导出到 Excel 时出现错误
Posted
技术标签:
【中文标题】导出到 Excel 时出现错误【英文标题】：I am getting an error while exporting to Excel 【发布时间】：2021-02-25 15:54:36 【问题描述】：我想将数据从 dataGridView 传输到 Excel。为此，我在我的项目中添加了“Microsoft.Office.Interop.Excel”插件。我正确地编写了必要的代码。但是当我运行项目并单击“导出到 Excel”按钮时，出现错误。我该怎么办？
这是我的代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace DuyuTekStokApp
public partial class StockAll : Form
SqlConnection connect = new SqlConnection("Data Source=DESKTOP-L01MAVE;Initial Catalog='StockControl';Integrated Security=True");
public StockAll()
InitializeComponent();
public void VerileriGoster(string Veriler)
SqlDataAdapter da = new SqlDataAdapter(Veriler, connect);
DataSet ds = new DataSet();
da.Fill(ds);
dataGridViewAll.DataSource = ds.Tables[0];
public void changeHeader()
dataGridViewAll.Columns[0].HeaderText = "Stok Kodu";
dataGridViewAll.Columns[1].HeaderText = "Stok Cinsi";
dataGridViewAll.Columns[2].HeaderText = "Barkod Numarası";
dataGridViewAll.Columns[3].HeaderText = "Birimi";
dataGridViewAll.Columns[4].HeaderText = "Grubu";
dataGridViewAll.Columns[5].HeaderText = "Tarih";
dataGridViewAll.Columns[6].HeaderText = "Açıklama";
dataGridViewAll.Columns[7].HeaderText = "Sınıfı";
dataGridViewAll.Columns[8].HeaderText = "Değişim Tarihi";
dataGridViewAll.Columns[9].HeaderText = "Adeti";
dataGridViewAll.Columns[10].HeaderText = "Kritik Miktar";
dataGridViewAll.Columns[11].HeaderText = "Resim";
private void StockAll_Load(object sender, EventArgs e)
connect.Open();
SqlCommand cmd1 = new SqlCommand("SELECT COUNT(*) FROM StockCard", connect);
SqlDataReader dr1 = cmd1.ExecuteReader();
while (dr1.Read())
labelToplam.Text = dr1[0].ToString();
connect.Close();
connect.Open();
SqlCommand cmd2 = new SqlCommand("SELECT SUM(StokAdet) FROM StockCard", connect);
SqlDataReader dr2 = cmd2.ExecuteReader();
while (dr2.Read())
labelGenel.Text = dr2[0].ToString();
connect.Close();
VerileriGoster("SELECT StokKodu, StokCinsi, StokBarkod, StokBirim, StokGrup, StokTarih, StokAciklama, StokSinif, StokSonTarih, StokAdet, StokKritik, StokResim FROM StockCard ORDER BY StokKodu ASC");
//VerileriGoster(@"SELECT dbo.StockCard.StokKodu, dbo.StockCard.StokBarkod, dbo.StockCard.StokBirim, dbo.StockCard.StokGrup, dbo.StockCard.StokTarih, dbo.StockCard.StokResim, dbo.StockMove.MoveAdet, dbo.StockMove.MoveMevcut, dbo.StockMove.MoveSinif, dbo.StockMove.MoveTarih
// FROM dbo.StockMove INNER JOIN
// dbo.StockCard ON dbo.StockMove.StokID = dbo.StockCard.StokID ORDER BY StokKodu ASC ");
changeHeader();
private void dataGridViewAll_CellClick(object sender, DataGridViewCellEventArgs e)
int secilen = dataGridViewAll.SelectedCells[0].RowIndex;
labelUrun.Text = dataGridViewAll.Rows[secilen].Cells[9].Value?.ToString();
labelKrit.Text = dataGridViewAll.Rows[secilen].Cells[10].Value.ToString();
byte[] bytes = (byte[])dataGridViewAll.Rows[secilen].Cells[11].Value;
MemoryStream ms = new MemoryStream(bytes);
pictureBoxResim.Image = Image.FromStream(ms);
private void btnExcel_Click(object sender, EventArgs e)
Microsoft.Office.Interop.Excel._Application app = new Microsoft.Office.Interop.Excel.Application();
Microsoft.Office.Interop.Excel._Workbook workbook = app.Workbooks.Add(Type.Missing);
Microsoft.Office.Interop.Excel._Worksheet worksheet = null;
