怎么配置出现“office version=15.0.0”报错

Question

I'm trying to create a datagridview from sql data, make the user changes and after that with one click user will have the dataridviews data as an excel but no matter what ı tried ı keep getting that error:

"System.IO.FileNotFoundException: 'Could not load file or assembly 'office, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c'. Sistem belirtilen dosyayı bulamıyor.'"

btw ım using office 2016 pro and visual studio 2022 my codeblock is here:

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


namespace DönüştürülecekApp
{
    public partial class Pro : Form
    {
        public Pro()
        {
            InitializeComponent();
        }

        public void Pro_Load(object sender, EventArgs e)
        {
            dataGridView1.AllowUserToAddRows = true;
            dataGridView1.AutoGenerateColumns = false;
            dataGridView1.EnableHeadersVisualStyles = false;

            var select = "Select ........";
            var c = new SqlConnection("Server= ..........."); 
            var dataAdapter = new SqlDataAdapter(select, c);

            var commandBuilder = new SqlCommandBuilder(dataAdapter);
            var ds = new DataSet();
            dataAdapter.Fill(ds);
            malzemeBindingSource.DataSource = ds.Tables[0];
        }


        private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
        {
            
        }

        private void button1_Click(object sender, EventArgs e)
        {
            ExportToExcel();
        }
        private void ExportToExcel()
        {
            string connectionString = "Server= ......";
            string query = "Select ......";

            SqlConnection connection = new SqlConnection(connectionString);
            SqlCommand command = new SqlCommand(query, connection);
            SqlDataAdapter adapter = new SqlDataAdapter(command);
            System.Data.DataTable dataTable = new System.Data.DataTable();
            adapter.Fill(dataTable);

            Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
            Workbook workbook = excel.Workbooks.Add(Type.Missing);
            Worksheet sheet = (Worksheet)workbook.ActiveSheet;

            for (int i = 0; i < dataTable.Columns.Count; i++)
            {
                sheet.Cells[1, i + 1] = dataTable.Columns[i].ColumnName;
            }

            for (int i = 0; i < dataTable.Rows.Count; i++)
            {
                for (int j = 0; j < dataTable.Columns.Count; j++)
                {
                    sheet.Cells[i + 2, j + 1] = dataTable.Rows[i][j].ToString();
                }
            }

            workbook.SaveAs("YourFileName.xlsx", Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
            excel.Quit();
        }
    }
}

I already checked dlls and it's in that folder

:C:\Users.....nuget\packages\microsoft.office.interop.excel\15.0.4795.1001\lib.net20\Microsoft.Office.Interop.Excel.dll

ı tried to google it and none of the solutions helped me

Answer 1

My test environment is VS 2022 17.4.4 Winforms(.Net Framework 4.8)

Add the corresponding dll in Manage Nuget.

Because I am also using office2016, here I added MSOffice.Interop 16.0.55555.

With the right dll, you're done outputting.