arrays[6] = "Particulars";
arrays[7] = "Mode";
arrays[8] = "Amount Billed";
arrays[9] = "Amount Paid";
arrays[10] = "Non Comm Items";
arrays[11] = "Net";
arrays[12] = "Output VAT";
arrays[13] = "Commissionable Amount";
arrays[14] = "WTAX Rate";
arrays[15] = "WTAX";
arrays[16] = "Net Commission";
arrays[17] = "InputVAT";
arrays[18] = "For Fund Release";
SystemUtil.ExportToExel(DS, arrays);
}
ExportToExcel class code is this:
public void ExportToExel(DataSet ds,string[] arrays)
{
Excel.Application oXL;
Excel.Workbook oWB;
Excel.Worksheet oSheet;
//Excel.Range oRange;
oXL = new Excel.Application();
// Set some properties
oXL.Visible = true;
oXL.DisplayAlerts = false;
// Get a new workbook.
oWB = oXL.Workbooks.Add(Missing.Value);
// Get the active sheet
oSheet = (Excel.Worksheet)oWB.ActiveSheet;
oSheet.Name = "EXCEL";
DataTable dt2 = new DataTable();
if (ds.Tables[0] != null)
{
dt2 = ds.Tables[0];
}
int rowCount = 1;
foreach (DataRow dr in dt2.Rows)
{
rowCount += 1;
for (int i = 1; i < dt2.Columns.Count + 1; i++)
{
if (rowCount == 2)
{
oSheet.Cells[1, i] = arrays[i - 1];// dt.Columns[i - 1].ColumnName;
// oSheet.Cells[1,i].Font.Background = System.Drawing.Color.Red;
}
oSheet.Cells[rowCount, i] = dr[i - 1].ToString();
}
}
////// Resize the columns
//oRange = oSheet.get_Range(1, 23);
////oRange.EntireColumn.AutoFit();
//oRange.Range[1, 2].AutoFit();
// Save the sheet and close
oSheet = null;
// oRange = null;
//oWB.SaveAs(#"c:\REPORTS.xls", Excel.XlFileFormat.xlWorkbookNormal,
// Missing.Value, Missing.Value, Missing.Value, Missing.Value,
// Excel.XlSaveAsAccessMode.xlExclusive,
// Missing.Value, Missing.Value, Missing.Value,
// Missing.Value, Missing.Value);
//oWB.Close(Missing.Value, Missing.Value, Missing.Value);
//oWB = null;
//oXL.Quit();
// Clean up
// NOTE: When in release mode, this does the trick
GC.WaitForPendingFinalizers();
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
}
The exception error pops up in this code. oSheet.Cells[1, i] = arrays[i - 1];
Do you guys know how can this happen? I don't understand what's wrong in my code.. Please help me on this one. Thanks in advance for your help.
Try changing
oSheet = (Excel.Worksheet)oWB.ActiveSheet;
To
oSheet = (Excel.Worksheet)oXL.ActiveSheet;
Further explanation: MSDN provides the following note regarding the Workbook Interface....
"This interface is implemented by the Visual Studio Tools for Office runtime. It is not intended to be implemented in your code. For more information, see Visual Studio Tools for Office Runtime Overview."
That's why you have to reference the application interface after initializing a new workbook.
Please mark this as answered if it resolved your question.
i am using Interop.Excel to export data from datatable and generate line chart too.
i could successfully export data to excel from data like this way
public static bool Export(System.Data.DataTable dt, string sheetName)
{
object Missing = System.Reflection.Missing.Value;
Excel.Application oXL;
Excel.Workbook oWB;
Excel.Worksheet oSheet;
Excel.Range oRange;
try
{
// Start Excel and get Application object.
oXL = new Excel.Application();
// Set some properties
oXL.Visible = false;
oXL.DisplayAlerts = false;
// Get a new workbook.