worksheet = workbook.Sheets["Sheet1"];
worksheet = workbook.ActiveSheet;
worksheet.Name = "Stok Bilgisi";
for (int i = 1; i < dataGridViewAll.Columns.Count + 1; i++)
worksheet.Cells[i, 1] = dataGridViewAll.Columns[i - 1].HeaderText;
for (int i = 0; i < dataGridViewAll.Rows.Count; i++)
for (int j = 0; j < dataGridViewAll.Columns.Count; i++)
worksheet.Cells[i + 2, j + 1] = dataGridViewAll.Rows[i].Cells[j].Value.ToString();
var saveFileDialog = new SaveFileDialog();
saveFileDialog.FileName = "StokBilgisi";
saveFileDialog.DefaultExt = ".xlsx";
if (saveFileDialog.ShowDialog() == DialogResult.OK)
workbook.SaveAs(saveFileDialog.FileName, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
app.Quit();
这是我收到的错误消息：
System.InvalidCastException
HResult = 0x80004002
Message = COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' could not be assigned to interface type 'Microsoft.Office.Interop.Excel._Application'. This operation failed because the QueryInterface call on the COM component for the interface with the IID '000208D5-0000-0000-C000-000000000046' failed with the following error: Error loading type library / DLL. (HRESULT returned exception: 0x80029C4A (TYPE_E_CANTLOADLIBRARY)).
Source = mscorlib
StackTrace:
at System.StubHelpers.StubHelpers.GetCOMIPFromRCW (Object objSrc, IntPtr pCPCMD, IntPtr & ppTarget, Boolean & pfNeedsRelease)
at Microsoft.Office.Interop.Excel.ApplicationClass.get_Workbooks ()
at SenseTekStokApp.StockAll.btnExcel_Click (Object sender, EventArgs e) in D: \ yNs \ VisualTutorials \ SenseTekStokApp \ SenseTekStokApp \ StockAll.cs: line 84
at System.Windows.Forms.Control.OnClick (EventArgs e)
at System.Windows.Forms.Button.OnClick (EventArgs e)
at System.Windows.Forms.Button.OnMouseUp (MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp (Message & m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc (Message & m)
at System.Windows.Forms.ButtonBase.WndProc (Message & m)
at System.Windows.Forms.Button.WndProc (Message & m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage (Message & m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc (Message & m)
at System.Windows.Forms.NativeWindow.DebuggableCallback (IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW (MSG & msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop (IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner (Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop (Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run (Form mainForm)
at SenseTekStokApp.Program.Main () in D: \ yNs \ VisualTutorials \ SenseTekStokApp \ SenseTekStokApp \ Program.cs: line 19
【问题讨论】：
这能回答你的问题吗？ Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' to interface type 'Microsoft.Office.Interop.Excel._Application' 有很多库可以为你编写 XLSX 文件。不推荐使用 Interop。 不，不要使用互操作。您已经将数据下载到数据表中，因此很容易通过数据绑定在网格中显示，并且很容易（几行代码）使用 EPPlus 之类的东西写入 excel 文件。 例如***.com/questions/13669733/… 明白。我会尝试 EPPlus。如果它以我想要的方式发生，我会在这里说出来。 【参考方案1】：您可以尝试以下步骤将datagirdview转换为excel。
首先，请安装nuget-packageMicrosoft.Office.Interop.Excel。
其次，请在代码中使用。
using Excel=Microsoft.Office.Interop.Excel;
第三，我建议你可以先把datagirdview转成datatable，然后再把datatable转成excel。
private void button1_Click(object sender, EventArgs e)
DataTable table = (DataTable)dataGridView1.DataSource;
