从单元格中提取数据

Question

The following code works fine , it extracts data from all cells in a sheet

using (OleDbConnection con1 = new OleDbConnection(connectionString))
{
    var dt = new DataTable();
    string query = string.Format("SELECT  * FROM [{0}]", sheetName);
    con1.Open();
    OleDbDataAdapter adapter = new OleDbDataAdapter(query, con1);
    adapter.Fill(dt);
    try
    {
        using (SqlConnection con = new SqlConnection(consString))
        {
            con.Open();
            for (int i = 1; i < dt.Rows.Count; i++)
            {

                for (int j = 1; j < dt.Columns.Count; j ++)
                {
                    MessageBox.Show(dt.Rows[i][j].ToString());
                 }
             }
         }

The code above extract data in the green rectangle but I need to extract data in the red rectangle in the following picture .

How could I extract data in the rectangle not in the green rectangle ?

Answer 1

You can change the displayed digits by changing region and setting in the control panel, this way full values will be displayed which can be fetched by OLEDB connection. EDIT: After reading your commment abount not changing excel cell column format I will suggest trying EPPLUS.