oWB = oXL.Workbooks.Add(Missing);
// Get the Active sheet
oSheet = (Excel.Worksheet)oWB.ActiveSheet;
oSheet.Name = sheetName;
oSheet.Cells[1, 1] = "Daily Finished Job History " + DateTime.Now.ToString("dd/MM/yyyy");
oSheet.get_Range("A1", "A1").ColumnWidth = 13;
oSheet.get_Range("B1", "B1").ColumnWidth = 13;
oSheet.get_Range("C1", "C1").ColumnWidth = 25;
oSheet.get_Range("A1", "C1").Font.Size = 14;
oSheet.get_Range("A1", "C1").Font.Bold = true;
oSheet.get_Range("A1", "C1").Merge(true);
oSheet.get_Range("A1", "C1").Cells.HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter;
oSheet.get_Range("A3", "C3").Font.Bold = true;
int rowCount = 3;
for (int i = 1; i < dt.Columns.Count + 1; i++)
{
oSheet.Cells[rowCount, i] = dt.Columns[i - 1].ColumnName;
}
foreach (DataRow dr in dt.Rows)
{
rowCount += 1;
for (int i = 1; i < dt.Columns.Count + 1; i++)
{
oSheet.Cells[rowCount, i] = dr[i - 1].ToString();
}
}
// Resize the columns
oRange = oSheet.get_Range(oSheet.Cells[1, 1],
oSheet.Cells[rowCount, dt.Columns.Count]);
//oRange.EntireColumn.AutoFit();
// Save the sheet and close
oSheet = null;
oRange = null;
string strParentDirectory = GetParentDirectory();
strParentDirectory = strParentDirectory + "\\Data";
if (!Directory.Exists(strParentDirectory))
{
Directory.CreateDirectory(strParentDirectory);
}
string strFileName = strParentDirectory + "\\DailyFinishedJobHistory_" + DateTime.Now.ToString("yyyyMMdd") + ".xls";
if (File.Exists(strFileName))
{
File.Delete(strFileName);
}
FileStream file = new FileStream(strFileName, FileMode.Create);
file.Close();
oWB.SaveAs(strFileName, Excel.XlFileFormat.xlWorkbookNormal,
Missing, Missing, Missing, Missing,
Excel.XlSaveAsAccessMode.xlExclusive,
Missing, Missing, Missing,
Missing, Missing);
oWB.Close(Missing, Missing, Missing);
oWB = null;
oXL.Quit();
}
catch
{
throw;
}
finally
{
// Clean up
// NOTE: When in release mode, this does the trick
GC.WaitForPendingFinalizers();
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
}
return true;
}
public static string GetParentDirectory()
{
System.IO.DirectoryInfo myDirectory = new DirectoryInfo(Environment.CurrentDirectory);
return myDirectory.Parent.Parent.FullName;
}
now i want to generate chart in same sheet based on data from my datatable.
my excel file would look like as follows
i read few article & code to generate chart from this links
http://www.dotnetbull.com/2011/09/exporting-pie-chart-into-excel-file.html
http://csharp.net-informations.com/excel/csharp-excel-chart.htm
http://www.daniweb.com/software-development/csharp/threads/80834/c-and-excel-chart-ranges
but still not being able to understand the code to generate line chart. it would be great help if some help me to generate chart in same sheet like the image i have given here.
thanks
Try this as a starting point:
'Create & Format Chart
Dim oChart As Excel.Chart
oChart = oXL.Parent.Charts.Add
With oChart
.Name = "History"
.HasTitle = True
.ChartTitle.Font.ColorIndex = 11
.ChartTitle.Font.Bold = True
.ChartTitle.Font.Size = 12
.ChartTitle.Font.Name = "Arial"
.ChartTitle.Text = "Job History"
.ChartType = Excel.XlChartType.xlLine
.HasLegend = True
.SeriesCollection(1).XValues = "=Sheet1!$A$4:$A$6"
.SeriesCollection(1).Name = "=Sheet1!$B$3"
.SeriesCollection(2).Name = "=Sheet1!$C$3"
.SeriesCollection(3).Name = "=Sheet1!$D$3"
End With
i am working on excel import to grid view using DataTable in c#, but my problem is its working fine on my local system but its redirecting to login page on my online server and i have tried both Microsoft.Office.Interop.Excel & OLEdb connection. but the problem is same. please tell me what is the problem with these or any one have any other function to import Excel data in GridView.
