Save data grid view to .csv

void SaveDataGridViewToCSV(string filename, DataGridView grd_Data)
{
// Choose whether to write header. Use EnableWithoutHeaderText instead to omit header.
grd_Data.ClipboardCopyMode = DataGridViewClipboardCopyMode.EnableAlwaysIncludeHeaderText;
// Select all the cells
grd_Data.SelectAll();
// Copy selected cells to DataObject
DataObject dataObject = grd_Data.GetClipboardContent();
// Get the text of the DataObject, and serialize it to a file
File.WriteAllText(filename, dataObject.GetText(TextDataFormat.CommaSeparatedValue));
Application.DoEvents();
}