Скрыть столбец datagridview при экспорте в excel

Question

Если представление datagridview имеет 3 столбца, как я могу, например, не экспортировать третий столбец.

Как я могу достичь этого.

Экспортный Код

private void btnexcel_Click(object sender, EventArgs e) 
{ 
    Microsoft.Office.Interop.Excel.Application objexcelapp = new Microsoft.Office.Interop.Excel.Application(); 
    objexcelapp.Application.Workbooks.Add(Type.Missing); 
    objexcelapp.Columns.ColumnWidth = 25; 

    for (int i = 1; i < dgven.Columns.Count + 1; i++) 
    { 
     objexcelapp.Cells[1, i] = dgven.Columns[i - 1].HeaderText; 
    } 
    /*For storing Each row and column value to excel sheet*/ 
    for (int i = 0; i < dgven.Rows.Count; i++) 
    { 
     for (int j = 0; j < dgven.Columns.Count; j++) 
     { 
      if (dgven.Rows[i].Cells[j].Value != null) 
      { 
       objexcelapp.Cells[i + 2, j + 1] = dgven.Rows[i].Cells[j].Value.ToString(); 
      } 
     } 
    } 
    string excelFilename = "Vendors"; 
    MessageBox.Show("Your excel file exported successfully at D:\\" + excelFilename + ".xlsx"); 
    objexcelapp.ActiveWorkbook.SaveCopyAs("D:\\" + excelFilename + ".xlsx"); 
    objexcelapp.ActiveWorkbook.Saved = true; 
} 

Answer 1

private void btnexcel_Click(object sender, EventArgs e) 
{ 
    Dictionary<int,bool> dicSkip = new Dictionary<int,bool>(); 
    dicSkip[dgvColThree.Index] = true; 
    dicSkip[dgvColFour.Index] = true; 

    Microsoft.Office.Interop.Excel.Application objexcelapp = new Microsoft.Office.Interop.Excel.Application(); 
    objexcelapp.Application.Workbooks.Add(Type.Missing); 
    objexcelapp.Columns.ColumnWidth = 25; 

    int colcount = 0; 

    for (int i = 1; i < dgven.Columns.Count + 1; i++) 
    { 
     if (dicSkip.ContainsKey(i-1)) 
      continue; 

     colcount++; 
     objexcelapp.Cells[1, colcount] = dgven.Columns[colcount - 1].HeaderText; 
    } 

    /*For storing Each row and column value to excel sheet*/ 

    for (int i = 0; i < dgven.Rows.Count; i++) 
    { 
     colcount=0; 

     for (int j = 0; j < dgven.Columns.Count; j++) 
     { 
      if (dicSkip.ContainsKey(j)) 
       continue; 

      colcount++; 

      if (dgven.Rows[i].Cells[j].Value != null) 
      { 
       objexcelapp.Cells[i + 2, colcount + 1] = dgven.Rows[i].Cells[j].Value.ToString(); 
      } 
     } 
    } 
    string excelFilename = "Vendors"; 
    MessageBox.Show("Your excel file exported successfully at D:\\" + excelFilename + ".xlsx"); 
    objexcelapp.ActiveWorkbook.SaveCopyAs("D:\\" + excelFilename + ".xlsx"); 
    objexcelapp.ActiveWorkbook.Saved = true; 
}