private void processExcel(string filename)
{
filename = Server.MapPath("~/Files/WM-0b23-productsBook.xlsx");
Microsoft.Office.Interop.Excel.Application xlApp;
Microsoft.Office.Interop.Excel.Workbook xlWorkBook;
Microsoft.Office.Interop.Excel.Worksheet xlWorkSheet;
var missing = System.Reflection.Missing.Value;
xlApp = new Microsoft.Office.Interop.Excel.Application();
xlWorkBook = xlApp.Workbooks.Open(filename, false, true, missing, missing, missing, true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, '\t', false, false, 0, false, true, 0);
xlWorkSheet = (Microsoft.Office.Interop.Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
Microsoft.Office.Interop.Excel.Range xlRange = xlWorkSheet.UsedRange;
Array myValues = (Array)xlRange.Cells.Value2;
int vertical = myValues.GetLength(0);
int horizontal = myValues.GetLength(1);
System.Data.DataTable dt = new System.Data.DataTable();
// must start with index = 1
// get header information
for (int i = 1; i <= horizontal; i++)
{
dt.Columns.Add(new DataColumn(myValues.GetValue(1, i).ToString()));
}
// Get the row information
for (int a = 2; a <= vertical; a++)
{
object[] poop = new object[horizontal];
for (int b = 1; b <= horizontal; b++)
{
poop[b - 1] = myValues.GetValue(a, b);
}
DataRow row = dt.NewRow();
row.ItemArray = poop;
dt.Rows.Add(row);
}
// assign table to default data grid view
GridView1.DataSource = dt;
GridView1.DataBind();
xlWorkBook.Close(true, missing, missing);
xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch (Exception ex)
{
obj = null;
MessageBox.Show("Unable to release the Object " + ex.ToString());
}
finally
{
GC.Collect();
}
}
Have a look:
private void processExcel(string filename)
{
filename = Server.MapPath("~/Files/WM-0b23-productsBook.xlsx");
Microsoft.Office.Interop.Excel.Application xlApp;
Microsoft.Office.Interop.Excel.Workbook xlWorkBook;
Microsoft.Office.Interop.Excel.Worksheet xlWorkSheet;
var missing = System.Reflection.Missing.Value;
xlApp = new Microsoft.Office.Interop.Excel.Application();
xlWorkBook = xlApp.Workbooks.Open(filename, false, true, missing, missing, missing, true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, '\t', false, false, 0, false, true, 0);
xlWorkSheet = (Microsoft.Office.Interop.Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
Microsoft.Office.Interop.Excel.Range xlRange = xlWorkSheet.UsedRange;
Array myValues = (Array)xlRange.Cells.Value2;
int vertical = myValues.GetLength(0);
int horizontal = myValues.GetLength(1);
System.Data.DataTable dt = new System.Data.DataTable();
// must start with index = 1
// get header information
for (int i = 1; i <= horizontal; i++)
{
dt.Columns.Add(new DataColumn(myValues.GetValue(1, i).ToString()));
}
// Get the row information
for (int a = 2; a <= vertical; a++)
{
object[] poop = new object[horizontal];
for (int b = 1; b <= horizontal; b++)
{
poop[b - 1] = myValues.GetValue(a, b);
}
DataRow row = dt.NewRow();
row.ItemArray = poop;
dt.Rows.Add(row);
}
// assign table to default data grid view
GridView1.DataSource = dt;
GridView1.DataBind();
xlWorkBook.Close(true, missing, missing);
xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch (Exception ex)
{
obj = null;
MessageBox.Show("Unable to release the Object " + ex.ToString());
}
finally
{
GC.Collect();
}
}
It is better not using MS Office interop in server cases which will bring a lot of performance and memory issues in the future. Recommend using some 3rd party library, for example: https://www.nuget.org/packages/Spread.Services/ to get what you wanted.
I want to export data from Dataset or Data Table to Excel file in C# without using Gridview.
I would recommend EPPlus - this solution doesn't require COM nor interop dlls and is very fast. Perfectly suited for web scenarios.
http://epplus.codeplex.com/
http://nuget.org/packages/EPPlus
private void DumpExcel(DataTable tbl)
{
using (ExcelPackage pck = new ExcelPackage())
{
//Create the worksheet
ExcelWorksheet ws = pck.Workbook.Worksheets.Add("Demo");
//Load the datatable into the sheet, starting from cell A1. Print the column names on row 1
ws.Cells["A1"].LoadFromDataTable(tbl, true);
//Format the header for column 1-3
using (ExcelRange rng = ws.Cells["A1:C1"])
{
rng.Style.Font.Bold = true;
rng.Style.Fill.PatternType = ExcelFillStyle.Solid; //Set Pattern for the background to Solid
rng.Style.Fill.BackgroundColor.SetColor(Color.FromArgb(79, 129, 189)); //Set color to dark blue
rng.Style.Font.Color.SetColor(Color.White);
}
//Example how to Format Column 1 as numeric
using (ExcelRange col = ws.Cells[2, 1, 2 + tbl.Rows.Count, 1])
{
col.Style.Numberformat.Format = "#,##0.00";
col.Style.HorizontalAlignment = ExcelHorizontalAlignment.Right;
}
//Write it back to the client
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.AddHeader("content-disposition", "attachment; filename=ExcelDemo.xlsx");
Response.BinaryWrite(pck.GetAsByteArray());
}
}
}
}
Get more ways : 9 Solutions to Export Data to Excel for ASP.NET
I have this code but for this you need to include Excel Com Component
Add reference of Microsoft.Office.Interop.Excel.dll in your project will do task for you.
