Question

I am trying to copy data from my datagridview to a datatable so i can export to a csv file

here is the code

public DataTable createdatatablefromdgv()
   {
       DataTable dsptable = new DataTable();

       for (int i = 0; i < dataGridView1.Columns.Count; i++)
       {
           DataColumn dspcolumn = new DataColumn(dataGridView1.Columns[i].HeaderText);
           dsptable.Columns.Add(dspcolumn);
       }
       int noOfColumns = dataGridView1.Columns.Count;
       foreach (DataGridViewRow dgvr in dataGridView1.Rows)
       {
           DataRow dataRow = dsptable.NewRow();

           for (int i = 0; i < noOfColumns; i++)
           {
               dataRow[i] = dgvr.Cells[i].Value.ToString();
           }

       }
       return dsptable;
   }

It seems like it copies the data from the the grid to to the table but when I return the datatable all there is the columns no rows

Answer 1

You are not adding dataRow to data table after assigning values to its columns.

public DataTable createdatatablefromdgv()
{
   DataTable dsptable = new DataTable();

   for (int i = 0; i < dataGridView1.Columns.Count; i++)
   {
       DataColumn dspcolumn = new DataColumn(dataGridView1.Columns[i].HeaderText);
       dsptable.Columns.Add(dspcolumn);
   }
   int noOfColumns = dataGridView1.Columns.Count;
   foreach (DataGridViewRow dgvr in dataGridView1.Rows)
   {
       DataRow dataRow = dsptable.NewRow();

       for (int i = 0; i < noOfColumns; i++)
       {
           dataRow[i] = dgvr.Cells[i].Value.ToString();
       }
       dsptable.Rows.Add(dataRow); //Add this statement to add rows to Data Table

   }
   return dsptable;
}