ExportToExcel(table);
public void ExportToExcel(DataTable tbl )
try
if (tbl == null || tbl.Columns.Count == 0)
throw new Exception("ExportToExcel: Null or empty input table!\n");
// load excel, and create a new workbook
var excelApp = new Excel.Application();
var workbook=excelApp.Workbooks.Add();
// single worksheet
Excel._Worksheet workSheet = excelApp.ActiveSheet;
// column headings
for (var i = 0; i < tbl.Columns.Count; i++)
workSheet.Cells[1, i + 1] = tbl.Columns[i].ColumnName;
// rows
for (var i = 0; i < tbl.Rows.Count; i++)
// to do: format datetime values before printing
for (var j = 0; j < tbl.Columns.Count; j++)
workSheet.Cells[i + 2, j + 1] = tbl.Rows[i][j];
try
var saveFileDialog = new SaveFileDialog();
saveFileDialog.FileName = "StokBilgisi";
saveFileDialog.DefaultExt = ".xlsx";
if (saveFileDialog.ShowDialog() == DialogResult.OK)
workbook.SaveAs(saveFileDialog.FileName, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
excelApp.Quit();
Console.WriteLine("Excel file saved!");
catch (Exception ex)
throw new Exception("ExportToExcel: Excel file could not be saved! Check filepath.\n"
+ ex.Message);
catch (Exception ex)
throw new Exception("ExportToExcel: \n" + ex.Message);
【讨论】：
这场婚礼不知何故成功了。但是当我点击按钮时，我得到了一个错误。 “System.Exception HResult = 0x80131500 Message = ExportToExcel: HRESULT 返回异常：0x800A03EC”给出了这个错误。会不会是我电脑上安装的“Excel”有问题？ @YunusEmreSöğüt，根据我的研究，您可以检查您的文件是否以 xlsx 结尾。如果不是，请将其更改为 test.xlsx。 @YunusEmreSöğüt，您可以接受它作为答案，以便其他人可以解决类似的问题。【参考方案2】：本质上，使用 EPPlus（每 cmets）将您的网格保存到 excel 文件：
private void btnExcel_Click(object sender, EventArgs e)
var saveFileDialog = new SaveFileDialog();
saveFileDialog.FileName = "StokBilgisi";
saveFileDialog.DefaultExt = ".xlsx";
if (saveFileDialog.ShowDialog() == DialogResult.OK)
using (ExcelPackage pck = new ExcelPackage(new FileInfo(saveFileDialog.FileName)))
ExcelWorksheet ws = pck.Workbook.Worksheets.Add("StokBilgisi");
ws.Cells["A1"].LoadFromDataTable(dataGridViewAll.DataSource as DataTable, true);
pck.Save();
这是the code from the linked question/answer，通过插入dataGridViewAll.DataSource as DataTable 来根据您的上下文进行调整，以检索您在VerileriGoster 中调用dataGridViewAll.DataSource = ds.Tables[0]; 时绑定到网格的数据表，以及其他一些问题，例如选择要保存的文件名一个保存文件对话框
【讨论】：
首先，谢谢。我试过这个，但是“（ExcelPackage pck = new ExcelPackage（saveFileDialog.FileName））”这里“（saveFileDialog.Filename）”给出了一个错误。参数 1: cannot convert from 'string' to 'System.IO.FileInfo' 给出错误。 我总是忘记的一件事是 EPPlus 采用 FileInfo，而不是字符串文件路径。只需将其更改为new ExcelPackage (new FileInfo(saveFileDialog.FileName)) 并记住using System.IO
这次成功了。我点击了按钮，文件选择部分出现了。当我说保存时，我得到了另一个错误。我认为这与 EPPlus 许可证有关。 OfficeOpenXml.LicenseException HResult = 0x80131500 消息 = 请设置 ExcelPackage.LicenseContext 属性。见epplussoftware.com/developers/licenseexception ...这样的错误。我尝试了一些东西，但做不到。我该如何解决？
我安装了一个较早的版本，它已被修复。现在一切都按我想要的方式顺利进行。谢谢你为我做的一切。 :)
如果您阅读该文档，它基本上会说“阅读许可证，如果您的使用意味着您必须付费，则付款并设置 Licensed = true，如果您的使用意味着您没有支付，然后设置 Licensed=true".. 你做什么取决于你和你的道德指南针，但实际上，如果你在应该付费（商业）的环境中使用这个软件，它不会是你的口袋无论如何资助它。开发人员做得很棒，所以他们应得的钱（就像任何为钱工作的人一样）所以如果你应该付钱的话。或者您可以使用许可不同的 v4以上是关于导出到 Excel 时出现错误的主要内容，如果未能解决你的问题，请参考以下文章
将 dataGridView 数据导出到 excel 时出现错误
使用 EPPlus 库从 SQL Server 导出到 Excel 时出现“内存不足”异常
将 Excel 工作表导出到 PDF 文件时出现奇怪的 Powershell 行为
php 从Gravity Forms导出文件中删除空行（导入到excel时出现问题）