using Excel = Microsoft.Office.Interop.Excel;
public static bool ExportDataTableToExcel(DataTable dt, string filepath)
{
Excel.Application oXL;
Excel.Workbook oWB;
Excel.Worksheet oSheet;
Excel.Range oRange;
try
{
// Start Excel and get Application object.
oXL = new Excel.Application();
// Set some properties
oXL.Visible = true;
oXL.DisplayAlerts = false;
// Get a new workbook.
oWB = oXL.Workbooks.Add(Missing.Value);
// Get the Active sheet
oSheet = (Excel.Worksheet)oWB.ActiveSheet;
oSheet.Name = "Data";
int rowCount = 1;
foreach (DataRow dr in dt.Rows)
{
rowCount += 1;
for (int i = 1; i < dt.Columns.Count + 1; i++)
{
// Add the header the first time through
if (rowCount == 2)
{
oSheet.Cells[1, i] = dt.Columns[i - 1].ColumnName;
}
oSheet.Cells[rowCount, i] = dr[i - 1].ToString();
}
}
// Resize the columns
oRange = oSheet.get_Range(oSheet.Cells[1, 1],
oSheet.Cells[rowCount, dt.Columns.Count]);
oRange.EntireColumn.AutoFit();
// Save the sheet and close
oSheet = null;
oRange = null;
oWB.SaveAs(filepath, Excel.XlFileFormat.xlWorkbookNormal,
Missing.Value, Missing.Value, Missing.Value, Missing.Value,
Excel.XlSaveAsAccessMode.xlExclusive,
Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value);
oWB.Close(Missing.Value, Missing.Value, Missing.Value);
oWB = null;
oXL.Quit();
}
catch
{
throw;
}
finally
{
// Clean up
// NOTE: When in release mode, this does the trick
GC.WaitForPendingFinalizers();
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
}
return true;
}
you can use
using Microsoft.Office.Interop.Excel;
to work with excel documents "native"...
Using C# to Create an Excel Document
http://www.codeproject.com/Articles/20228/Using-C-to-Create-an-Excel-Document
But most of the common report Generator/Designers can easily export to excel
also check for Reporting Services if you are using SQL SERVER
Just in case somebody else used the chosen solution and run into the "object does not contain a definition for get_Range" exception. I found the solution here: Worksheet get_Range throws exception. I hope this will save your time.
In my Windows based application(C#)
i want to import excel sheet to show its data in DatatGridView
i dont want to use oledb
any Help
using Excel = Microsoft.Office.Interop.Excel;
You'll obviously need to add the reference to your project, and then it's plain simple :)
private void ProcessExcel(string filepath)
{
Excel.ApplicationClass ExcelObj = new Excel.ApplicationClass();
Excel.Workbook theWorkbook = ExcelObj.Workbooks.Open(filepath, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
Excel.Sheets sheets = theWorkbook.Worksheets;
Excel.Worksheet worksheet = (Excel.Worksheet)sheets.get_Item(1);
Excel.Range range = worksheet.UsedRange;
System.Array myvalues = (System.Array)range.Cells.Value2;
int vertical = myvalues.GetLength(0);
int horizontal = myvalues.GetLength(1);
string[] headers = new string[horizontal];
string[] data = new string[horizontal];
DataTable ResultsHeader = New DataTable();
DataSet ds = New DataSet();
for (int x = 1; x <= vertical; x++)
{
Utils.inicializarArrays(datos);
for (int y = 1; y <= horizontal; y++)
{
if (x == 1)
{
headers[y - 1] = myvalues.GetValue(x, y).ToString();
}
else
{
string auxdata = "";
if (myvalues.GetValue(x, y) != null)
auxdata = myvalues.GetValue(x, y).ToString();
data[y - 1] = auxdata;
}
}
if(x == 1) //headers
{
for(int w = 0; w < horizontal; w++)
{
ResultsHeader.Columns.Add(New DataColumn(headers[w], GetType(string)));
}
ds.Tables.Add(ResultsHeader);
}
else
{
DataRow dataRow = ds.Tables[0].NewRow();
for(int w = 0; w < horizontal; w++)
{
dataRow(headers[w]) = data[w]
}
ds.Tables[0].Rows.Add(dataRow);
}
}
DataView myDataView = new DataView();
myDataView.Table = ds.Tables[0];
MydataGrid.CurrentPageIndex = 0;
MydataGrid.DataSource = myDataView;
MydataGrid.DataBind();
}
I'm late to the party, but I have something worthwhile to add! I tried Juan's code and it didn't compile out-of-the-box. I modified it a little bit after researching the internet for a few more hours and got it to do exactly what the original poster asked (as I needed to do the same thing). I had to piece code together from other sources, and unfortunately, I did not keep track of what bits and pieces I tried and changed so I can't comment much about it.
