C# 将Datagridview导出到现有Excel文件C

我的软件有问题。我想将Datagridview导出到现有excel文件。我的软件将excel文件导入到datagridview，现在我想对gridview进行更改，然后将其安全恢复。我已经尝试了很多选项，但我想将其添加到现有文件中，大多数教程都是关于如何将其导出到新文件中。有人能帮我解决这个问题吗？我还想到了将gridview导出到新的gridview，然后将新的gridview的工作表复制到现有的gridview中。但同样的问题，我什么也找不到。我对整个程序设计都很陌生，在我的公司里只是个学习者。如果有人能帮助我，那就太好了！如果我的英语不好，我住在德国。谢谢：

这将保存到特定位置的特定Excel文件中

using System;
using System.Data;
using System.Windows.Forms;
using System.Data.SqlClient;
using Excel = Microsoft.Office.Interop.Excel;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string connectionString = "Data Source=.;Initial Catalog=pubs;Integrated Security=True";
            string sql = "SELECT * FROM Authors";
            SqlConnection connection = new SqlConnection(connectionString);
            SqlDataAdapter dataadapter = new SqlDataAdapter(sql, connection);
            DataSet ds = new DataSet();
            connection.Open();
            dataadapter.Fill(ds, "Authors_table");
            connection.Close();
            dataGridView1.DataSource = ds;
            dataGridView1.DataMember = "Authors_table";
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Excel.Application xlApp;
            Excel.Workbook xlWorkBook;
            Excel.Worksheet xlWorkSheet;
            object misValue = System.Reflection.Missing.Value;

            Int16 i, j;

            xlApp = new Excel.ApplicationClass();
            xlWorkBook = xlApp.Workbooks.Add(misValue);

            xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);

            for (i = 0; i <= dataGridView1.RowCount - 2; i++)
            {
                for (j = 0; j <= dataGridView1.ColumnCount - 1; j++)
                {
                    xlWorkSheet.Cells[i + 1, j + 1] = dataGridView1[j, i].Value.ToString();
                }
            }

            xlWorkBook.SaveAs(@"c:\csharp.net-informations.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);
        }

        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();
            }
        }
    }
}

---

请记住添加引用右键单击项目并选择“引用”，然后查找Microsoft Excel 15.0对象库

private void btnExport_Click(object sender, EventArgs e)
{ 
    Microsoft.Office.Interop.Excel.Application xlworksheet = 
        new Microsoft.Office.Interop.Excel.Application();
           
    xlworksheet.Application.Workbooks.Open(
        @"C:\Users\BLANKSOASHEET.xlsx", 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);
           
    try
    {
       for(int i=1; i<DgvSOA.Columns.Count+1; i++)
       {
           worksheet.Cells[1,i] = datagridView1.Columns[i - 1].HeaderText;
       }       

       for (int i = 0; i < datagridView1.Rows.Count; i++)
       {
           for (int j = 0; j < datagridView1.Columns.Count; j++)
           {
                xlworksheet.Cells[i + 13, j + 1] = datagridView1.Rows[i].Cells[j].Value.ToString();
            }
        }
    }
}

---

如果您有读取excel文件并将数据导入DataGridView的代码，那么反向操作应该不难理解。您没有说明DataGridView是如何填充的，DataGridView数据绑定了吗？如何向DataGridView添加新项？是否要向现有工作簿中添加新工作表，或向已包含数据的现有工作表中添加数据？您是如何引用Excel、Interop、EPPlus或其他第三方库的？因此，这并不是您真正想要获得此类帮助的地方。尝试一些东西，如果它不能像预期的那样工作，请将您的代码发布在这里，其他人可以提供帮助。您可能希望查看以下有关提问的信息。