DataGridView点击排序完成后如何禁止自动排序

Summary: Disable sorting after clicking DataGridView columnheader，Prevent databound DataGridView from sorting while editing！

Problem：I have a databound DataGridView in a WinForms which the user may have sorted by a column. The problem is this: after the user leaves a row after editing a cell in the sorted column, the row is immediately re-sorted.This is very disorienting for users and makes editing groups of rows together impossible.

Solution: re-databound when user start editing, run program, or sorted finish, to do that can disable automatic re-sorting.ting after an initial sort and then only sort again when the user requests it.

/// <summary>

/// 控件状态 When the Program start or stop, we can re-databound dgv to disable re-sorting 

/// </summary>

public void ChangeStatus(bool status)

{

    Invoke((ThreadStart)delegate()

    {                

        mydgv.Columns["status"].SortMode = status ? DataGridViewColumnSortMode.Automatic : DataGridViewColumnSortMode.NotSortable;//排序功能状态更改

        if (status)

        {

            mydgv.Sort(mydgv.Columns["status"], ListSortDirection.Ascending); //停止运行任务,自动排序

        }

        else

        {

            DataGridViewRebindsource(mydgv); //开始运行任务，排序完后重新绑定数据

        }

    });

}



/// <summary>

/// 列头单击排序事件——after ColumnHeaderMouseClick to re-databound dgv to disable re-sorting

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void mydgv_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)

{

    switch (mydgv.SortOrder)

    {

        case System.Windows.Forms.SortOrder.None:

            mydgv.Sort(mydgv.Columns[e.ColumnIndex], ListSortDirection.Ascending);

            break;

        case System.Windows.Forms.SortOrder.Ascending:

            mydgv.Sort(mydgv.Columns[e.ColumnIndex], ListSortDirection.Descending);

            break;

        case System.Windows.Forms.SortOrder.Descending:

            mydgv.Sort(mydgv.Columns[e.ColumnIndex], ListSortDirection.Ascending);

            break;

    }



    DataGridViewRebindsource(mydgv); //排序完后重新绑定数据

}



/// <summary>

/// 重新绑定dgv数据 清除自动排序 —— function: re-databound dgv to disable re-sorting 

/// </summary>

/// <param name="dgv"></param>

public void DataGridViewRebindsource(DataGridView dgv)

{

    DataTable table = new DataTable();

    int dgvColumnsNum = dgv.Columns.Count;

    int dgvRowsNum = dgv.Rows.Count;

    //获取datagridview的列

    foreach (DataGridViewColumn dgvc in dgv.Columns)

    {

        if (dgvc.Visible && dgvc.CellType != typeof(DataGridViewCheckBoxCell))

        {

            DataColumn dc = new DataColumn();

            dc.ColumnName = dgvc.DataPropertyName;

            table.Columns.Add(dc);

        }

    }

    //获取datagridview的行

    for (int i = 0; i < dgvRowsNum; i++)

    {

        DataRow dataRow = table.NewRow();

        int j = 0;

        for (j = 0; j < dgvColumnsNum; j++)

        {

            dataRow[j] = dgv.Rows[i].Cells[j].Value;

        }

        table.Rows.Add(dataRow);

    }

    dgv.DataSource = table;

}