The following code works in Visual Studio 2008 with .NET 3.5. Also, the formatting is lost when the data is put into the array (for example, dates become doubles which require a conversion with DateTime.FromOADate() to change it back). The issue with that is you can't tell if a value is an actual double or a date from a coding viewpoint, but if you know ahead of time a column is going to be a date, then format it as you insert the data into the table.
private void processExcel(string filename)
{
Excel.Application xlApp;
Excel.Workbook xlWorkBook;
Excel.Worksheet xlWorkSheet;
var missing = System.Reflection.Missing.Value;
xlApp = new Excel.ApplicationClass();
xlWorkBook = xlApp.Workbooks.Open(filename, false, true, missing, missing, missing, true, Excel.XlPlatform.xlWindows, '\t', false, false, 0, false, true, 0);
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
Excel.Range xlRange = xlWorkSheet.UsedRange;
Array myValues = (Array)xlRange.Cells.Value2;
int vertical = myValues.GetLength(0);
int horizontal = myValues.GetLength(1);
DataTable dt = new DataTable();
// must start with index = 1
// get header information
for (int i = 1; i <= horizontal; i++)
{
dt.Columns.Add(new DataColumn(myValues.GetValue(1,i).ToString()));
}
// Get the row information
for (int a = 2; a <= vertical; a++)
{
object[] poop = new object[horizontal];
for (int b = 1; b <= horizontal; b++)
{
poop[b - 1] = myValues.GetValue(a, b);
}
DataRow row = dt.NewRow();
row.ItemArray = poop;
dt.Rows.Add(row);
}
// assign table to default data grid view
dataGridView1.DataSource = dt;
xlWorkBook.Close(true, missing, missing);
xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch (Exception ex)
{
obj = null;
MessageBox.Show("Unable to release the Object " + ex.ToString());
}
finally
{
GC.Collect();
}
}
Those codes above does not work.
That code works for me (.NET Framework 4.7.1)
private void processExcel(string filename)
{
Excel.Application xlApp;
Excel.Workbook xlWorkBook;
Excel.Worksheet xlWorkSheet;
var missing = System.Reflection.Missing.Value;
xlApp = new Excel.Application();
xlWorkBook = xlApp.Workbooks.Open(filename, false, true, missing, missing, missing, true, Excel.XlPlatform.xlWindows, '\t', false, false, 0, false, true, 0);
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
Excel.Range xlRange = xlWorkSheet.UsedRange;
Array myValues = (Array)xlRange.Cells.Value2;
int vertical = myValues.GetLength(0);
int horizontal = myValues.GetLength(1);
DataTable dt = new DataTable();
// must start with index = 1
// get header information
try
{
for (int i = 1; i <= horizontal; i++)
{
dt.Columns.Add(new DataColumn(Convert.ToString(myValues.GetValue(1, i))));
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
// Get the row information
for (int a = 2; a <= vertical; a++)
{
object[] rows = new object[horizontal];
for (int b = 1; b <= horizontal; b++)
{
rows[b - 1] = myValues.GetValue(a, b);
}
DataRow row = dt.NewRow();
row.ItemArray = rows;
dt.Rows.Add(row);
}
// assign table to default data grid view
dataGridView1.DataSource = dt;
xlWorkBook.Close(true, missing, missing);
xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch (Exception ex)
{
obj = null;
MessageBox.Show("Unable to release the Object " + ex.ToString());
}
finally
{
GC.Collect();
}
}