如何对DataGridView列进行排序？

Question

I've created a DataTable as follows:

        accTable = new DataTable();
        accTable.Columns.Add(new DataColumn("Date"));
        accTable.Columns.Add(new DataColumn("Amt"));
        accTable.Columns.Add(new DataColumn("Item"));

and filling it by:

            foreach (DataRow myDataRow in myDataSet.Tables[0].Rows)
            {
                DataRow accRow = accTable.NewRow();
                //code skipped

                accRow["Date"] = date.ToString("d"); //tried without converting to string also
                accRow["Amt"] = int.Parse(cells[1].ToString());
                accRow["Item"] = cells[2].ToString();

                accTable.Rows.Add(accRow);
            }

Then I'm binding a DataGridView to the DataTable accTable as follows:

            dataGridView1.DataSource = accTable;

How can I make the Date column sortable. By default, it is sorting alphabetically. Where can I set the type of the column to DateTime.

Answer 1

The column has a DataType . Have you tried setting that to DateTime ?

var accTable = new DataTable();

var columnSpec = new DataColumn("Date");
columnSpec.DataType = typeof(DateTime);
accTable.Columns.Add(columnSpec);

Of course you can do this on one line ( thanks to BFree ):

accTable.Columns.Add("Date",typeof(DateTime));

You bind this DataTable to a DataGridView and then for each column on the view set the SortMode property:

column.SortMode = DataGridViewColumnSortMode.Automatic;

I did have some code that did all this, but I converted it to use nullable types (including the DateTime fields) and it's not working as I expected any more. If I can get it working properly again I'll update this answer.

Answer 2

对于日期数据，我们可以使用以下代码：

dgv_transfer_from.Sort(dgv_transfer_from.Columns["Date_Out"], ListSortDirection.Ascending);